Birds with smaller, shallower beaks had higher reproductive success (fitness) than birds with wide, deep beaks throughout this time period. This has resulted in a progressive reduction in average beak size.
What are the uses of beak in birds?What is the purpose of the beak We've all heard of birds with bills or beaks, but did you know they also have teeth to eat their food Are they just for eating, or are they beaks or bills (both terminology are interchangeable) The answers to these questions are emphatically no. All wild birds' beaks or bills perform a range of functions, depending on their environment and nutritional requirements.
Birds with smaller, shallower beaks had higher reproductive success (fitness) than birds with wide, deep beaks throughout this time period. This has resulted in a progressive reduction in average beak size.
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Complete question:
Would you say that birds with large/deep beaks had more chicks than did birds with small/shallow beaks?
a cell is represented in the diagram shown below. see image 2. which statement about the cell is true?
The statements about the cell that is correct, that is, structure B contains DNA involved in transmitting genetic information
A DNA molecule is made up of two lengthy polynucleotide chains with four different kinds of nucleotide subunits. A DNA chain, or DNA strand, is the term used to describe each of these chains. The two chains are joined by hydrogen bonds between the bases of the nucleotides. A base containing nitrogen and one or more phosphate groups are linked to a five-carbon sugar to form a nucleotide. The sugar in DNA nucleotides is deoxyribose, which is joined to a single phosphate group. The two polynucleotide chains that make up DNA's double helix have chemical and structural characteristics that give it its three-dimensional structure.
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The complete question is:
A cell is represented in the diagram shown below. Which one of the following statements about the cell is correct?
Structure B contains DNA involved in transmitting genetic information.cell is not a plasmolysed cellMitochondria is present in the cytoplasm.which of the following investigations is an example of the study of an abiotic factor? view available hint(s)for part a which of the following investigations is an example of the study of an abiotic factor? observing interactions among various organisms in a rainforest canopy the relationship between finch beak size and food availability on two different galapagos islands investigating how the amount of annual precipitation affects the distribution of a tree species investigating how an elk population competes for food identifying food sources for an egret population
Answer:
Investigating the amount of annual precipitation
Explanation:
By process of elimination, C would be the correct answer. Every other answer choice contains biotic factors or living factors.
Biotic factors consist of things like animals, bacteria, and protozoa.
Abiotic factors, on the other hand, consist of things that are non-living, such as the water that is being observed.
Order the events in which telomerase maintains chromosomal ends during replication Not all events will be placedFirst event The RNA component of telomerase binds to complementary sequence on the 3- overhang of DNA_ Nucleotides that are complementary to the RNA component of telomerase are added to the 3' end of the DNA_ Telomerase moves along the newly synthesized DNA it has produced toward the end_ Additional nucleotides are added t0 the end of the DNA DNA Polymerase adds nucleotides to the 3' end of the RNA primer; replicating the single stranded DNA overhang Primase creates an RNA Primer complementary to section of DNA produced by Telomerase. Telomerase moves along the newly synthesized DNA it has produced toward the 5end_Last event Answei Bank DNA Polymerase adds nucleotides to the5 end of the RNA primer; replicating the single stranded DNA overhang-
Telomerase is an enzyme that helps maintain the integrity of a cell's telomeres.
What do you mean by enzyme?
Enzymes basically are proteins that act as catalysts in biochemical reactions. They speed up chemical reactions by lowering the activation energy needed for the reaction to occur. Enzymes are found in all living organisms and are essential for the body’s metabolic processes.
Primase creates an RNA Primer complementary to section of DNA produced by Telomerase.
The RNA component of telomerase binds to complementary sequence on the 3' overhang of DNA,
Telomerase moves along the newly synthesized DNA it has produced toward the 3' end.
Additional nucleotides are added to the end of the DNA.
Telomerase moves along the newly synthesized DNA that it has produced toward the 5' end.
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entomology: participants may be asked to identify how long an animal has been dead based on the type of insects found on the body at the scene.
Since other forensic techniques are equally or more accurate before this point than the bug evidence, the majority of cases involving a forensic entomologist are 72 hours or older.
