Biology Questions

Q:

What is the outcome when a cell undergoes meiosis?

A) Two haploid cells B) Four haploid cells
C) Two diploid cells D) Four diploid cells
 
Answer & Explanation Answer: B) Four haploid cells

Explanation:

When a cell undergoes meiosis process, it produces 4 haploid cells as a result.

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Q:

Study of Life in outer space is known as

A) Endobiology B) Neobiology
C) Exobiology D) Intrabiology
 
Answer & Explanation Answer: C) Exobiology

Explanation:

Study of Life in outer space or search of life external to Earth is known as Exobiology.

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Q:

Which is not a function of the cytoskeleton?

A) helps the cell move B) gives cell a shape
C) prevents chromosomes from separating D) None of the above
 
Answer & Explanation Answer: C) prevents chromosomes from separating

Explanation:

A cytoskeleton acts as a frame that gives a cell its shape, protects it to an extent, and helps with cellular motion.

 

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Q:

During the process of protein synthesis, each trna carries one

A) amino acid B) nucleotide
C) fatty acid D) nucleic acis
 
Answer & Explanation Answer: A) amino acid

Explanation:

During protein synthesis process, each tRNA carries one aminoacid for protein synthesis to the ribosomes.

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Q:

Which of these is an example of a haploid cells?

A) Sperms B) Neurons
C) Red blood cells D) All of the above
 
Answer & Explanation Answer: A) Sperms

Explanation:

In the above options, sperms are the haploid cells. In humans, haploid cells are those have only half the number of usual number of chromosomes. Sperm, gamates and egg cells are the haploid cells examples.

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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, poorly controlled stress and anger can lead to heart attacks and strokes.

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Q:

The C shape of the tracheal cartilages is important because

A) divide the nasal cavity B) Allows for expansion or contraction of the trachea
C) provide a surface for the sense of smell D) All of the above
 
Answer & Explanation Answer: B) Allows for expansion or contraction of the trachea

Explanation:

Allows for expansion or contraction of the trachea. Hence, so large masses of food can pass through the esophagus during swallowing.

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Q:

At which stage in its life cycle does the silkworm yield the fiber of commercial use

A) Larva B) Egg
C) Pupa D) Imago
 
Answer & Explanation Answer: C) Pupa

Explanation:
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