Answer:
To observe the metal-stained surface of a dead fly: Scanning Electron Microscope (SEM)To view living microorganisms (micro = small) swimming in pond water: Compound Light Microscope (CLM)To view a very thin, heavy metal-stained cross-section of a liver cell: Transmission Electron Microscope (TEM)To view a metal-coated bacteria on a single cell of a finger: Scanning Electron Microscope (SEM)To view a cross-section of a finger: Transmission Electron Microscope (TEM)give me brainiest
How do I calculate my BMI formula?.
With height and weight, a person's body mass index can be calculated using simple math. In order to calculate BMI, divide weight by height in meters squared: kg = weight in kilograms/m2.
Based on a person's height and weight, the body mass index is calculated. As weight is measured in kilograms and height is measured in meters, the BMI is calculated by dividing the body weight by the square of the height. It is expressed in kilograms per square meter (kg/m2). BMIs between 18.5 and 24.9 fall into the Healthy Weight range. You are considered overweight if your BMI is between 25.0 and 29.9. If your BMI exceeds 30.0, you are considered obese.
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What process allows the amount of DNA in an organism's cells to be kept constant in sexually reproducing species?
O binary fission
O reduction division
O fertilization
O mitosis
What process allows the amount of DNA in an organism's cells to be kept constant in sexually reproducing species?
Meiosis is the process through which sexually reproducing organisms maintain their particular chromosomal numbers from generation to generation. In humans, meiosis generates sperm and eggs, each having 23 chromosomes. By fertilizing sperm and ova, the chromosome number is restored in the zygote (46 chromosomes).
The sperm and egg carry half as many chromosomes as body cells since they are haploid (n) (in humans, 23 in each sperm and egg).
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Which of the following statements taxonomy systems is false
The hierarchical classification system is the basis for taxonomic classification. So, the correct option is (D).
What is Hierarchical classification?Hierarchical taxonomy is defined as a hierarchy, or system of grouping things according to levels and orders, where plants can be classified according to environment, agriculture, or morphology.
The military uses a hierarchical classification in which they organize their members: majors are at the top, followed by colonels, captains, and then sergeants. Species classification is another example of hierarchical classification.
Thus, the hierarchical classification system is the basis for taxonomic classification. So, the correct option is (D).
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Your question is incomplete, but most probably the complete question is:
Which of the following statements about taxonomy systems is false?
A. Phylogeny and the Linnaean system give us the same results.
B. The hierarchical classification and the Linnaean system give us the same results.
C. The phylogeny system traces organisms according to their evolutionary history.
D. The hierarchical classification system is the basis for taxonomic classification.
Interneurons in a withdrawal reflex are located in the ____________.
Interneurons in a withdrawal reflex are located in the CNS
what is CNS?
The central nervous system (CNS) is made up of brain and spinal cord. It is one of 2 parts of nervous system. The other part is peripheral nervous system, which consists of nerves that connect the brain and spinal cord to rest of the body. The central nervous system is the body's processing centre.
The central nervous system is made up of brain and spinal cord: The brain controls how we think, learn, move, and feel. The spinal cord carries messages back and forth between the brain and nerves that run throughout body
Cranial nerve function
I. Olfactory nerve. The olfactory nerve sends sensory information to your brain about smells that you encounter. ...
II. Optic nerve. ...
III. Oculomotor nerve. ...
IV. Trochlear nerve. ...
V. Trigeminal nerve. ...
VI. Abducens nerve. ...
VII. Facial nerve. ...
VIII. Vestibulocochlear nerve.
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which hormone stimulates the mammary glands to produce milk after childbirth?
After childbirth, the hormone prolactin plays a major role in stimulating the mammary glands to produce milk.
Prolactin is the hormone that is released by the pituitary gland in response to the suckling of the baby, and is essential in the production of milk.
It helps to control the growth and development of the mammary glands, and also helps to regulate the production and release of milk.
Additionally, oxytocin is released during breastfeeding, which helps to cause the milk to flow from the mammary glands.
Additionally, it can have an impact on the immune system and bone health.
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What solves the problem of the cell growing too large?.
In order to increase the surface to volume ratio of the cells, cell division reduces the volume of cytoplasm in the two daughter cells and divides up the duplicated DNA and organelles.