The most trustworthy method for determining the number of days since death, and possibly the only one, is often bug evidence after three days.The first witnesses to a crime are frequently certain types of insects. If the season is right, such as spring, summer, or fall in Canada, they often arrive within 24 hours after the death and can arrive quickly if there is blood or other bodily fluids present. The Calliphoridae, or blowflies, and the Sarcophagidae are the first two categories of insects (the flesh flies). Other species, like the Piophilidae or cheese skippers, are only drawn to the corpse later, during protein fermentation, and are not interested in the body when it is still alive. Some insects arrive at the scene to feed on other insects instead of being drawn to the body directly.
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Who developed the theory that diseases only have natural causes?
A. Darwin
B. Mendel
C. Socrates
D. Hippocrates
Answer:
D. Hippocrates
Explanation:
Hippocrates' search for the natural cause of the disease was used to establish treatment.
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Hippocrates developed the theory that diseases only have natural causes. The correct option is D.
Thus, The "Father of Medicine," Hippocrates, developed the idea that illnesses only had natural causes. Between between 460 and 370 BCE, he resided in ancient Greece and made important contributions to medicine.
Hippocrates rejected mystical and supernatural explanations for illnesses and suggested that they were brought on by imbalances in the humours (fluids) of the body.
His method, which laid the groundwork for contemporary scientific medicine, placed an emphasis on observation, rational thinking, and natural explanations for ailments.
Thus, Hippocrates developed the theory that diseases only have natural causes. The correct option is D.
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Kohler and Lipton first discovered platelet-derived growth factor (PDGF) by observing that fibroblasts:A.) grew better in cell culture blood plasma without the proteins released by platelets.B.) grew at the same rate in cell culture containing either blood plasma or serum.C.) grew better in cell culture containing blood serum containing proteins released by platelets during clotting.
Kohler and Lipton first discovered platelet-derived growth factor (PDGF) by observing that fibroblasts option B: grew at the same rate in cell culture containing either blood plasma or serum.
When blood coagulation occurs, platelets release PDGF into the serum. This is how PDGF was first identified. Although PDGF is mostly stored in the -granules of platelets, PDGF is also produced by a wide variety of other cell types. This implies that option B is the rigth choice.
Platelet-derived growth factor (PDGF): For cells of mesenchymal origin, such as fibroblasts, smooth muscle cells, and glial cells, PDGF is an effective mitogen. The PDGF signalling network has two receptors, PDGFRalpha and PDGFRbeta, and five ligands, PDGF-AA through -DD (including -AB), in both mice and humans.
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In what direction would your center of gravity shift if you were to carry a heavy briefcase .in you left hand with your arm in 90 degrees of abduction at your side?
If you were to carry a heavy briefcase in your left hand with your arm in 90 degrees of abduction at your side, your center of gravity would shift to the left.
What is the gravity about?The center of gravity is the point in an object or a body at which the weight of the object or body is evenly distributed. When you carry a heavy briefcase in your left hand, the weight of the briefcase is concentrated on one side of your body, which causes the center of gravity to shift in the direction of the weight. In this case, the weight of the briefcase would pull your center of gravity to the left.
So, It's important to note that when the center of gravity shifts, it can affect balance and stability. Carrying a heavy load on one side of the body can make it harder to maintain balance and can increase the risk of falling or injury.
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Researchers hypothesized that red eye color in Japanese koi, a type of fish, is due to a mutation. To study the inheritance of red eye color in koi, the researchers conducted breeding experiments over several generations. The results are summarized in Figure 1.Figure 1. Inheritance of eye color in Japanese koiBased on the data in Figure 1, which of the following is the best prediction of the mode of inheritance of red eyes in Japanese koi?A The allele for red eyes is inherited in an autosomal dominant pattern.B The allele for red eyes is inherited in an autosomal recessive pattern.C The allele for red eyes is inherited in an XX-linked recessive pattern.D The allele for red eyes is inherited in an XX-linked dominant pattern.
The allele for red eyes is inherited in an autosomal dominant pattern.
Which of the above is the most accurate prediction for the red eye inheritance mode?An autosomal dominant inheritance pattern characterizes the red eye allele.
Which sort of inheritance leads in a pink offspring being born to a red parent as well as a white parent?incomplete hegemony When two different phenotypes of organisms are crossed, a third phenotype that combines the qualities of the parents is produced as the result of incomplete dominance.Comparable to combining colours, red and white together create pink.
