Biology Questions

Q:

When it comes to cholesterol it is better to have

A) more LDL B) more HDL
C) more cholesterol D) a high ratio of LDL to HDL
 
Answer & Explanation Answer: B) more HDL

Explanation:

HDL stands for high-density lipoproteins.

HDL is called the "good" cholesterol because it carries cholesterol from other parts of your body back to your liver. Your liver then removes the cholesterol from your body.

 

Hence, when it comes to cholesterol it is better to have more HDL.

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Q:

Which of the following is an example of parasitism?

A) Leeches consume blood of their host B) Ticks that live on dogs
C) Aphid insects eat the sap of the host plant D) All of the above
 
Answer & Explanation Answer: D) All of the above

Explanation:

The relationship between two organisms such that one lives on the other and one gets benefited while the other get infected.

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Q:

Monosaccharide which is responsible for the sweet taste of fruit?

A) Glucose B) Fructose
C) Mannose D) Ribose
 
Answer & Explanation Answer: B) Fructose

Explanation:

Fructose or Levulose is the monosaccharide that is responsible for the sweet taste of fruit. 

 

Monosaccharides are the simplest of all sugars, contain at least three carbon atoms, and are the building blocks of all carbohydrates.

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Q:

Blood plasma is filtered in 

A) the renal capsule B) the renal column
C) the renal tubule D) the renal corpuscle
 
Answer & Explanation Answer: A) the renal capsule

Explanation:
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Q:

Which statement concerning the diagnosis of ADHD is true?

A) Boys are more likely to be diagnosed with ADHD than girls B) Most children "outgrow" symptoms of ADHD
C) About 20 percent of school-age children are diagnosed with ADHD D) Racial minority status is a good predictor of being diagnosed with ADHD
 
Answer & Explanation Answer: A) Boys are more likely to be diagnosed with ADHD than girls

Explanation:
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Q:

Bacteria and archaea are similar in which of the following?

A) Plasma membrane ester linkage B) Possessing prokaryotic cells
C) Peptidoglycan cell walls D) Methionine as the start signal for protein synthesis
 
Answer & Explanation Answer: B) Possessing prokaryotic cells

Explanation:

Bacteria and archaea are similar in possessing prokaryotic cells.

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Q:

Which of the following statements about DNA replication is false?

A) The enzyme that catalyzes DNA replication is DNA polymerase. B) Unwinding of the DNA molecule occurs as hydrogen bonds break.
C) The process is known as semiconservative replication because one old strand is conserved in the new molecule. D) Replication occurs as each base is paired with another exactly like it.
 
Answer & Explanation Answer: D) Replication occurs as each base is paired with another exactly like it.

Explanation:
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Q:

Sycon (Scypha), Spongilla (Fresh water sponge) and Euspongia (Bath sponge) are examples of which Phylum?

A) Coelenterata B) Platyhelminthes
C) Ctenophora D) Porifera
 
Answer & Explanation Answer: D) Porifera

Explanation:
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