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Y9 Red Week 1 Revision

Total questions: 69

Worksheet time: 1hrs 3mins

Name
Class
Date
1.

The physical appearance of an organism based on traits

a)

Genotype

b)

Phenotype

c)

Meiosis

d)

Genetics

2.

The genotypes codes for

a)

phenotype (physical trait)

b)

DNA

c)

allele

3.

The letters that represent different forms of a gene.

a)

Allele

b)

Mutation

c)

Trait

4.

Trait of an organism that can be HIDDEN by the dominant form of a trait.

a)

Recessive Trait

b)

Phenotype

c)

Allele

5.

Having two of the SAME alleles for a trait.

a)

Recessive Trait

b)

Homozygous

c)

Genotype

6.

The trait that overshadows and is expressed.

a)

Dominant Trait

b)

Phenotype

c)

Allele

7.

Having two DIFFERENT alleles for a trait.

a)

Recessive Trait

b)

Heterozygous

c)

Genotype

8.
What does the prefix hetero- in heterozygous mean?
a)
same
b)
different
c)
dating
d)
human
9.

In a heterozygous genotype, the ___________ allele takes over in the phenotype.

a)

recessive

b)

dominant

c)

both

10.

T - tall and t = short

In the Punnett square, what belongs in the missing square?

a)

tt

b)

Tt

c)

TT

11.

B = brown fur b = white fur

In the punnett square, what is the probability for white fur?

a)

0%

b)

25%

c)

50%

d)

75%

12.

Each one of the boxes on the Punnett square represents what probability of an offspring's genotype?

a)

25%

b)

1%

c)

10%

d)

0%

13.

What is ratio of the offspring from the cross shown will be homozygous recessive for the trait of tallness? T = tall t = short

a)

0 in 4

b)

1 in 4

c)

2 in 4

d)

4 in 4

14.
What allele combination should go in the missing box?
a)
AA
b)
Aa
c)
aa
d)
none of these
15.
What is the probability of heterozygous offspring?
a)
25%
b)
50%
c)
0%
d)
100%
16.
Dominant or recessive?
tt
a)
Dominant 
b)
Recessive
17.
What is a dominant allele?
a)
A trait that is always shown (capital letter)
b)
A trait that can be hidden (lower case letter)
c)
Alleles that are the same
d)
Alleles that are different
18.
This image shows a...
a)
Punnett Square
b)
Phenotype
c)
Genotype
d)
Dominant allele
19.
Which of the following genotypes is heterozygous?
a)
Bb
b)
BB
c)
bb
d)
B
20.
Which of the following genotypes is heterozygous?
a)
Bb
b)
BB
c)
bb
d)
B
21.
Which of the following genotypes is homozygous dominant?
a)
A
b)
Aa
c)
AA
d)
aa
22.

What is the charge of a group 1 metal ion?

a)

1+

b)

2+

c)

1-

d)

2-

23.

How does a group 1 metal atom form an ion?

a)

lose 1 electron

b)

lose 2 electrons

c)

gain 1 electron

d)

gain 2 electrons

24.

Which alkali metal has the symbol Cs

a)

Caesium

b)

Ceasium

c)

Calcium

d)

Sodium

25.

How many electrons do the alkali metals have in their outer shell?

a)

1

b)

2

c)

8

d)

