The right atrium receives the deoxygenated blood from the systemic system first.
What does the term heart chamber means?
There are four empty places in your heart that make up your heart chambers. Your right atrium and left atrium are the names of your upper chambers. The terms "right ventricle" and "left ventricle" refer to your lower chambers. Your chambers cooperate to control the rate of your heartbeat.
The heart has two atria and two ventricles, making up its four chambers.Blood with low oxygen content is drawn from the body and pumped to the right ventricle via the right atrium.The blood with less oxygen is sent to the lungs via the right ventricle.Blood that is rich in oxygen is drawn from the lungs and pumped to the left ventricle by the left atrium.Blood enriched in oxygen is pumped to the body by the left ventricle.Hence right atrium receives deoxygenated blood
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how might the daily experiences of people contribute to the belief the earth's species do not change
Like all living things, humans rely greatly on other species, and the extinction of one species can have a profound effect on many others.
What impact do people have on the evolution of other species?A range of 'contexts', such as hunting, harvesting, fishing, agriculture, medicine, climate change, pollution, eutrophication, urbanization, habitat fragmentation, biological invasions, and emerging/disappearing diseases, have been documented as examples of this human-induced current evolution.When we contract the flu virus or fight it off, for example, evolution is at work in our daily lives. Some of our most urgent global health issues are also influenced by evolution. For instance, the human immunodeficiency virus (HIV) develops more quickly than the immune system can keep up.Like all living things, humans rely greatly on other species, and the extinction of one species can have a profound effect on many others.To learn more about species refer to:
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How many penicillin molecules would you have if you had 36 hydrogen atoms total? What would be the total atomic mass?
HELPPPPPP!!!!!!!!!!
Answer: The total penicillin molecule would be 2 with an atomic mass of 334 amu for each molecule of penicillin.
Explanation: the molecular formula of penicillin is C16H18N2O4S
No. of hydrogen atoms in total 36
no. of molecules = 36/ 18 =2
the molecular weight of penicillin is 334 amu
so the total weight of the two molecules is 668 amu
what explanation of inheritance suggests that hereditary traits are determined by discrete units that are transmitted from one generation to the next?
dna is replicated using what
The DNA is then replicated by a protein called DNA polymerase by matching bases to the original strand.
What components makes up duplicated DNA?Two DNA molecules made up of one new and one old chain of nucleotides are produced as a result of DNA replication. Due to the fact that only half of the replication chain is made up of original DNA molecules, DNA replication is referred to as being semi-conservative.
Why and how does DNA replicate?Before dividing, cells must copy their DNA. This ensures successful inheritance of genetic traits by giving each daughter cell a copy of the genome. The fundamental mechanism of DNA replication is conserved across all organisms, making it a crucial process.
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based on the histology of a renal tubule, which section would be most severely inhibited if simple squamous epithelium were damaged?
The section would be most severely inhibited if simple squamous epithelium were damaged in a Thin segment of the nephron loop.
The lumen consists of a simple squamous epithelium. This part of the nephron is difficult to distinguish from adjacent capillaries, except for the lack of red blood cells in the lumen. Finally, there is the distal tubule. These tubules are fewer in number than the proximal tubules.
The renin-angiotensin-aldosterone system is primarily involved in blood pressure regulation by regulating blood volume sodium reabsorption potassium secretion water reabsorption, and vascular tone. The myogenic response is the reflex response of afferent arterioles to changes in blood pressure. Increased blood pressure increases the tension in the walls of blood vessels and causes the smooth muscles of blood vessels to contract.
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which statement is true about plants?
a. plants perform photosynthesis to break down glucose into useable energy
b. plants perform cellular respiration to generate usable chemical energy in the form of ATP
c. plants perform photosynthesis to produce large quantities of ATP
d. plants perform cellular respiration to generate glucose as a product
c. plants perform photosynthesis to produce large quantities of ATP
Answer: b) plants perform cellular respiration to generate usable chemical energy in the form of ATP
Explanation:
plants carry photosynthesis to convert carbohydrates from co2 (hence a is incorrect)
plants use glucose (made by photosynthesis) to make ATP during respiration (therefore b is correct)
plants perform photosynthesis to produce carbohydrates, ATP is made afterwards, during respiration (hence c is incorrect)
The Rule of 70 says that if one divides 70
by the percent value of growth
(expressed as a whole number), the
result will equal the time needed for a
population to
A. triple
B. double
C. maintain zero population growth
D. collapse
The Rule of 70 says that if one divides 70 by the percent value of growth (expressed as a whole number), the result will equal the time needed for a population to maintain zero population growth. Thus, option C is correct.
