Biology Questions

Q:

Which helps prevent errors in DNA replication?

A) Complementary base pairing reduce errors B) DNA ligase checks the DNA for errors
C) DNA is located in the ribosomes D) Any base can pair with any other base
 
Answer & Explanation Answer: A) Complementary base pairing reduce errors

Explanation:

DNA replication is the biological process of producing two identical replicas of DNA from one original DNA molecule. DNA replication occurs in all living organisms acting as the basis for biological inheritance. Complementary base pairing helps prevent errors in DNA replication.

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Q:

Reuptake refers to the

A) reabsorption of excess neurotransmitter molecules by a sending neuron B) release of hormones into the bloodstream
C) movement of neurotransmitter molecules across a synaptic gap D) inflow of myelin through an axon membrane
 
Answer & Explanation Answer: A) reabsorption of excess neurotransmitter molecules by a sending neuron

Explanation:

Reuptake refers to the process in the brain of neurons to retrieve chemicals that were not received by the next neuron. Neurons are cells in the brain that have miniscule spaces between them. They communicate with each other by sending chemicals across the space to the next neuron.

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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:

The outer membrane that covers the lungs

A) Dura mater B) pleura
C) Pia mater D) Myelin sheath
 
Answer & Explanation Answer: B) pleura

Explanation:

The pleura is the membrane that covers the lungs, according to InnerBody. The pleura consists of two layers, with the parietal pleura forming the membrane's outer layer and the visceral pleura forming the membrane's inner layer.

 

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Q:

How many Nephrons are in each kidney?

A) 10,000 B) 1,00,000
C) 1,000,000 D) 1000
 
Answer & Explanation Answer: C) 1,000,000

Explanation:

There are about 1,000,000 nephrons in each human kidney.

Nephron, functional unit of the kidney, the structure that actually produces urine in the process of removing waste and excess substances from the blood.

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Q:

Which feature do Prokaryotic and Eukaryotic cells share

A) Nucleus B) DNA
C) Nuclear membrane D) Membrane bound Organelles
 
Answer & Explanation Answer: B) DNA

Explanation:

Prokaryotic and Eukaryotic cells do share a feature of DNA.

Both prokaryotic and eukaryotic cells have structures in common.

All cells have a plasma membrane, ribosomes, cytoplasm, and DNA.

Prokaryotic cells are primitive cells which have no true nucleus and membrane bound organelles, while Eukaryotic cells are cells that have true nucleus, membrane bound organelles and well defined structures and layouts.

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Q:

The normal blood pressure in human beings is

A) 80/120 B) 120/80
C) 80/110 D) 110/90
 
Answer & Explanation Answer: B) 120/80

Explanation:
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Q:

Select the correct statement about the pharynx.

A) The auditory tube drains into the nasopharynx B) The laryngopharynx blends posteriorly into the nasopharynx
C) The palatine tonsils are embedded in the lateral walls of the nasopharynx D) The pharyngeal tonsil is located in the laryngopharynx
 
Answer & Explanation Answer: A) The auditory tube drains into the nasopharynx

Explanation:
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