AAMC FL Bio/Biochem || All Answers Are Correct 100%.
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AAMC FL Bio/Biochem
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AAMC FL Bio/Biochem
Can tumor cells be inherited? correct answers No, they are somatic. Cancer cells cannot be inherited
When concentrated urine is being produced, in which of the following regions of the kidney will the glomerular filtrate reach its highest concentration?
A.
Proximal convoluted tubule
B.
Dista...
AAMC FL Bio/Biochem || All Answers Are Correct 100%.
Can tumor cells be inherited? correct answers No, they are somatic. Cancer cells cannot be
inherited
When concentrated urine is being produced, in which of the following regions of the kidney will
the glomerular filtrate reach its highest concentration?
A.
Proximal convoluted tubule
B.
Distal convoluted tubule
C.
Cortical portion of the collecting duct
D.
Medullary portion of the collecting duct correct answers D. The collecting duct is the final
structure in which water reabsorption occurs, which concentrates filtrate. The medullary portion
of the collecting duct is the last portion of the tubules where reabsorption can occur. In the
portion of the tubule that follows, there will be no more reabsorption. Thus, the medullary
portion of the collecting duct contains the most concentrated glomerular filtrate that will
correspond to the urine.
What are oligosaccharides composed of correct answers Carbohydrates
The initial filtration step in the glomerulus of the mammalian kidney occurs primarily by:
A.
passive flow due to a pressure difference.
B.
passive flow resulting from a countercurrent exchange system.
C.
active transport of water, followed by movement of electrolytes along a resulting concentration
gradient.
D.
active transport of electrolytes, followed by passive flow of water along the resulting osmolarity
gradient. correct answers A. There are three pressures that work together to regulate filtration in
the glomerulus: glomerular capillary pressure, capsular hydrostatic pressure, and blood colloid
osmotic pressure. The glomerular capillary pressure will force filtrate from a capillary into
Bowman's capsule; the other two forces promote movement of the filtrate in the opposite
direction.
Ethanol may be metabolized to acetic acid, then condensed with a coenzyme to form acetyl
coenzyme A. Acetyl coenzyme A may then participate in:
A.
the Krebs (citric acid) cycle.
B.
, glycolysis.
C.
electron transport.
D.
oxidative phosphorylation. correct answers A. Acetyl coA enters krebs cycle
Which of the following best describes the bond that would form between the following two
nucleotides if they were located adjacent to each other as shown in a single strand of DNA?
A.
A bond between the phosphate of the thymine and the phosphate of the adenine
B.
A bond between an oxygen in the thymine base and a nitrogen in the adenine base
C.
A bond between the phosphate of the thymine and the sugar of the adenine
D.
A bond between the phosphate of the adenine and the sugar of the thymine correct answers D.
Nucleotides are linked to one another by phosphodiester bonds between the sugar base of one
nucleotide (thymine) and the phosphate group of the adjacent nucleotide (adenine) in a way that
the 5′ end bears a phosphate, and the 3′ end a hydroxyl group.
During the production of insulin, the translated polypeptide is cleaved into the mature form and
secreted from the cell. The cleavage most likely takes place in which of the following locations?
A.
Nucleus
B.
Ribosomes
C.
Endomembrane system
D.
Cytoplasm correct answers C. The endomembrane system is the portion of the cells that is in
charge of modifying proteins that will be secreted. Thus, it is most likely that insulin cleavage
will occur in the endomembrane system.
Based on the passage, which of the following is LEAST likely to be a symptom of diabetes
mellitus?
A. Loss of appetite
B. Sweet-tasting urine
C. Unexplained weight loss
D. Feelings of fatigue correct answers A. Based on the passage, diabetes affected individuals will
use proteins and lipids as a source of glucose, thus increasing, rather than decreasing, their
appetite.
Assume that K and M are two unlinked genes that affect hearing. The dominant K allele is
necessary for hearing, and the dominant M allele causes deafness regardless of the other genes
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