5
Q:

Yellow color of urine is due to presence of

A) Bile juice B) Urochrome
C) Lymph D) Cholesterol

Answer:   B) Urochrome



Explanation:

The yellow color of urine is due to the presence of a yellow pigment, urochrome.

The color of normal urine is usually light yellow to amber. Generally the greater the solute volume the deeper the color.

Subject: Biology
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Q:

What happens during the process of translation?

A) Transfer RNA is made from messenger RNA B) Copies of DNA molecules are made
C) The cell uses information from messenger RNA to produce proteins D) Messenger RNA is made from DNA
 
Answer & Explanation Answer: C) The cell uses information from messenger RNA to produce proteins

Explanation:

Translation is the process by which a protein is synthesized from the information contained in a molecule of messenger RNA (mRNA). During translation, an mRNA sequence is read using the genetic code, which is a set of rules that defines how an mRNA sequence is to be translated into the 20-letter code of amino acids, which are the building blocks of proteins.

 

In short, during the process of translation source language text is conveyed to destination language.

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0 32
Q:

Cellular respiration is best associated with the

A) microtubule B) ribosome
C) Golgi apparatus D) mitochondrion
 
Answer & Explanation Answer: D) mitochondrion

Explanation:

Cellular respiration is best associated with the organelle Mitochondrion.

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2 108
Q:

What prevents food from entering the windpipe?

A) Epiglottis B) Pharynx
C) Trachea D) Larynx
 
Answer & Explanation Answer: A) Epiglottis

Explanation:

Epiglottis is that prevents food from entering the windpipe. 

It is a cartilageous flap that flaps opens and closes when swallowing. When you swallow, the epiglottis flattens backward to cover the entrance to your larynx and prevent food from entering the lungs and windpipe. The epiglottis returns to its usual position after swallowing.

 

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2 52
Q:

What kingdom does Amoeba belong to

A) Plantae B) Protista
C) Monera D) Prokaryotae
 
Answer & Explanation Answer: B) Protista

Explanation:

The Amoebas belong to a group called Protista.

Amoebas are of the animal kingdom subdivision for microscopic organisms - protozoa.

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1 60
Q:

Chylomicrons are synthesized within the

A) Intestinal cells B) Liver
C) Storage compartment of plant seeds D) Lymphatic system
 
Answer & Explanation Answer: D) Lymphatic system

Explanation:

Lipoproteins are particles that contain triacylglycerol (TAG), cholesterol, phospholipids and amphipathic proteins called apolipoproteins.

 

The four major types of lipoproteins are

1. chylomicrons,

2. very low-density lipoprotein (VLDL),

3. low-density lipoprotein (LDL), and

4. high-density lipoprotein (HDL).

 

Chylomicrons are formed in the endoplasmic reticulum in the absorptive cells (enterocytes) of the small intestine.

 

The function of these lipoproteins is to deliver energy-rich triacylglycerol (TAG) to cells in the body (pink pathway). TAG is stripped from chylomicrons and VLDL through the action of lipoprotein lipase, an enzyme that is found on the surface of endothelial cells. This enzyme digests the TAG to fatty acids and monoglycerides, which can then diffuse into the cell to be oxidized, or in the case of an adipose cell, to be re-synthesized into TAG and stored in the cell.

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2 79
Q:

Which of the following is an endocrine gland?

A) Mammary glands B) Apocrine sweat glands
C) Reproductive glands D) Salivary glands
 
Answer & Explanation Answer: C) Reproductive glands

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:

pineal gland,

pituitary gland,

pancreas,

ovaries,

testes,

thyroid gland,

parathyroid gland,

hypothalamus and

adrenal glands.

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1 132
Q:

Gluconeogenesis is a term that describes the synthesis of

Answer

Gluconeogenesis is a metabolic pathway that leads to the synthesis of glucose from pyruvate and other non-carbohydrate precursors, even in non-photosynthetic organisms.


 


It occurs in all microorganisms, fungi, plants and animals, and the reactions are essentially the same, leading to the synthesis of one glucose molecule from two pyruvate molecules. Therefore, it is in essence glycolysis in reverse, which instead goes from glucose to pyruvate, and shares seven enzymes with it.

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0 56
Q:

Which of the following occurred in the presence of tetrodotoxin?

A) The number of action potentials decreased. B) The size of the action potential increased.
C) The number of action potentials increased. D) The size of the action potential decreased.
 
Answer & Explanation Answer: A) The number of action potentials decreased.

Explanation:
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