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Worksheets

BCP7 SYI

Total questions: 75

Worksheet time: 2hrs 29mins

Name
Class
Date
1.
Diffusion is the movement of molecules from an area of _____ concentration to an ______ concentration
a)
High, low
b)
Low, high
c)
Low, low,
d)
High, high
2.

What is DIFFUSION?

a)
b)
c)
d)
3.

Which is the correct equation for aerobic respiration in humans?

a)

Glucose + Oxygen -> Carbon Dioxide + Water

b)

Glucose + Oxygen -> Carbon Dioxide

c)

Glucose -> Carbon Dioxide + Water

d)

Glucose -> Lactic Acid

4.

Where the exchange of gases actually occur?

a)

Bronchi

b)

Trachea

c)

Oxygen

d)

Alveoli

5.

The way gases move between the capillaries and alveoli is called...?

a)

Osmosis

b)

Diffusion

c)

Atmosphere

d)

Pressure

6.

Which of these are adaptations of alveoli?

a)

Long, finger-like structure increases surface area

b)

The membrane is only one cell thick which means gases have a short diffusion distance

c)

Lots of tiny capillaries so gases can pass easily into the blood stream

d)

Moist

e)

Lots of enzymes so there are tiny molecules suitable for diffusion

7.
Label D is...
a)
Trachea
b)
Diagphragm
c)
Bronchus
d)
Alveolus
8.

Respiration takes place in

a)

the cells

b)

the lungs

c)

the heart

d)

the brain

9.

Which organism would have the smallest SA:V

a)

mouse

b)

human

c)

bacteria

d)

ameoba

10.

The gas which the body exhales as waste is called...

a)

carbon dioxide

b)

argon

c)

oxygen

d)

nitrogen

11.

Which of these is a way in which alveoli are adapted to work well?

a)

They are very large

b)

They have thick walls

c)

They have thin walls

d)

There are only a few of them

12.

What is the purpose of transport systems in humans?

a)

To increase the surface area to volume ratio

b)

To decrease the surface area to volume ratio

c)

To increase the volume

d)

To transport substances to the parts of the body that need them

13.

What is the effect of diffusion distances on larger organisms?

a)

Diffusion becomes faster

b)

Diffusion becomes slower

c)

Diffusion remains the same

d)

Diffusion stops

14.

Protease enzymes break down protein into...

a)

Fatty Acids

b)

Amino Acids

c)

Stomach Acid

d)

Muscles

15.
Based on the graph, what is the optimal temperature for this enzyme? 
a)
15oC
b)
40oC
c)
30oC
d)
35oC
16.

Fats are broken down by lipase into...

a)

Glycerol and Fatty Acids

b)

Lard

c)

Amino Acids

d)

Starch

17.
Which of the following conclusions can be drawn from this graph?
a)
The optimum pH of the enzyme is 6.6.
b)
The optimum pH of the enzyme is 5.8
c)
The enzyme’s activity increases as pH increases 5.0 to 9.0
d)
The enzyme’s activity is greater around pH of 8.0 .
18.
The graph shows how the activity of an enzyme changes over a range of pH values. Which of the following conclusions can be drawn from this graph?
a)
pepsin works best at a pH near 2
b)
pepsin works best at a pH of 9
19.
Which substrate would this enzyme catalyze?
a)
Δ
b)
σ
c)
∅
d)
μ
20.
What makes an enzyme substrate specific?
a)
Size
b)
Shape
c)
Name
d)
Location it is found in
21.
Enzymes need certain environmental conditions in order to function properly.  What happens when enzymes are heated to a high temperature?
a)
they die
b)
they denature
c)
they change their amino acid sequence
d)
they work better
22.
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
23.

Which letter represents the Product ?

a)

B

b)

C

c)

D

d)

E

24.

