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WorksheetsMidterm practice
Total questions: 50
Worksheet time: 2hrs 40mins
Name
Class
Date
1.
Joseph wanted to see if watering a plant with orange juice would cause the plant to grow taller. He watered one plant with 30 mL of water and one plant with 30 mL of orange juice and measured their heights every other day.
What is the dependent variable?
What is the dependent variable?
a)
Different liquids
b)
Type of plants
c)
Plant growth
d)
30 mL
2.
Which unit measures volume?
a)
meters
b)
liters
c)
grams
d)
grams/liter
3.
Which unit measures mass?
a)
meters
b)
liters
c)
grams
d)
grams/liter
4.
Which unit measures length?
a)
meter
b)
liter
c)
gram
d)
grams/liter
5.
Which unit measures volume?
a)
meter
b)
liter
c)
gram
d)
grams/liter
6.
Which unit measures density?
a)
meter
b)
liter
c)
gram
d)
grams/liter
7.
Joseph wanted to see if watering a plant with orange juice would cause the plant to grow taller. He watered one plant with 30 mL of water and one plant with 30 mL of orange juice and measured their heights every other day.
What is the independent variable?
What is the independent variable?
a)
Plant growth
b)
Types of liquids
c)
Plant types
d)
Amount of liquid
8.
Johnny usually waters his plants with fresh water, but he noticed that when he sprinkled salt water on his tomato plants they began to wilt and die. He also noticed that when given fresh water, the plants did not wilt and die. Johnny thought hard about the problem and decided that if he gives his plants salt water, then they will die. He conducted an experiment by giving 10 of his plants fresh water and 10 of his plants salt water. The plants that received the salt water died and those that he gave fresh water did not die.
Which sentence from the paragraph states Johnny's hypothesis?
Which sentence from the paragraph states Johnny's hypothesis?
a)
He conducted an experiment by giving 10 of his plants fresh water and 10 of his plants salt water.
b)
Johnny noticed that when he sprinkled salt water on his tomato plants, they began to wilt and die.
c)
Johnny thought hard about the problem and decided that if he gives his plants salt water, then they will die.
d)
When given fresh water, the plants did not wilt and die.
9.
To solve problems based on observations and experimentation scientists use a set of procedures called what?
a)
Hypothesis
b)
The scientific method
c)
Scientific theory
d)
Scientific law
10.
330mL = _______ L
a)
0.330
b)
3.30
c)
33000
d)
330000
11.
What tool is used to measure mass?
a)
Graduated cylinder
b)
Scale
c)
Balance
d)
Meter stick
12.
What tool is used to measure volume?
a)
Graduated Cylinder
b)
Scale
c)
Balance
d)
Meter stick
13.
What tool is used to measure length?
a)
Graduated cylinder
b)
Scale
c)
Balance
d)
Meter stick
14.
Which of the following statements is an example of an inference?
a)
Alex wears glasses
b)
Jan's shirt is red.
c)
Red is Jan's favorite color.
d)
There are 24 people in the class.
15.
Todd wondered why raisins sank and then floated in soda. He believed that if the raisins collected bubbles on them, then they would float to the top. This is an example of what?
a)
A conclusion
b)
A hypothesis
c)
An experiment
d)
An observation
16.
Which choice is a controlled variable?Joseph wanted to see if watering a plant with orange juice would cause the plant to grow taller. He watered one plant with 30 mL of water and one plant with 30 mL of orange juice and measured their heights every other day.
Which choice is a controlled variable?
Which choice is a controlled variable?
a)
Same amount of liquid
b)
The amount of growth
c)
The type of liquid
d)
The plant with water
17.
2300 Kg = _____ g
a)
2.3
b)
0.23
c)
2300000
d)
23000
18.
What would be the correct metric unit to use to measure the distance from here to Florida?
a)
meter
b)
mile
c)
kilometer
d)
millieter
19.
What is the temperature at which water boils?
a)
0 º Celsius
b)
50º Celsius
c)
100º Celsius
d)
212º Celsius
20.
A 3 cm steel cube and a 3 cm wood cube would have the same _________.
a)
Density
b)
Volume
c)
Mass
d)
Weight
21.
Which term refers to the movement of materials through a cell membrane without using the cell's energy?
a)
concentration
b)
collision
c)
active transport
d)
passive transport
22.
Which process uses cell energy?
a)
passive transport
b)
active transport
c)
osmosis
d)
diffusion
23.
Which of the following best describes endocytosis?
a)
particles moving from areas of high concentration to low concentration
b)
the movement of particles out of a cell using a vesicle in the cell membrane
c)
water particles moving from areas of high concentration to low concentration
d)
the movement of particles into a cell using a vesicle in the cell membrane
24.