7

26.
When an alkali metal reacts with water, the hydroxide produced dissolves to form and alkaline solution, True or False?
a)
True
b)
False
27.
Which of the following is NOT an alkali metal
a)
Li
b)
Cl
c)
K
d)
Cs
28.
What is the symbol equation for the reaction between sodium hydroxide and water?
a)
2Na + 2H2O → 2NaOH + H2
b)
Na + H2O → NaOH + H
c)
Na + H20 → NaCl + CO2
d)
2Na + 2H2O → 2NaH2 + O2
29.
What is formed when sodium reacts with water?
a)
sodium oxide and hydrogen
b)
sodium hydroxide and hydrogen
c)
sodium hydroxide and oxygen
d)
sodium hydroxide and carbon dioxide
30.
Which of the following is the most reactive in water?
a)
Lithium
b)
Sodium
c)
Potassium
31.
Alkali metals are found in which group of the periodic table?
a)
Group 1
b)
Group 2
c)
Group 7
d)
group 8 
32.
A human usually has ______ chromosomes in their body cells.
a)
6
b)
22
c)
4
d)
46
33.
How many daughter cells are produced at the end of mitosis?
a)
1
b)
2
c)
3
d)
4
34.
How many chromosomes are in the new cells of mitosis?
a)
46
b)
23
35.
The purpose of sexual reproduction and meiosis is to form ________ cells.
a)
body
b)
sex
c)
somatic
d)
brain
36.
Before mitosis or meiosis can begin, DNA must go through Interphase. This is when...
a)
DNA replicates
b)
DNA splits
c)
DNA forms chromosomes
d)
Chromosomes cross over
37.
What process, and which type of resulting cells are represented?
a)
mitosis, gametes
b)
mitosis, body cells
c)
meiosis, gametes
d)
meiosis, body cells
38.
Meiosis makes sperm and egg cells. In humans, sperm and egg cells each have _____ chromosomes. Therefore a fertilized human egg cell (sperm and egg cell combined) would create a cell with _____ chromosomes.
a)
23, 46
b)
46, 23
c)
2, 4
d)
50, 100
39.

The products of meiosis are genetically...

a)

different.

b)

identical.

40.

Identify a purpose of mitosis. Select all that apply.

a)

Produce gametes for reproduction.

b)

Repair damaged or dead cells.

c)

Reduce the chromosome number.

d)

Growth of organisms from birth to adulthood.

41.

Suppose a diploid animal cell has 16 chromosomes. How many chromosomes would a sex cell of this animal have

a)

16

b)

8

c)

32

d)

23

42.

All cells in your body have genetic information (the code found within DNA). Sex cells (egg and sperm) have ________________ the amount of genetic information when compared to the body cells in your body

a)

twice

b)

equal

c)

half

d)

four times

43.

Most human cells have 46 chromosomes (23 pairs). If egg and sperm cells each had this number of chromosomes when they combine during fertilization there would be problems. Therefore, egg and sperm cells have _______________________.

a)

half the amount of chromosomes as compared to other cells.

b)

twice the amount of chromosomes when compared to other cells.

c)

four times the amount of chromosomes when compared to other cells.

d)

a quarter of the amount of chromosomes when compared to other cells.

44.

A 2n cell of a bat has 44 chromosomes, how many chromosomes will you find in one of his gametes

a)

23

b)

22

c)

44

d)

88

45.

What is the left part of a chemical equation called?

2H2 + O2 ---> 2H2O

a)

Reactants

b)

Yields

c)

Products

d)

Chemical equation

46.

What is the right part of a chemical equation called?

2H2 + O2 ---> 2H2O

a)

Reactants

b)

Yields

c)

Products

d)

Chemical Equation

47.

What is the total number of atoms present in 5Na3PO4?

a)

5

b)

55

c)

40

d)

8

48.

How many Mn atoms are found in the following compound?

2MnO4

a)

1

b)

2

c)

4

d)

8

49.

What is the little number after an element in a chemical equation called?

Example: H2

a)

Coefficient

b)

Atom

c)

Subscript

d)

Equation

50.

Is the following equation balanced?

Al + O2 ---> 2Al2O3

a)

YES

b)

NO

51.

What is the number before a chemical formula called?

Example: 2H2 + O2 ---> 2H2O

a)

Coefficient

b)

Atom

c)

Subscript

d)

Equation

52.

Which of the following equations are correctly balanced?

a)

12CO2 + H2O ---> C6H12O6 + O2

b)

CO2 + H2O ---> 3C6H12O6 + O2

c)

CO2 + 9H2O ---> C6H12O6 + O2

d)

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

53.