This organ pumps blood through your body.

a)

heart

b)

artery

c)

vein

d)

capillaries

25.
Carbon dioxide is considered a _________________
a)
food
b)
waste
c)
energy
d)
fun party favor
26.

Which light bulb(s) will never light up?

a)

A

b)

B, C, D

c)

A, B, C, D

d)

None

27.

What is used to measure electric current?

a)

Voltmeter

b)

Ammeter

c)

Wattmeter

d)

pH meter

28.

What type of circuit is this?

a)

Series

b)

Parallel

c)

Simple

29.

The unit for current is:

a)

Volt

b)

Ohm

c)

Electron

d)

Amp

30.

Which statement is true?

a)

The light bulb will light up because the circuit is complete.

b)

The light bulb will light up because the circuit is broken.

c)

The light bulb will not light up because the circuit is complete.

d)

The light bulb will not light up because the circuit is broken.

31.

What does an ammeter measure?

a)

Coulombs

b)

Current

c)

Charge

d)

Amperes

32.

Complete the equation: ________ = potential difference / resistance

a)

Charge

b)

Current

c)

Resistance

d)

Coulomb

33.

Calculate the voltage across the 8Ω resistor.

a)

4 V

b)

16 V

c)

9 V

d)

4.5 V

34.

Examine the circuits in the diagram. In which circuit will the bulb be brighter?

a)

Circuit A

b)

Circuit B

c)

Both circuits, the bulbs will have the same brightness.

35.

If the voltage is increased and the resistance stays the same, the current will:

a)

Increase

b)

Decrease

c)

Stay the same

d)

X

36.

Based on the graph, which of the following would be true regarding the relationship between voltage and current?

a)

As voltage increases, current decreases.

b)

Voltage will not affect current.

c)

As voltage decreases, current increases.

d)

As voltage increases, current also increases.

37.

Which best describes a parallel circuit?

a)

Electricity flows along one pathway.

b)

The flow of electricity comes from one source. 

c)

Electricity flows along more than one pathway. 

d)

The flow of electricity comes from more than one source. 

38.

What does a voltmeter measure?

a)

potential difference

b)

resistance

c)

charge

d)

current

39.

How many volts are produced by three cells of 3 V each in series?

a)

3V

b)

1.5V

c)

9V

d)

27V

40.

A circuit contains two resistors in series. One is 5 ohms and the other is 10 ohms. What is the total resistance of the circuit?

a)

5 ohms

b)

10 ohms

c)

15 ohms

41.

A circuit contains two resistors in series. One is 5 ohms and the other is 10 ohms. What is the total resistance of the circuit?

a)

5 ohms

b)

10 ohms

c)

15 ohms

42.

If the cell above has a potential difference of 8V, what is the potential difference across one bulb?

a)

8V

b)

4V

c)

16V

d)

2V

43.

If the cell in the circuit above has a potential difference of 8V, what is the potential difference across one of the bulbs?

a)

8V

b)

4V

c)

16V

d)

2V

44.

Look at figure 4. Ammeters A2 and A3 read the same value at 0.4 Amps. What is the reading on Ammeter A1?

a)

0.4A

b)

0.2A

c)

0.8A

45.

Arrows are close together on a force field when the force is

a)

stronger

b)

weaker

c)

opposite

46.

What THREE ways are electromagnets different from permanent magnets?

a)

they can be turned off and on

b)

they can increase in strength by increasing the current in the wire

c)

they are smaller in size

d)

they can change which is the north and south pole

47.
  You can make an electromagnet stronger by: having a __________________ current in the wire
a)
smaller
b)
larger
c)
greener
d)
water
48.
What is the difference between a conductor and an insulator?
a)
An insulator allows electricity to flow through it easily and a conductor does not
b)
A conductor allows electricity to flow through it easily and an insulator does not.
c)
An insulator is magnetic and a conductor is not
d)
A conductor is magnetic and an insulator is not
49.

Which electromagnet will pick up LESS paper clips?

a)

A

b)

B

50.

