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 Biology Questions

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Q:

Which of these is a human disease caused by bacteria?

A) TB B) Ascariasis
C) Chickenpox D) Common cold
 
Answer & Explanation Answer: A) TB

Explanation:

Bacteria which causes disease are called Pathogenic Bacteria. TB is caused by bacteria.

 

Some of the diseases caused by bacteria are::

1. Tuberculosis, TB (affects the lungs)

2. Salmonella (causes food poisoning)

3. Whooping cough (affects the lungs)

4. Septic Sore Throat

 

 

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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:

The terminal part of the carpel in a flower, which may be sticky is ______

A) Ovary B) Style
C) Stigma D) Anther
 
Answer & Explanation Answer: C) Stigma

Explanation:
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Q:

Which structure is specific to eukaryotic cells?

A) Nucleus B) DNA
C) Cytoplasm D) Cell membrane
 
Answer & Explanation Answer: A) Nucleus

Explanation:
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Q:

Enzymes are important because they

A) maintain cell shape B) transfer genetic information
C) contain water D) speeds up chemical reactions
 
Answer & Explanation Answer: D) speeds up chemical reactions

Explanation:

Enzymes in the body are those which play an important role of breaking down the larger molecules to small and speeds up the chemical reactions.

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Q:

Glaucoma is usually caused by

A) High pressure on the optic nerve B) Loss of hearing
C) Loss of Bone density D) None of the above
 
Answer & Explanation Answer: A) High pressure on the optic nerve

Explanation:

Glaucoma is usually caused by high pressure on the optic nerve which leads the loss of eye sight.

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Q:

A molecule of dna is a polymer composed of

A) Amines B) Nuceotides
C) Chromosomes D) Fattyacids
 
Answer & Explanation Answer: B) Nuceotides

Explanation:

A molecule of DNA is a polymer composed of nucleotides. Each nucleotide is composed of a nitrogenous base, a five-carbon sugar (deoxyribose), and a phosphate group.

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Q:

Which of the following is present in a prokaryotic cell?

A) chloroplast B) nucleoid
C) mitochondrion D) nuclear envelope
 
Answer & Explanation Answer: B) nucleoid

Explanation:
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