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Q:

AIDS is caused by the organisms which are

A) bacteria B) fungi
C) viruses (HTLV III) D) ProtoZoa

Answer:   C) viruses (HTLV III)



Explanation:

AIDS: The term means Acquired Immunity Deficiency Synodrome. The virus attacks the T cells of the (white corpuscle type) blood and destroys them.

Subject: Biology
Q:

Which is not a function of the cytoskeleton?

A) helps the cell move B) gives cell a shape
C) prevents chromosomes from separating D) None of the above
 
Answer & Explanation Answer: C) prevents chromosomes from separating

Explanation:

A cytoskeleton acts as a frame that gives a cell its shape, protects it to an extent, and helps with cellular motion.

 

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Q:

The inherited traits of an organism are controlled by

A) DNA B) Enzymes
C) Nucleotides D) RNA
 
Answer & Explanation Answer: A) DNA

Explanation:

The inherited traits of an organism are controlled by DNA molecules.

 

The traits an organism displays are ultimately determined by the genes it inherited from its parents, in other words by its genotype. Animals have two copies of all their chromosomes, one from each parent.

 

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1 12
Q:

The process of bones increasing in width is known as

A) appositional growth B) closing of the epiphyseal plate
C) concentric growth D) long bones reaching adult length and width
 
Answer & Explanation Answer: A) appositional growth

Explanation:
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3 26
Q:

Which letter indicates systolic pressure?

A) i B) b
C) c D) a
 
Answer & Explanation Answer: D) a

Explanation:

a -  at the peak of changes in blood pressure indicates the systiolic pressure.

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3 22
Q:

Localized area of pus formation in the lungs is

A) Pulmonary embolism B) Pulmonary abscess
C) Pleurisy D) Pulmonary edema
 
Answer & Explanation Answer: B) Pulmonary abscess

Explanation:

Pulmonary abscess is a type of liquefactive necrosis of the lung tissue. 

 

Hence, Localized area of pus formation in the lungs is Pulmonary abscess.

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2 20
Q:

Which of the following are involved directly in pulmonary circulation?

A) left ventricle, aorta, and inferior vena cava B) right atrium, aorta, and left ventricle
C) superior vena cava, right atrium, and left ventricle D) right ventricle, pulmonary artery, and left atrium
 
Answer & Explanation Answer: D) right ventricle, pulmonary artery, and left atrium

Explanation:

Right ventricle (which pumps blood to the lungs), pulmonary artery (which carries blood to the lungs), and left atrium (which receives blood from the lungs) are involved directly in pulmonary circulation.

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2 16
Q:

Hormones are chemicals secreted and regulated by the endocrine system.

A) TRUE B) FALSE
Answer & Explanation Answer: A) TRUE

Explanation:

True. Hormones are chemicals secreted and regulated by the endocrine system.

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2 74
Q:

Which would provide the body with the most energy?

A) Breaking a single carbon bond B) Forming bonds between two amino acids
C) Creating bonds to form a carbohydrate D) Breaking the bonds in a monosaccharide
 
Answer & Explanation Answer: D) Breaking the bonds in a monosaccharide

Explanation:
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