Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Biology I > Chapter 7 and 28 > Flashcards

Chapter 7 and 28 Flashcards

1
Q

Photosynthesis contributes to plant growth by…

A

taking in carbon dioxide and making carbohydrates

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

what equation best summarizes photosynthesis

A

6 CO2 + 6 H2O&raquo_space;> C6H12O6 + 6O2

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

in photosynthesis, CO2 is …. and H2O is …

A

reduced; oxidized

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

The color that we see when looking at a pigmented object is…

A

the wavelengths that are reflected or transmitted by the pigmented object

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

The energy of wavelengths that appear…. is least useful to photosynthesis.

A

green

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

What is one reason why plants have accessory pigment molecules, like chlorophyll b and carotenoids

A

to reflect more energy

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

What is responsible for the yellow-orange coloration of leaves in the fall?

A

carotenoids

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Within the inner membrane of a chloroplast, interconnected sacs of membrane called… are suspended in a thick fluid called the…

A

thylakoids…stroma

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

The Calvin cycle requires… and… from the light reactions to operate.

A

ATP… NADPH

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

What is the function of stomata?

A

gas exchange

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Through what structure(s) do plants obtain most of their water?

A

roots

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Where are photosystems located?

A

thylakoid membrane

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

If you provided plants with their preferred wavelength of light, but only minimal amounts of water, what would you expect to occur?

A

decreased amounts of ATP being produced by the plants

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Which of the following is the source of electrons for the light reactions?

A

H2O

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Which of the following is found in both cellular respiration and in the light reactions of photosynthesis?

A

electron transport chain

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

In photosynthesis, an H+ ion gradient forms across the…

A

thylakoid membrane

17
Q

The herbicide, atrazine, targets the water splitting photosystem by acting as an electron acceptor and preventing electrons from entering the electron transport chain. Which of the following steps of photosynthesis would NOT be affected by atrazine?

A

H2O splitting

18
Q

Describe the relationship between photosynthesis and cellular respiration.

A 
The inputs of cellular respiration are the outputs of photosynthesis and vice versa. 
Photosynthesis 
inputs: CO2 + H2O
outputs: O2 + C6H12O6 
Cellular Respiration: 
inputs: O2 + C6H12O6 
outputs: H2O + CO2
19
Q

What will happen if you put a plant in the CO2 indicator solution?

A

The plant will take in a lot of CO2, so the indicator will have a higher pH because the addition of carbon causes solutions to be more acidic. There will be fewer carbon molecules as the plant goes through photosynthesis, so the solution will become more basic.

20
Q

What happens if you put algae beads in the carbon dioxide indicator? Why?

A

The solution will change into a darker color, which indicates a more basic solution. This happens is because algae perform photosynthesis and take in CO2. Since photosynthesis has an input of CO2 and an output of O2, the algae will take in CO2. When there are fewer CO2 molecules, the pH of the solution will get higher because carbon makes solutions more acidic.

21
Q

How will the pH of the CO2 indicator solution change if the algae beads perform more cellular respiration than photosynthesis? How ill the CO2 indicator solution color change?

A

The pH of the CO2 indicator solution will get lower as the algae beads perform cellular respiration because the process of cellular respiration releases CO2, which causes solutions to become more acidic. The CO2 indicator solution’s color will become lighter because the indicator solution shows acidic solutions in lighter colors, and the solution will become more acidic with the algae beads performing cellular respiration.

22
Q

Do algae perform cellular respiration as well as photosynthesis?

A

Algae must perform cellular respiration because they must find a way to access stored in glucose. They are eukaryotes, and all eukaryotic cells have mitochondria that have a crucial role in the process as the sites of cellular respiration.

23
Q

Does the water-splitting photosystem depend on any other step? How?

A

Yes, it ness light so that it has electrons to pass on to the electrons transport chain.

24
Q

Does the NADPH-producing photosystem depend on any other step? How?

A

Yes, it depends on the electron transport chain in order to transfer electrons to NADP+.

25
Q

Does ATP synthase depend on any other step? How?

A

This step depends on the electron transport chain to pump hydrogen ions across the thylakoid membrane.

26
Q

Does the Calvin cycle depend on any other step? How?

A

It depends on ATP synthase and the NADPH producing photosystem, which supply it with the NADPH and ATP it needs

27
Q

does the Calvin cycle have an experimental variable to measure?

A

yes, the number of 3-carvon molecules

28
Q

does ATP synthase have an experimental variable to measure?

A

yes, the number of ATP molecules and the concentration of hydrogen ions

29
Q

What experimental variable can we measure for the NADPH producing photosystem?

A

the number of NADPH

30
Q

What experimental variable can we measure for the water-splitting photosystem?

A

the number of oxygen atoms and hydrogen ions

31
Q

What would happen if a herbicide disrupted the water-splitting photosystem?

A

The electron transport chain would not get the electrons needs to make NADPH that will enter the Calvin cycle. Also, water molecules would not be split, meaning the electron transport chain would not get the electrons it needs.

32
Q

What would happen if a herbicide disrupted the NADPH-producing photosystem?

A

Glucose would be formed because NADPH can’t be formed, so glucose won’t be reduced, and the Calvin cycle could not form two G3P molecules that will be used to make glucose.

33
Q

What would happen if a herbicide disrupted ATP synthase?

A

Without this step, the ATP need in the Calvin cycle would not formed, and the Calvin cycle could not form two G3P molecules that will be used to make glucose.

34
Q

What would happen if a herbicide disrupted the Calvin cycle?

A

G3P would not be formed, which also means that carbon fixation will not occur and glucose will not be made.

Biology I (8 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions