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Revision Biology

Total questions: 79

Worksheet time: 48mins

Name
Class
Date
1.
What is a substance called if it speeds up a chemical reaction?
a)
reusable
b)
catalyst
c)
specific
d)
fragile
2.
With what 3 letters do enzymes typically end?
a)
-ose
b)
-ase
c)
-ese
d)
-tic
3.

Enzymes are an example of

a)

Lipids

b)

Carbohydrate

c)

Protein

d)

Nucleic Acid

4.
Each enzyme only has 1 substrate that will fit its active site.  What is this called?
a)
reusable
b)
catalyst
c)
specific
d)
fragile
5.
In the diagram, what is letter A? 
a)
product
b)
substrate
c)
enzyme-substrate complex
d)
active site
6.
Letter D...
a)
active site
b)
enzyme
c)
substrate
d)
products
7.
Letter B...
a)
active site
b)
enzyme
c)
substrate
d)
products
8.
Letter C...
a)
active site
b)
enzymes
c)
substrate
d)
products
9.
Letter E...
a)
active site
b)
enzyme
c)
substrate
d)
products
10.
An enzyme speeds up a reaction by
a)
lowering the activation energy.
b)
raising the activation energy.
c)
releasing energy.
d)
absorbing energy.
11.

Which of the following best explains why enzymes are necessary for reactions in our cells?

a)

The reactions are too slow to meet the needs of the cell if enzymes are missing.

b)

Enzymes supply the oxygen necessary for the reactions.

c)

Enzymes change reactants from solid to liquid during the reactions.

d)

The reactions take up too much space in the cell if enzymes are missing.

12.

The ____________________ mechanism describes how each substrate must fit into the enzyme.

a)

lock and key

b)

hammer and nail

c)

jigsaw puzzle

d)

seesaw

13.

Where do substrates bind to an enzyme?

a)

calcium channels

b)

active site

c)

receptor molecules

d)

voltage-gated channels

14.
Enzymes will make a reaction go _______ and use ______ energy.
a)
faster, less
b)
faster, more
c)
slower, less
d)
slower, more
15.
Which of the following tasks listed below is most associated with enzymes?
a)
catalyze chemical reactions                  
b)
store genetic information       
c)
store chemical energy in the cell   
d)
dissolve nutrients and minerals 
16.
Enzymes are capable of increasing the rate of a chemical reaction within a living cell.  Enzymes accomplish this through which of the following means?
a)
reducing the number of products   
b)
reducing the activation energy
c)
increasing the temperature of the cell
d)
increasing the concentration of reactants 
17.
Cells can produce over one thousand different enzymes at a time.  Enzymes are critical to the metabolism of these cells, but why are so many different enzymes needed?
a)
Cells are completely unable to control what enzymes
they produce
b)
The variety of enzymes prevents their actions from being inhibited. 
c)
The active site of an enzyme can only bind to a specific substrate.
d)
The products of a reaction are always converted into new enzymes.
18.
Any substance that is acted upon by an enzyme is called a(n)?
a)
Coenzyme
b)
Substrate
c)
Vitamin
d)
Polypeptide
19.

Which enzyme used for lipid?

a)

lipase

b)

amaylase

c)

protein

d)

fat

20.
Enzymes are capable of increasing the rate of a chemical reaction within a living cell.  Enzymes accomplish this through which of the following means?
a)
reducing the number of products   
b)
reducing the activation energy
c)
increasing the temperature of the cell
d)
increasing the concentration of reactants 
21.
Any substance that is acted upon by an enzyme is called a(n)?
a)
Coenzyme
b)
Substrate
c)
Vitamin
d)
Polypeptide
22.
Enzymes are considered to be 
a)
Lipids
b)
Carbohydrate
c)
Protein
d)
Nucleic Acid
23.
What is the purpose  of an enzyme?
a)
give permission for the reaction
b)
raise activation energy
c)
speed up reactions
d)
control how many reactions occur
24.
Where do substrates bind on an enzyme?
a)
voltage-gated channels
b)
surface receptor
c)
calcium channels
d)
active site
25.

What are the enzymes called when they are at high temperature or extreme pH?

a)

denatured

b)

Killed

c)

inactive

d)

normal

26.
What happens to an enzyme when it is denatured?
a)
Activation energy is lowered.
b)
It becomes stronger.
c)
It loses its shape.
d)
Activation energy is raised.
27.

Which molecule would most likely react with the enzyme?

a)

A

b)

B

c)

C

d)

D

28.

Enzyme function is based on their

a)

size

b)

weight

c)

DNA

d)

shape

29.

What type of macromolecule are enzymes?

a)

Carbohydrates

b)

Lipids

c)

Proteins

d)

Nucleic Acids

30.

Where do substrates bind to an enzyme?

a)

calcium channels

b)

active site

c)

receptor molecules

d)

voltage-gated channels

31.

Once a new product leaves an enzyme, the enzyme is unchanged and ready for the next substrate. What is this called?

a)

fragile

b)

reusable

c)

specific

d)

catalyst

32.

After the enzyme and substrate bind together and perform the reaction, what does the substrate become?

a)

a substrate

b)

an active site

c)

an enzyme

d)

a product

33.

Enzymes are _______________ that _____________________ chemical reactions by ____________ the amount of activation energy required to start the reaction.

a)

carbohydrates, slow down, lowering

b)

proteins, speed up, increasing

c)

lipids, speed up, lowering

d)

proteins, speed up, lowering

34.
Which of the following tasks listed below is most associated with enzymes?
a)
catalyze chemical reactions                  
b)
store genetic information       
c)
store chemical energy in the cell   
d)
dissolve nutrients and minerals 
35.
Cells can produce over one thousand different enzymes at a time.  Enzymes are critical to the metabolism of these cells, but why are so many different enzymes needed?
a)
Cells are completely unable to control what enzymes
they produce
b)
The variety of enzymes prevents their actions from being inhibited. 
c)
The active site of an enzyme can only bind to a specific substrate.
d)
The products of a reaction are always converted into new enzymes.
36.
What are the enzymes called when they are at low temperature? 
a)
denatured
b)
Killed
c)
inactive
d)
normal
37.
An enzyme speeds up a reaction by
a)
lowering the activation energy.
b)
raising the activation energy.
c)
releasing energy.
d)
absorbing energy.
38.

Which is a definition for photosynthesis?

a)

Releasing energy from nutrients

b)

The breaking down of large insoluble molecules into small soluble molecules

c)

The process by which plants make carbohydrates from raw materials using energy from light

d)

The movement of particles from a high concentration to a low concentration

39.

Carbon dioxide is absorbed through the

a)

Stoma

b)

Cuticle

c)

Vessel

d)

Palisade Cells

40.

Chlorophyll is the ___ pigment found in the chloroplast

a)

Blue

b)

Green

c)

Red

d)

Purple

41.

The arrows in the diagram all point to the

a)

Cytoplasm

b)

Nucleus

c)

Mitochondria

d)

Chloroplast

42.

Part of the leaf which allows the diffusion of gases to occur

a)

Palisade Cells

b)

Spongy Mesophyll Cells

c)

Epidermis

d)

Phloem

43.

carbon dioxide + _______ = glucose + oxygen

a)

Water

b)

Hydroxide

c)

Chlorophyll

d)

Sunlight

44.

The following compounds goes in and out of the stoma EXCEPT

a)

Oxygen

b)

Glucose

c)

Carbon Dioxide

d)

Water

45.

In plants the glucose produced in photosynthesis gets stored as which molecule?

a)

Starch

b)

Glycogen

c)

Lipids

d)

Protein

46.

In the absence of which of the following will photosynthesis not occur in leaves?

a)

vacuole

b)

stomata

c)

chlorophyll

d)

cytoplasm

47.

When we observe the lower surface of a leaf through a magnifying lens we see numerous small openings. Which of the following is the term given to such openings?

a)

stomata

b)

midrib

c)

vein

d)

lamina

48.

What are the nutrients plants get from Air?

a)

Water

b)

Oxygen

c)

Carbon Dioxide

d)

Chlorophyll

e)

Sunlight

49.

Organisms which prepare food for themselves using simple naturally available raw materials are referred to as

a)

heterotrophs

b)

autotrophs

c)

parasites

d)

saprophytes

50.

It is the process by which organisms obtain energy and nutrients from food, for growth, maintenance and repair.

a)

Nutrition

b)

Nutrients

c)

Photosynthesis

d)

Respiration

51.

They are all the elements and compounds taken into a living thing.

a)

Nutrition

b)

Nutrients

c)

Fruits and vegetables

d)

Meat

52.

'Autos' in the word autotrophic means:

a)

self

b)

feed

c)

light

d)

animals

53.

Which of the following organisms is a parasite?

a)

dog

b)

bird

c)

whale

d)

flea

54.

