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The Biology

Total questions: 100

Worksheet time: 2hrs 9mins

Name
Class
Date
1.

Which statement about sexual reproduction is always correct?

a)

It involves only one parent.

b)

It involves the fusion of nuclei.

c)

It produces genetically identical offspring.

d)

It takes place only in animals.

2.

Which result with the biuret test shows that protein is present?

a)

blue

b)

green

c)

orange

d)

purple

3.

What is the word equation for photosynthesis?

a)

carbon dioxide + glucose → oxygen + water

b)

carbon dioxide + water → oxygen + glucose

c)

oxygen + glucose → carbon dioxide + water

d)

oxygen + water → carbon dioxide + glucose

4.

Which process can be defined as the movement of small, water-soluble food molecules through the wall of the intestine into the blood?

a)

absorption

b)

assimilation

c)

digestion

d)

egestion

5.

Plants make sugars from water and carbon dioxide. From where do they get the carbon dioxide?

a)

rain soaking into the leaves

b)

the air

c)

the soil through the roots

d)

they make it in photosynthesis

6.

In an experiment, an enzyme from the human alimentary canal is found to work slowly at 20 °C. What is the optimum temperature for enzymes working in the human alimentary canal?

a)

17 °C

b)

27 °C

c)

37 °C

d)

77 °C

7.

Vegetarians do not eat meat.

Which nutrient in meat do vegetarians need to get from other kinds of food?

a)

fibre

b)

protein

c)

starch

d)

vitamin C

8.

Which process is defined as taking substances into the body through the mouth?

a)

absorption

b)

digestion

c)

egestion

d)

ingestion

9.

Proteins that function as biological catalysts are called

a)

enzymes

b)

hormones

c)

solvents

d)

vitamins

10.

Which statement about enzymes is correct?

a)

All enzymes work best at pH 7.

b)

All proteins are enzymes.

c)

Enzymes are biological catalysts.

d)

Low temperatures denature enzymes.

11.

Which structure controls the passage of substances into and out of a cell?

a)

cell membrane

b)

cell wall

c)

nucleus

d)

vacuole

12.

Which two chemical substances are required for photosynthesis?

a)

carbon dioxide and glucose

b)

glucose and oxygen

c)

oxygen and water

d)

water and carbon dioxide

13.

A student observes an artery using a microscope. Which feature is present in an artery?

a)

a wide lumen

b)

valves

c)

walls with a thick layer of muscle

d)

wall only a single cell in thickness

14.

What is the route for carbon dioxide passing out of the body?

a)

alveoli → capillaries → bronchioles → bronchi → trachea → larynx

b)

alveoli → capillaries → bronchi → bronchioles → larynx → trachea

c)

capillaries → alveoli → bronchi → bronchioles → trachea → larynx

d)

capillaries → alveoli → bronchi → bronchioles → trachea → larynx

15.

The following are features of palisade mesophyll cells:


1 column shaped

2 have a nucleus

3 have large vacuoles

4 have many chloroplasts


Which features of these cells help them to absorb maximum light and carry out photosynthesis?

a)

1, 2, 3 and 4

b)

1 and 4 only

c)

2 and 4 only

d)

4 only

16.

What is caused by an iron deficiency in the diet of a human?

a)

bleeding gums

b)

rickets

c)

cannot form white blood cells

d)

anaemia

17.

In which order does food pass through parts of the alimentary canal?

a)

oesophagus → colon → small intestine

b)

small intestine → oesophagus → rectum

c)

small intestine → rectum → anus

d)

stomach → colon → small intestine

18.

These four conditions may be a result of malnutrition.


1 constipation

2 coronary heart disease

3 obesity

4 starvation


Which conditions are a direct result of an imbalance between energy intake and energy output?

a)

1 and 2

b)

1 and 4

c)

2 and 3

d)

3 and 4

19.

When we cut ourselves, blood comes out of the wound. Which constituent of blood is most important in the formation of a blood clot?

a)

plasma

b)

platelets

c)

red blood cells

d)

white blood cells

20.

During pregnancy, the fetus is contained within the amniotic sac. The amniotic sac contains amniotic fluid. What is the function of the amniotic fluid?

a)

It protects the fetus against knocks and bumps.

b)

It provides the fetus with oxygen and nutrients.

c)

It removes the fetal waste products.

d)

It supplies the fetus with blood.

