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Q:

Which one of the following functions is not carried out by smooth endoplasmic reticulum?

A) Transport of materials B) Synthesis of lipid
C) Synthesis of protein D) Synthesis of steroid hormone

Answer:   C) Synthesis of protein



Explanation:

Smooth Endoplasmic Reticulumdoes not contain ribosomes on its surface for which it is regarded as smooth. So, proteins cannotbe synthesised by SER provided protein synthesis is the primary task of ribosomes.

Subject: Biology
Exam Prep: Bank Exams
Q:

The hormone that helps plants respond to drought is

A) abscisic acid B) cytokinin
C) gibberellin D) ethylene  
 
Answer & Explanation Answer: A) abscisic acid

Explanation:

During drought, plants would be in scarcity for water. For ensuring the mineral loss of water through stomata, the plant starts to produce abscisic acid.

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0 22
Q:

Which among the following have a perfect pair of sex chromosomes?

A) Only men B) Only women
C) Both men and women D) Neither men nor women
 
Answer & Explanation Answer: B) Only women

Explanation:
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4 91
Q:

The alimentary canal is a long tube that extends from ______.

A) mouth to stomach B) stomach to large intestine
C) small intestine to anus D) mouth to anus
 
Answer & Explanation Answer: D) mouth to anus

Explanation:
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3 66
Q:

What are the organs similar in basic structure/shape, modified to perform different functions called?

A) Analogous organs B) Homologous organs
C) Heterogeneous organs D) Homogenous organs
 
Answer & Explanation Answer: B) Homologous organs

Explanation:
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1 61
Q:

The exit of food from the stomach is regulated by a ______ muscle.

A) cardiac B) sphincter
C) skeletal D) No option is correct
 
Answer & Explanation Answer: B) sphincter

Explanation:
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1 84
Q:

What produces the striations of a skeletal muscle cell?

Answer

The striations are a result of the A bands of sarcomeres appearing as relatively wide, dark stripes under the microscope, which alternate with narrower, lighter colored stripes formed by the I bands. 


The striations of skeletal muscle are created by the organization of actin and myosin filaments resulting in the banding pattern of myofibrils.

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1 72
Q:

Which among the following is respiratory pigment in human beings?

A) Melanin B) Haemoglobin
C) Rhodopsin D) Bilirubin
 
Answer & Explanation Answer: B) Haemoglobin

Explanation:
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1 118
Q:

In Paramecium, the food is moved to a specific spot by the movement of ______ which cover the entire surface of the cell.

A) cilia B) villi
C) pseudopodia D) vacuole
 
Answer & Explanation Answer: A) cilia

Explanation:
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