What is population?
This is the term that is used to refer to the given number of people that are known to live in a particular geographical area. The population dynamics has to do with the way that the population is said to change over a period of time.
The true option about population and population dynamics is Population – Inhabitants of a country; Population dynamics the change in the population.
Therefore, The Rule of 70 says that if one divides 70 by the percent value of growth (expressed as a whole number), the result will equal the time needed for a population to maintain zero population growth. Thus, option C is correct.
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4.9. The allele for black noses in woives dominant ove the allele for brown noses. There no known selective advantage for one nose color over another In wolves. If this remains true; which of the following statements most Iikely TRUE about the change in wolf nose colors over many generations? Black noses becomcMorc common than they are nOW Black noses will stay about Ihe same Irequency as now Black noses will become less common than they are now Brown noses will disappear after enough generations pass Aeemt Answver 5aved SimUText seivet. Q4.10. large population of Iand turtles 0n an isolated Island has two alleles for & that determines shell thickness The allele for thinner shells dominant over the gene allele for thicker shells. The thinner-shell allele occurs at frequercy of 8096- Assuming there is no net advantage thlck or thin shells what should the frequency of homozygous thlcker-shelled turtles be in the population? (Hint: Use large Punnett square [0 calculate the answer:) 1690 5080 6493 1/1 Iijt
The black noses will stay about the same frequency as they are now. Thus, the correct option is B.
The frequency of homozygous thicker-shelled turtles will be 64% in the population.
The ability of an organism to survive and reproduce more successfully than other organisms in a population in a certain environment is known as a selective advantage. It serves as the foundation for population evolution through natural selection.
In wolves, the allele for a black nose predominates over the allele for a brown nose. There is no selective advantage, though. As a result, the frequency of the black nose character won't change.
Punnett Square Explanation:
Frequency of dominant allele (say p) = 0.4
Frequency of recessive allele (say q) = 1- 0.4 = 0.6
Frequency of homozygous dominant individuals (AA)= p2= (0.4)2= 0.16
Frequency of heterozygous individuals (Aa)= 2pq = 2(0.4)(0.6) = 0.48
Frequency of homozygous recessive individuals (aa)= q2= (0.6)2= 0.36
The correct questions are:
4.9. The allele for black noses in wolves is dominant over the allele for brown noses. There is no known selective advantage for one nose color over another in wolves. If this remains true, which of the following statements is most likely TRUE about the change in wolf nose colors over many generations?
Black noses will become more common than they are now.
Black noses will stay about the same frequency as now.
Black noses will become less common than they are now.
Brown noses will disappear after enough generations pass.
4.10. A large population of land turtles on an isolated island has two alleles for a gene that determines shell thickness. The allele for thinner shells is dominant over the allele for thicker shells. The thinner-shell allele occurs at a frequency of 80%. Assuming there is no net advantage to thick or thin shells, what should the frequency of homozygous thicker-shelled turtles be in the population? (Hint: Use a population Punnett square to calculate the answer.) ? 4% 16% 50% 64%
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Which of the following are non-point sources of water pollution?
A Drainage of water from a city
B Factory chimney
C Farms
D Sewage pipe
Non-point causes of water Pollution include farms.
What are the four primary nonpoint sources of pollution?As a result, nonpoint source pollution does not comply with the Clean Water Act's definition of "point source." Nonpoint source contamination can be divided into four categories: pathogens, hazardous chemicals, nutrients, and sediments. Sediments are bits of dirt that rainwater carries into bays, lakes, rivers, and streams.
Which of the following is not an element that pollutes water?The appropriate response is Glacier. A glacier is a source of fresh water, not a water pollution. The main causes of water pollution are bacteria, viruses, parasites, pesticides, pharmaceuticals, plastics, feces, nitrates, phosphates, and even radioactive materials.