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Antibiotics can be used to kill the specific pathogenic bacterium, Mycobacterium tuberculosis, that causes tuberculosis. The appearance of antibiotic-resistant strains has made it more difficult to cure M. tuberculosis infections. These antibiotic-resistant bacteria survive and pass on the genes to their offspring, making the resistant phenotype more common in the population.
DNA analysis indicates that the genes for antibiotic resistance are not normally present in bacterial chromosomal DNA.
Which of the following statements best explains how the genes for antibiotic resistance can be transmitted between bacteria without the exchange of bacterial chromosomal DNA?
a. The genes for antibiotic resistance are located on a plasmid that can be passed to neighboring bacteria.
b. double-stranded DNA molecules that provide genes that may aid in survival of the prokaryotic cell.
c. The gene coding for the antigen can be inserted into plasmids that can be used to transform the bacteria
d. Histone methylation opens up chromatin at gene RR so transcription factors can bind to DNA more easily.
The genes for antibiotic resistance are located on a plasmid that can be passed to neighboring bacteria best explains how the genes for antibiotic resistance can be transmitted between bacteria.
What is bacteria?
Bacteria are single-celled microorganisms that belong to the domain Eubacteria. They are the most abundant organisms on Earth and are found almost everywhere. Bacteria are capable of reproduction, metabolizing, and excreting waste. They can come in many shapes and sizes, and are either prokaryotes or eukaryotes. Bacteria play an important role in the environment, as they are essential for nutrient cycling, help to decompose organic matter, and are essential for the production of food. Bacteria can also cause diseases, but they can also be used to produce antibiotics and biotechnological products. Bacteria are also useful in bioremediation and industrial processes. They are also used as model organisms in research.
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a nursing student is reviewing for an upcoming anatomy and physiology examination. which of the following would the student correctly identify as a function of the liver? select all that apply.
The important function of the liver is carbohydrate and glucose metabolism, protein metabolism, and ammonia conversion. So options A, B, D, and E apply.
As the primary regulator of the storage and delivery of glucose to peripheral tissues, and in particular, to glucose-dependent organs including the brain and erythrocytes, the liver serves as the center of carbohydrate and glucose metabolism.
Also, the deamination of amino acids, urea production to remove ammonia, plasma protein synthesis, and interconversions between amino acids are all processes that take place during protein metabolism in the liver.
Since zinc cannot be produced by the body, it must be taken from food. The majority of it is kept in the bone and muscle.
The complete question is -
A nursing student is reviewing for an upcoming anatomy and physiology examination. Which of the following would the student correctly identify as a function of the liver? Select all that apply.
A. Carbohydrate metabolism
B. Ammonia conversion
C. Zinc storage
D. Protein metabolism
E. Glucose metabolism
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the domain of life that is characterized by having histone proteins, and membrane bound nucleus and organelles [x]
The domain of life characterized by having histone proteins, and membrane bound nucleus and organelles is Eukarya.
How does the presence of histone proteins, a membrane-bound nucleus and organelles contribute to the organization and function of eukaryotic cells?The presence of histone proteins, a membrane-bound nucleus, and organelles contribute to the organization and function of eukaryotic cells in several ways:
Histone proteins act as a "scaffold" to package and organize the DNA within the nucleus, making it more compact and allowing for efficient storage and expression of genetic information.
The membrane-bound nucleus serves as a barrier to separate the genetic material from the rest of the cell, protecting it and controlling the flow of molecules in and out of the nucleus. This allows for the regulation of gene expression and cell function.
Membrane-bound organelles such as mitochondria and chloroplasts perform specific functions within the cell. Mitochondria generate energy for the cell and chloroplasts perform photosynthesis in plants. This compartmentalization allows for efficient organization and performance of cellular functions.
Together, these structures allow for the efficient organization, regulation, and performance of cellular functions, contributing to the overall functioning and survival of eukaryotic cells.
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When you swallow the last bite of a divine piece of chocolate and continue to experience the delightful taste for a bit longer, you are utilizing your ________.
