Photosynthesis Review

An organism that must consume other organisms to obtain energy

• Heterotroph

• Autotroph

• Producer

• Consumer

Answer explanation

A heterotroph is an organism that cannot produce its own food and must consume other organisms for energy. Consumers are a type of heterotroph that specifically eat other organisms, making both 'Heterotroph' and 'Consumer' correct answers.

Tags

NGSS.HS-LS2-6

An organism that can make its own food

• Autotroph

• Heterotroph

• Producer

• Consumer

Answer explanation

An autotroph is an organism that can produce its own food, typically through photosynthesis. Producers are also autotrophs, as they create energy-rich compounds. Heterotrophs and consumers rely on other organisms for food.

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

The direct, initial source of energy for plants (indirectly, also the initial source of energy for most living things on Earth).

• Sun (light)

• mitochondria

• chemicals

• soil

Answer explanation

The sun provides the light energy that plants use for photosynthesis, making it the direct source of energy for them. This process is fundamental for life on Earth, as it indirectly supports most living organisms.

Tags

NGSS.HS-LS1-5

The organelle where photosynthesis takes place.

• mitochondria

• chloroplast

• nucleus

• vacuole

Answer explanation

Photosynthesis occurs in chloroplasts, which contain chlorophyll to capture light energy. Mitochondria are involved in respiration, the nucleus houses genetic material, and vacuoles store substances, but only chloroplasts are responsible for photosynthesis.

Tags

NGSS.HS-LS1-5

NGSS.HS-LS2-5

Identify the outer membrane

• A

• B

• C

• D

• E

Answer explanation

The outer membrane is identified as choice A, which typically represents the boundary layer in cellular structures, distinguishing it from the inner components represented by the other options.

Tags

NGSS.MS-LS1-2

Identify the stroma

• A

• B

• C

• D

• E

Answer explanation

The stroma is the supportive tissue of an organ, and in this context, option B correctly identifies the stroma, distinguishing it from other components represented by options A, C, D, and E.

Tags

NGSS.HS-LS1-5

NGSS.HS-LS2-5

Identify one thylakoid

• A

• B

• C

• D

• E

Answer explanation

Choice D is identified as a thylakoid, which are membrane-bound structures found in chloroplasts, essential for photosynthesis. The other options do not represent thylakoids.

Tags

NGSS.HS-LS1-5

NGSS.HS-LS2-5

Identify a granum (i.e. one stack of thylakoids)

• A

• B

• C

• D

• E

Answer explanation

A granum is a stack of thylakoids found in chloroplasts. In the provided options, choice C clearly represents a distinct stack of thylakoids, making it the correct identification of a granum.

The light dependent reaction occurs in the ___

• thylakoid membranes

• stroma

• cytoplasm

• mitochondria

Answer explanation

The light-dependent reactions of photosynthesis occur in the thylakoid membranes of chloroplasts, where sunlight is captured and converted into chemical energy.

Tags

NGSS.HS-LS1-5

Select the structure that represents the membrane bound disk responsible for the light dependent reaction.

Tags

NGSS.HS-LS1-5