21.

How do molecules move when they are involved in the process of diffusion?

a)

They all move from a high to a low concentration

b)

They all move from a low to a high concentration.

c)

They all move randomly.

d)

They show net movement against a concentration gradient.

22.

When an apple is cut, the cut surface quickly turns brown. This is due to enzyme action. Which action destroys the enzyme?

a)

brushing the cut surface with a strong sugar solution

b)

cutting the apple into smaller pieces

c)

dipping the cut apple in boiling water

d)

dipping the cut apple in cold water

23.

Where does implantation of the embryo normally occur?

a)

Ovary

b)

Fallopian tube

c)

uterus wall

d)

cervix

24.

The statements explain the activity of a human enzyme as the temperature increases from 20 °C to 50 °C. The statements are in the wrong order.


1 The enzyme is working at its optimum rate.

2 The kinetic energy of the enzyme molecules begins to increase.

3 The enzyme begins to change shape.

4 The enzyme is completely denatured.


What is the correct order of the statements?

a)

1 → 3 → 2 → 4

b)

1 → 4 → 3 → 2

c)

2 → 1 → 3 → 4

d)

3 → 2 → 4 → 1

25.

Why do leaves and stems have a waxy coating on them?

a)

So animals don't eat them.

b)

Helps to reduce water loss.

c)

To make them look beautiful.

26.
The leaf has a shiny, waxy cuticle around it to
a)
increase the rate of photosynthesis
b)
attract more light
c)
control water loss
d)
stop carbon dioxide and oxygen gases escaping
27.
Most of the chloroplast cells are found in the
a)
upper epidermis
b)
pallisade mesophyll layer
c)
lower epidermis
d)
stomata
28.
The important gases, carbon dioxide and oxygen, enter and leave the leaf through the
a)
upper epidermis
b)
phloem
c)
stomata
d)
guard cells
29.
Transpiration helps the plant
a)
make more sugars at night
b)
move water from the roots to the stem and leaves
c)
move sugars from the leaf to be stored in the stem & roots
d)
make more chloroplasts
30.
What is A?
a)
pancreas
b)
mouth
c)
gullet
d)
liver
31.
What is B?
a)
pancreas
b)
mouth
c)
gullet
d)
rectum
32.
What is C?
a)
pancreas
b)
gall bladder
c)
liver
d)
rectum
33.
What is D?
a)
pancreas
b)
gall bladder
c)
liver
d)
large intestine
34.
What is E?
a)
pancreas
b)
gall bladder
c)
liver
d)
large intestine
35.
What is F?
a)
pancreas
b)
gall bladder
c)
liver
d)
stomach
36.
What is G?
a)
pancreas
b)
small intestine
c)
liver
d)
large intestine
37.
What is H?
a)
pancreas
b)
small intestine
c)
liver
d)
large intestine
38.
What is I?
a)
pancreas
b)
rectum
c)
gall bladder
d)
anus
39.
What is J?
a)
pancreas
b)
rectum
c)
gall bladder
d)
anus
40.

To which chamber of the heart does an oxygen-rich blood from the lung return?

a)

left atrium

b)

left ventricle

c)

right atrium

d)

right ventricle

41.

Which statement is true about arteries?

a)

Arteries carry oxygen-poor blood.

b)

Arteries move blood toward the heart.

c)

Arteries connect to the atria of the heart.

d)

Arteries move blood away from the heart.

42.

Which part of the blood helps fight disease?

a)

plasma

b)

platelets

c)

red blood cells

d)

white blood cells

43.

Which statement is correct concerning the heart?

a)

Left ventricle pumps blood to the lungs.

b)

Right ventricle pumps blood to the lungs.

c)

Left ventricle pumps to the body including the lungs.

d)

Right ventricle pumps blood to the body excluding the lungs.

44.

Which statement is not true about blood cells?

a)

Blood is made in your heart

b)

Red blood cells mature in about two days.

c)

Red blood cells make up 48 percent of blood volume

d)

People make about two million red blood cells every second.

45.

Which system keeps the blood flowing in one direction through the heart?

a)

switches

b)

one-way valves

c)

pumps

d)

veins

46.

What part of the heart is circled in yellow?

a)

Left atrium

b)

Right atrium

c)

Left ventricle

d)

Right ventricle

47.

