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Holiday Assignment

Total questions: 75

Worksheet time: 39mins

Name
Class
Date
1.

Name the type of tooth labelled A

(a)  

2.

Where in the jaw would you find tooth C?

a)

Very front of the mouth

b)

Back of the jaw

c)

Top row of teeth only

d)

Bottom row of teeth only

3.

What is organ R?

(a)  

4.

What is organ L?

(a)  

5.

What is organ J?

(a)  

6.

Define the term ingestion

a)

The movement of nutrients from the digestive system into the blood

b)

The removal of undigested food from the body

c)

The breaking down of large insoluble molecules into small soluble molecules

d)

The taking in of nutrients.

7.

Define the term digestion

a)

The movement of nutrients from the digestive system into the blood

b)

The removal of undigested food from the body

c)

The breaking down of large insoluble molecules into small soluble molecules

d)

The taking in of nutrients.

8.

What gland produces amylase?

a)

Liver

b)

Gall bladder

c)

Salivary gland

d)

stomach

9.

Define the term mechanical digestion

a)

The breaking down of large food molecules by the use of enzymes.

b)

The physical break down of food done by the teeth or the muscles in the stomach.

10.

What word is used to describe food which has been mixed with saliva.

a)

Chyme

b)

Bolus

c)

Churning

d)

Mucus

11.

What is the pH in the stomach?

a)

pH 1-2

b)

pH 3-4

c)

pH 11-12

d)

ph 13-14

12.

What part of the small intestine does the digestion of nutrients finish?

a)

Ilium

b)

Duodenum

c)

Gall Bladder

d)

Liver

13.

What is absorbed into the blood from the large intestine?

a)

Digested nutrients

b)

Fibre

c)

Water

d)

Chyme

14.

What is the role of bile in digestion?

a)

Emulsifies fat

b)

Kills bacteria

c)

Acidifies stomach acid

d)

Turns food into a bolus

15.

What is the job of pre molars?

a)

help you bite off and chew pieces of food

b)

These teeth are used for tearing and ripping food

c)

These help you crush and grind food

16.

What is the job of the pancreas in digestion?

a)

Produces acid

b)

Produces bile

c)

Produces digestive enzymes

d)

Produces chyme

17.

Where does absorption occur?

a)

Stomach

b)

Duodenum

c)

Ilium

d)

Liver

18.

Why is the digestive system important?

a)

It transports blood that cells need.

b)

It provides oxygen that cells need.

c)

It provides nutrients that cells need to produce energy

d)

It carries carbon dioxide and oxygen away from the body.

19.

What TWO process take place in the mouth?

a)

The adding of saliva

b)

Tongue breaks down food

c)

Chewing to break down food

d)

Acid is added

20.

Chemical digestion takes place in?

a)

stomach and mouth

b)

stomach, mouth, and intestines

c)

mouth and intestines

21.

Type of digestion in the stomach:

a)

Mechanical

b)

Chemical

c)

Both

22.

Which part of the digestive system is number 6?

a)

oesophagus

b)

large intestine

c)

small intestine

d)

liver

23.
Which part of the digestive system is number 2?
a)
esophagus
b)
stomach
c)
small intestine
d)
liver
24.

Waste products are food that

a)

cannot be digested

b)

the body cannot use

c)

tastes bad

d)

have been broken down

25.

The intestines take the _____ from the food.

a)

nutrients

b)

tongue

c)

teeth

26.

What's this part of the Digestive System?

a)

Oesophagus

b)

Pharynx

c)

Mouth

d)

Stomach

27.
Which part of the digestive system is number 4?
a)
esophagus
b)
large intestine
c)
small intestine
d)
liver
28.

Which example best shows structures that make up the digestive system in the human body?

a)

heart, blood, vessels

b)

nose, trachea, lungs

c)

brain, spinal cord, nerves

d)

esophagus, stomach, intestines

29.
Which part of the digestive system is number 5?
a)
esophagus
b)
large intestine
c)
small intestine
d)
liver
30.

Why is the digestive system important?

a)

It transports blood that cells need.

b)

It provides oxygen that cells need.

c)

It provides nutrients that cells need to produce energy

d)

It carries carbon dioxide and oxygen away from the body.

31.

Which example best shows structures that make up the digestive system in the human body?

a)

heart, blood, vessels

b)

nose, trachea, lungs

c)

brain, spinal cord, nerves

d)

esophagus, stomach, intestines

32.

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

a)

vacuole

b)

stomata

c)

chlorophyll

d)

cytoplasm

33.

Which of the following statements is/are correct?

(i) All green plants can prepare their own food.

(ii) Most animals are autotrophs.

(iii) Carbon dioxide is not required for photosynthesis.

(iv) Oxygen is liberated during photosynthesis.

Choose the correct answer from the options below:

a)

( i) and (iv)

b)

(ii) only

c)

(ii) and (iii)

d)

(i) and (ii)

34.

The term that is used for the mode of nutrition in yeast, mushroom and bread-mould is

a)

autotrophic

b)

parasitic

c)

saprophytic

d)

symbiotic

35.

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

36.

Which of the following raw material is available in the air for photosynthesis?

a)

oxygen

b)

carbon dioxide

c)

nitrogen

d)

hydrogen

37.

Two organisms are good friends and live together. One provides shelter, water, and nutrients while the other prepares and provides food. Such an association of organisms is termed as

a)

saprophyte

b)

parasite

c)

autotrophs

d)

symbiosis

38.

which gas is produced during photosynthesis.

a)

carbon dioxide

b)

oxygen

c)

hydrogen

d)

nitrogen

39.

What protects Stomata and helps it in opening and closing?

a)

Guard Cells

b)

Leaf

c)

Stem

d)

Carbon Dioxide

40.

