Biomolecules Test

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Biomolecules Test - 50

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Weekly Quiz Competition

Question 1
1 / -0

Which of the following is a polysaccharide?

A
Starch

B
Maltose

C
Lactose

D
Arabinose

Solution

As a rule of thumb, polysaccharides contain more than ten monosaccharide units, whereas oligosaccharides contain three to ten monosaccharide units.

Starch is a polysaccharide. In it, thousands of monosaccharide units are joined by glycosidic linkages.

Maltose and lactose are disaccharides.

Arabinose is a monosaccharide.

Option A is correct.
Question 2
1 / -0

One way of defining or identifying carbohydrates is to say that they can be described by the general formula, $$C_{m}(H_{2}O)_{n}$$, where m and n may or may not be the same integer.
Of the four structures displayed in the figure above, which one does NOT fit this definition of a carbohydrate?

A
I

B
II

C
III

D
IV

Solution

According to the general formula given in the question, II does not fit in the equation as it has 2 carbon atoms, 4 hydrogen atoms but only 1 oxygen atom.

So, the correct answer is 'ii'.
Question 3
1 / -0

Carbohydrates contain hydrogen and oxygen atoms in the ratio of ____________.

A
1:1

B
2:1

C
2:3

D
1:2

Solution

Compound Formula $$H:O$$
Glucose $$C_6H_{12}O_6$$ $$2:1$$
Ribose $$C_5H_{10}O_5$$ $$2:1$$
Erythrose $$C_4H_8O_4$$ $$2:1$$
Hence the hydrogen oxygen ration in carbohydrates is $$2:1$$.
Question 4
1 / -0

Antibodies recognize and bind to antigens in a manner similar to the interaction between enzyme and substrate. Which of the following are evident in this type of interaction?

A
Covalent bonds

B
Disulfide bonds

C
Hydrogen bonds

D
Peptide bonds

Solution

Hydrogen bonds are weak or temporary bond, that can be easily split or broken and therefore are present between antigen and antibody, so that they can be easily associated and disassociated, similar to enzyme and substrate.
So, the correct answer is 'Hydrogen bonds'
Question 5
1 / -0

Which of the following is a disaccharide?

A
Sucrose

B
Maltose

C
Lactose

D
All of the above

Solution

Sucrose, Maltose and Lactose are disaccharides. They are made up of two monsaccharide units.
Question 6
1 / -0

Coenzyme is :

A
the non-protein component of an enzyme which is loosely held by the enzyme and necessary for its biological activity

B
the protein component of an enzyme which is loosely held by the enzyme and necessary for its biological activity

C
the non-protein or protein component of an enzyme which is loosely held by the enzyme and necessary for its biological activity

D
none of these

Solution

A coenzyme is an organic non-protein compound that binds with an enzyme to catalyze a reaction. A coenzyme cannot function alone, but can be reused several times when paired with an enzyme. Without coenzymes or cofactors, enzymes cannot catalyze reactions effectively.
Question 7
1 / -0

Which of the following is true about alpha amino acids?

A
If the amino group at the chiral carbon lies on the left hand side as in L-(-)-glyceride, the amino acid belongs to L-series.

B
If it is towards right as in D-(+)-glyceraldehyde, it is said to belong to D-series.

C
Both of the above

D
None of the above

Solution

If the amino group at the chiral carbon lies on the left-hand side as in L-(-)-glyceride, the amino acid belongs to L-series.
If it is towards right as in D-(+)-glyceraldehyde, it is said to belong to D-series.
Question 8
1 / -0

One way of defining or identifying carbohydrates is to say, that they can be described by the general formula, $$C_{m}(H_{2}O)_{n}$$, where m and n may or may not be the same integer.
Of the four structures displayed in the figure above, which one does NOT fit this definition of a carbohydrate?

A
I

B
II

C
III

D
IV
Question 9
1 / -0

Which hormone affects physical appearance?

A
Male and female sex hormones

B
Steroid hormones

C
Growth hormones

D
Gonadotropin-releasing hormones
Solution
- Male and female hormones or the gonadotropin-releasing hormones have almost the same functions, they induce the primary and secondary sexual characteristics
Example-Estrogen, progesterone.
- steroid type of hormones play a role in the physiological effect on the body,
Example- Insulin, glucagon.
- Growth type of hormones affects physical appearance.
Example- GH, somatomedin etc.
Question 10
1 / -0

The adrenal glands consist of :

A
lower adrenal and upper paradrenal sections

B
ACTH and BCTH sections

C
the inner and outer layer of the kidney

D
the inner medulla and the outer cortex
Solution
Adrenal glands consist of:- Inner medulla and outer cortex.
Inner medulla(Ectodermal) secretion- catecholamine hormones.
Outer cortex(Mesodermal) secretion- Glucocorticoid, Mineralocorticoid, sex-corticoid.

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Compound	Formula	$$H:O$$
Glucose	$$C_6H_{12}O_6$$	$$2:1$$
Ribose	$$C_5H_{10}O_5$$	$$2:1$$
Erythrose	$$C_4H_8O_4$$	$$2:1$$

Biomolecules Test - 50

Result

Biomolecules Test - 50

Score

-

Rank

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SHARING IS CARING

Question 1

Starch

Maltose

Lactose

Arabinose

Solution

Question 2

I

II

III

IV

Solution

Question 3

1:1

2:1

2:3

1:2

Solution

Question 4

Covalent bonds

Disulfide bonds

Hydrogen bonds

Peptide bonds

Solution

Question 5

Sucrose

Maltose

Lactose

All of the above

Solution

Question 6

the non-protein component of an enzyme which is loosely held by the enzyme and necessary for its biological activity

the protein component of an enzyme which is loosely held by the enzyme and necessary for its biological activity

the non-protein or protein component of an enzyme which is loosely held by the enzyme and necessary for its biological activity

none of these

Solution

Question 7

If the amino group at the chiral carbon lies on the left hand side as in L-(-)-glyceride, the amino acid belongs to L-series.

If it is towards right as in D-(+)-glyceraldehyde, it is said to belong to D-series.

Both of the above

None of the above

Solution

Question 8

I

II

III

IV

Question 9

Male and female sex hormones

Steroid hormones

Growth hormones

Gonadotropin-releasing hormones

Solution

Question 10

lower adrenal and upper paradrenal sections

ACTH and BCTH sections

the inner and outer layer of the kidney

the inner medulla and the outer cortex

Solution

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