Question

5

The carbon assimilation (Calvin cycle) stage of photosynthesis requires:

Group of answer choices

ATP, NADPH and CO2

ATP, NAD, and hydrogen

ATP, NADPH, and oxygen

ATP, hydrogen, and oxygen

6

Which of the following would you expect to find predominating in the plasma membrane of a unicellular eukaryotic organism thriving in glacier ice?

Group of answer choices

20 carbon long fatty acids with 1 double bond

16 carbon long fatty acids with 3 double bonds

20 carbon long saturated fatty acids

18 carbon long fatty acids with 1 double bond

5

Which statement is correct about facilitated diffusion?

Group of answer choices

facilitated diffusion requires energy in the form of ATP

facilitated diffusion can transport a molecule against a concentration gradient

facilitated diffusion can occur only in specific cell types

the rate of facilitated diffusion is limited by the number of transport proteins in the membrane

6

Which of the following statements about glycolysis is true:

Group of answer choices

glycolysis does not operate in the absence of O2

glycolysis produces a net gain of ATP

the end products of glycolysis are CO2 and H2O

glycolysis has steps involving oxidation, but not reduction reactions

the enzymes for glycolysis are located in the golgi

7

The oxidized form of this electron carrier is:

Group of answer choices

FADH2

FAD

8

The photosystem that captures light at 680 nm

Group of answer choices

PSII

PSI

9

Location of the light independent reaction

Group of answer choices

Stroma

Thylakoid

10

Which of the following does not occur as the result of the noncyclic flow of electrons in photosynthesis?

Group of answer choices

NADP+ picks up hydrogen ions and electrons, forming NADPH

ADP is phosphorylated to produce ATP

water is split, releasing O2

FADH2 is oxidized into FAD

11

Which of the following is not a major function of the plasma membrane?

Group of answer choices

production of DNA used to make proteins for the cell membrane

regulation of ions and molecules passing into and out of the cell

contact, recognition, and communication between cell types

separation of fluid and contents between the inside and outside of the cell

Answer 1

3.- The first option: ATP, NADH and CO2

Remember that this stage is the one that fixes carbon so it requires CO2

4.- The second option: 16 carbon long fatty acids with 3 double bonds

The longer the chain the less fluid the membrane will be, and the more double bonds present the more fluid the membrane. Low temperatures tend to lower fluidity, thus cells counter this rigidity by lowering the length of the chain and increasin gthe unsatured bonds.

5.- The fourth option: The rate of facilitated diffusion is limited by the number of transport proteins in the membrane

Facilitated difusion is the normal passive diffusion but just across channel proteins in the membrane

6.- The second option: Glycolysis produces a net gain of ATP

ATP yields a small ATP production, it occurs in cytoplasm

7.- The second option: FAD

8.- The first option: PSII

9.- The first option: Stroma

10.- The fourth option: FADH2 is oxidized into FAD

This process will reduce the reductive agents because it is a catabolic pathway

11.- The first option: Production of DNA used to make proteins for the cell membrane

DNA is not produced here