Biology Questions

Q:

The fluid mosaic model describes the structure of

A) cell B) plasma membrane
C) nucleus D) All of the above
 
Answer & Explanation Answer: B) plasma membrane

Explanation:
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Q:

The functional connection between two neurons is a

A) Axon B) Synapse
C) Neuroglia D) Dendrites
 
Answer & Explanation Answer: B) Synapse

Explanation:

The functional connection between two neurons is a Synapse.

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Q:

Which base is found only in RNA?

A) Thyamine B) Adenine
C) Uracil D) Cytosine
 
Answer & Explanation Answer: C) Uracil

Explanation:
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Q:

According to Erikson, the goal of adolescence is to

A) independent identity B) explore who they are
C) both a & b D) None of the above
 
Answer & Explanation Answer: C) both a & b

Explanation:

According to psychologist Erik Erikson, Adolescence is the period of life between childhood and adulthood. They go through the psychosocial crisis of identity versus role confusion, which involves exploring who they are as individuals. During this stage, adolescents explore their independence and develop a sense of self i.e independent identity, ego nature.

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Q:

Which of the following is considered a modified stem?

A) Tendril B) Taproot
C) Petiole D) Tuber
 
Answer & Explanation Answer: D) Tuber

Explanation:

Tuber is considered as a modified stem. These type of stems carry out special functions that are important for the plant to survive. Tubers serves as a food reserve and bearing buds wherein new plants can grow.

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Q:

The energy in most ecosystems comes from

A) Water B) Carbon dioxide
C) Sun D) Soil
 
Answer & Explanation Answer: C) Sun

Explanation:

The energy in most ecosystems comes from sun light.

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Q:

Biological membranes are composed of

A) Phospholipids B) Proteins
C) Carbohydrate groups D) All of the above
 
Answer & Explanation Answer: D) All of the above

Explanation:

Biological membranes are composed of phospholipids, Proteins and Carbohydrate groups attached to lipids and proteins.

 

Biological_membranes_are_composed_of1559036778.jpg image

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Q:

Which RNA base pairs with the adenine in DNA?

A) Thymine B) Cytosine
C) Both A & B D) Uracil
 
Answer & Explanation Answer: D) Uracil

Explanation:

In DNA, adenine pairs with Thymine. Similarly, in RNA, due to absence of thymine in RNA and the same structure with uracil helps to pair with adenine.

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