Triglycerides are composed of:

monosaccharides

a glycerol plus three glycogen chains

a glycerol plus three amino acid chains

a glycerol plus three fatty acid chains

Answer and Explanation

The Correct Answer is D

A. monosaccharides: Monosaccharides are the building blocks of carbohydrates, not lipids.
B. a glycerol plus three glycogen chains: Glycogen is a polysaccharide, not a component of triglycerides.
C. a glycerol plus three amino acid chains: Amino acids form proteins, not triglycerides.
D. a glycerol plus three fatty acid chains: A triglyceride is made of one glycerol molecule and three fatty acids-this is the primary structure of fats.

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Correct Answer is D

Explanation

A. triglycerides: Triglycerides are stored in fat cells, not a major component of membranes.
B. eicosanoids: These are signaling molecules, not structural components of the plasma membrane.
C. steroids: While cholesterol (a steroid) is present in membranes, it's not the most abundant.
D. phospholipids: The plasma membrane is primarily made of a phospholipid bilayer, forming the main structural framework.

A. from Side A to side B B. from Side B to side A C. there will be no movement of water D. water will move from B to A and A to B at equilibrium

Correct Answer is A

Explanation

A. from Side A to Side B: Osmosis is the movement of water from a region of lower solute concentration (10%) to one of higher solute concentration (20%) to equalize the concentration.
B. from Side B to Side A: This would occur only if Side A had a higher solute concentration, which it doesn't.
C. there will be no movement of water: There’s a concentration gradient, so water will move.
D. water will move from B to A and A to B at equilibrium: Equilibrium implies equal concentrations, which is not the case initially.

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Triglycerides are composed of:

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I am in the laboratory separating plasma membranes from the cytoplasm in cell cultures. Using my ultra high powered scanning electron microscope to look at the plasma membrane samples, which of the following would you expect to see in greatest abundance?

Correct Answer is D

Explanation

A flask has two sides separated by a selectively permeable (semi-permeable) membrane. I place a 10% sucrose/water solution in side A and a 20% sucrose/water solution in side B. Please predict in which direction most of the water will move via osmosis.

Correct Answer is A

Explanation

Two women were arguing over a baby, each claiming that the child was theirs. They went before a wise king to settle the dispute. The king decided to divide the baby straight down the midline of the body, forming a right and left half. This cut is best described as:

When carbon and oxygen bond they do so by sharing electrons, but the electrons spend most of their time orbiting around oxygen. What type of bond forms between these two atoms?

Which of the following is consistent with homeostasis?

Channels that open due to a compound binding to receptor sites on the extracellular surface of the channels would be considered: non gated ion channels

Which of the following is NOT a property of water?

In the cold, thermoreceptors in your skin detect the temperature and inform your brain, which tells the skeletal muscles to contract, causing shivering. What is the effector?

During the law firm retreat, John shoots George directly in the middle of his abdomen. Which region did the bullet pass into?

You have isolated some DNA from liver cells. The base sequence of one strand of the DNA is TAGCCGA. The complementary sequence of bases on the complementary RNA must be: