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 Biology Questions

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Q:

Nereis, Pheretima (Earthworm) and Hirudinaria (blood sucking leech) are examples of which Phylum?

A) Coelenterata B) Aschelminthes
C) Annelida D) Arthropoda
 
Answer & Explanation Answer: C) Annelida

Explanation:
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Q:

Steroid hormones exert their action by

A) entering the cell and activating mitichondrial DNA B) binding cell receptors
C) activating hypothalmic release of regulating hormones D) entering the nucleus of a cell and initiating or altering the expression of a gene
 
Answer & Explanation Answer: D) entering the nucleus of a cell and initiating or altering the expression of a gene

Explanation:

Steroid hormones exert their action by entering the nucleus of a cell and initiating or altering the expression of a gene.

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Q:

Where the mature sperm are produced?

A) Scrotum B) Vas deferens
C) Prostate gland D) Testes
 
Answer & Explanation Answer: D) Testes

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Q:

The secretion from the prostate gland enters into the:

A) Kidney B) Ureter
C) Urethra D) Testis
 
Answer & Explanation Answer: C) Urethra

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Q:

Opposite the micropylar end, is the __________, representing the basal part of the ovule.

A) hilum B) funicle
C) chalaza D) nucellus
 
Answer & Explanation Answer: C) chalaza

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Q:

Which is the longest bone in the human body?

A) Fibula B) Radius
C) Stapes D) Femur
 
Answer & Explanation Answer: D) Femur

Explanation:
The femur is also the longest bone in the human body. By most measures the femur is the strongest bone in the body.
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Q:

A Phospholipid is a

Answer

A Phospholipid is a lipid molecule which has hydrophilic head and a hydrophobic tailand and is a main component in making of all cell membranes in which they two form a parallel layers called Phospholipid bilayer.

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Q:

Which is the only one example of Mollusca Phylum?

A) Locust B) Butterfly
C) Scorpion D) Octopus
 
Answer & Explanation Answer: D) Octopus

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