If cells get too big, they face three basic issues. Diffusion moves too slowly to deliver materials to the interior of an oversized cell. Diffusion also struggles to remove all the wastes from an overly big cell. Large cells have a smaller surface area in relation to their size. Large cells have a lower surface area to volume ratio, is how this is typically put. The plasma membrane, which is located on the surface, is responsible for allowing the proper materials to enter and exit the cells. The surface area of cells does not grow at the same rate as their volume.
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Describe the function and purpose of the Na+/K+ pump in re-establishing the resting membrane potential?
The function of the Na+/K+ pump in re-establishing the resting membrane potential is that the Na+K+-ATPase pump helps to maintain osmotic equilibrium and membrane potential in cells.
What is the resting membrane potential?The resting membrane potential is the voltage across a given cell membrane during the resting stage.
The purpose of the Na+/K+ pump in re-establishing the resting membrane potential is for the sodium and potassium to move against the concentration gradients.
The Na+ K+-ATPase pump maintains the gradient of a higher concentration of sodium extracellularly and a higher level of potassium intracellularly.
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Did St Germain poison Claire?.
A few weeks later, the Comte follows through on his threats by poisoning Claire with bitter cascara, making her very ill and making her fear she is about to lose her unborn child.
The Comte loses his ship, cargo, and earnings when Claire Fraser publicly acknowledges this, and he issues a warning to her that she will pay for her conduct.
Tom eventually learns the truth. Before passing away, Malva tells him that she caused their illnesses. She had poisoned Claire and Tom after obtaining pieces of the deceased Sin Eater. Getting Claire out of the way was her only option if she intended to approach Jamie.
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Which organic compound essential to cells is missing from the chart, and what function does it serve in cells?
Inorganic
Compound:
Function:
carbohydrates
provide short term
energy for cells
lipids
found in cell
membranes
?
Reset
?
OA. ATP-nutritionally important substance that come from the Earth.
OB. minerals - universal energy source of cells
OC. minerals -nutritionally important substance that come from the Earth.
O D. ATP-immediate energy source for cells
Next
nucleic acids
information
system for cells
amino acids
building blocks of
proteins
proteins
form many
structures within
cells
Answer:
Explanation: A ATP-nutritionally important substance that come from the Earth
How successful was the New Deal in achieving relief recovery and reform?.
The three waves of relief recovery and reform in the New Deal were viewed as successful in boosting the economy and lessening the effects of the Great Depression. The Social Security System and the FDIC are just two examples of important New Deal reforms that are still present today.
Reform, recovery (of the economy through federal expenditure), and relief (for the unemployed) are often used as shorthand for the New Deal (of capitalism, by means of regulatory legislation and the creation of new social welfare programs).
The Relief, Recovery, and Reform (RRR) initiatives of FDR concentrated on emergency relief initiatives, stock market and bank regulation, debt relief, debt management, industrial recovery, and the introduction of public works construction projects. The objectives of recovery were to repair the economy and put an end to the Great Depression.
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product remaining after the animal carcass has been processed
A byproduct is the item that remains after the animal corpse has been processed. The result is the required response.
The body of an animal that has been stripped of its head, legs, tail, hide, and internal organs is known as a carcass. Animal byproducts, or ABPs, are compounds that come from animals but are not intended for human consumption. One example of an ABP is waste from slaughterhouses, which includes skin, bones, horns and hooves, blood, fat, and offal.
In actuality, rendered animal products can serve as the foundation for a wide range of other items, including soaps, paints, candles, plastics, and rubber goods. There is zero chance that any bacteria or viruses will remain in the processed carcasses because all animal by-products are sterilized at extremely high temperatures.
A rendering industry byproduct is meat and bone meal (MBM). Typically, it contains 4-7% water, 8-12% fat, 33-35% ash, 48-52% protein, and more. To enhance the amino acid profile of the feed, it is largely employed in the formulation of animal feed.
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a normal colorblind female and a colorblind male have a colorblind girl, what is the probability that they have a colorblind son
Answer:
100%
Explanation:
cause both parent are colorblind
What is the importance of knowing what is wrong with our Reproductive System?
What is the main concept of natural selection?.
