Middle School Life Science Review

Which of the following best shows the ways that energy from the Sun and the force of gravity affect the cycling of water?

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NGSS.MS-ESS2-4

Which of the following factors most likely limits competition for prey between hawks and owls living in the same area?

• Hawks and owls have different predators.

• Hawks have speckled eggs and owls have white eggs.

• Hawks and owls are camouflaged by different feather colors.

• Hawks are active during the day and owls are active during the night.

Polar bears live in the Northern Hemisphere and need a large amount of Arctic ice to hunt.

Which of the following is most likely to occur if the amount of Arctic ice in polar regions decreases significantly over a short period of time?

• Polar bears will migrate to the South.

• Polar bears will become extinct.

• Polar bears will develop a larger body size.

• Polar bears will adapt to water environments.

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

NGSS.MS-LS2-4

Which characteristic of our solar system is most crucial to support life on Earth?

• the length of time of Earth’s revolution

• distance between the Earth and Sun

• the distance between the Sun and other stars

• the composition of Earth’s Moon

Scientists approximate that there are 20 billion stars like our sun in the Milky Way. Why does the sun appear to be brighter than any other star in the Milky Way?

• The sun is older than all of the other stars in the Milky Way.

• The sun is closer to the Earth than any other star in the Milky Way.

• The sun is hotter than any other star in the Milky Way.

• The sun has more energy than any other star in the Milky Way.

The appearance of the moon changes in a predictable pattern that lasts approximately 28 days. The changes in appearance are called phases of the moon. What is the main cause of moon phases?

• The distance between the Earth and the moon.

• The tilt of Earth on its axis compared to the tilt of the moon on its axis.

• The amount of sunlight the moon’s surface is exposed to.

• The position of the moon in relationship to the Earth and Sun.

Tags

NGSS.MS-ESS1-1

Why is DNA important?

• it is very small and very complicated

• it's in everything

• it serves as the blueprint for traits of all living things

• because we eat it every day for energy

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NGSS.MS-LS3-1

What determines the code, or information, of a DNA molecule?

• the shape (structure) of the nitrogen bases

• the order (sequence) of the nitrogen bases

• the color of the nitrogen bases

• the frequency (number) of nitrogen bases

Tags

NGSS.HS-LS1-1

The two strands of nitrogenous bases in DNA are joined by which type of bond?

• polar bonds

• ionic bonds

• covalent bonds

• hydrogen bonds

Tags

NGSS.HS-LS1-1

The drawing shows the structure of what molecule?

• DNA molecule

• lipid molecule

• carbohydrate molecule

• protein molecule

Tags

NGSS.HS-LS1-1