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How does the Ras protein transmit a signal from outside the cell into the cytoplasm?
a) Inactivated Ras proteins transduce a signal, which activates the transcription of genes that start cell division.
b) Activated Ras proteins transduce a signal, which activates the transcription of genes that start cell division.
c) Activated Ras proteins transduce a signal, which inactivates the transcription of genes that supress cell division.
d) Inactivated Ras proteins transduce a signal, which inactivates the transcription of genes that supress cell division.
Activated Ras proteins transduce a signal, which activates the transcription of genes that start cell division.
What is RAS?
RAS proteins are important for normal development. Active RAS drives the growth, proliferation, and migration of cells. In normal cells, RAS receives signals and obeys those signals to rapidly switch between the active (GTP) form and the inactive (GDP form) states.
Activated Ras proteins transduce a signal, which activates the transcription of genes that start cell division.
Cell growth-promoting signal is linked to the Ras type protein, Ras type protein is a monomeric guanine nucleotide-binding protein, having the GTPase activity, it is an inactive condition when GDP is bound and active when bound to GTP.
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(g) (i) Explain why stem cells can be used to make large quantities of red blood cells.
(Lines 22 and 23)
Answer: 1
Explanation:
Since pluripotent stem cells have the potential to make any cell type of the body, they could potentially provide an unlimited supply of red blood cells. It is already possible to make small numbers of red blood cells from pluripotent stem cells in the lab.
Where do secondary bronchi supply air to?
Your lungs receive air through the bronchi. The bronchioles at the end of the bronchi transport air to the alveoli, which are tiny sacs in your lungs. Your body's alveoli carry out gas exchange.
Air travels via your bronchi to and from your lungs. The bronchi also function as a filter for foreign particles and moisturisers for the air you breathe. Your airways are coated with mucus-producing cells. Your airways are kept wet by the mucus. In order to safeguard your lungs and stop infection, it also captures bacteria, viruses, fungus, and other particles. Cilia, which like microscopic hairs, line the bronchi. The cilia assist in removing particles and mucus (phlegm) from your lungs. The bits stuck in the mucus leave your body or enter an external source when you cough or swallow.
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Rapid blood loss of ______ quart(s) or more in an adult can lead to shock and death A. 1 B. 2 C. 3 D. 4
Rapid blood loss of one quart or more in an adult can lead to shock and death. So option a. is correct.
You can lose quite a bit of blood without experiencing any side effects or complications. The exact amount depends on your size, age, and general health. Typical causes of blood loss- giving a blood sample for testing at the doctor's office, menstruation, or a nosebleed- won't usually cause complications. But sustaining an injury or undergoing surgery may cause severe bleeding and require a red blood cell transfusion.
When blood loss nears 30 to 40 percent of total blood volume, your body will have a traumatic reaction.
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DDT is an insecticide that was first used in 1940s to kill mosquitoes and stop the spread of malaria. At first, it was effective. However , over a period of years, people began to notice that it was becoming less and less effective. A possible explanation for this was that the insects were becoming resistant to the DDT. Explain how the resistance may have evolved.
DDT is an well known insecticide used in agriculture.
What is DDT?Researchers classify DDT as an endocrine-disrupting chemical, or an EDC, since there is evidence that it alters and disrupts hormones crucial for healthy health, including reproductive health, as well as neurological and immunological processes.
The insects that lacked these adaptations eventually went extinct, and when the adaptations grew more sophisticated and developed into a resistance, the DDT-rejecting mosquitoes obtained them.Given the situation, it would seem that mosquitoes have become resistant to DDT over time. This may be the result of natural selection-driven evolution within the mosquito population.DDT-resistant mosquitoes do better in the wild than non-resistant ones. Consequently, the resistance characteristic is handed along to next generations, creating a population of resistant individuals.To know more about DDT refer to:
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drag each image below into the figure in order to correctly represent the sequence of events regarding the transmission at a cholinergic synapse. step 3 has already been done for you.
The presynaptic membrane's cholinergic synapse knob depolarizes as a result of their action potential. Calcium ions then go into the synaptic knob. Exocytosis is then used to release acetylcholine from storage vesicles. The postsynaptic membrane contains receptors that acetylcholine binds to.