Iron + copper oxide =

a)

Iron + copper oxide

b)

Iron oxide + copper oxide

c)

Iron oxide + copper

d)

Magic

51.

Which of the following is more reactive?

a)

Calcium

b)

Potassium

c)

Zinc

d)

Magnesium

52.

Which one of the following combinations result in a displacement reaction?

a)

Iron with magnesium chloride

b)

magnesium with iron chloride

c)

Iron with Zinc Sulphate

d)

gold with silver nitrate

53.

What will the products of this reaction be?

calcium + zinc nitrate --------->

a)

Calcium + zinc nitrate

b)

Zinc + calcium nitrate

c)

there will be no reaction

d)

Zinc + calcium chloride

54.

What is the product of the reaction between magnesium and copper sulphate?

a)

Magnesium sulphate + copper

b)

Magnesium + copper

c)

Magnesium oxide + copper sulphate

d)

No reaction

55.
What colour is universal indicator in a strong alkali?
a)
Green
b)
Orange
c)
Purple
d)
Red
56.
What colour is universal indicator in a neutral solution?
a)
Green
b)
Orange
c)
Purple
d)
Red
57.
The pH scale is a range from:
a)
1-7
b)
0-14
c)
1-14
d)
1-20
58.
A(n) ______ is a substance with a pH less than 7
a)
Acid
b)
Alkaline
c)
Base
d)
Buffer
59.
A solution with a pH of 3.6 would be...
a)
Acid
b)
Base
c)
Neutral
d)
Acid and Base
60.

Acid + Alkali --> Salt + Water

a)

neutralization reaction

b)

synthesis

c)

decomposition

d)

single displacement

61.
A neutralization reaction will always produce...
a)
water & salt
b)
water
c)
salt
d)
water & carbon
62.

Name the salt produced from the reaction of calcium hydroxide and hydrochloric acid

(a)  

63.

Name the salt produced from the reaction of nitric acid and lithium hydroxide

(a)  

64.
Acid + Metal --> ?
a)
Salt + Water
b)
Salt + Hydrogen
c)
Salt
d)
Hydrogen
65.
Magnesium + sulphuric acid --> ?
a)
magnesium sulfate + water
b)
magnesium sulfate + hydrogen
c)
magnesium chloride + hydrogen
d)
magnesium chloride + water
66.
Zinc + nitric acid --> ?
a)
zinc sulfate + water
b)
zinc sulfate + hydrogen
c)
zinc nitrate + hydrogen
d)
zinc chloride + water
67.

When a metal reacts with water what gas is produced?

a)

Nitrogen

b)

Carbon dioxide

c)

Hydrogen

d)

Helium

68.

When a metal reacts with an acid what gas is made?

a)

Hydrogen

b)

Oxygen

c)

Nitrogen

d)

Helium

69.
What letter represents the energy of the products?
a)
A
b)
B
c)
C
d)
D
70.
What letter represents the activation energy?
a)
A
b)
B
c)
C
d)
D
71.

Magnesium + hydrochloric acid-->

a)

Magnesium chloride + water

b)

Magnesium chloride + hydrogen

c)

Magnesium hydrochloride + hydrogen

d)

Magnesium chloride + water + carbon dioxide

72.

Calcium carbonate + hydrochloric acid -->

a)

Calcium chloride + hydrogen

b)

Calcium choride + water

c)

Calcium chloride + carbon dioxide + water

d)

Calcium sulfate + carbon dioxide + water

73.

Which of the following is a common characteristic of a precipitation reaction?

a)

A) Release of energy

b)

B) Formation of a gas

c)

C) Formation of a precipitate

d)

D) Decrease in temperature

74.

What is the solid formed in a precipitation reaction called?

a)

A) Residue

b)

B) Catalyst

c)

C) Precipitate

d)

D) Solvent

75.
What type of reaction is this?
a)
Endothermic
b)
Exothermic

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