Balance this equation:

H2 + Cl2 ---> HCl

a)

It is balanced.

b)

H2 + Cl2 ---> 2HCl

c)

3H2 + Cl2 ---> 6HCl

d)

H2 + 3Cl2 ---> 6HCl

54.

Balance this equation:

HgO ---> 2Hg + O2

a)

It is balanced.

b)

2HgO ---> 2Hg + O2

c)

2HgO ---> Hg + O2

d)

HgO ---> Hg + 2O2

55.

Complete the sentence.


During a chemical reaction, atoms ________.

a)

can appear

b)

can disappear

c)

get rearranged

d)

stop moving and vibrating

56.
What is a coefficient?
a)
The small number on the right of the chemical symbol.
b)
The large number in front of a chemical formula.
c)
The number in between the chemical symbols.
d)
The number behind a chemical formula.
57.

What is the Law of Conservation of Mass?

a)

It states that matter cannot be created or destroyed.

b)

It states that energy cannot be created or destroyed.

c)

It states that matter can be created or destroyed.

d)

It states that sound can be created or destroyed.

58.
How many HCl molecules do you need to balance this equation? 
Mg +  __HCl --->  MgCl2 + H2
a)
1
b)
2
c)
3
d)
4
59.

What are the numbers that you CANNOT change in a chemical equation? 

a)
Coefficient
b)
Products
c)
Reactants
d)

Subscripts

60.

Balance the following equation:

___ H2+ ___ O2→___ H2O

a)

1, 1, 3

b)

2, 2, 2

c)

1, 2, 1

d)

2,1, 2

61.

What is the right ratio of chemicals for the balanced chemical equation?__Na + __H2O --> __NaOH + __H2

a)
2,2 --> 2,1
b)
4,4 --> 4,1
c)
1,2 --> 2,4
d)
1,2 --> 2,1
62.

What is the right ratio of chemicals for the balanced chemical equation?

__Ca + __H2O --> __Ca(OH)2 + __H2

a)
2,1 --> 2,1
b)
1,2 --> 1,1
c)
1,2 --> 2,4
d)
1,2 --> 2,1
63.

What is the right ratio of chemicals for the balanced chemical equation?

__CO + __Fe2O3--> __Fe + __CO2

a)
3,1 --> 2,3
b)
3,2 --> 1,1
c)
3,2 --> 2,4
d)
3,2 --> 2,1
64.
What is the right ratio of chemicals for the BCE (Balanced Chemical Equation)?__CH4 + __O2 --> __CO2+ __H2O
a)
2,1 --> 2,1
b)
1,2 --> 1,1
c)
1,2 --> 1,2
d)
1,2 --> 2,1
65.

What is the right ratio of chemicals for the balanced chemical equation?

__AgNO3 + __H2S --> __Ag2S+ __HNO3

a)
2,1 --> 1,2
b)
1,2 --> 1,1
c)
1,2 --> 1,2
d)
1,2 --> 2,1
66.

What is the right ratio of chemicals for the balanced chemical equation?

__H2 + __S --> __H2S

a)
1,1 --> 1
b)
2,2 --> 2
c)
1,2 --> 1
d)
1,2 --> 2
67.

What is the right ratio of chemicals for the balanced chemical equation?

__H2SO3 + __KOH--> __H2O+ __K2SO3

a)
2,1 --> 2,1
b)
1,2 --> 1,1
c)
1,2 --> 1,2
d)
1,2 --> 2,1
68.

What is the right ratio of chemicals for the balanced chemical equation?

__MnO2 + __HCl --> __MnCl2 + __H2O __Cl2

a)
4,1 --> 2,1,2
b)
1,2 --> 1,1,4
c)
1,4 --> 1,2,1
d)
1,4 --> 2,2,1
69.

What is the right ratio of chemicals for the balanced chemical equation?

__FeCl3 + __Ca(OH)2 --> __Fe(OH)3 + __CaCl2

a)
4,3--> 2,1
b)
3,2 --> 3,1
c)
2,3 --> 2,2
d)
2,3 --> 2,3

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