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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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Subject: Biology Exam Prep: Bank Exams

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Q:

Which of the following is responsible for transport of food and other substances in plants?

A) Xylem B) Phloem
C) Chloroplast D) None of these
 
Answer & Explanation Answer: B) Phloem

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Q:

During fermentation of sugar, the compound which is always formed is

A) Methyl Alcohol B) Ethyl Alcohol
C) Acetic Acid D) Ethylene
 
Answer & Explanation Answer: B) Ethyl Alcohol

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Q:

Which among the following does not have a cell wall?

A) Euglena B) Paramecium
C) Gonyaulax D) Mycoplasma
 
Answer & Explanation Answer: D) Mycoplasma

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Q:

In a majority of flowering plants, out of the four megaspores, what is the ratio of functional and degenerate megaspores?

A) 2:2 B) 1:3
C) 3:1 D) 4:0
 
Answer & Explanation Answer: B) 1:3

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1 1693
Q:

The body cavity which is lined by mesoderm is called __________.

A) Coelom B) Chordata
C) Arthropoda D) Platyhelminthes
 
Answer & Explanation Answer: A) Coelom

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Q:

Presence of large amounts of nutrients in waters also causes excessive growth of _________ algae.

A) Biomagnification B) Algal bloom
C) planktonic D) Eutrophication
 
Answer & Explanation Answer: C) planktonic

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1 1690
Q:

Xylem helps in transportation of which of the following?

A) Food B) Water
C) Nutrients D) Both food and water
 
Answer & Explanation Answer: B) Water

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