What are the three main components of a synapse?Three components make up the synapse: 1) the presynaptic membrane, which is made up of an axon's terminal button; 2) the postsynaptic membrane, which is made up of a segment of dendrite or cell body; and 3) the synaptic cleft, which is the gap between these two structures.
What five transmission steps are there?The five main ways that microorganisms spread include direct contact, fomites, aerosol (airborne), oral (ingestion), and vectorborne.
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which statement most likely explains why the boiled corn remains sweet? a. boiling destroys sugar molecules so they cannot be converted to starch b. boiling activates the enzyme that converts amino acids to sugar c. boiling kills a fungus on the corn that is needed to convert sugar to starch. d. boiling deactivates the enzyme responsible for converting sugar to starch
The boiling corn is still sweet. The enzyme that turns sugar into starch is inactive when something is boiled.
Which course of action would most likely speed up an enzyme-controlled reaction in an experiment?An enzyme-catalyzed reaction speeds up at low temperatures as the temperature rises. The protein is denatured and the rate of the reaction sharply drops at higher temperatures. An enzyme has a preferred pH range where it operates at its highest level.
After a chemical reaction, what happens to an enzyme?Enzymes help the process proceed more quickly or at a lower energy cost, and once the reaction is over, they become available once more. To put it another way, they are not consumed by the reaction and can be utilized again.
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turkey vultures eat carrion, which is decaying animal matter, like roadkill. how are they classified?(1 point) responses autotroph autotroph carnivore carnivore omnivore omnivore herbivore
Our ecosystems' health is significantly influenced by turkey vultures. They act as nature's cleanup crews by getting rid of decaying, corpses. Thus, option C is correct.
Vultures perform a crucial role in maintaining the balance of our ecosystems. Without them, carcasses would build up and rotting flesh would cause diseases to spread.
Which prevents the spread of certain diseases and makes the air smell much nicer overall.
Since their incredibly potent stomach acids destroy many of the poisonous substances found in dead animals, they ingest carrion quickly before it decomposes.
Given that they primarily eat dead animal corpses, vultures are excellent at cleaning out illnesses and toxins from the environment.
Therefore, Turkey vultures are carnivores which feed upon decaying animal matter.
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Full Question ;
Turkey vultures eat carrion, which is decaying animal matter, like roadkill. How are they classified?(1 point)
autotroph
herbivore
carnivore
omnivore
33. Organic molecules are those that contain at least carbon and oxygen carbon; oxygen; and hydrogen carbon and nitrogen carbon Question 34 (2 points) A nucleic acid is polymer made up of which kind of monomers? alternating sugar and phosphate groups nucleotides amino acids simple sugars
Organic molecules are those that contain at least one carbon and hydrogen atom. A nucleic acid is polymer that is made up of alternating sugar and phosphate groups.
Organic molecules are those molecules which contain carbon and hydrogen as the very basic building blocks of the molecule.
All though there is no restriction on the type of atom that can be present in an organic molecule. It can have sodium calcium potassium but it should must have at least one carbon and hydrogen in it.
A nucleic acid is a polymer that is made up of monomers.
These monomers are amino acids which are alternating simple sugars attached by phosphate groups.
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What is the source of the nitrogenous compounds in urine ?
The source of nitrogen compound in urine called urea.
What is nitrogen compound?The chemical elements and nitrogen is one of the most of the abundant elements in the universe and can form many of the compounds. It can be take several oxidation and it is states; but the most of the oxidation states are -3 and +3.
Most of the nitrogen in urine and is in the form of urea, which are the end product of amino acid oxidation. Other by the nitrogenous compounds in the urine include ammonia, creatinine, and uric acid, as the well as small quantities by the of peptides, amini acids, and other small molecules.
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the climate envelope model assumes that an organism’s realized niche approximates its fundamental niche.
a) True
b) Fals
The pH scale is a mathematical indicator of the Select one: A. concentration of H+ present in a solution. B. ability to dissolve in water. C. total amount of all ions in a solution. D. ability of a solution to buffer. E. concentration of OH- present in a solution. Question 8 Question text Which property of water causes sugar to dissolve in coffee? Select one: A. Water is a good solvent. B. Water is cohesive. C. Water is able to change states. D. Water is less dense than ice. E. Hydrogen bonds are broken between neighboring water molecules.
