2
Q:

Which are the special proteins in muscles that contract and relax to cause movement?

 

A) Contractile protein B) Receptor protein
C) Structural protein D) Enzymatic protein

Answer:   A) Contractile protein



Explanation:
Subject: Biology
Exam Prep: Bank Exams
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

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4 952
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

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Exam Prep: AIEEE , Bank Exams

4 1119
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

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1 653
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

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1 1200
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 1033
Q:

Which among the following is respiratory pigment in human beings?

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

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1 724
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

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7 1954
Q:

Thin filaments are composed of

A) Actin B) Tropomyosin
C) Troponin D) All of the above
 
Answer & Explanation Answer: D) All of the above

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3 714