Biology Test 92

Question 1
4 / -1

Glycosidic bond results from :-

A
Dehydration synthesis reaction

B
Hydrolysis reaction

C
Esterification reaction

D
Isomerisation reaction

Question 2
4 / -1

Choose the incorrect option for Enzymes :

A
Enzymes generally function in a narrow range of temperature and pH

B
Enzymatic activity declines below the optimum value of temperature

C
Enzymatic activity increases above the optimum value of temperature

D
When the inhibitor closely resembles the substrate in its molecular structure and inhibits the activity of enzyme, it is known as competitive inhibitor.

Question 3
4 / -1

Active K⁺ exhange mechanism for stomatal movement was given by :-

A
Von Mohl

B
Scarth

C
Levitt

D
Steward

Question 4
4 / -1

Active transport :-

A
uses energy to pump molecules against the concentration gradient

B
Highly selective

C
is carried out by membrane proteins

D
all of these

Question 5
4 / -1

Which technique can be used to separation of leaf pigments ?

A
Chromatography

B
Radio isotopic technique

C
Gel Electrophoresis

D
Centrifugation

Question 6
4 / -1

How many NADPH molecules are required to form one sucrose in calvin cycle ?

A
12 NADPH

B
2 NADPH

C
24 NADPH

D
6 NADPH

Question 7
4 / -1

The function of hexokinase is :-

A
Phosphorylation of sugar

B
Oxidation of sugar

C
Dephosphorylation of sugar

D
Break down to sugar

Question 8
4 / -1

A. Enzymes for the glycolysis are present in cytoplasm

B. Enzymes for the anaerobic respiration are present in the cytoplasm

C. Enzymes for the lactic acid fermentation are present in cytoplasm of plant cell

D. Enzymes for the alcoholic fermentation are present in cytoplasm of the animal cell

Read the above given all the statement A to D and choose the correct option :-

A
A is correct and B and D are incorrect

B
A is correct but C and D are incorrect

C
A is incorrect but C and D are correct

D
A is incorrect but C and B are correct

Question 9
4 / -1

Yucca is pollinated by :-

A
Insects

B
Wind

C
Water

D
Self pollnation

Question 10
4 / -1

In some plants where flowering occurs more than once what would you will call the inter flowering period :

A
Juvenile

B
Mature

C
Senescent

D
Aging

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Biology Test 92...

Question 1

Dehydration synthesis reaction

Hydrolysis reaction

Esterification reaction

Isomerisation reaction

Question 2

Enzymes generally function in a narrow range of temperature and pH

Enzymatic activity declines below the optimum value of temperature

Enzymatic activity increases above the optimum value of temperature

When the inhibitor closely resembles the substrate in its molecular structure and inhibits the activity of enzyme, it is known as competitive inhibitor.

Question 3

Von Mohl

Scarth

Levitt

Steward

Question 4

uses energy to pump molecules against the concentration gradient

Highly selective

is carried out by membrane proteins

all of these

Question 5

Chromatography

Radio isotopic technique

Gel Electrophoresis

Centrifugation

Question 6

12 NADPH

2 NADPH

24 NADPH

6 NADPH

Question 7

Phosphorylation of sugar

Oxidation of sugar

Dephosphorylation of sugar

Break down to sugar

Question 8

A is correct and B and D are incorrect

A is correct but C and D are incorrect

A is incorrect but C and D are correct

A is incorrect but C and B are correct

Question 9

Insects

Wind

Water

Self pollnation

Question 10

Juvenile

Mature

Senescent

Aging

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