Biology Questions

Q:

Cranial bones develop

A) within fibrous membranes B) within osseous membranes
C) from cartilage models D) from a tendon
 
Answer & Explanation Answer: A) within fibrous membranes

Explanation:
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Q:

The animals in which the body cavity is absent are known as __________.

A) Coelomates B) Wild
C) Pseudocoelomates D) Acoelomates
 
Answer & Explanation Answer: D) Acoelomates

Explanation:
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Q:

Which among the following hormone can be used as a drug to treat cardiac arrest and some other cardiac problems?

A) Epinephrine B) Insulin
C) Thyroxin D) Calcitonin
 
Answer & Explanation Answer: A) Epinephrine

Explanation:
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Q:

Cellulose is a major component of the

A) Pythium B) Pseudomonas
C) Xanthomonas D) Saccharomyces
 
Answer & Explanation Answer: A) Pythium

Explanation:
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Q:

Where does protein synthesis take place in a cell?

A) Ribosomes B) Mitochondria
C) Cytoplasm D) Nucleus
 
Answer & Explanation Answer: A) Ribosomes

Explanation:

The protein synthesis take place in a cell outside the nucleus in the structures called ribosomes. Ribosomes link amino acids together in the order specified by messenger RNA molecules.

Where_does_protein_synthesis_take_place_in_a_cell1563603813.png image

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Q:

Which of the following is true of enzymes?

A) Enzymes lowers the activation energy for the chemical reaction B) Enzymes speed up the rate of a chemical reaction
C) Both A & B D) Neither A nor B
 
Answer & Explanation Answer: C) Both A & B

Explanation:

Enzymes are macromolecular biological catalysts. Enzymes accelerate chemical reactions. The molecules upon which enzymes may act are called substrates and the enzyme converts the substrates into different molecules known as products.

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Q:

Stress is a factor that contributes to heart disease risk.

A) TRUE B) FALSE
Answer & Explanation Answer: A) TRUE

Explanation:

True, Stress is a factor that contributes to heart disease risk.


More factors that contributes to heart disease risk are blood pressure, cholesterol, smoking, physical inactivity and overeating.

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Q:

Goosebumps are caused by contractions of the

A) Muscles B) Nerves
C) Bones D) All of the above
 
Answer & Explanation Answer: A) Muscles

Explanation:

Goosebumps are caused by the contraction of the tiny muscles attached to hair follicles. These muscles are arrectores pilorum muscles.

 

Goosebumps_are_caused_by_contractions_of_the1560862968.png image

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