Which of the following best describes exocytosis?
a)
particles moving from areas of high concentration to low concentration
b)
the movement of particles out of a cell using a vesicle in the cell membrane
c)
water particles moving from areas of high concentration to low concentration
d)
the movement of particles into a cell using a vesicle in the cell membrane
25.
Where is the DNA contained in the cell?
a)
nucleus
b)
chloroplast
c)
mitochondria
d)
endoplasmic reticulum
26.
Which of the following is an example of a prokaryotic cell?
a)
human skin cells
b)
dog liver cells
c)
plant root cells
d)
bacteria cells
27.
What happens during cell respiration?
a)
Oxygen is released into the air
b)
Glucose is broken down, releasing energy
c)
Carbohydrates are released into the bloodstream
d)
Water and carbon dioxide are converted into energy
28.
What are the products of photosynthesis?
a)
carbon dioxide and water
b)
oxygen and water
c)
carbon dioxide and glucose
d)
oxygen and glucose
29.
A cell with 20 chromosomes undergoes mitosis and cytokinesis. How many daughter cells are produced and what number of chromosomes do they have?
a)
2 daughter cells, 10 chromosomes each
b)
1 daughter cell, 20 chromosomes each
c)
4 daughter cells, 10 chromosomes each
d)
2 daughter cells, 20 chromosomes each
30.
What is the outermost layer of an animal cell?
a)
Cell wall
b)
Cell membrane
c)
Cytoplasm
d)
Nuclear membrane
31.
What is the outermost layer of a plant cell?
a)
Cell wall
b)
Cell membrane
c)
Cytoplasm
d)
nuclear membrane
32.
Which two cell parts are found in plant cells but are never found in animal cells?
a)
Chloroplast and cytoplasm
b)
Chloroplast and vacuoles
c)
Chloroplast and cell walls
d)
Mitochondria and cell walls
33.
What type of cell has a nucleus?
a)
Eukaryotic
b)
Prokaryotic
c)
Bacteria
d)
Prison
34.
What type of cell does not have a nucleus?
a)
Eukaryotic
b)
Prokaryotic
c)
Plant cells
d)
Prison
35.
The movement of molecules from an area of high concentration to an area of low concentration is called ___________.
a)
Active transport
b)
cytokinesis
c)
exocytosis
d)
diffusion
36.
The diffusion of water through a cell membrane is called _______.
a)
endocytosis
b)
exocytosis
c)
osmosis
d)
cytokinesis
37.
What is the chemical in plants that make them green called?
a)
chloroplast
b)
algae
c)
chlorophyll
d)
chloroform
38.
Blue flowers (B) are dominant. Green flowers (b) are recessive. If a male blue flower plant with genotype Bb is crossed with a female blue flower plant with genotype Bb, what is the percent chance that they will have a green flower offspring?
a)
25%
b)
50%
c)
75%
d)
100%
39.
How many chromosomes do most human cells have (i.e. skin cells)?
a)
1
b)
23
c)
46
d)
0
40.
If you know the genotypes of both parents, what tool can you use to predict the offspring's trait?
a)
Pedigree
b)
Pie Chart
c)
Bar Graph
d)
Punnett Square
41.
Who was the monk that discovered the idea of heredity and genes?
a)
Albert Einstein
b)
Charles Darwin
c)
Gregor Mendel
d)
Thomas Edison
42.
What is the probability of producing a tall pea plant from a genetic cross between two heterozygous tall pea plants?
a)
25%
b)
50%
c)
75%
d)
100%
43.
If a homozygous black guinea pig (BB) is crossed with a homozygous white guinea pig (bb) what is the probability that an offspring will have black fur?
a)
0%
b)
50%
c)
75%
d)
100%
44.
A purebred pea plant with white flowers is crossed with a purebred pea plant that has red flowers, which is the dominant trait. Each of their offspring has red flowers. What are the genotypes of the parents?
a)
RR x rr
b)
RR x RR
c)
Rr x Rr
d)
Rr x RR
45.
Bacteria divide through the asexual process of...
a)
Fertilization
b)
Budding
c)
Binary Fission
d)
Meiosis
46.
What shape is used to show a female on a pedigree chart?
a)
Square
b)
Triangle
c)
Circle
d)
Rectangle
47.
When sex cells combine to produce offspring, each sex cell will contribute...
a)
Twice the number of chromosomes of body cells
b)
The same number of chromosomes as body cells
c)
Half the number of chromosomes as body cells
d)
no chromosomes
48.
What happens during meiosis?
a)
Gametes are made
b)
Gametes combine to form a new organism
c)
Prokaryotes reproduce
d)
Skin cells are made
49.
4.75 kg = _________ mg
a)
4750
b)
47500
c)
475000
d)
0.0000475
50.
525 mm = _______ cm
a)
5.25
b)
5250
c)
0.525
d)
52.5
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