Which of the following best describes a dead cell as a system?

a. It is a closed system that exchanges energy with its surroundings.
b. It is an open system that exchanges energy with its surroundings.
c. It is an isolated system that does not exchange energy or matter with its surroundings.
d. It is a closed system that


Ans: c. It is an isolated system that does not exchange energy or matter with its surroundings.

Biology & Microbiology

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All of the following are associated with photosystem II EXCEPT for

a. the excitement of electrons to generate a proton gradient that will drive ATP synthesis. b. the transfer of electrons to NADP+ to generate NADPH. c. the splitting of water. d. the transfer of electrons to a primary electron acceptor. e. noncyclic electron flow.

Biology & Microbiology

The purpose of the sex pilus is to:

a. form a cytoplasmic bridge and conjugate. b. form a gap junction and conjugate. c. facilitate cytoplasmic exchange. d. allow bacteriophage infection. e. lyse the cell.

Biology & Microbiology

What is the correct order of largest to smallest respiratory structures?

a. Bronchiole - alveolar duct - alveoli b. Alveoli - alveolar duct - bronchiole c. Alveoli - bronchiole - alveolar duct d. Alveolar duct - alveoli - bronchiole e. Bronchiole - alveoli - alveolar duct

Biology & Microbiology

When a given area is saturated with territories, excluded individuals who lack a territory soon die of starvation

Indicate whether the statement is true or false

Biology & Microbiology