Free Printable Science grade 9

1.

A segment of DNA that codes for a trait

a)

gene

b)

centromere

c)

chromosome

d)

chromatid

2.

A version or variation of a gene

a)

trait

b)

gene

c)

allele

d)

DNA

3.

The alleles that an organism has/inherits are its

a)

genotype

b)

phenotype

c)

chromosome

d)

recessive

4.

The observable expression of a trait is its

a)

phenotype

b)

genotype

c)

chromosome

d)

allele

5.

When an organism has two of the same alleles, it is called

a)

homozygous

b)

heterozygous

c)

recessive

d)

dominant

6.

When an organism has two different alleles, it is called

a)

homozygous

b)

heterozygous

c)

recessive

d)

dominant

7.

Long strands of DNA are wrapped into

a)

DNA

b)

Chromosome

c)

Alleles

d)

Phenotype

8.

______ is the set of genes possessed by someone

a)

Karyotype

b)

Fingerprint

c)

Genotype

d)

Phenotype

9.

Humans have _______ pairs of chromosomes, for a total of _______ chromosomes.

a)

10, 20

b)

25, 100

c)

23, 46

d)

46, 92

10.

This type of allele is expressed whether there are one or two copies present.

a)

dominant

b)

recessive

c)

homozygous

d)

heterozygous

11.

B=Blonde Hair b=Brown Hair
If a person was BB they would have

a)

Blonde Hair

b)

Brown Hair

12.

B=Blonde Hair b=Brown Hair
If a person was Bb they would have

a)

Blonde Hair

b)

Brown Hair

13.

Recessive Traits show up

a)

Always

b)

Only when there are two

14.

Dominant Traits show up

a)

Always

b)

Only when there are two

15.

What tool can we use to predict what traits offspring will have?

a)

Punnett Square

b)

Wardlaw Rectangle

c)

Mendel Circle

d)

Preston Square

16.

Expressed only if NO dominant version is present

a)

homozygous

b)

heterozgyous

c)

allele

d)

recessive

17.

What are used to represent dominant alleles?

a)

numbers

b)

capital letters

c)

lowercase letters

d)

greek letters

18.

Which genotype(s) is homozygous?

a)

Aa

b)

AA

c)

aa

d)

Bb

19.

Which genotype(s) is homozygous?

a)

Aa

b)

Ff

c)

BB

d)

Bb

20.

Which genotype(s) is heterozygous?

a)

BB

b)

Bb

c)

Aa

d)

Ff

21.

Which genotype(s) is homozygous recessive?

a)

Pp

b)

Ff

c)

AA

d)

ff

22.

Which of the below is homozygous recessive?

a)

Gg

b)

qq

c)

AA

d)

FF

23.

Which of the below is homozygous dominant?

a)

Gg

b)

qq

c)

HH

d)

ff

24.

Which option shows the correct order of genetic material from largest to smallest?

a)

alleles > Genes > DNA > Chromosomes > Cell

b)

DNA > Chromosomes > Cell > Alleles > Genes

c)

cell > chromosomes > DNA > Genes > Alleles

d)

cell > Alleles > DNA > Chromosomes > Genes

25.

What is the possibility of producing rice with a long grain?

a)

100%

b)

75%

c)

50%

d)

25%

26.

Different forms of a gene

a)

Punnett square

b)

Gene

c)

Allele

d)

Homozygous

27.

Alleles whose trait always shows up when the allele is present

a)

Dominant alleles

b)

Recessive alleles

c)

Phenotype

d)

Genotype

28.

HEREDITY is the passing of physical characteristic from ___________ to _________.

(a)

29.

A number of how an event will occur.

a)

Possibility

b)

Probability

c)

Responsibility

d)

Ability

e)

Capability

30.

You create a punnett square to determine the probability of hair color being passed to offspring. Brown hair is dominant. Blond hair is recessive. Both parents have brown hair. Both parents are heterozygous. What is the probability that the offspring will also have brown hair?

a)

100%

b)

75%

c)

50%

d)

25%

31.