Natural selection is a straightforward method that results in long-term population changes in living things. It is actually so straightforward that it can be divided into five fundamental steps: variation, inheritance, selection, time, and adaptation. The co-discovereres of natural selection are Darwin and Wallace.
The process through which populations of living things adapt and change is known as natural selection. A population's members are naturally varied, which means that they are all distinctive in some ways. Because of this variety, some people have characteristics that suit their surroundings more than others. In contrast to "artificial selection," which refers to practices like purposeful cross-breeding and selection for qualities that are appealing to people, "natural selection" refers to the process of choosing organisms with particular traits that is entirely motivated by nature.
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which statement describes the conditions in which diamonds form?
Answer: A
Diamonds are formed under great pressure. Simply put, diamond formation occurs when carbon deposits deep within the earth(approximately 90 to 125 miles below the surface) are subject to high temperature and pressure. Some stones take shape in a matter of days or months, while others take millions of years to materialize.
macromolecules in which class have the key function of storing genetic information?
Genetic information is stored, transmitted, and expressed by nucleic acids, which are polymers. The sequences of monomers that make up nucleic acids are coded with this data.
Macromolecules are what?In essence, macromolecules are polymers—lengthy sequences of molecular building blocks known as monomers. Long polymers are present in carbohydrates, proteins, and nucleic acids. They are referred to as macromolecules since they are polymeric and huge in size.
What are macromolecules, and what are their purposes?A cell is made up of several large molecules known as macromolecules, which give it vital life-supporting functions. For instance, macromolecules offer structural support, a way to store energy, the capacity to store and retrieve genetic data, and the capacity to quicken metabolic processes.
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The Purpose of the Fruit is to assist the Plant in Water & Glucose Retention
O True
O False
The carbon dioxide and water are converted by plants into a sugar known as glucose using the power of the sun. Plants use glucose as a source of energy and to create other compounds like cellulose or starch. Cell walls are constructed using cellulose. As a food source, starch is kept in seeds or other plant parts.
What foods raise blood sugar?In general, foods that are high in carbs, which are easily transformed into energy, such rice, bread, fruits, and sugar, cause blood sugar levels to rise the fastest.
What causes a glucose shortage?taking much insulin. not consuming enough carbohydrates for your insulin dosage. timing of insulin administration. physical activity level and time
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Unlike researchers who conduct quantitative research, researchers who conduct qualitative research are more likely to __________.
a. use statistical analysis
b. collect and analyze data simultaneously
c. focus on scientific objectivity
d. use a larger sample
Unlike researchers who conduct quantitative research, researchers who conduct qualitative research are more likely to b) collect and analyze data simultaneously.
Qualitative research is a type of research that seeks to understand the underlying meaning of phenomena through the interpretation of data.
Unlike quantitative research, which relies heavily on numerical and statistical data, qualitative research focuses on data that is collected and analyzed simultaneously.
This method of research allows for more in-depth exploration of topics and provides a richer, more comprehensive understanding of the topic being studied.
Qualitative research is often used in fields such as psychology, sociology, anthropology, education, and public health, where a deeper understanding of the data is desired.
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Who introduced the concept of natural selection?.
The concept of natural selection was introduced by Charles Darwin and Alfred Russel Wallace in the 19th century.
They independently proposed the idea that species evolve over time through a process of natural selection, in which certain variations that confer an advantage in survival and reproduction are passed on to future generations. This theory is considered one of the most important scientific ideas of all time and is the foundation of the modern theory of evolution.
Key points:
Charles Darwin and Alfred Russel Wallace introduced the concept of natural selection in the 19th century.Natural selection is a process through which certain variations that confer an advantage in survival and reproduction are passed on to future generations.The theory of natural selection is the foundation of the modern theory of evolution.It explains how species change over time through the mechanism of heritable variations and the process of natural selection.It is one of the most important scientific ideas of all time.Learn more about the natural selection here:
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What is the centromere of a chromosome?.
The centromere of a chromosome is the round center of the chromosome.
Chromosomes are fine threads made of protein and one DNA molecule that can absorb color. Chromosomes are diploid cells that contain genetic information that can be passed on to their offspring. Human chromosomes consist of 46 chromosomes or 23 pairs of chromosomes.
