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BIOL 252 EXAM 1 2024/2025 WITH 100% CORRECT ANSWERS
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BIOL 252 EXAM 1 2024/2025 WITH 100% CORRECT ANSWERS
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BIOL 252 EXAM 1 2024/2025 WITH 100%CORRECT ANSWERS
A short-term effect of growth hormone is:
A. Stimulation of glucose uptake
B. Protein synthesis
C. Production of insulin-like growth factor (IGF)
D. Fat Breakdown
D. Fat Breakdown
Kristi suffers from brittle bone disease (osteogeneis
imperfecta), which results in her bones breaking very easily.
Which component of Kristi’s extra cellular matrix is likely
abnormal?
A. Elastic fibers
B. Glycoaminoglycans
C. Glycoproteins
D. Collagen
D. Collagen
Main structural protein of extracellular matrix
Which of the following is NOT a component of the
extracellular matrix?
A. Desmosomes
B. Extracellular fluid
C. Glycoproteins
D. Collagen
A. Desmosomes
Cell junction!
Below is a picture of an intestinal epithelial cell. What is the
function of the microvilli on the apical side of the membrane?
A. Propel waste down the intestinal tract
, B. Absorb nutrients from the food we eat
C. Actively transport ions from the apical
to basolateral membranes
D. Prohibit pathogen infection from
intestinal lumen
B. Absorb nutrients from the food we eat
Which of the following is NOT true about homeostasis?
A. Homeostasis establishes a stable environment
B. Homeostasis is a static process
C. Homeostatic imbalances result in disease
D. Homeostasis is achieved through feedback loops
B. Homeostasis is a static process
After consuming a Pop-Tart (14g of sugar), your pancreas
secretes insulin to reduce blood glucose levels. This is an
example of which core principle of physiology?
A. Structure-function
B. Gradient
C. Positive feedback loop
D. Cell-cell communication
E. None of the above
E. None of the above
Negative feedback loop!
This component of a negative feedback loop senses when a
regulated variable is outside of its normal range:
A. Stimulus
B. Effector
C. Responder
D. Sensor
D. Sensor
Which of the following best describes an autocrine cellular
communication pathway?
A. Insulin secreted in the pancreas acting on a cell in the liver
B. A nerve cell secreting acetylcholine, causing muscle cell
contraction
C. Two epithelial cells interacting via gap junctions to transport
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