You create a punnett square to determine the probability of hair color being passed to offspring. Brown hair is dominant. Blond hair is recessive. Both parents have brown hair. Both parents are heterozygous. What is the probability that the offspring will have blond hair?

a)

100%

b)

75%

c)

50%

d)

25%

32.

What is the probability of heterozygous offspring?

a)

25%

b)

50%

c)

0%

d)

100%

33.

What allele combination should go in the missing box?

a)

AA

b)

Aa

c)

aa

d)

none of these

34.

If a heterozygous parent and a homozygous recessive parent mate, what percentage of their offspring will be dominant?

a)

25%

b)

50%

c)

75%

d)

100%

35.

Two brown eyed parents (Bb) have a baby. What is the chance the baby is blue eyed?

a)

0 %

b)

25%

c)

50%

d)

75%

36.

In pea plants, the tall allele is dominant to the short allele. What key would demonstrate this?

a)

Tall = T
Short = S

b)

Tall = T
Short = t

c)

Tall = t
Short = T

d)

Tall = TT
Short = tt

37.

What are the possible genotypes for this cross?

a)

TT = 25% Tt= 50% tt=25%

b)

all tall

c)

TT= 75% tt = 25%

d)

Tt = 100%

38.

What genotype would go in box 1?

a)

BB

b)

Bb

c)

bb

39.

In a certain species of plant, the color purple (P) is dominant to the color white (p).

According to the Punnett Square, what is the probability of an offspring being purple?

a)

25%

b)

0%

c)

100%

d)

50%

40.

Which of these Punnett squares represents a cross between a homozygous dominant parent and a heterozygous parent?

a)

b)

c)

d)

41.

What is the phenotype of the heterozygous parent in the punnett square?

a)

green

b)

yellow

c)

hybrid

d)

purebred

42.

Which box has a higher density?

a)

A

b)

B

c)

They both have the same density.

43.

What units are used to measure mass?

a)

g

b)

cm³

c)

g/cm³

d)

cm³/g

44.

A measure of the amount of matter in an object.

a)

mass

b)

volume

c)

density

d)

weight

45.

The amount of space an object takes up.

a)

mass

b)

volume

c)

density

d)

weight

46.

Density is defined as the mass in unit _________ ?

a)

Concentration

b)

Volume

c)

Weight

47.

The equation for calculating density is?

a)

density = volume/mass

b)

density = mass/volume

c)

density = mass x volume

d)

density = mass + volume

48.

What units are used to measure Density?

a)

cm³/g

b)

g

c)

g/cm³

d)

cm³

49.

If a cube has a mass of 50 grams and a volume of 10cm³, what is its density?

a)

10/50 = .2 cm³/g

b)

10 x 50 = 500 gcm³

c)

50/10 = 5 g/cm³

d)

not enough information

50.

A key is placed in a graduated cylinder with 60 cm³ of water. It makes the water level rise to 67 cm³. What is the volume of the key?

a)

60 cm³

b)

67 cm³

c)

127 cm³

d)

7 cm³

51.

Frank has an eraser. It has a mass of 4g, and a volume of 2cm³. What is its density?

a)

8 g/cm³

b)

2 g/cm³

c)

1/2 g/cm³

d)

24 g/cm³

52.

What is the volume of the rock?

a)

30cm³

b)

10cm³

c)

40cm³

d)

20cm³

53.

The density of this material is 2 g/cm³.
There are 24 cm³ Find the total mass.

a)

12 grams

b)

48 grams

c)

12 g/cm³

d)

48 g/cm³

54.

The masses and volumes of 5 objects are measured and the results are plotted on the shown graph. Which object has the highest density?

a)

Object B

b)

Object D

c)

Object C

d)

Object D

e)

Object A

55.

If you cut a wooden block in half, each half would have

a)

Half the density of the original piece

b)

Twice the density of the original piece

c)

The same density as the original piece

d)

No density at all

56.