What do we call the tiny tubes that return blood back to the heart?

a)

arteries

b)

chambers

c)

veins

d)

ventricles

48.

Your blood is made up of which of the following...

a)

plasma, red blood cells, blue blood cells

b)

white and red blood cells

c)

plasma and platelets

d)

plasma, red blood cells, white blood cells, and platelets

49.

What part of blood is responsible for fighting infections?

a)

Red Blood Cells

b)

White Blood Cells

c)

Platelets

d)

Plasma

50.

What part of blood is responsible for fighting infections?

a)

Red Blood Cells

b)

White Blood Cells

c)

Platelets

d)

Plasma

51.

NUMBER 1 is

a)

Lungs

b)

Pharynx

c)

Mouth

d)

Alveoli

52.

NUMBER 2 is

a)

Pharynx

b)

Bronchi 

c)

Alveoli

d)

Lungs

53.

NUMBER 6 is

a)

Lungs

b)

Trachea

c)

Mouth

d)

Alveoli

54.

Which are the main organs in the respiratory system?

a)

Heart

b)

Stomach

c)

Lungs

d)

Nose

55.

Which of these organs is not a part of the respiratory system?

a)

Trachea

b)

Lungs

c)

Heart

d)

Pharynx

56.

The largest organ(s) in the respiratory system are _____.

a)

Nasal Cavity

b)

Lungs

c)

Bronchi

d)

Larynx

57.
This is a tube about 12cm long with c-shaped rings of cartilage to keep it open
a)
Nasal cavity
b)
Trachea
c)
Mouth Cavity
d)
Pharynx
58.
Clusters of tiny air sacs that allow the exchange of oxygen and carbon dioxide
a)
Pharynx
b)
Diaphragm
c)
Alveoli
d)
Lungs
59.
Muscular structure that helps to expand and contract the lungs, forcing air in and out
a)
Pharynx
b)
Nasal cavity
c)
Alveoli
d)
Diaphragm
60.
Passage way that moistens the air and has hairs to trap dust and particles
a)
Nasal cavity
b)
Bronchi
c)
Mouth cavity
d)
Larynx
61.

When you breathe, your lungs take in ___ and release ___.

a)

oxygen/carbon dioxide

b)

carbon dioxide/waste

c)

waste/air

62.

Within the lungs, the exchange of oxygen and carbon dioxide occurs between the ___ and the capillaries.

a)

alveoli

b)

trachea

c)

bronchi

63.

What is the main organ of the circulatory system?

a)

small intestine

b)

bone

c)

lungs

d)

heart

64.

This type of reproduction involves two parents.

a)

Asexual reproduction

b)

Sexual reproduction

65.

What is the scientific name for a sex cell?

a)

Gromets

b)

Embryo

c)

Gamete

d)

Stem cell

66.

What is the name of the male gamete in humans?

a)

Sperm

b)

Ovum

c)

Testis

d)

Pollen

67.

What is the name of the female gamete in humans?

a)

Sperm

b)

Zygote

c)

Ovary

d)

Ovum

68.

In what type of sexual reproduction are the eggs or ova released into water?

a)

Internal reproduction

b)

External fertilisation

c)

Internal fertilisation

d)

External reproduction

69.

Which animal undergoes external fertilisation?

a)

Cat

b)

Dog

c)

Human

d)

Frog

70.

Where in the body does fertilisation occur in humans?

a)

Epididymis

b)

Uterus

c)

Oviduct

d)

Vagina

71.

What type of fertilisation occurs in this mouse?

a)

Internal fertilisation

b)

Internal reproduction

c)

External reproduction

d)

External fertilisation

72.

Which structure is part of BOTH the reproductive and urinary system?

a)

A

b)

B

c)

C

d)

D

e)

E

73.

What is the function of structure 11?

a)

It controls the release of sperm

b)

It produces hormones that regulate sperm production

c)

It secretes fluid that mixes with sperm to make semen

d)

It stores sperm before they are ejaculated

74.

Which label indicates the ovary?

a)

d

b)

i

c)

c

d)

h

e)

g

75.

Which structure is the Fallopian tube?

a)

1

b)

4

c)

2

d)

5

76.

Occurs on Days 1-5 of the Uterine Cycle

a)

Menstrual Phase

b)

Proliferative Phase

c)

Secretory Phase

d)

Luteal Phase

e)

Follicular Phase

77.

