Energy and Life

What describes the conversion of ADP to ATP?

• An input of energy as both phosphate groups detach

• A release of energy as one phosphate group detaches

• A release of energy as a third phosphate group is attached

• An input of energy to attach a third phosphate group

Tags

NGSS.MS-LS1-7

Stuart is listing the changes to matter and energy that occur during the process of photosynthesis. Which of these examples should he include in his list?

• Nuclear changes that convert hydrogen and oxygen into carbon.

• Chemical changes that convert carbohydrates into smaller molecules.

• Changes that convert light energy into chemical energy stored in carbohydrates.

• Changes that convert chemical energy into heat and light.

Tags

NGSS.MS-LS1-6

NGSS.MS-LS1-7

How do plants synthesize high-energy carbohydrates?

• Plants use carbon dioxide and energy from the sun to perform photosynthesis.

• Plants use chemical compounds to perform photosynthesis.

• Plants take compounds made by other living organisms.

• Plants use a waxy cuticle.

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

Chloe is developing a model of photosynthesis. The first part of the model is shown below. Which would be the MOST useful next step for Chloe to develop the photosynthesis model further?

• Extend the lines for sunlight so that they pass through the autotroph.

• Represent a chemical reaction in the autotroph that produces high-energy carbohydrates.

• Represent a chemical reaction in the autotroph that produces high-energy proteins.

• Draw a circle to represent a heterotroph, and draw a line to connect it to the autotroph.

Tags

NGSS.MS-LS1-6

NGSS.MS-LS1-7

A mushroom gains its energy by decomposing the tissues of dead organisms. Should mushrooms be classified as autotrophs, heterotrophs, in both groups, or in neither group, and for what reason?

• They are autotrophs because they do not eat their food, as animals do.

• They are autotrophs because decomposition is very similar to photosynthesis.

• They are heterotrophs because their food is made by other organisms.

• They are both autotrophs and heterotrophs, because they may grow in sunlight or darkness.

How do heterotrophs and autotrophs differ in the way they obtain energy? (2 points)

Tags

NGSS.MS-LS2-3

Explain how a rechargeable battery can be used as a model of ADP and ATP. (3 points)

Tags

NGSS.HS-LS1-7