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MESA- Crime Scene Study Guide

Total questions: 80

Worksheet time: 53mins

Name
Class
Date
1.

A segment of DNA that codes for a trait

a)

gene

b)

centromere

c)

chromosome

d)

chromatid

2.

Genetic traits are determined by one or more

a)

genes

b)

organelles

c)

random chances

d)

cells

3.

A version or variation of a gene

a)

trait

b)

gene

c)

allele

d)

DNA

4.

The alleles that an organism has/inherits are its

a)

genotype

b)

phenotype

c)

chromosome

d)

recessive

5.

The observable expression of a trait is its

a)

phenotype

b)

genotype

c)

chromosome

d)

allele

6.

Long strands of DNA are wrapped into

a)

DNA

b)

Chromosome

c)

Alleles

d)

Phenotype

7.

______ is the set of genes possessed by someone

a)

Karyotype

b)

Fingerprint

c)

Genotype

d)

Phenotype

8.
Chromosomes are made of
a)
DNA
b)
RNT
c)
WWE
d)
DMA
9.

The physical expression of a trait.

a)

phenotype

b)

genotype

c)

chromosome

d)

allele

10.

Hair color and eye color are examples of a person's....

a)

recessive traits

b)

dominant alleles

c)

genotype

d)

phenotype

11.

What is the definition of Phenotype?

a)

The diagram that shows all the chromosomes of an individual

b)

The combination of alleles that control that an individual has for a particular trait

c)

How many genes on one chromosome

d)

How a trait is expressed (what it looks like or what it does)

12.

Segments of DNA are called _______________________

a)

Genes

b)

Alleles

c)

Traits

d)

Chromosomes

13.

Which of the following is the correct definition for a genotype?

a)

The physical expression of a gene. (Characteristics)

b)

A strand of DNA made up of multiple mutations.

c)

The expression of one of your parents traits.

d)

The set of genes in our DNA which is responsible for a particular trait.

14.

Alleles that are Rr are homozygous?

a)

True

b)

False

15.
Differences in traits are called _________ and explain why siblings don't look exactly alike.
a)
mutations
b)
variations
c)
traits
d)
evolution
16.
Genetic traits are passed from ________ to ________.
a)
parent; offspring
b)
chromosomes; traits
c)
DNA; genes
d)
offspring; parents
17.

What are the parts of a nucleotide?

a)

sugar

b)

nucleotide

c)

nitrogenous base

d)

phosphate group

18.
How many pairs of chromosomes do humans have?
a)
18
b)
23
c)
46
d)
12
19.

What are the names of the nitrogenous bases?

a)

adenine

b)

cytosine

c)

thymine

d)

guanine

20.

Adenine always pairs with...

a)

thymine

b)

cytosine

c)

guanine

d)

adenine

21.

Cytosine always pairs with...

a)

thymine

b)

cytosine

c)

guanine

d)

adenine

22.

Thymine always pairs with...

a)

thymine

b)

cytosine

c)

guanine

d)

adenine

23.

Guanine always pairs with...

a)

thymine

b)

cytosine

c)

guanine

d)

adenine

24.
Which organelle is DNA usually found in?
a)
cell membrane
b)
vacuole
c)
ribosome
d)
nucleus
25.

Label organelle 1.

a)

a.

b)

b.

c)

c.

d)

d.

26.

Label organelle 2.

a)

i.

b)

j.

c)

k.

d)

l.

27.

Label organelle 3.

a)

i.

b)

j.

c)

k.

d)

l.

28.

Label organelle 4.

a)

e.

b)

f.

c)

g.

d)

h.

29.

Label organelle 5.

a)

a.

b)

b.

c)

c.

d)

d.

30.

Label organelle 6.

a)

e.

b)

f.

c)

g.

d)

h.

31.

Label organelle 7.

a)

i.

b)

j.

c)

k.

d)

l.

32.

Label organelle 8.

a)

i.

b)

j.

c)

k.

d)

l.

33.

Label organelle 9.

a)

c.

b)

d.

c)

e.

d)

f.

34.

Label organelle 10.

a)

a.

b)

b.

c)

c.

d)

d.

35.

Label organelle 11.

a)

e.

b)

f.

c)

g.

d)

h.

36.

Label organelle 12.

a)

e.

b)

f.

c)

g.

d)

h.

37.

Which of the following organelles are only found in plants. Click all correct answers.

a)

Cytoplasm

b)

Chloroplast

c)

Cell Wall

d)

Large Vacuole

e)

Cell Membrane

38.

What are the small functional parts of the cell called?

a)

Organs

b)

Cellulite

c)

Organelles

d)

Nucleus

39.

True or false. All living things are made of cells.

a)

True

b)

False

c)

Sometimes yes sometimes no

40.

Letter A.

a)

cell wall

b)

Cell membrane

c)

cytoplasm

41.

Letter B.

a)

Cell wall

b)

Cell membrane

c)

Cytoplasm

42.

Letter D.

a)

Cytoplasm

b)

Lysosome

c)

Vacuole

43.