A cube of volume $𝑉$ is made of a material which has a density 𝜌.If a smaller cube of volume $\frac{1}{4}V$ is cut from the larger cube, calculate the ratio of the density of the smaller cube to the density of what remains of the larger cube.

a)

$\frac{1}{3}$

b)

4

c)

$\frac{1}{4}$

d)

1

57.

A cuboid made of iron has a width of 12 cm, a length of 10 cm, a mass of 0.5 kg, and a density of $7.9\ g/cm^3$ .What is its height?

a)

3 cm

b)

7 cm

c)

2 cm

d)

10 cm

58.

Put the liquids in order from most dense to least dense?

a)

4, 3, 2, 1

b)

1, 2, 3, 4

c)

3, 4, 2, 1,

d)

4, 3, 1, 2

59.

Why do objects sink or float in H₂O?

a)

Because their densities are higher or lower than compared to water

b)

Because their densities are using gravity to pull down

c)

Because their densities are heavier or lighter

d)

Because their mass and volumes are equal

60.

What is the volume of Object X?

a)

10.0 cm³

b)

15.0 cm³

c)

20.0 cm³

d)

25.0 cm³

61.

Find the volume of this piece of brass.

a)

50 g

b)

10 cm

c)

6 cm³

d)

12 cm³

62.

Which has the greatest density?

a)

A

b)

B

c)

C

d)

All the same density

63.

Calculate the density of the cube.

a)

2 g/cm³

b)

4 g/cm³

c)

6 g/cm³

d)

8 g/cm³

64.

Use the density chart to identify the substance. If the substance has a volume of 5 cm³and a mass of 52.5g.

a)

lead

b)

aluminum

c)

silver

d)

water

65.

Which of the following natural resources are nonrenewable?

a)

Water

b)

Animals

c)

Natural gas

d)

Wind

66.

Fossil fuels are nonrenewable because...

a)

they are used to produce heat

b)

they take a long time to form

c)

they can be found underground

67.

These are all examples of...

a)

renewable resources

b)

nonrenewable resources

c)

fossil fuels

d)

alternative energy

68.

Coal is an example of a fossil fuel because....

a)

it is renewable energy that is mined from the Earth

b)

it is a nonrenewable resource that is replaced easily

c)

it is a nonrenewable resource that is mined from the Earth

d)

it is a clean source of energy

69.

This type of renewable energy converts the power of the wind to electricity.

a)

steam engines

b)

solar power

c)

wind turbines

d)

nuclear power

70.

Electricity produced by water power using large dams in a river

a)

Geothermal energy

b)

Hydroelectric energy

c)

Wind farm

d)

Biomass

71.

Inexhaustible energy resource that uses hot magma or hot, dry rocks below earth

a)

Hydroelectric energy

b)

Nuclear energy

c)

Geothermal energy

d)

Biomass

72.

In an endothermic reaction, heat is ,,,

a)

taken in

b)

given out

73.

What type of reaction occurs in a hand warmer

a)

exothermic

b)

endothermic

74.

If a chemical reaction is EXOTHERMIC, the temperature would....

a)

Stay the same

b)

Increase

c)

Decrease

75.

Bond breaking is referring to

a)

Exothermic

b)

Endothermic

76.

$6\ CO_2+\ 6\ H_2O\ +\ Energy\ \rightarrow\ C_6H_{12}O_6\ +\ 6\ O_2$

a)

endothermic reaction

b)

exothermic reaction

77.

A student mixed two chemicals to allow them to react. The temperature before the reaction was 25 ° C. The temperature after the reaction was 18° C. Which of the following is true?

a)

It is an exothermic reaction

b)

It is an endothermic reaction

78.

Is photosynthesis an exothermic or endothermic reaction?

a)

Endothermic

b)

Exothermic

c)

Neither

79.

If a chemical reaction is EXOTHERMIC, the temperature would....

a)

Stay the same

b)

Increase

c)

Decrease

80.

When iron nails get rusty, heat is released. What process is this?

a)

Exothermic

b)

Endothermic

Science grade 9

Total questions: 80

Worksheet time: 1hrs 27mins

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