Quiz about GENERAL BIOLOGY FINALS REVIEW

Question 1

What do you call is the process that there is a bulk uptake of liquid?

Accepted Answer

Pinocytosis

Answer

Exocytosis

Answer

Endocytosis

Answer

PhagocytosiS

Question 2

Reabsorption of useful molecules or ions in kidneys occur through what mechanism?

Accepted Answer

active transport

Answer

diffusion

Answer

partial osmosis

Answer

differential osmosis

Question 3

Engulfing of bacteria by white blood cells is called as?

Accepted Answer

Phagocytosis

Answer

Exocytosis

Answer

Endocytosis

Answer

Pinocytosis

Question 4

Concentration gradient is said to exist when the concentration of?

Accepted Answer

ions is more inside cell and less outside cell

Answer

water enters the cell via osmosis

Answer

hypertonic solution enters cells

Answer

ions is lesser inside cell and more outside cell

Question 5

Potassium ions enter the cell via what type of transport mechanism?

Accepted Answer

active transport

Answer

diffusion

Answer

endocytosis

Answer

pinocytosis

Question 6

It is the kind of substance being consumed in the course of a chemical reaction.

Accepted Answer

reagent

Answer

reactant

Answer

oxidant

Answer

reductant

Question 7

The substance that is added to test if a reaction occurs.

Accepted Answer

reactant

Answer

reagent

Answer

oxidant

Answer

reductant

Question 8

What do you call is the reaction that contains the element that is oxidized?

Accepted Answer

reductant

Answer

reagent

Answer

reactant

Answer

oxidant

Question 9

It contains the element that is reduced.

Accepted Answer

oxidant

Answer

reagent

Answer

reactant

Answer

reductant

Question 10

The following statements are correct in terms with the oxidation-reduction (redox) reaction, except for?

Accepted Answer

Spontaneous redox reactions are generally endothermic.

Answer

All redox reactions involve the transfer of electrons from one atom to another.

Answer

Reduction can be removal of oxygen/electronegative element from a substance.

Answer

Oxidation can be removal of hydrogen/ electropositive element from a substance.

Question 11

Substrate binds in the active site.

Accepted Answer

True

Answer

False

Question 12

An enzyme is usually lipid biological catalyst.

Accepted Answer

False

Answer

True

Question 13

The reactant molecule that an enzyme works on is the Substrate.

Accepted Answer

True

Answer

False

Question 14

A Catalyst retards the chemical reaction without being changed.

Accepted Answer

False

Answer

True

Question 15

DNA and RNA polymerases are examples of Holoenzyme.

Accepted Answer

True

Answer

False

Question 16

Foods treated with salt or sugar have longer shelf life. Explain the reason for using salt and sugar for food preservation.

Accepted Answer

One way of preventing food spoilage is to store foods in strong salt solutions (brine) or in sugar solutions (syrup). These solutions contain concentrated amounts of solutes (salt or sugar) and are hypertonic to the cytoplasm of microorganisms. Brine and syrup solutions can cause removal of water from the cytoplasm resulting in dehydration followed by death of the invading microbes. Such removal of water is involved in the process of osmosis. Pork, beef and fish meat are some of the food stored in brine. Fruits are often preserved in syrup.

Answer

Two ways of preventing food spoilage is to store foods in strong salt solutions (brine) and in sugar solutions (syrup). These solutions cannot contain concentrated amounts of solutes (salt or sugar) and are hypertonic to the cytoplasm of microorganisms. Brine and syrup solutions can cause removal of water from the cytoplasm resulting in dehydration followed by death of the invading microbes. Such removal of water is involved in the process of osmosis. Pork, beef and fish meat are some of the food stored in brine. Fruits are often preserved in syrup.

Answer

One way of preventing food spoilage is to store foods in strong salt solutions (brine) or in sugar solutions (syrup). These solutions lower concentrated amounts of solutes (salt or sugar) and are hypotonic to the cytoplasm of microorganisms. Brine and syrup solutions can cause removal of water from the cytoplasm resulting in dehydration followed by death of the invading microbes. Such removal of water is involved in the process of osmosis. Pork, beef and fish meat are some of the food stored in brine. Fruits are often preserved in syrup.

Answer

One way of preventing food spoilage is to store foods in strong salt solutions (brine) or in sugar solutions (syrup). These solutions contain concentrated amounts of solutes (salt or sugar) and are hypertonic to the cytoplasm of microorganisms. Brine and syrup solutions can cause accumulation of water from the cytoplasm resulting in hydration followed by death of the invading microbes. Such removal of water is involved in the process of osmosis. Pork, beef and fish meat are some of the food stored in brine. Fruits are often preserved in syrup.

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