Biology Questions

Q:

Where does meiosis take place in bryophytes?

A) Capsule B) Protonema
C) Antheridia D) None of the above
 
Answer & Explanation Answer: A) Capsule

Explanation:

Meiosis takes in the capsule of the Bryophytes.

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Q:

Which stage of cellular respiration produces the most ATP?

A) Glycolysis B) Kreb's cycle
C) Electron transport chain D) All the above
 
Answer & Explanation Answer: C) Electron transport chain

Explanation:

There are 3 stages in cellular respiration. They are:

1. Glycolysis

2. Kreb's cycle

3. Electron transport chain

 

Here, Glycolysis produces only 2 ATP whereas Kreb's cycle produces no ATP. Electron transport chain of the cellular respiration produces the maximum ATP.

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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:

Which of the following leads to the production of urea?

A) Synthesis of protein from amino acids B) Oxidation of glucose
C) Degradation of amino acids D) Incomplete oxidation of fatty acids
 
Answer & Explanation Answer: C) Degradation of amino acids

Explanation:

Urea is a by product of amino acid catabolism, Which occurs in the liver. The nitrogen in the  amino acid becomes converted to ammonia and this is further converted by the liver into urea

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Q:

The process of bones increasing in width is known as

A) appositional growth B) concentric growth
C) closing of the epiphyseal plate D) long bones reaching adult length and width
 
Answer & Explanation Answer: A) appositional growth

Explanation:
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Q:

Systems biology is mainly an attempt to

A) Understand the behavior of entire biological systems B) Speed up the technological application of scientific knowledge
C) Analyze genomes from different species. D) None of the above
 
Answer & Explanation Answer: A) Understand the behavior of entire biological systems

Explanation:

An approach to studying biology that aims to model the dynamic behavior of whole biological systems based on a study of the interactions among the system's parts.

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Q:

Menstruation is triggered by a drop in the levels of

A) progesterone B) relaxin
C) FSH D) LH
 
Answer & Explanation Answer: A) progesterone

Explanation:

The principal hormone secreted by the corpus luteum is progesterone. Menstruation is triggered by a drop in the levels of progesterone.

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Q:

Which chemical is not found in DNA nucleotides?

A) Thymine B) Uracil
C) Adenine D) All of the above
 
Answer & Explanation Answer: B) Uracil

Explanation:

A nucleotide is an organic molecule that is the building block of DNA and RNA. They also have functions related to cell signaling, metabolism, and enzyme reactions. A nucleotide is made up of three parts: a phosphate group, a 5-carbon sugar, and a nitrogenous base. The four nitrogenous bases in DNA are adenine, cytosine, guanine, and thymine. RNA contains uracil, instead of thymine. 

 

A nucleotide within a chain makes up the genetic material of all known living things.

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