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 Biology Questions

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Q:

In which of the following kind of organisms is the phenomenon found where in the female kills the male after copulation __________

A) Drgonfly B) Honey bee
C) Spider D) Pit viper
 
Answer & Explanation Answer: C) Spider

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Q:

Man has...............pairs of salivary glands

A) 4 B) 6
C) 3 D) 8
 
Answer & Explanation Answer: C) 3

Explanation:

Salivary glands of man are 3 pairs = 6. They are one pair of parotid glands, one pair of submaxillary or submandibular glands and one pair of sublingual glands.

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9 3529
Q:

The meristem which occurs between mature tissues is known as _________meristem.

A) Intercalary B) Primary
C) Lateral D) Apical
 
Answer & Explanation Answer: A) Intercalary

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Q:

What is the functional unit of a skeletal muscle called?

A) Myofibril B) Sarcomere
C) Fiber D) Fasciculus
 
Answer & Explanation Answer: B) Sarcomere

Explanation:

The myofibrils are composed of actin and myosin filaments, repeated in units called sarcomeres, which are the basic functional units of the skeletal muscle.

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Q:

Transmission of stimuli from one part of body to other part takes place through __________

A) Muscular tissue B) Epithelium tissue
C) Connective tissue D) Nervous tissue
 
Answer & Explanation Answer: D) Nervous tissue

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Q:

Which of these does not contain a structural protein?

A) Tendons B) Ovalbumin
C) Muscles D) Ligaments
 
Answer & Explanation Answer: B) Ovalbumin

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Q:

When more than 20% of the body weight is due to fat, the person is suffering from

A) Marasmus B) Kwashiorkor
C) Scurvy D) Obesity
 
Answer & Explanation Answer: D) Obesity

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Q:

Amino acids can be distinguished from one another by

A) type of bond between the R group and the rest of the molecule B) the number of R groups found on the amino acid molecules
C) the chemical properties of their R groups D) the chemical properties of the amino and carboxyl groups
 
Answer & Explanation Answer: C) the chemical properties of their R groups

Explanation:

Amino acids are organic compounds containing amine (-NH2) and carboxyl (-COOH) functional groups, along with a side chain (R group) specific to each amino acid.

 

Depending on the nature of the side chain groups, three classes of aminoacids can e distinguished:

1. Amino acids with H ond donor and acceptor groups.

Histidine, lysine, aspartic acid, threonine,...

2. Amino acids with donor grups only.

Arginine, tryptophan and cysteine.

3. Amino acids with acceptor groups only.

Asparagine and glutamine.

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