Biology Questions

Q:

Select the correct statement about active and passive immunity.

A) A vaccination is an example of the introduction of passive immunity into the body B) Active and passive humoral immunity are both mechanisms of adaptive immunity that useantibodies
C) Immunological memory is established by passive immunization D) The antibodies utilized in active immunity are acquired from another organism
 
Answer & Explanation Answer: B) Active and passive humoral immunity are both mechanisms of adaptive immunity that useantibodies

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Q:

Which organelle performs cellular respiration?

A) mitochondria B) cytolasm
C) chloroplasts D) All of the above
 
Answer & Explanation Answer: A) mitochondria

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Q:

In what chief capacity does vitamin k function?

A) raise plasma calcium B) blood clot
C) produce rhodopsin D) bone density
 
Answer & Explanation Answer: B) blood clot

Explanation:

The chief capacity of vitamin K is to help our blood clot so that we don't bleed too much.

Vitamin K is actually made up of two different types of vitamins, Vitamin K1 and Vitamin K2. They are both responsible for helping the blood to clot so that people do not bleed to death. Vitamin K1 can be consumed by eating leafy green vegetables, such as kale and spinach, as well as other vegetables, such as broccoli and collard greens. Meats, cheeses, and eggs can provide a great source of Vitamin K2.

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Q:

Animals like annelids and arthropods etc where the body can be divided into identical left and right halves in only one plane, exhibit ________ symmetry.

A) Coelenterata B) Radial
C) Ctenophora D) Bilateral
 
Answer & Explanation Answer: D) Bilateral

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Q:

Smallest cell in human body is

A) Ovum B) Nerve cell
C) Sperm D) None of the above
 
Answer & Explanation Answer: C) Sperm

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Q:

Slow oxidative muscle fibers are best suited for

A) Hitting football B) Heavy workout in the gym
C) Running a marathon D) None of the above
 
Answer & Explanation Answer: C) Running a marathon

Explanation:

The three types of muscle fibers are slow oxidative (SO), fast oxidative (FO) and fast glycolytic (FG). Slow oxidative fibers use aerobic metabolism to produce low power contractions over long periods and are slow to fatigue.

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Q:

The O-T-C medicine Crocin is an

A) Analgesic B) Antipyretic
C) Analgesic and antipyretic D) Antiseptic
 
Answer & Explanation Answer: C) Analgesic and antipyretic

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Q:

Which is not a function of the cell membrane?

A) helps substances pass from the cytoplasm into the nucleus B) keeps materials within the cell separated from the environment outside the cell
C) helps control the movement of materials into and out of the cell D) allows the cell to change shape under pressure
 
Answer & Explanation Answer: A) helps substances pass from the cytoplasm into the nucleus

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