The chromome has a structure consisting of centromeres, chromatids, telomeres, chromomeres and satellites. The centromere is the central part of the chromosome which is usually round in shape and functions at the time of division through the kinetochore which causes the spindle thread to attach to each opposite pole.
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What type of mutation is insertion?.
An insertion is the addition of one or more nucleotide base pairs to an existing DNA sequence (also known as an insertion mutation).
Due to the DNA polymerase sliding, this might frequently occur in microsatellite regions. A single base pair mistakenly inserted into a DNA sequence or an entire region of a chromosome can both be considered insertions. The smallest single base insertion mutation changes are thought to occur when the template and primer strands are base-paired separated, followed by non-neighbor base stacking, which can take place locally within the DNA polymerase active site. An insertion on a chromosome level denotes the addition of a longer sequence into a chromosome. Uneven crossover during meiosis is a factor that can cause this.
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Are there only 46 chromosomes in each cell?.
There are only 46 chromosomes in each cell. True. Chromosomes in a cell are 46 chromosomes or 23 pairs of chromosomes.
Genes are information containing the characteristics of living things that can be passed on to their offspring stored in DNA. Genes consist of DNA spun by histone proteins and arranged in a linear and orderly sequence at loci on chromosomes.
Chromosomes are fine threads that easily absorb color and function as hereditary carriers. In humans, the number of chromosomes in a diploid cell is 46 or 23 pairs of chromosomes. The chromosomes consist of 44 pieces or 22 pairs of body chromosomes (autosomes) and a pair of sex chromosomes (gonosomes), namely XX in females and XY in males.
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When cells make proteins, why do they make a copy of mRNA to send out of the
nucleus to the ribosome? Why don’t they just send a piece of the original DNA, to
make sure there can’t be any mistakes?
Simply said, you need to maintain and preserve your DNA. The cell creates an intermediate mRNA as a result, rather than delivering it to the cytoplasm where it may undergo a variety of changes. If there is a problem with the mRNA, the cell has the option of discarding it and creating another copy.
After translation, the new copy of the mRNA is also thrown away. Amplification is another option; rather than producing one protein from one gene on a DNA strand, followed by another and another, we can simply produce a large number of copies of mRNA and send them to the nucleus, where we can produce as many proteins as we require. There is very little alteration to the original DNA strand while performing this. By doing this, the original DNA strand is barely touched and the cell produces a large amount of material quickly.
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How can artificial selection decrease a population's biodiversity?a. it removes weaker species, leaving stronger species behind to reproduce. b. it selects which traits (good or bad) are passed onto the next generation. c. it increases the rate of natural selection and change within a population. d. it reverses natural selection by selecting species most adapted to survive.
By reducing the rate of natural selection and change within a population, artificial selection reduces population diversity.
Artificial selection happens when people choose individuals based on their desired qualities or personalities; this covers both plants and animals.
Natural selection takes place in nature; here, qualities that are inheritable and enable an individual's survival and reproduction, leading to an increase in population, are selected.
Natural selection can no longer take place when qualities and personalities are chosen for artificial selection. This also limits the number of genotypes because only those who are interested are advanced while others are not.
Natural selection promotes diversity by choosing individuals with the best genotypes for survival. As a result, artificial selection slows down natural selection and population change.
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This figure shows a phylogenetic tree of birds and their close relatives. Identify the monophyletic taxon.
Birds and crocodiles and their common ancestor
Birds and dinosaurs and their common ancestor
Birds and the common ancestor of dinosaurs and birds
The monophyletic taxon in this figure would be "Birds and the common ancestor of dinosaurs and birds". This taxon includes birds, their ancestors, and all the descendants of that ancestor.
What is the significance of a monophyletic group in a phylogenetic tree?A monophyletic group in a phylogenetic tree represents a group of organisms that share a common ancestor and all the descendants of that ancestor. It is considered a natural group, as it reflects evolutionary relationships among organisms. Understanding monophyletic groups can help scientists to infer evolutionary relationships, track the diversification of organisms, and infer the characteristics of their common ancestor. Monophyletic groups are important in evolutionary biology because they reflect the true evolutionary relationships among organisms and help us understand how different groups of organisms have evolved over time.
The other two options are not monophyletic because they include other groups of animals that are not directly related to birds (crocodiles and dinosaurs). A monophyletic group is a group of organisms that share a common ancestor and all the descendants of that ancestor.
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What is the importance of studying the basic concepts of the theory of evolution?.
The importance of studying the basic concepts of the theory of evolution is that it helps to explain the diversity of life on Earth, the relationships between different species, and the mechanisms that drive the process of evolution.
Key points:
The theory of evolution explains how species change over time.Understanding the basic concepts of evolution helps to explain the diversity of life on Earth.It helps to understand the relationships between different species.It explains the mechanisms that drive the process of evolution.It has important implications for fields such as medicine, agriculture, and conservation biology.It is a scientific explanation for the origin of species.Understanding the theory of evolution provides a scientific framework for understanding the natural world.It can help individuals make informed decisions about scientific and social issues.Learn more about the theory of evolution here:
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What should be the first two steps in resuscitating this infant?.
The first step in resuscitating the infant is ensuring clearance of the airway. The second step is to provide positive pressure ventilation.
A series of procedures known as "neonatal resuscitation" is used to support a newborn's airway, circulation, and breathing. To provide warmth, the newborn should be put beneath a radiant heat source. The baby should then be dried off, their airway should be cleared with a bulb syringe or suction catheter if necessary, and their breathing should be stimulated.
Ensure the airway is clear in the first step. This procedure makes sure that the airway is open and unhindered. To get rid of any mucus or other debris, this may involve gently suctioning the baby's lips and nose.Positive pressure ventilation is done in the second phase. Positive pressure ventilation (PPV) is provided using a bag and mask or other ventilation devices if the infant is not breathing or is not breathing enough.To know more about neonatal resuscitation:
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In the seventeenth century, francesco redi performed experiments using raw meat placed in jars. Half of the jars were covered, and half were left open. Redi noticed that the meat in the sealed jars did not have maggots, but the meat in the open jars did have maggots. Redi concluded that only flies could make more flies. Which part of the cell theory corresponds to redi's findings?.
The cell hypothesis includes a statement that says, "New cells come from the old cells," which is consistent with Francesco Redi's findings.
Francesco Redi's experiments in the 17th century provided the first substantial evidence disproving spontaneous generation by demonstrating that flies are required for the development of maggots on meat. He demonstrated biogenesis and refuted the hypothesis of spontaneous generation. He set up a straightforward experiment using two jars, both containing dead fish and meat, with the exception that one was kept totally closed and the other was left open. Redi went on to show that while live maggots or flies will reproduce when placed on decomposing flesh in a sealed jar, dead ones would not. This ruled out the existence of any necessary component in extinct organisms as well as the requirement of fresh air for the creation of life.
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Which of the following is least likely to produce recombinant chromosomes? A., crossovers between homologous chromosomes
Choice B., crossovers between non-sister chromatids
Choice C., crossovers between sister chromatids
B. crossovers between non-sister chromatids is least likely to produce recombinant chromosomes.
During meiosis, homologous chromosomes pair up and exchange genetic information through a process called recombination or crossing over. This process can happen between homologous chromosomes, as well as between sister chromatids, which are identical copies of a single chromosome.
A crossover between homologous chromosomes is most likely to produce recombinant chromosomes, as it leads to the exchange of genetic information between different chromosomes. This results in the creation of new combinations of genetic information, which can lead to genetic diversity.
A crossover between sister chromatids is also likely to produce recombinant chromosomes, as it leads to the exchange of genetic information within a single chromosome.
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in which direction does the dna polymerase build a new strand
During replication, the fact that DNA polymerases can only make DNA in the 5' to 3' direction is problematic.
An anti-parallel DNA double helix is always present; To put it another way, one strand extends from 3 to 5 feet, while the other extends from 3 to 5 feet.
The lagging strand is the new strand's name. Why is this?However, the other parent strand that runs from 5' to 3' is synthesized piece by piece rather than continuously. Because it lags slightly behind the leading strand, it is referred to as the lagging strand.
Why does DNA polymerase increase from 3 to 5?Because DNA polymerase acts on the 3'-OH of the existing strand to add free nucleotides, DNA replication proceeds in the 5' to 3' direction.
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