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:

Major fructose sources include

A) Fruit juices B) Corn syrup
C) Honey D) All of the above
 
Answer & Explanation Answer: D) All of the above

Explanation:

Major fructose sources include all fruits and honey.

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7 8021
Q:

The schwann cell forms a myelin sheath around the

A) nodes of Ranvier B) dendrites
C) nucleus D) axon
 
Answer & Explanation Answer: D) axon

Explanation:

Schwann cells or neurolemmocytes are the cells in the peripheral nervous system that form the myelin sheath around a neuron's axon.

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1 4328
Q:

Benign prostatic hyperplasia is characterized by

A) Not functioning of prostate gland B) Enlargement of prostate gland
C) Epididymis issue D) None of the above
 
Answer & Explanation Answer: B) Enlargement of prostate gland

Explanation:

Benign prostatic hyperplasia (BPH) also called benign prostatic hypertrophy (or) prostate gland enlargement is a noncancerous enlargement of the prostate gland that can lead to lower urinary tract symptoms (LUTS).

 

It is the diagnosis characterized by proliferation of the cellular elements of the prostate.

benign_prostatic_hyperplasia_is_characterized_by1533702972.jpg image

 

Symptoms ::


As the prostate gets larger, it starts to pinch the urethra. This causes symptoms that affect your urine flow, such as:

 

* Dribbling when you finish

* A hard time getting started

* A weak stream, or you pee in stops and starts.

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3 1618
Q:

What base is found on RNA but not on DNA?

A) Uracil B) Thymine
C) Adenine D) None of the above
 
Answer & Explanation Answer: A) Uracil

Explanation:

Uracil is present in RNA and binds to adenine whereas thymine is present in DNA and binds to adenine.

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5 1447
Q:

Outward extension of the shoulder bone is the

A) acromion B) foramen
C) cancellous bone D) All of the above
 
Answer & Explanation Answer: A) acromion

Explanation:

Outward extension of the shoulder bone is called as the acromion.

acromion1533537961.jpg image

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3 3361
Q:

Select the correct statement contrasting gametophytes and sporophytes.

A) Sporophytes are diploid, whereas gametophytes are haploid. B) Sporophytes are vascular, whereas gametophytes are nonvascular.
C) Sporophytes are larger than gametophytes. D) All of the above
 
Answer & Explanation Answer: A) Sporophytes are diploid, whereas gametophytes are haploid.

Explanation:

Sexual reproduction results in gametes that combine two cells from different individuals. Meiosis also produces gametes. Haploids contain one set of chromosomes in each of their cells. Diploids cells contain two chromosome sets. For plants, haploid and diploid cells divide via mitosis. The plants’ haploid phase is called the gametophyte, and the diploid phase is called the sporophyte.

 

Sporophytes are diploid plants that use meiosis to produce spores. These spores are haploid cells that grow into haploid gametophytes. Megaspores grow into female gametophytes, and microspores grow into male gametophytes.

 

Gametophytes are haploid plants that use mitosis to make haploid gametes. These gametes are female in the form of an ovum (egg) or male in the form of sperm.

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2 2281
Q:

How many amino acids are found in living organisms?

A) 1500 B) 3000
C) 20 D) 4
 
Answer & Explanation Answer: C) 20

Explanation:

Amino acids are a crucial, yet basic unit of protein, and they contain an amino group and a carboxylic group. They play an extensive role in gene expression processes.

 

Amino acids become proteins when 50 or more are bonded together in a chain. All the millions of different proteins in living things are formed by the bonding of only 20 amino acids.

 

Eight of these amino acids are essential and cannot be produced by the body.

They are:

• Leucine

• Isoleucine

• Lysine

• Threonine

• Methionine

• Phenylalanine

• Valine

• Tryptophan

•  Histidine is an amino acid that is categorized as semi-essential since the human body doesn't always need it to properly function

 

Nonessential amino acids are produced by the human body either from essential amino acids or from normal protein breakdowns. Nonessential amino acids include:

• Asparagine

• Alanine

• Arginine

• Aspartic acid

• Cysteine

• Glutamic acid

• Glutamine

• Proline

• Glycine

• Tyrosine

• Serine.

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Q:

Non-Gonococcal Urethritis is most often caused by

A) chlamydia B) gonorrhea
C) progesterone D) herpes genitalis
 
Answer & Explanation Answer: A) chlamydia

Explanation:

Chlamydial infection is very common in both males and females.

 

NGU (Non-Gonococcal Urethritis) is an infection of the urethra caused by pathogens (germs) other than gonorrhea.

 

Several types of germs cause NGU. The most common and serious is chlamydia.

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