Biology Questions

Q:

A sudden loss of memory is a symptom of

A) Alzheimer's B) Dementia
C) Amnesia D) None of the above
 
Answer & Explanation Answer: C) Amnesia

Explanation:

A sudden loss of memory is a symptom of Amnesia which is caused by an injury or damage to our brain. In that situation we cannot remember about ourself and our life.

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Q:

Humans cannot digest cellulose because they

Answer

Humans cannot digest cellulose because they are lacking with the enzymes responsible to breakdown the beta acetal linkages.

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Q:

Which of the following is not true of color blindness?

A) Color blind people learn to rely on shapes, patterns, and positions of signs and signals. B) Red-green color blindness is the most common type of color blindness.
C) A color blind person cannot see any colors. D) For some people, it might be difficult to recognize colors of traffic lights and signs.
 
Answer & Explanation Answer: C) A color blind person cannot see any colors.

Explanation:
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Q:

Which is not a function of the cell membrane?

A) helps substances pass from the cytoplasm into the nucleus B) keeps materials within the cell separated from the environment outside the cell
C) helps control the movement of materials into and out of the cell D) allows the cell to change shape under pressure
 
Answer & Explanation Answer: A) helps substances pass from the cytoplasm into the nucleus

Explanation:
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Q:

All of the following are polysaccharides except

A) Chitin B) Lactose
C) Glycogen D) Cellulose
 
Answer & Explanation Answer: B) Lactose

Explanation:
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Q:

Which of the following is true of osmosis?

A) it is a type of diffusion B) movement is against water's concentration gradient
C) requires energy D) All of the above
 
Answer & Explanation Answer: D) All of the above

Explanation:
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Q:

Meiosis ii is similar to mitosis in that

A) the daughter cells are diploid B) sister chromatids separate during anaphase
C) DNA replicates before the division D) All of the above
 
Answer & Explanation Answer: C) DNA replicates before the division

Explanation:
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Q:

In what chief capacity does vitamin k function?

A) raise plasma calcium B) blood clot
C) produce rhodopsin D) bone density
 
Answer & Explanation Answer: B) blood clot

Explanation:

The chief capacity of vitamin K is to help our blood clot so that we don't bleed too much.

Vitamin K is actually made up of two different types of vitamins, Vitamin K1 and Vitamin K2. They are both responsible for helping the blood to clot so that people do not bleed to death. Vitamin K1 can be consumed by eating leafy green vegetables, such as kale and spinach, as well as other vegetables, such as broccoli and collard greens. Meats, cheeses, and eggs can provide a great source of Vitamin K2.

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