The pH scale is a mathematical indicator of the total amount of all ions in a solution. A collection of standard solutions with pH values that have been agreed upon internationally can be used to trace the pH scale.
The primary pH standard values are determined by measuring the potential difference between a hydrogen electrode and a standard electrode, such as the silver chloride electrode, using a concentration cell with transference. You can use a glass electrode, a pH meter, or a color-changing indicator to determine the pH of aqueous solutions. Numerous disciplines, including chemistry, agronomy, medicine, water treatment, and many more, depend on pH measurements.
A water molecule is created when two hydrogen atoms form a covalent bond with an oxygen atom. Within a covalent bond, atoms share electrons. Water is distributed in an unequal manner. The oxygen atom attracts electrons more forcefully than hydrogen does. Charges are now distributed differently in the water. Polar molecules have ends that are both partially positively and negatively charged. This polarity explains why water can separate the molecules of polar solutes and dissolve a wide range of substances.
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if the two genes independently assort, what is the probability, expressed as a percent, that the offspring will be homozygous for the tall height gene?
A plant with the genotype TtYy and a plant with the genotype Ttyy are crossed. The likelihood that the offspring will be homozygous for gene T is 0.25 if the two genes separately assort.
The genetic make-up of an organism is referred to as its genotype. The Phenotype of an individual characterises its look. An organism's genotype determines its phenotype. The genotype of an organism is said to be homozygous if it consists of two copies of the same allele. A genotype is said to as heterozygous if it contains two copies of a distinct allele in an organism.A homozygous recessive condition is characterised as a recessive characteristic when it manifests in one person. This means that if a person exhibits a recessive characteristic, they will undoubtedly have both recessive alleles for that trait since a dominant allele might mask a recessive trait.
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if you were worried about your cholesterol intake, which breakfast should you not eat?
Answer:-Starch and cellulose are two types of polysaccharides that are found in plants. However, they have different structures and functions. Starch is primarily used for energy storage, whereas cellulose is used for structure and support What is cellulose? Cellulose is made up of a series of sugar molecules linked together in a long chain. Since it is a fiber that makes up plant cell walls, it's found in all plant foods. The main sources of cellulose for industrial processes are wood and cotton [22]. Cellulose is the main component of paper, cardboard, and textiles made of cotton, flax, or other plant fibers. It is also used for the production of fibers, films, and cellulose derivatives. The cellulose fibers obtained from rice and oat husks had a high purity, due to the high cellulose content (above 93%) and low hemicellulose, lignin and ash contents, with a similar chemical composition as commercial cellulose
The primary immune response involves:
The primary immune response involves:
A slow rise in the concentration of antibodies, followed by a gradual decline.Organism has with a particular antigen which will result in the production of effector T and B cells which are activated cells that defend against the pathogenWhat are 3 examples of primary immune response?When an antigen comes into touch with the immune system for the first time, the primary immune response takes place. The immune system must learn to identify antigen, how to build an antibody against it, and finally produce memory cells throughout this period.
Primary immune responses in vitro require antigen to be particularly immunogenic. Examples of primary immune response are:
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Destroys harmful substances or worn-out cell parts
It destroys harmful substances or worn-out cell parts is a cell organelle lysosome. it is present in the eukaryotic cell and helps the cell protect itself from the virus or other harmful molecules.
What is the function of the lysosomes in the cell?The lysosome that is present in the cell has maintained an acidic environment because of the active transport of hydrogen from the cytoplasm to the lysosome. Due to its acidic nature, it can degrade the harmful pathogens in the cells and also degrade worn out cells, such as old mitochondria, and in this way, the lysosome protects the cell.
Hence, lysosomes destroy harmful substances or worn-out cell parts.
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which of the following is true of opportunistic pathogens? choose one: a. they may arise from normal microbiota. b. they only infect unvaccinated people. c. they usually infect people with normal, functioning immune systems. d. they are always untreatable, being antibiotic resistant.