A)long-term memory
B)mnemonic devices
C)sensory memory system
D)iconic memory store
Answer:
C
Explanation:
FILL IN THE BLANK increased levels of oxygen in the atmosphere due to photosynthesis caused rates of weathering to , which aided in the formation of _____________
Soil was formed more quickly as a result of increased weathering rates brought on by photosynthesis, which increased the amount of oxygen present in the atmosphere.
Why were cyanobacteria able to produce oxygenation and alter the atmosphere of Earth?These bacteria had the astonishing capacity for photosynthesis, which allowed them to harness the power of the sun. The ability to oxidize water and use it as fuel was possessed by cyanobacteria. The fact that oxygen is a by product of photosynthesis is more relevant.
Which mechanism is primarily to blame for the rise in atmospheric oxygen on Early Earth?Cyanobacteria, also referred to as blue green algae, are the cause. These bacteria carry out photosynthesis, which is the process of converting carbon dioxide, water, and sunlight into sugars and, yes, oxygen.
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In an ideal intercuspal relation, which of the following maxillary cusps will oppose the mesiofacial groove of the mandibular first molar?1. Facial cusp of the second premolar2. Mesiofacial cusp of the first molar3. Distofacial cusp of the first molar4. Mesiolingual cusp of the first molar5. Distolingual cuso of the first molar
In an ideal intercuspal relation, mesiofacial cusp of the first molar is the maxillary cusps will oppose the mesiofacial groove of the mandibular first molar.
Which cusp on the first molar in the maxilla is larger?The mesiolingual cusp is the largest cusp, but it has a blunt and rounded tip. The distolingual cusp is the smallest one that is present. In the four cases presented in this article, a permanent maxillary first molar with three cusps was found.
Food particles are broken up by a series of elevations (points or "cusps") on premolars (bicuspids) and molars. The term "bicuspid" refers to the typical two cusps on each premolar. They are employed to hold and crush food.
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Your instructor asks you to look into your microscope to see a prokaryotic cell. You will be looking for a cell that: A) has a nucleus B) has a membrane C)makes up most of the tissues of your body D) is much larger than most cells in your body E) does not use DNA to code genetic information
You will be looking for a cell that- has a membrane.
In this case, Option B is correct
A membrane is what in biology?
The double sheet that constitutes biological membranes is made up of two lipid bilayers. This structure is commonly referred to as the cell membrane. Along with the various lipid types that they contain, vesicles and sugars play a crucial structural role in biological membranes.
What's the appearance of a membrane?
These membranes, which are also referred to as mucosae, line the bodily canals that open to the outside. The interior of the digestive system is lined with mucous membranes. More examples include the respiratory, excretory, and reproductive systems.
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2. (a) In the control sample histogram, identify the phase of the cell cycle (G1, S, or G2) of the population of cells in each region delineated by vertical lines. Label the histogram with these phases and explain your answer.
No, as the S phase develops, the amount of DNA in each cell varies, giving the S phase cells a variety of fluorescence levels.
Cells are getting ready to divide at the G1 stage. It subsequently enters the S phase, where the cell duplicates all of the DNA, to accomplish this. A newly created cell and its nucleus go through a series of modifications during interphase to prepare for cell division. Three phases make up the process: the first gap, or G1 phase, the synthetic phase, or S phase, and the second gap, or G2 phase. The G1 phase of the cell cycle is a time of cell growth. During this stage, the number of organelles formed, the rate at which protein is synthesised, and the size of the cytoplasm all rise.
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Which of the following is a source of the activation energy needed to reach the transition state intermediate? (choose the ONE best answer) A) kinetic energy of molecules that is converted to chemical bond energy after collision B) chemical bond energy of ATP released when the bond breaks C) potential energy in the bonds of the reactants
B) chemical bond energy of ATP released when the bond breaks
is a source of the activation energy needed to reach the transition state intermediate.
The energy needed to start a chemical reaction and get to the transition state, where the reactants have enough energy to break through the activation energy barrier, is known as activation energy. Using an energy carrier molecule like ATP is one approach to supply this energy. The energy that can be used to produce the activation energy for the chemical reaction is released when a phosphate bond in ATP is broken. The molecules collide with enough force to achieve the transition state and start the chemical reaction once this energy is transformed into kinetic energy.
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According to the map, which region of Africa receives the most precipitation each year?
