Question

1.) Light absorbed by a chlorophyll a causes:

A) An electron to move to a neighboring water molecule

B) An electron to move from ground state to an excited state

C) An electron to move from chlorophyll to ADP

D) Non of the answers is correct

2.) Which of the following is/are light harvesting molecules?

A) Plastocyanin

B) Carotenoids

C) Carotenoids and chlorophyll b

D) Vitamin D

3.) What evidence eists to support an endosymbiotic event for the formation of a chloroplast? The DNA of the chloroplast and the cyanobacterium:

A) encodes all chloroplast proteins.

B) is linear

C) is arranged in operons

D) has multiple start sites for DNA replication

4.) What is the implication of the difference in permeability of the mitochondrial membrane vs. the thylakoid membrane to Mg2+ and Cl-?

A) The thylakoid membrane, being permeable to Mg2+ and Cl- means that electron flow only occurs with transport of 1 Mg2+ and one Cl-.

B) The mitochondrial membrane, being permeable to Mg2+ and Cl- means that although protons are pumped across the membrane, no membrane potential is generated.

C) The thylakoid membrane is less permeable to Mg2+, Cl-, and H+ and therefore more energy is needed to pump protons across the membrane.

D) The thylakoid membrane, being permeable to Mg2+ and Cl- means that although protons are pumped across the membrane, no membrane potential is generated.

Answer 1

1) Light absorbed by a chlorophyll causes B)  An electron to move from ground state to an excited state

2) Caretenoids and chlorophyll b are light harvesting molecules