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7th Science Midterm Review

Total questions: 45

Worksheet time: 27mins

Name
Class
Date
1.

Which Nitrogen Base pair does not belong in DNA.

a)

Adenine

b)

Thymine

c)

Uracil

d)

Guanine

2.
Nuclear membrane forms around chromosomes and begins to separate.
a)
Anaphase
b)
Telophase
3.

Which is Metaphase?

a)

A

b)

E

c)

C

d)

F

4.

The process by which the nuclear material is divided equally between two new cells

a)

mitosis

b)

cancer

c)

spindle

d)

centromere

5.
A chromosome is a single, long DNA molecule in a compact formation
a)
True
b)
False
6.
Where does a cell contain it's genetic material?
a)
nucleus
b)
nucleolus
c)
cytoskeleton
d)
golgi
7.
What is the first phase of Mitosis?
a)
Prophase
b)
Metaphase
c)
Anaphase
d)
Telophase
8.
DNA will condense into...
a)
Centromeres
b)
Chromosomes
c)
Nuclei
d)
Spindle fibers
9.
Structure A refers to the _____.
a)
chromatid
b)
chromosome
c)
centromere
10.
Before cells can divide, what must be copied?
a)
mitochondria
b)
cytoplasm
c)
DNA
d)
Cell Wall
11.
These structures pull the spindle fibers and attached chromosomes to opposite ends of the cell.
a)
Spindle fiber
b)
Centriole
c)
Nucleus
d)
Centromere
12.
Name the phase:
a)
Prophase
b)
Metaphase
c)
Anaphase
d)
Telophase
13.
Does meiosis reproduce asexually or sexually?
a)
sexually
b)
asexually
14.
Is mitosis sexual or asexual reproduction?
a)
asexual
b)
sexual
15.
About how long does interphase take?
a)
10%
b)
100%
c)
none of these
d)
90%
16.
Wat is the final result of meiosis
a)
4 daughter cells/different
b)
exact copy
c)
i don't care
d)
none of theses
17.
How many daughter cells are produced in mitosis?
a)
4 new cells
b)
2 new cells
c)
One new cell
d)
none of these
18.
How many times does the cell divide in mitosis?
a)
Once (PMAT)
b)
4 times
c)
2 times
d)
none of these
19.
Why do cells do mitosis?
a)
To meet egg and sperm
b)
To repair the cell
c)
to help grow
d)
Both the 2 and 3 option
20.

Which of the following will only show if two alleles are present?

a)

a dominant trait

b)

heterozygous

c)

a recessive trait

d)

hybrid

21.
Heredity is the passing of traits from _____________________ to _____________________
a)
predators to prey
b)
water to rain
c)
parents to offspring
d)
fungi to protists
22.
If a child has red hair, they inherited a certain _______________ from their parents.
a)
ratio
b)
trait
c)
probability
d)
sex chromosome
23.
One trait that is ALWAYS present and causes the other traits to disappear is a ________________________
a)
recessive trait
b)
aggressive trait
c)
absent trait
d)
dominant trait
24.
Offspring receives two sets of _____________ (one from each parent)
a)
blue jeans
b)
genes
c)
machines
d)
pedigree
25.
_____________________ is the appearance of an organism, or how it looks
a)
phenotype
b)
ratio
c)
recessive trait
d)
heredity
26.
A ________________________ is used to predict the possible genotype from certain parents
a)
Mendel Grid
b)
Genetic Tic Tac Toe
c)
Punnett Square
d)
Pedigree Plot
27.
Dominant or recessive?
tt
a)
Dominant 
b)
Recessive
28.
Dominant or recessive?
Dd
a)
Dominant
b)
recessive
c)
neither
d)
homozygous
29.
one of the alternative forms of a gene that governs a characteristic, such as hair color
a)
allele
b)
gene
c)
trait
d)
DNA
30.
an organism's appearance or other detectable characteristic
a)
genotype
b)
phenotype
c)
genetics
d)
heterozygous
31.
You get your genes from:
a)
Department Store
b)
Parents
c)
Aunt
d)
Neighbor
32.
Homozygous or heterozygous?
BB
a)
Homozygous
b)
Heterozygous
33.
Which of the following pairs is homozygous dominant?
a)
Hh
b)
pp
c)
HH
d)
aa
34.
Which of the following is heterozygous?
a)
Hh
b)
gg
c)
HH
d)
GG
35.
Dominant alleles are represented by a:
a)
Male gene
b)
lowercase letter
c)
recessive trait
d)
capital letter
36.
DNA holds the code for
a)
lipids
b)
carbohydrates
c)
protein
d)
sugar
37.
Which component of DNA determines the traits of an organism? 
a)
Nitrogen Bases
b)
Sugar-Phosphate Backbone
c)
Hydrogen bonds
38.
DNA has a _____________ structure. 
a)
double helix
b)
single strand
c)
ring 
d)
chain
39.
In DNA, Adenine pairs with ___________. 
a)
Guanine
b)
Cytosine
c)
Thymine
d)
Uracil
40.

Deletion

a)

the set of observable characteristics of an individual

b)

a DNA segment in a chromosome that is a copy of another segment

c)

the loss or excision of a section of genetic code, or its product

d)

the changing of the structure of a gene, resulting in a variant form

41.

Substitution

a)

a reaction causing a change from one optically active configuration to the opposite

b)

a DNA segment in a chromosome that is a copy of another segment

c)

the loss or excision of a section of genetic code, or its product

d)

the action of replacing someone or something with another person or thing

42.

Insertion

a)

the action of replacing someone or something with another person or thing

b)

a reaction causing a change from one optically active configuration to the opposite

c)

the addition of extra DNA or RNA into a section of genetic material

d)

the loss or excision of a section of genetic code, or its product, from a nucleic acid or protein sequence

43.
What mutation has occurred here? 
T-G-A-C-C-A
T-G-A-G-C-A
a)
Substitution
b)
Deletion
c)
Insertion
d)
Frameshift 
44.
How many boxes would say BB?
a)
1
b)
2
c)
4
d)
0
45.
What allele combination should go in the missing box?
a)
AA
b)
Aa
c)
aa
d)
none of these

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