76
Q:

From the following pairs, find the one which is correctly matched?

 

A) Scurvy- Thiamine B) Tuberculosis- ATS
C) Tetanus- BCG D) Malaria- Chloroquine

Answer:   D) Malaria- Chloroquine



Explanation:

Chloroquine is a medication used to prevent and to treat malaria.

Subject: Biology
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Q:

Why is DNA called the blueprint of life?

Answer

DNA is called the blueprint of life because it contains the instructions needed for an organism to grow, develop, survive and reproduce. DNA does this by controlling protein synthesis. Proteins do most of the work in cells, and are the basic unit of structure and function in the cells of organisms.

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2 2260
Q:

Do plant cells have Mitochondria?

A) No B) Yes
C) May be D) Can't be determined
 
Answer & Explanation Answer: B) Yes

Explanation:

While plant cells have chloroplasts to photosynthesize, they also require ATP for cellular functions, and do use oxygen to break down some of the sugar they produce in order to generate that ATP. Cellular respiration takes place in the mitochondria. They need mitochondria for this reason.
Hence with this logic, we can say that Plants cells have mitochondria.

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2 1780
Q:

Which of the following is not an Endocrine Gland?

A) Spleen B) Pituitary
C) Thyroid D) Adrenal
 
Answer & Explanation Answer: A) Spleen

Explanation:

Endocrine glands are glands of the endocrine system that secrete their products, hormones, directly into the blood rather than through a duct.

 

The major glands of the endocrine system include the

pineal gland,

pituitary gland,

pancreas,

ovaries,

testes,

thyroid gland,

parathyroid gland,

hypothalamus and

adrenal glands.

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30 15149
Q:

Which event occurs during interphase?

A) Centrioles appear B) Spindle fibers begin to form
C) The cell grows D) Centromeres divide
 
Answer & Explanation Answer: C) The cell grows

Explanation:

The cell carries out the metabolic processes and it grows during interphase.

The cell cycle has three phases that must occur before mitosis, or cell division happens. These three phases are collectively known as interphase. They are G1, S, and G2.

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2 2143
Q:

Which of these is not a function of the kidneys?

A) The kidneys regulate the plasma volume B) The kidneys help to regulate blood pressure
C) The kidneys help control the rate of red blood cell production D) The kidneys deactivate vitamin D and stimulate the activity of osteoclasts
 
Answer & Explanation Answer: D) The kidneys deactivate vitamin D and stimulate the activity of osteoclasts

Explanation:

The kidneys deactivate vitamin D and stimulate the activity of osteoclasts is wrong among the functions of kidneys.

 

The kidneys are two bean-shaped organs in the renal system. They help the body pass waste as urine. They also help filter blood before sending it back to the heart.

 

The kidneys perform many crucial functions, including:

  • maintaining overall fluid balance.
  • regulating and filtering minerals from the blood.
  • filtering waste materials from food, medications, and toxic substances.
  • creating hormones that help produce red blood cells, promote bone health, and regulate blood pressure.
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10 8163
Q:

How many Nephrons are in each kidney?

A) 10,000 B) 1,00,000
C) 1,000,000 D) 1000
 
Answer & Explanation Answer: C) 1,000,000

Explanation:

There are about 1,000,000 nephrons in each human kidney.

Nephron, functional unit of the kidney, the structure that actually produces urine in the process of removing waste and excess substances from the blood.

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2 3430
Q:

Compared to land, the open oceans

A) are rich in silica and iron B) are nutrient-poor environments
C) contain unlimited nitrogen D) are nutrient-rich environments
 
Answer & Explanation Answer: B) are nutrient-poor environments

Explanation:
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Q:

Reflex actions are controlled by

A) The Spinal Chord B) The Nerves
C) The cells D) The Brain
 
Answer & Explanation Answer: A) The Spinal Chord

Explanation:

A reflex arc is a neural pathway that controls a reflex. In vertebrates, most sensory neurons do not pass directly into the brain, but synapse in the spinal cord. This allows for faster reflex actions to occur by activating spinal motor neurons without the delay of routing signals through the brain.

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3 1704