Biology Questions

Q:

Which shows a correctly paired DNA molecule?

A) AT B) TC
C) AC D) TG
 
Answer & Explanation Answer: A) AT

Explanation:

The nucleotides that are present in DNA molecule are 4. They are Thymine (T), Guanine (G), Adenine (A) and Cytosine (C).

 

Here in this Adenine pairs with Thymine (A - T) and Cytosine pairs with Guanine (C - G).

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Q:

The primary goal of conservation biology is to

A) counter the loss of biodiversity B) estimate the total number of species that exist
C) integrate human culture back into nature D) catalogue species
 
Answer & Explanation Answer: A) counter the loss of biodiversity

Explanation:
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Q:

Which phrase best describes rough ER?

A) studded with ribosomes B) fewer solutes than the cell
C) stored in the central vacuole D) protected by vesicles
 
Answer & Explanation Answer: A) studded with ribosomes

Explanation:
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Q:

Oxygen crosses a plasma membrane by

A) Osmosis B) Evaporation
C) Concatenation D) Diffusion
 
Answer & Explanation Answer: A) Osmosis

Explanation:

Oxygen crosses a plasma membrane by Osmosis.

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Q:

What distinguishes Atherosclerosis from Arteriosclerosis?

Answer

The condition of blockage of the artery due to plaque deposition in the walls which can lead to stroke or heart attack is called Atherosclerosis.


Whereas,


The condition in which the stiffening or hardening of the arteries is called as Arteriosclerosis.

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Q:

What compound directly provides energy for cellular work?

A) ATP B) ADP
C) NADP D) NADH
 
Answer & Explanation Answer: A) ATP

Explanation:

ATP - Adinosine Triphosphate is the compound that directly provides energy for cellular work.

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Q:

Lobar Pneumonia refers to a lung infection in which it affects

A) large part of the lobe or lung B) small segment of the lung
C) both lungs D) None of the above
 
Answer & Explanation Answer: A) large part of the lobe or lung

Explanation:

Pneumonia is a lung infection which is usually caused by a bacteria or virus or fungi in one segment or the whole lung or both lungs. Lobar Pneumonia refers to a lung infection in which it affects the large segment of the lung or lobe.

Lobar_Pneumonia_refers_to_a_lung_infection_in_which_it_affects1552046755.png image

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Q:

A genus can best be defined as

A) a taxon composed of one or more species and a classification level lying below family B) a taxon composed of families
C) the most specific taxon D) a taxon comprised of classes
 
Answer & Explanation Answer: A) a taxon composed of one or more species and a classification level lying below family

Explanation:

A genus can best be defined as a taxon composed of one or more species and a classification level lying below family.

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