Southern Africa
Western Africa
Eastern Africa
Northern Africa
Answer:
Southern Africa (Madagascar)
Explanation:
Hope it helps<3Determine the correct order of the genes on the chromosome, given the following information: Genes O and B cross over at a rate of 15% Genes O and I cross over at a rate of 5% Genes I and B cross over at a rate of 20%
A) IBO
B) BIO
C) OIB
D) BOI
D) BOI. Genes are arranged in BOI order.Genes O well I am separated at 5 map units, while genes B and O were separated buy 15 map units. Genes I & B crossover over at an rate of 20%, meaning that they are separated by 20 map units.The gene ordering is therefore BOI.
B-------------O--------I
15 5
What data is stored on each chromosome?Each chromosome has a specific number of "genes," which are like recipes in a cookbook.The almost 20,000 genes encode proteins, which are necessary building blocks of life.
What three traits do chromosomes possess?Your genes are housed in chromosomes, which are components of every cell.There are hundreds of genes connected by a long DNA thread that makes up each chromosome.Cells contain 46 chromosomes, which are divided in 23 pairs.One chromosome from each of your pairs comes from your mother and father.
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which of the following characterized agriculture in both the west and the south in the period 1870-1900?
BOTH the west and the south agriculture in the period 1870-1900 characterized increased production
Both the West and the South in the period 1870-1900 were characterized by an increase in large-scale commercial agriculture, primarily focused on the production of cash crops such as cotton and wheat. Additionally, both regions saw the widespread use of new technologies and farming techniques, as well as the growth of railroads which allowed for easier transportation of crops to market. The use of labor in agriculture was also a common characteristic, in the West it was mainly done by migrant farmers, while in the South it was done by sharecroppers and tenant farmers.
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the complete question is :
Which of the following best describes agriculture in the south and west between 1870 and 1900?
1 - increased production
2- decreased production
3- no production
for water to travel across a cell membrane at a substantial rate, the water molecules travel through protein Channel is known as the aquaporins is that simple diffusion, facilitated diffusion, or a active transport
Channel is known as facilitated diffusion. Aquaporins are proteins that act as channels in the cell membrane to allow water to pass through.
What is facilitated diffusion?
Facilitated diffusion is a type of passive transport process where molecules or ions are transported across a plasma membrane with the help of carrier proteins. It is a vital part of the cell's membrane transport system and can move solutes in and out of the cell. Unlike simple diffusion, facilitated diffusion does not require any energy expenditure. This type of transport is especially important for molecules that cannot pass through the membrane on their own, such as glucose. The carrier proteins bind to the molecules on one side of the membrane, then undergo a conformational change that allows them to move across the membrane, and finally release the molecules on the other side. This process is constantly occurring in cells and helps maintain cellular homeostasis.
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review the information to the right. read the introduction and examine the photograph of a chromosome. list three chromosome features used in chromosome identification:
Three crucial characteristics are used by researchers to "read" a pair of chromosomes to determine their similarities and differences: Size, banding style, and centromere placement
Size: This method of distinguishing chromosomes is the simplest.banding style:Each chromosome is different because of the size and position of the Giemsa bands. centromere placement:location of the centromere Centromeres have a constricted appearance.. The related proteins that give the connecting nucleic acid bases on a chromosome their shape are made up of a string of DNA. Since the chromosome is in a loose shape during interphase of the cell cycle, proteins may be translated from the DNA and DNA can be duplicated.Chromosome Diagram The 23 pairs of chromosomes that make up our genetic material are very different in size and structure. The biggest chromosome is chromosome 1, which is more than three times larger than chromosome 22. Our sex is determined by two unique chromosomes called X and Y, which make up the 23rd pair of chromosomes.
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which of the following membrane configurations (shown in blue) will result in the greatest rate of atp production?
The membrane configuration in the figure that will result in the greatest rate of ATP production is the one that has the most inner membrane infoldings, or cristae.
This configuration will allow for increased surface area, which will increase the efficiency of the electron transport chain and therefore increase ATP production.
What is ATP production?
ATP production is the process by which cells within living organisms use energy from nutrients to produce the molecule adenosine triphosphate (ATP).
ATP is the main energy source for most cellular processes and is essential for life. During ATP production, energy from nutrients such as carbohydrates, fats, and proteins is converted into a form that can be used by the cell.
