7.9c

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

Tags

NGSS.MS-ESS1-1

Both Earth and Mars are inside the Sun's habitable zone as shown in the diagram. While the Earth has life, life has not been found on Mars. Which of the following is NOT a reason that Mars is not able to support life?

• Mars lacks water.

• Mars has a thin atmosphere.

• Mars is not close enough to the Sun.

• Mars does not have a protective magnetic field.

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NGSS.MS-ESS2-4

According to Dr. Edgar, a planetary geologist, a planet needs two things to be habitable. What are they?

• frozen water and liquid water

• liquid water and plants

• soil and oxygen

• liquid water and an energy source

Habitable zones are the areas...

• where the planet orientations cause seasons

• around a star where water can be liquid

• where only planets the size of Earth can form

• where life is guaranteed to be found on planets

Tags

NGSS.MS-ESS2-4

Look at the diagram above, which of the following would be the best planet to observe for life?

• E

• B

• C

• D

Why is Earth more likely to support human life than other planets in our solar system?

• It has a molten core

• It has oxygen and water

• It receives more solar radiation

Tags

NGSS.MS-ESS2-1

Earth is unique in the Solar System because it is the only planet that __________.

• rotates on its axis

• has water

• can sustain life

Tags

NGSS.MS-LS1-1

NGSS.MS-LS1-5

Enzymes are proteins that have a three-dimensional shape that is specific to a particular substrate. Environmental conditions can change the shape of the protein. What is the most likely result if the shape of the enzyme changes?

• the substrate will change its shape to match the enzyme

• the enzyme will no longer be able to catalyze the reaction with the substrate

• the products made from the enzyme and the substrate will be changed

• the enzyme will be able to bind to more diverse substrates than before

Which statement explains the effect of an inhibitor on an enzyme?

• A substrate will be able to bond with the enzyme.

• The enzyme will likely be attacked by immune cells.

• The enzyme will be unable to produce more enzymes.

• A substrate will be unable to attach to the enzyme.

Enzymes are capable of increasing the rate of a chemical reaction within a living cell.  Enzymes accomplish this through which of the following means?

• reducing the number of products   

• reducing the activation energy

• increasing the temperature of the cell

• increasing the concentration of reactants 

Tags

NGSS.MS-PS1-2