4th

Question 1

The color of fruit like papaya is attributed to a pigment which is a precursor of Vitamin A. This substance is

Answer 1

carotene

Question 2

A hormone secreted by the pancreas that regulates glucose metabolism is called

Answer 2

insulin

Question 3

The disaccharide formed by ß- glycosidic bond is

Answer 3

lactose

Question 4

In phototrophic cells, the ______ is the organelle serving as the major cell power in the house

Answer 4

chloroplast

Question 5

Defined as the quantity of enzymes needed to transform 1.0 micromole of substrate to product per minute at 30°C and optimal pH.

Answer 5

Internaltional unit

Question 7

The only source that naturally contains vitamin D

Answer 7

fish oil

Question 8

It states that there is a topographical, structural compatibility between and enzyme
and its substrate

Answer 8

lock and key theory

Question 9

Plants that are devoid of chlorophyll and are therefore unable to synthesize their own food.

Answer 9

fungi

Question 10

Which of the following vitamins is water-soluble?

Answer 10

vitamin C

Question 11

The fundamental cause of sickle-cell disease is a change in the structure of

Answer 11

hemoglobin

Question 12

It is the major form of stored carbohydrate in animals.

Answer 12

glycogen

Question 13

Which of the following is a saturated fatty acid?

Answer 13

palmitic acid

Question 14

A measure of the degree of unsaturation of a fatty acid

Answer 14

iodine number

Question 15

These are DNA or RNA coated protein that may or may not be considered as living things.

Answer 15

virus

Question 16

Non-photosynthetic eucaryotes, highly organized with soil as its major habitat

Answer 16

protozoa

Question 17

Bacteria which grow over the temperature range of 30°C to 40°C are called

Answer 17

mesophiles

Question 18

Group of microorganisms that grow in the presence of low oxygen concentration are

Answer 18

microaerophils

Question 19

These are very small bound particles that release digestive enzymes and contribute to the digestion of nutrients in a cell

Answer 19

lysosomes

Question 20

Hydrolysis of one mole of sucrose gives

Answer 20

I mole of glucose and 1 mole of fructose

Question 21

The isoelectric point of isoleucine (2.36,9.68) is

Answer 21

6.02

Question 22

Method used to free milk from disease or germs

Answer 22

Pasteurisation

Question 23

The power house of the cell is called

Answer 23

Mitochondria

Question 24

The microorganism utilized in the production of pickles is

Answer 24

lactic acid bacteria

Question 25

This is the early period of growth where the organism adjusts to its new environment

Answer 25

lag phase

Question 26

Genetic information is stored in the structure of the DNA molecule. Which of the following obtains the code for protein synthesis from DNA and serves as the template for peptide formation?

Answer 26

messenger RNA

Question 27

There are several forms suggested by which the hyperbolic Michaelis Menten equation may be expressed linearly. If the substrate concentration, S, is plotted
against reaction velocity, V; a linear plot is obtained. The equation is called

Answer 27

Eisentahl and Cornish-Bowden

Question 28

The enzyme in the stomach is

Answer 28

pepsin

Question 29

The organism that reproduces by sporulation is

Answer 29

molds

Question 30

Organism that grows or uses CO2, as its principal carbon source.

Answer 30

autotroph

Question 31

a basic amino acid is

Answer 31

lysine

Question 32

The time to kill all bacteria in a particular culture at a specified temperature.

Answer 32

TDT

Question 33

These are the most abundant organic molecules in living cells

Answer 33

proteins

Question 34

Type of bacteria that are considered to be ancient organisms such as methanogends, halobacteria, and thermoacidophiles

Answer 34

archaebacteria

Question 35

which of the following is not a steroid

Answer 35

prostaglandin

Question 36

steroid

Answer 36

sex hormone
cholesterol
adrenocortical hormones

Question 37

Bacteria which convert alcoholic solution to vinegar are

Answer 37

acetobacters

Question 38

The biological decomposition of organic matter accompanied by the production of foul smelling products in an anaerobic condition is

Answer 38

putrefaction

Question 39

A waste treatment process by which biologically active growths are continuously circulated with incoming biodegradable waste in the presence of oxygen is

Answer 39

activated sludge process

Question 40

The temperature at which a microorganism is killed within a period of 10 minutes.

Answer 40

TDP

Question 41

A visible concentrated growth of algae or other aquatic life/plants is called

Answer 41

bloom

Question 42

Materials in which microorganisms are grown in a laboratory are

Answer 42

culture media