Answers2026 Summer 305 CR_2002040-MJ Comprehensive Science 1Cumulative Exam

Cumulative Exam — Cumulative exam Answers

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Which part of Earth most likely has the highest albedo value?

A
smooth ocean ice when the Sun is at a 30-degree angle
B
smooth ocean ice when the Sun is at a 15-degree angle
C
choppy ocean water when the Sun is at a 30-degree angle
D
choppy ocean water when the Sun is at a 15-degree angle
42
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Which kind of molecule is used by organisms to store and transmit genetic material?

A
nucleic acid
B
carbohydrate
C
protein
D
lipid
43

Why are objects that fall near Earth’s surface rarely in free fall?

A
Gravity does not act on objects near Earth’s surface.
B
Air exerts forces on falling objects near Earth’s surface.
C
The objects do not reach terminal velocity.
D
The objects can be pushed upward by gravity.
44

Which of these diseases can be spread?

A
diabetes
B
Parkinson’s disease
C
malaria
D
cancer
45

Henry touched a hot plate and immediately moved his finger away from it.Which best explains the integumentary system’s role in this reaction?

A
Oil in the skin sensed the temperature difference.
B
Nerve endings in the skin responded to the heat.
C
Some hairs stood up when the fingers touched the plate.
D
His nails absorbed heat and moved his finger away from the plate.
46

Which lists three parts of sunlight that make up some of the visible spectrum?

A
green, blue, indigo
B
infrared, red, orange
C
ultraviolet, infrared, electromagnetic
D
violet, ultraviolet A, ultraviolet B
47

Scientists are studying a group of living cells under a microscope. They write down notes about the size, shape, and color of the cells as well as other traits.Which best describes this type of investigation?

A
comparative, because the scientists will be making observations in order to form a hypothesis
B
comparative, because the scientists are measuring dependent and independent variables
C
descriptive, because the scientists are using independent variables to test a hypothesis
D
descriptive, because the scientists are writing down observations but not making comparisons
48

Seaweed belongs to which of Earth’s spheres?

A
atmosphere
B
biosphere
C
geosphere
D
hydrosphere
49

This table shows how the number of kingdoms has changed with each major scientist.

Question illustration
A
2
B
3
C
5
D
6
50

Which shows the best connection between the digestive and excretory systems?

A
The digestive system fuels the cells and the excretory system rids the body of the cells’ waste.
B
The digestive system rids the body of the cells’ waste and the excretory system fuels the cells.
C
The digestive system does physical digestion while the excretory system carries out chemical digestion.
D
The digestive system carries out chemical digestion while the excretory system does physical digestion.

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