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BIO 101 Exam 2-UNL Questions And Answers With Verified Solutions 100% Correct Latest Updated 2024!!!
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BIO 101 Exam 2-UNL Questions And Answers With Verified Solutions 100% Correct Latest Updated 2024!!!

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  • October 30, 2024
  • 11
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers

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  • bio 101 exam 2 unl questions and answers with veri
  • list the steps by which ldl cholesterol particles
  • statins function to control high levels of ldl cho

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BIO 101 Exam 2-UNL Questions And
Answers With Verified Solutions 100%
Correct Latest Updated 2024!!!
True statements about the molecule cholesterol - ANSWER✔✔ -found in high
quantities in cheese
-both male and female sex hormones synthesized from it
-can be synthesized from saturated fatty acids in liver
-component of animal cell membrane
-classified as steroid lipid


Lipoproteins - ANSWER✔✔ particles which function to transport cholesterol in
the blood plasma


List the steps by which LDL cholesterol "particles" are taken into a cell by receptor
mediated endocytosis - ANSWER✔✔ 1) the protein "pegs" of the LDL cholesterol
particles bind to the complementary shaped protein receptor "pegs" on the cell
surface
2)the cell membrane engulfs the LDL cholesterol particle to form a vacuole around
the LDL particle. The vacuole containing the LDL particle is then taken into the
cell


True statements about LDL lipoproteins - ANSWER✔✔ -larger than HDL
lipoproteins
-carry cholesterol to the cells where it is taken in and utilized by the cells
-often build up in the blood as a result of too few LDL cell surface receptors,
especially on liver cells

, True statements about HDL lipoproteins - ANSWER✔✔ -produced in the liver and
small intestine
-smoking decreased the levels in blood
-eating fish oils increases concentration in the blood plasma
-pick up cholesterol from the blood and tissues and transports it to the liver where
it is removed as a component of bile in solid waste


Statins function to control high levels of LDL cholesterol in human blood by _ -
ANSWER✔✔ -stimulating the liver cells to make more LDL receptors
-inhibiting synthesis of LDL cholesterol from saturated fatty acids in the liver


What are plaques composed of? - ANSWER✔✔ they are deposits of cholesterol,
triglycerides and cell debris which build up on the walls of human blood vessels


Explain why plaques in coronary arteries can lead to a heart attack - ANSWER✔✔
If plaques build up on the walls of the coronary arteries they may decrease blood
flow to the heart tissue resulting in a decrease in oxygen and nutrients to the heart
cells which may leaf to heart cell death (heart attack)


Would doctor recommend food high in saturated fat, no cholesterol, but low in
unsaturated fat to woman suffering from atherosclerosis? - ANSWER✔✔
Although the food contains no cholesterol, it does contain large quantities of
saturated fatty acids which can be converted in LDL cholesterol in the liver.
Therefore, the this would not be recommended in the diet of someone suffering
from atherosclerosis.


Define the medical condition called atherosclerosis - ANSWER✔✔ "disease
characterized by build up of plaques containing LDL cholesterol, triglycerides, and
cell debris in walls of the arteries which leads to reduced blood flow to tissues"

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