Biology Questions

Q:

For the oxidation, carbohydrates should be in the form of

A) Starch B) Cellulose
C) Glucose D) Fats
 
Answer & Explanation Answer: C) Glucose

Explanation:
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Q:

All of the following are true of neurons except that

A) they conduct a nervous impulse B) they are a very specialized form of connective tissue
C) thay are separated from one another by synapses D) When mature, they lose ability to divide
 
Answer & Explanation Answer: B) they are a very specialized form of connective tissue

Explanation:

All of the following are true of neurons except that they are a very specialized form of connective tissue.

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Q:

Both food and air travel through the

A) pharynx B) trachea
C) larynx D) alveolus
 
Answer & Explanation Answer: A) pharynx

Explanation:

The pharynx is a passageway shared by both food and air.

 

Both_food_and_air_travel_through_the1562568925.png image

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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. 

 

 localized_area_of_pus_formation_in_the_lungs1537941339.jpg image

 

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

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Q:

The NADPH required for the calvin cycle comes from

A) Reactions initiated in photosystem 1 B) Citric acid cycle
C) Reactions initiated in photosystem 2 D) Glycolysis
 
Answer & Explanation Answer: C) Reactions initiated in photosystem 2

Explanation:

ATP and NADPH produced by the light reactions are used in the Calvin cycle to reduce carbon dioxide to sugar. The Calvin cycle is similar to the Krebs cycle in that the starting material is regenerated by the end of the cycle.

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Q:

Membrane bound organelles are not found in the cells of

A) Eukaryotes B) Prokaryotes
C) Both A & B D) Nokaryotes
 
Answer & Explanation Answer: B) Prokaryotes

Explanation:

Membrane bound organelles are not found in the cells of Prokaryotes whereas Eukaryotes have nucleus and membrane bound organelles.

 

For example : Bacteria is prokaryotic organism with lack of nucleus and membrane bound organelles whereas fungi is a eukaryotic with nucleus and membrane bound organelles.

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Q:

Goitre is due to the deficiency of

A) Calcium B) Zinc
C) Selenium D) Iodine
 
Answer & Explanation Answer: D) Iodine

Explanation:
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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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