Letter F.

a)

Chloroplast

b)

Mitochondria

c)

Cytoplasm

44.

Letter H.

a)

Chloroplast

b)

Mitochondria

c)

Cytoplasm

45.
Dominant or recessive?
tt
a)
Dominant 
b)
Recessive
46.
Dominant or recessive?
Dd
a)
Dominant
b)
recessive
c)
neither
d)
homozygous
47.
Emily has brown hair. Which is most likely a true statement about Emily?
a)
Emily’s favorite color is brown.
b)
Emily has a parent with brown hair.
c)
Emily’s older brother has brown hair. 
48.
Which statement best supports why many offspring look similar to their parents?
a)
Offspring inherit characteristics from one parent.
b)
Offspring inherit characteristics from both parents.
c)
Parents choose which characteristics to pass on to their offspring.
d)
Parents choose to change their appearance to match that of their offspring.
49.
What are the possible combinations of a pea plant with the alleles PP and a male pea plant with the alleles pp.
P= purple
p= white
a)
all Pp
b)
all PP
c)
Pp,PP,Pp,PP
d)
all pp
50.
Homozygous is when...
a)
the alleles are the same
b)
the alleles are different
c)
the alleles are absent
d)
the alleles are present
51.
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%
52.
T - tall and t = short
In the punnett square below, what belongs in the missing square
a)
tt
b)
Tt
c)
Bb
d)
TT
53.
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%
54.
In plants, tall (T) is dominant to short (t). Perform the following cross: Tt x Tt. What is the probability of producing a short plant?
a)
0%
b)
25%
c)
50%
d)
75%
55.
What is the probability of heterozygous offspring?
a)
25%
b)
50%
c)
0%
d)
100%
56.
What allele combination should go in the missing box?
a)
AA
b)
Aa
c)
aa
d)
none of these
57.
A microscope is an instrument that.
a)
makes faraway objects look closer.
b)
makes small objects appear larger.
c)
decreases the size of small objects.
d)
increases the size of small objects.
58.
If your teacher asks you to move a microscope to table, how do you carry it?
a)
by the body tube and the eyepiece
b)
with one hand
c)
one hand on the arm and the other under the base
d)
with one hand on the base and the other on the eyepiece.
59.
What is part 1?
a)
eye piece
b)
body tube
c)
arm
d)
coarse adjust
60.
What part is 3?
a)
eye piece
b)
base
c)
arm 
d)
coarse adjust
61.
What is part 6?
a)
arm 
b)
base
c)
body tube
d)
illuminator
62.

Moves stage up and down for focusing; locates the specimen

a)

Fine Focus Knob

b)

Large Focus Knob

c)

Course Focus Knob

d)

Small Focus Knob

63.

Label the part of the microscope. What is part E?

a)

stage

b)

stage clips

c)

focus knob

d)

eyepiece tube

64.
Part 11
a)
Stage Clips
b)
Stage
c)
Diaphragm
d)
Illuminator
65.
Part 12
a)
Fine Adjustment Knob
b)
Coarse Adjustment Knob
c)
Diaphragm
d)
Objective
66.
Part 13
a)
Fine Adjustment Knob
b)
Course Adjustment Knob
c)
Stage
d)
Diaphragm
67.

Which part of the microscope is labeled 10?

a)

Ocular Lens

b)

Fine adjustment knob

c)

base

d)

light source

68.

Name the part of the microscope that the arrow is pointing to.

a)

body tube

b)

nosepiece

c)

objective lens

d)

stage

69.

Name the part of the microscope that the arrow is pointing to.

a)

eyepiece

b)

diaphragm

c)

nose-piece

d)

objective lens

70.

Name the part of the microscope that the arrow is pointing to.

a)

stage clips

b)

stage

c)

base

d)

diaphragm

71.

Name the part of the microscope that the arrow is pointing to.

a)

stage clips

b)

stage

c)

coarse adjustment knob

d)

aperture (stage opening)

72.

Name the part of the microscope that the arrow is pointing to.

a)

diapragm

b)

eyepiece

c)

coarse adjustment knob

d)

light source

73.

Name the part of the microscope that the arrow is pointing to.

a)

arm

b)

body tube

c)

base

d)

diaphragm

74.

Name the part of the microscope that the arrow is pointing to.

a)

coarse adjustment knob

b)

fine adjustment knob

c)

objective lens

d)

arm

75.

Name the part of the microscope that the arrow is pointing to.

a)

coarse adjustment knob

b)

fine adjustment knob

c)

arm

d)

body tube

76.

Name the part of the microscope that the arrow is pointing to.

a)

base

b)

body tube

c)

arm

d)

nosepiece

77.

Name the part of the microscope that the arrow is pointing to.

a)

body tube

b)

objective lens

c)

eyepiece

d)

base

78.

How many genes do humans have?

a)

About 20,000

b)

About 5,000

c)

23

d)

46

79.
How many total chromosomes do humans have?
a)
44
b)
23
c)
46
d)
50
80.

How many parts make up a nucleotide?

a)

One

b)

Two

c)

Three

d)

Four

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