Occurs on Days 6-14 of the Uterine Cycle

a)

Menstrual Phase

b)

Proliferative Phase

c)

Secretory Phase

d)

Luteal Phase

e)

Follicular Phase

78.

Occurs on Days 15-28 of the Uterine Cycle

a)

Menstrual Phase

b)

Proliferative Phase

c)

Secretory Phase

d)

Luteal Phase

e)

Follicular Phase

79.
In the diagram representing the menstrual cycle shown, when does ovulation take place?
a)
between day 6 and 11
b)
between day 17 and 20
c)
between day 1 and 5
d)
between day 12 and 16
80.
That fusion of the male and female gamete to form a zygote is known as ? 
a)
fertilisation
b)
menstruation
c)
pollination
d)
 ejaculation
81.

What does a fertilized egg attach to after it is fertilized?

a)

vagina

b)

cervix

c)

uterus

d)

fallopian tubes

82.

During an acrosome reaction, the acrosome

a)

Detaches, allowing the sperm to penetrate

b)

Releases enzyme that digest the outer layer of the egg

c)

Secretes calcium ions, which cause the sperm to fuse with the egg

d)

Releases inhibin, cause the sperm to bind to the egg

83.

What is NOT a function of the placenta?

a)

nutrient exchange

b)

gas exchange

c)

fluid exchange

d)

antibody exchange

84.

What is the structure that acts as temporary organ to allow exchange of substances between mother and foetus.

a)

umbilical cord

b)

uterus

c)

placenta

d)

amniotic sac

85.

What is the function of amniotic fluid?

a)

acts as cushion to support and protect from mechanical shock

b)

to connect the foetus and the placenta

c)

to form a sac and enclosed the foetus

d)

to allow exchange of substances between the foetus and the mother

86.

On what day of the month does ovulation usually occur?

a)

1

b)

5

c)

14

d)

28

87.

What word is used to describe when the embryo buries into the uterus lining?

a)

fertilisation

b)

implantation

c)

menstruation

d)

ovulation

88.

Which of the following move from the foetal blood to the mother's blood?

a)

urea

b)

antibodies

c)

oxygen

89.

A drug that is inhaled into the lungs and alters the functions of the mind.

a)

Stimulants

b)

Depressants

c)

Hallucinogens

d)

Inhalants

e)

Narcotics

90.

The chemical that causes addiction is __________________.

a)

arsenic

b)

carbon monoxide

c)

tar

d)

nicotine

91.

Which two statements are true of identical twins?

a)

They can be both boys, both girls, or a boy and a girl

b)

They can have different natural hair and eye colours

c)

They must be both girls or both boys

d)

They are made from one egg cell and one sperm cell

92.

Which two of the following actions could be potentially harmful to an unborn baby?

a)

Eating a healthy, balanced diet during pregnancy

b)

Smoking during pregancy

c)

Drinking excessive alcohol during pregnancy

d)

Exercising carefully during pregnancy

93.

What do we call the time from fertilisation until birth?

a)

development period

b)

gestation period

c)

creation period

d)

reproduction period

94.

What is the name of the organ which joins the placenta to the foetus?

a)

umbilical cord

b)

naval cord

c)

circulatory cord

d)

nervous cord

95.

During birth, which part of the female reproductive system has to widen to allow the baby to leave the uterus?

a)

cervix

b)

vagina

c)

oviduct

d)

ovary

96.

Why does the embryo attach to the uterine lining?

a)

So the sperm cells can not find it

b)

So it can flow out of the body during the period

c)

To keep itself cushioned while it grows

d)

To get oxygen and nutrients from it

97.
Because alcohol is a stimulant, it tends to pep you up.
a)
True
 Alcohol is a stimulant which therefore speeds up the body's functions
b)
False
Alcohol is a depressant. It slows body functions down.
98.
Following implantation, and until the 9th week of pregnancy, this would be called a(n)
a)
blastocyst
b)
zona
c)
embryo
d)
fetus
99.

In which period feotus will formed completely?

a)

week 1-4

b)

week 10-19

c)

week 20-37

d)

week 38-40

100.

How are identical twins formed?

a)

two eggs are fertilized

b)

Identical twins can't happen

c)

one egg splits into two