Biology Questions

Q:

Which part of the respiratory system does emphysema damage?

A) Nose B) Lungs
C) Trachea D) Mouth
 
Answer & Explanation Answer: B) Lungs

Explanation:

Emphysema is a condition that involves damage to the walls of the air sacs (alveoli) of the lung i.e, primarily causes shortness of breath due to over-inflation of the alveoli.

 

First, emphysema causes holes to gradually form inside the lungs' air sacs, thereby weakening their internal structure and inhibiting the exchange of oxygen and carbon dioxide.

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Q:

Where does glycolysis take place?

A) Mitichondria B) Cytoplasm
C) Mitochondrial outer membrane D) None of above
 
Answer & Explanation Answer: B) Cytoplasm

Explanation:

"Glycolysis" means the splitting of glucose. The first step of the process occurs in the cytoplasm of the cell and yields a small amount of energy (measured in units of ATP) and two molecules of pyruvate.

The other steps occur in the mitochondria. It is an ongoing process as your cells have a constant need for energy.

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Q:

Phosphorescence is a phenomenon associated with which algal division?

A) Dinoflagellates B) Brown algae
C) Red algae D) Euglenophytes
 
Answer & Explanation Answer: D) Euglenophytes

Explanation:

Phosphorescence is a phenomenon associated with an algal division called euglenophytes. 

 

Phosphorescence is a phenomenon when an object is capable of releasing photons of light at a longer wavelength in response to absorbing light of a shorter wavelength. The object releasing the light only releases the light after some time has passed since it absorbed the light of a short wavelength.

 

Euglenophytes are single-celled plant-like protists that have no cell wall.

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Q:

Which process occurs inside the chloroplasts?

A) Photosynthesis B) Glycolysis
C) Oxidation D) None of the above
 
Answer & Explanation Answer: A) Photosynthesis

Explanation:

The process that occurs inside the chloroplasts is photosynthesis. The light from the sun is obserbed and combining with water and CO2, plants prepare food for the plants.

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Q:

The term facultative anaerobe refers to an organism that

A) Uses oxygen or grows without oxygen. B) Requires less oxygen than is present in air.
C) Prefers to grow without oxygen. D) Is killed by oxygen.
 
Answer & Explanation Answer: A) Uses oxygen or grows without oxygen.

Explanation:

The term facultative anaerobe refers to an organism that which uses oxygen when it is present or grows without oxygen when it is not there.

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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:

In what organelle does cellular respiration take place?

A) Cytoplasm B) Ribosomes
C) Mitochondria D) None of the above
 
Answer & Explanation Answer: C) Mitochondria

Explanation:

Cellular respiration is the multi-step process that creates energy from nutrients and food molecules. It begins in the cytoplasm of the cell, with the mitochondria functioning as the main organelle where the rest of the process continues and finishes.

During respiration, glycolysis occurs in the cytoplasm of the cell.

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Q:

Which of the following is a healthy fat?

A) polyunsaturated fat B) enriched fat
C) trans fat D) saturated fat
 
Answer & Explanation Answer: A) polyunsaturated fat

Explanation:

Polyunsaturated fats are healthy fats whcih we can get from eating greeny leaf vegetables, fish and some seeds that are helpful in brain functioning, nutrient rich blood, hair growth, etc...

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