What do you call the organisms exhibiting heterotrophic mode of nutrition?

a)

Saprotrophs

b)

Holos

c)

Autotrophs

d)

Heterotrophs

55.

Which of the following has the correct sequence in the stages of holozoic nutrition?

a)

digestion, absorption, assimilation, egestion, ingestion

b)

ingestion, digestion, egestion, assimilation, absorption

c)

ingestion, digestion, absorption, assimilation, egestion

d)

absorption, digestion, assimilation, ingestion, egestion

56.

What do you call the organism that lives on or in the body of a living organism and obtain nutrients from the host?

a)

parasite

b)

host

c)

carnivore

d)

animals

57.

What do you call the organisms that feed on decaying organic matter?

a)

parasites

b)

herbivore

c)

autotrophs

d)

saprophytic organisms

58.

Heteros means _______.

a)

others

b)

animal

c)

light

d)

chemical

59.

Which organelle is responsible making food (Glucose) using sunlight?

a)

Ribosomes

b)

Nucleus

c)

Chloroplast

d)

Mitochondria

60.

What is the green pigment that "traps" sunlight?

a)

Chlorophyll

b)

Chloroplasts

c)

Photosynthesis

d)

ATP

61.
Which nutrient is the number one energy source for the body?
a)
Grains
b)
Vegetables
c)

Glucose

d)
Vitamins
62.
Which of the following is the correct equation for PHOTOSYNTHESIS?
a)
carbon dioxide + water --> oxygen + glucose
b)
carbon dioxide + glucose + water --> oxygen 
c)
oxygen + water --> carbon dioxide + glucose
d)
glucose+ oxygen ---> water + carbon dioxide 
63.

What is storage product in plants.

a)

Starch

b)

food

c)

Glucose

d)

Sucrose

64.

What is role of chlorophyll.

a)

make food

b)

Change light energy to chemical energy

c)

tranfer food

d)

photosynthesis

65.

In which form Glucose transport in Plants.

a)

Starch

b)

Sucrose

c)

Glucose

d)

none of these

66.

What does a Nitrogen deficiency look like?

a)

Tip and center veins become yellow.

b)

Yellow spots appear under the leaf.

c)

The stem turns yellow.

d)

The whole leaf turns yellow.

67.

What is the term for when leaves on a plant yellow?

a)

burn

b)

marginal scorch

c)

chlorosis

d)

chlorophyll

68.

Which promotes fast growth of leaves and stems?

a)

Oxygen

b)

Hydrogen

c)

Phosphorus

d)

Nitrogen

69.

Which nutrient is very important in chlorophyll formation?

a)

Iron

b)

Magnesium

c)

Nitrogen

d)

Sulfur

70.

What is chlorosis?

a)

Yellowing of the stem

b)

Shedding of flowers

c)

Rotting of the roots

d)

Yellowing of the leaf blade

71.

Which deficiency?

a)

Iron

b)

Magnesium

c)

Nitrogen

d)

Phosphorus

72.

Which deficiency?

a)

Nitrogen

b)

Phosphorus

c)

Potassium

d)

Sulfur

73.

What are the main uses of Glucose in plants?

a)

Respiration, storage of insoluble starch, making proteins, producing lipids for storage, producing fructose and weakening the cell wall.

b)

Respiration, storage of insoluble starch, making proteins, making cell walls, producing sucrose for storing in fruits and producing lipids for storage.

c)

Storage of insoluble starch, making proteins, making cell walls, producing sucrose for storing in fruits and producing lipids for storage and aerobic respiration.

74.

The glucose made in photosynthesis can be used for respiration to

a)

to produce oxygen for the plant

b)

make more glucose

c)

provide energy for the plant

75.

The glucose made in photosynthesis can converted into starch for

a)

storage

b)

rapid use

c)

to prevent decay

76.

The glucose made in photosynthesis can stored in nuts and seeds as

a)

starch

b)

fats and oils

c)

concentrated glucose

77.

The glucose made in photosynthesis can be converted into cellulose, which is needed to

a)

fill chloroplasts

b)

strengthen cells walls

c)

make chromosomes in the nucleus

78.

The glucose made in photosynthesis can be converted into amino acids to make

a)

starch

b)

fats

c)

protein

79.

To make proteins plants need glucose from photosynthesis to make amino acids and

a)

nitrate ions from the soil

b)

nitrates ion from the atmosphere

c)

carbon dioxide from the air

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