Opportunistic pathogens are common bacteria with the potential to spread disease, they are always untreatable, being antibiotic resistant.
An organism that infects its host with disease is referred to as a pathogen, and the severity of the disease symptoms is referred to as virulence. Pathogens include viruses, bacteria, unicellular and multicellular eukaryotes, as well as other taxonomically diverse organisms. Pathogens, such as bacteria that are targeted by specialist viruses known as phages, impact every living thing. There are a staggering amount of bacteria and viruses on the planet, and they live in almost every environment. A litre of surface seawater normally has 100 billion viruses and more than ten billion bacteria. The estimated number of viruses on Earth is 1031, or nearly ten billion times the number of bacteria.
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what is the term for plasmids used for in vitro cloning of foreign dna fragments? group of answer choices
Answer:
Vectors
Explanation:
Plasmids can be used as tools to transfer, clone and manipulate genes. Those plasmids that are used experimentally for such purposes are called vectors. Into plasmid vectors, DNA fragments or genes can be inserted to create a “recombinant plasmid”.
Which of the following is not a protein in blood plasma? A. fibrinogen, B. sodium, C. albumin, D. globulin.
B. Sodium is not a protein in blood plasma.
Blood Plasma:
Plasma is separated from blood by spinning a tube of fresh blood containing anticoagulant in a centrifuge until the blood cells fall to the bottom of the tube. The plasma is then poured out or aspirated. For point-of-care testing applications, plasma can be extracted from whole blood by filtration or agglutination to allow rapid testing for specific biomarkers. Plasma has a density of approximately 1,025 kg/m3 (1.025 g/mL). Serum is blood plasma that does not contain clotting factors. Plasmapheresis is a medical therapy that involves the collection, treatment, and reuptake of plasma.
Sodium:Sodium is a chemical element with symbol Na (from Latin sodium) and atomic number 11. It is a soft, silvery-white, highly reactive metal. Sodium is an alkali metal and belongs to group 1 of the periodic table. Its only stable isotope is 23Na. Free metals do not exist in nature and must be made from compounds. Sodium is the sixth most abundant element in the earth's crust and is found in numerous minerals such as feldspar, sodalite, and halite (NaCl). Many sodium salts are highly water soluble: over time sodium ions have been leached from the earth's minerals by the action of water.
Proteins in human blood plasma include albumin, globulin, and fibrinogen. Albumin helps to regulate osmotic pressure, globulin helps with immune responses, and fibrinogen helps with blood clotting.
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The innermost layer of the kidney is called the _____.
The innermost layer of the kidney is called the Renal cortex.
The renal cortex is the innermost layer of the kidney and is known for its importance in the filtration and excretion of toxins from the body. It is composed of many tubules and nephrons, which are responsible for the production of urine. The renal cortex also plays a role in regulating the electrolyte balance, hormones and other metabolites in the body.
The renal cortex is made up of two layers: the outer cortex, which contains the glomeruli, the vessels that carry blood to the kidney, and the inner medulla, which contains the tubules and nephrons. The glomeruli filter waste from the blood and the tubules and nephrons absorb nutrients, electrolytes and other substances from the filtered blood. The tubules and nephrons also reabsorb water and other substances, such as glucose and sodium, which are then excreted as urine.
The renal cortex is highly vascularized and contains many capillaries, which allow for the rapid transport of substances between the kidney and the circulation. The renal cortex is also important in regulating the water balance of the body, as it is responsible for the reabsorption of water from the urine.
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Visual. SKILLS Identify the asymmetric carbon in this molecule:
Locate the carbon atoms first before attempting to find an asymmetrical carbon. Next, count the number of distinct substituent groups it contains. Asymmetrical carbon is one that has four distinct substituent groups.
What is an example of asymmetric carbon?Malic acid, for instance, comprises four carbon atoms, but only one of them is asymmetric. The carbon atom that is joined to two other carbon atoms, an oxygen atom, and a hydrogen atom is said to be asymmetric.
What type of carbon is asymmetric?A carbon atom is referred to as asymmetric/chiral if all four of its valency's are satisfied by four distinct groups. The 2 and 3 carbon atoms in the above chemical are asymmetric because they are bound to four distinct groups.
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