Which bacteria is there in the roots of the plants to convert atmospheric nitrogen to its solid form?

a)

Coronovirus

b)

Nipha Virus

c)

Treponama

d)

Rhizobium

41.
Which organelle in the plant cell performs photosynthesis?
a)
Chloroplast
b)
Mitochondria
c)
Nucleus
d)
Cytoplasm
42.

Water and minerals are absorbed through...

a)

flowers.

b)

leaves.

c)

roots.

43.
Which plant part collects the sun's energy and makes food?
a)
Leaf
b)
Stem
c)
Roots
d)
Flower
44.

Guard cells of stoma are (stomata ki guard cells kesi hoti hei)

a)

irregular in shape

b)

convex in shape

c)

long and cylindrical in shape

d)

kidney-shaped

e)

Heat - shaped

45.
The lamina is broad to increase surface area for maximum absorption of light energy.
a)
True
b)
False
46.
There are more chloroplasts in the palisade mesophyll cells than in spongy mesophyll cells.
a)
True
b)
False
47.

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

a)

vacuole

b)

stomata

c)

chlorophyll

d)

cytoplasm

48.

Which of the following statements is/are correct?

(i) All green plants can prepare their own food.

(ii) Most animals are autotrophs.

(iii) Carbon dioxide is not required for photosynthesis.

(iv) Oxygen is liberated during photosynthesis.

Choose the correct answer from the options below:

a)

( i) and (iv)

b)

(ii) only

c)

(ii) and (iii)

d)

(i) and (ii)

49.

The term that is used for the mode of nutrition in yeast, mushroom and bread-mould is

a)

autotrophic

b)

parasitic

c)

saprophytic

d)

symbiotic

50.

Which of the following statements is/are correct?

(i) All green plants can prepare their own food.

(ii) Most animals are autotrophs.

(iii) Carbon dioxide is not required for photosynthesis.

(iv) Oxygen is liberated during photosynthesis.

Choose the correct answer from the options below:

a)

(a) (i) and (iv)

b)

(b) (ii) only

c)

(c) (ii) and (iii)

d)

(d) (i) and (ii)

51.

Rhizobium is an example of

a)

(a) Symbiosis

b)

(b) Parasites

c)

(c) Insectivorous

d)

(d) none of these

52.

Iodine used to detect presence of starch. It gives starch

a)

(a) red colour

b)

(b) green colour

c)

(c) blue-black colour

d)

(d) colourless appearance

53.

Where in a plant cell does photosynthesis take place

a)

Palisade cells

b)

Chlorophyll

c)

Chloroplasts

d)

Vacuole

54.

Which of these are limiting factors for photosynthesis? Choose 3 answers.

a)

Light intensity

b)

CO2 concentration

c)

Temperature

d)

Light

e)

CO2 levels

55.

Which of these is the correct equation for photosynthesis?

a)

6O2 + C6H12O6 --> 6CO2 + 6H2O

b)

6O2 + 6CO2 --> C6H12O6 + 6H2O

c)

6CO2 + 6H2O --> 6O2 + C6H12O6

d)

6CO2 + 6H2O --> O2 + C6H12O6

56.

A student wanted to see if covering a leaf in foil would stop it from producing starch. Why should the student put the plant in a dark cupboard for 48 hours before returning it to the light and starting the experiment?

a)

To make the results reliable

b)

So that the plant would photosynthesise faster when returned to the light

c)

So that any starch already in the leaf was used up by the plant

57.

Which of the following is not a micro-nutrient used by plants?

a)

Zinc

b)

Copper

c)

Manganese

d)

Potassium

58.
Why does temperature have an effect on the rate of photosynthesis?
a)
Higher temperature allows carbon dioxide to diffuse into the leaves faster.
b)
Higher temperature allows water to be transported to the leaves faster.
c)
Higher temperature allows the stomata to open wider.
d)
Higher temperature allows the enzymes to function better.
59.
Increasing humidity decreases the rate of transpiration as the water potential of the surrounding is higher than the sub-stomatal spaces. 
a)
True
b)
False
60.
Name the limiting factor at X.
a)
Light intensity
b)
Temperature
c)
Carbon dioxide concentration
d)
Water
61.

Enzymes are an example of

a)

lipids

b)

carbohydrates

c)

protein

d)

nucleic acid

62.

What is a substance called if it speeds up a chemical reaction?

a)

reusable

b)

catalyst

c)

specific

d)

fragile

63.

Each enzyme only has 1 substrate that will fit its active site.  What is this called?

a)

reusable

b)

catalyst

c)

fragile

d)

specific

64.

In the diagram, what is letter A?

a)

product

b)

enzyme-substrate complex

c)

substrate

d)

active site

65.

Letter D...

a)

enzyme

b)

active site

c)

substrate

d)

products

66.

Letter B...

a)

substrate

b)

active site

c)

enzyme

d)

products

67.

Letter C...

a)

products

b)

substrate

c)

enzymes

d)

active site

68.

Letter E...

a)

active site

b)

products

c)

substrate

d)

enzyme

69.

An enzyme speeds up a reaction by

a)

raising the activation energy

b)

lowering the activation energy

c)

releasing energy

d)

absorbing energy.

70.

What happens when enzymes are heated to a high temperature?

a)

The shape of the enzyme are changed and it denatures

b)

The enzymes die

c)

The enzymes' amino acid sequence changes

d)

The enzymes remain the same

71.

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

72.

Absorbs energy

a)

endothermic reaction

b)

exothermic reaction

73.

Releases energy

a)

endothermic reaction

b)

exothermic reaction

74.

Substances that are changed during a chemical reaction

a)

reactants

b)

products

75.

Slows down reaction

a)

temperature

b)

pH

c)

cataysts

d)

competitive inhibitor

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