Which process in photosynthesis uses energy from the sun?(1 point)

Question

Responses

releasing oxygen
releasing oxygen

splitting water into hydrogen and oxygen
splitting water into hydrogen and oxygen

combining carbon dioxide and hydrogen
combining carbon dioxide and hydrogen

absorbing carbon dioxide

Answer 1

The process in photosynthesis that uses energy from the sun is combining carbon dioxide and hydrogen. This occurs during the Calvin cycle, where the energy captured from sunlight is used to convert carbon dioxide and hydrogen (from water) into glucose.

However, it is important to clarify that the light-dependent reactions (not explicitly mentioned in your options) primarily utilize sunlight to split water and release oxygen.

If you are looking for the best answer based on the options provided, then combining carbon dioxide and hydrogen would be the most closely related to the use of sunlight energy during the overall photosynthesis process.

Answer 2

A scientist fills a glass container with water and places an aquatic plant inside the container, then closes the lid and places the container in direct sunlight. The scientist observes small bubbles on the surfaces of the plant’s leaves on days 1 and 2, but no bubbles on day 3. The scientist concludes that the bubbles were caused by photosynthesis. Which substance should be added to the water in order for the bubbles to reappear?(1 point)
Responses

hydrogen gas
hydrogen gas

glucose
glucose

oxygen
oxygen

carbon dioxide

Answer 3

In order for the bubbles to reappear, the scientist should add carbon dioxide to the water.

Photosynthesis is the process by which plants use sunlight, water, and carbon dioxide to produce glucose and oxygen. The bubbles observed on the plant’s leaves were likely oxygen being released as a byproduct of photosynthesis. Without sufficient carbon dioxide, the plant would not be able to perform photosynthesis effectively, which could explain why no bubbles were observed on day 3. Adding carbon dioxide would enable the plant to resume photosynthesis and produce oxygen again, leading to the formation of bubbles.

Answer 4

ATP is(1 point)
Responses

a form of energy that cannot be stored
a form of energy that cannot be stored

a form of energy that can be used and stored
a form of energy that can be used and stored

released when carbon dioxide and water form glucose
released when carbon dioxide and water form glucose

stored during cellular respiration

Answer 5

ATP is a form of energy that cannot be stored.

ATP (adenosine triphosphate) is the primary energy carrier in living organisms, and it is used to store and transfer energy within cells. However, ATP itself is typically used immediately for energy in cellular processes and is not stored in significant amounts within cells. Instead, cells continuously regenerate ATP from ADP (adenosine diphosphate) and inorganic phosphate through processes like cellular respiration and photosynthesis.

Answer 6

ATP stores some of the energy from glucose molecules during cellular respiration. How is the remaining energy from these glucose molecules released?(1 point)
Responses

Excess light
Excess light

Excess heat
Excess heat

Excess water
Excess water

Excess carbon dioxide

Answer 7

The remaining energy from glucose molecules during cellular respiration is released as excess heat.

When glucose is broken down to produce ATP, not all the energy from glucose is converted into ATP. Some of it is lost as heat during the process, which helps maintain body temperature in warm-blooded organisms and is a byproduct of the metabolic reactions involved in cellular respiration.

Answer 8

One molecule of glucose is recycled into ___ molecules of carbon dioxide during cellular respiration.(1 point)
Responses

6
6

12
12

1
1

2

Answer 9

One molecule of glucose is recycled into 6 molecules of carbon dioxide during cellular respiration.

The process of cellular respiration, specifically during the Krebs cycle (or citric acid cycle), completely oxidizes one molecule of glucose, producing 6 molecules of carbon dioxide as a byproduct.