This process involves a series of chemical reactions, with the most important being the oxidation of the energy-rich molecules.
Therefoe, The membrane configuration in the figure that will result in the greatest rate of ATP production is the one that has the most inner membrane infoldings, or cristae.
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Examine the chart above on the causes of fertile soil decline. After examining the chart which of the following has the largest impact on fertile soil decline?
Too many people are using the land for firewood
People are allowing their animals to overgrass the land
People are cutting down too many trees
Growing too many crops if causing a lot of fertile soil loss
a dna molecule consists of two polynucleotide strands hydrogen bonded to each other. the hydrogen bonding is very specific. which of the following nitrogenous bases will form complementary base pairs in dna?
Answer:
The adenine and thymine are bonded together by two hydrogen bonds. This is known as complementary base pairing.
Explanation:
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list all of the components of the bronchial tree discussed in your notes in order of largest to smallest
Poor Anatomy at the point where the trachea divides, the bronchial tree begins. The trachea merges superiorly with the larynx and descends to form the bronchial tree in the lungs.
What is the bronchial tree?The bronchi and all of their succeeding branches are referred to collectively as the "bronchial tree." The lower respiratory system's airways are called bronchi. The right and left major bronchi emerge from the trachea at the level of the third or fourth thoracic vertebra. More vertically oriented than the left, the right major bronchus is also shorter. To evenly distribute the breathing air into the left and right pulmonary lobes, both of these bronchi continue to divide into secondary or lobar bronchi that continually split into two. Each bronchus has millions of cells in its terminal region gas exchange occurs in alveoli, the place.To Learn more About bronchial tree refer to:
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What is called the ATP synthesis process coupled with the oxidation of reduced equivalents in the respiratory chain?
It is known as oxidative phosphorylation where ATP synthesis process is coupled with the oxidation of reduced equivalents in the respiratory chain
It Consist of 2 things, one is electron transport chain system which has 4 complexes, complex I is called NADH dehydrogenase complex, complex II is called Succinate-Q oxidoreductase complex, complex III is called Q-cytochrome C oxidoreductase and complex IV is called Cytochrome C oxidase.
here ETC is located in the inner membrane of mitochondria, which transport the H+ in the intermembrane from matrix.
And, one is ATP synthesis process which consist of complex V, here ATP synthase works transport H+ from intermembrane back to matrix and produce ATP.
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1. Convert 4.52 x 10 26 atoms of gold to moles of gold.
Answer:
7.5056365964E-24 Moles
Explanation:
The thyroid's hormones regulate vital body functions, including:Breathing Heart rate Central and peripheral nervous systems Body weight Muscle strength Menstrual cycles Body temperature Cholesterol levels
The thyroid's hormones regulate vital body functions, including Breathing, Heart rate, Central and peripheral nervous systems, Body weight, Muscle strength Menstrual cycles, Body temperature and Cholesterol levels.
These are the secondary function, the primary function of thyroid gland is to produce thyroxine, which is generally T3 and T4
Levels of T3 and T4 need to be maintained as if they are too low or too high, it could cause problems. pituitary and hypothalamus maintain it.
Thyroid gland is a 2-fold gland which is present around the trachea and is located at the base of neck.
This hormone is also responsible for producing calcitonin, which stimulates the formation of bone and helps regulate the amount of calcium in the blood.
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Which of the marrows cells from the list below has highly granular basophilic cytoplasm but does not show nuclear lobules?
Mast cells of the marrow cells have highly granular basophilic cytoplasm but do not show nuclear lobules. In addition to being visible in bone marrow aspirates, basophilic stippling is a common sign of hematologic illness in the peripheral blood.
One of numerous clinically important erythrocyte inclusions found on peripheral blood smears is basophilic stippling. Basophilic stippling is thought to be caused by ribosome aggregates or ribosomal RNA fragments that have collected throughout the cytoplasm of circulating erythrocytes. This discovery is connected to inherited and acquired hematologic conditions that impact erythropoiesis and erythrocyte maturation. When a proper clinical history is taken into account, alternative causes of basophilic stippling such hemoglobinopathies, nutritional inadequacies, and myelodysplasia should also be taken into account.
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