Biology Questions

Q:

Which of the following is not a function of proteins?

A) Build tissues such as bone and muscle B) Help to fight disease
C) Nail formation D) Store and transmit Heredity
 
Answer & Explanation Answer: D) Store and transmit Heredity

Explanation:

Protiens can help fight specific diseases, always there to regulate cell processes and build muscle/tissues.


Structural proteins also known as Fibrous proteins, are necessary components of your body. They include collagen, keratin and elastin. Collagen forms the connective framework of your muscles, bones, tendons, skin and cartilage. Keratin is the main structural component in hair, nails, teeth and skin.

 

  • Nucleic acids store and transmit heredity.
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Q:

Nucleoli are present during

A) prophase B) anaphase
C) interphase D) prometaphase
 
Answer & Explanation Answer: C) interphase

Explanation:

Nucleoli are present during Interphase.

Chromosomes become visible during Prophase.

Centromeres divide and sister chromatids become full-fledged chromosomes during Anaphase.

Spindle fibers attach to kinetochores during Prometaphase.

 

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Q:

Which is not a basic function of a cell?

A) stopping homeostasis from happening B) obtaining and storing energy
C) removing waste D) transferring genetic information
 
Answer & Explanation Answer: A) stopping homeostasis from happening

Explanation:
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Q:

Movement of cell against concentration gradient is called

A) active transport B) diffusion
C) osmosis D) passive transport
 
Answer & Explanation Answer: A) active transport

Explanation:

The only transport method that can move species against their concentration gradient i.e, from low to high concentration is called Active transport.

 

Facilitated diffusion only moves species down their concentration gradient i.e, from high to low concentration.

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Q:

Veins seen in the leaves, serve the function of

A) Transpiration B) Photosynthesis
C) Storage D) Conduction
 
Answer & Explanation Answer: A) Transpiration

Explanation:

Veins seen in the leaves, serve the function of Transpiration.

Related image

Transpiration is the process by which moisture is carried through plants from roots to small pores on the underside of leaves, where it changes to vapor and is released to the atmosphere. 

 

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Q:

Which best describes somatic mutations?

A) transmitted to progeny B) not transmitted to progeny
C) Can't be identified D) None of the above
 
Answer & Explanation Answer: A) transmitted to progeny

Explanation:

The best example for somatic mutation would be cancer, familial cancer (which transmits through gametes to the next generation) are not so common while sporadic cancer is seen the most where body cells of a particular area goes through mutations for a number of years and becomes cancerous, but it is not transmitted to next generation.

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Q:

Which virus is not associated with cancer?

A) Epstein-Barr virus B) Papillomavirus
C) Retrovirus D) Hepatitis virus
 
Answer & Explanation Answer: C) Retrovirus

Explanation:

In the above given options, Retrovirus is the only virus which is not associated with cancer. Here the viruses which are associated with different types of cancer. They are:

Hepatitis virus which is associated with Liver cancer

Papillomavirus which is associated with Cervical cancer

Epstein-Barr virus which is associated with Burkitt's lymphoma.

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Q:

Which one of the following is true of tRNAs?

A) tRNAs are double-stranded. B) There are four types of tRNA.
C) Each tRNA binds a particular amino acid. D) All of the above
 
Answer & Explanation Answer: C) Each tRNA binds a particular amino acid.

Explanation:

tRNA abbreviated as A transfer RNA is an adaptor molecule composed of RNA, typically 76 to 90 nucleotides in length, that serves as the physical link between the mRNA and the amino acid sequence of proteins.

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