Where are photosystems located?

A) chlorophyll
B) thylakoid membrane
C) mitochondria
D) stroma


B

Biology & Microbiology

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Guard cells are often associated with __________, special epidermal cells that provide a reservoir of

water and ions. a. companion cells b. cuticle cells c. cork cells d. sclerenchyma cells e. subsidiary cells

Biology & Microbiology

The sensor kinase for the OmpF: OmpC two-component regulatory system is ________.

A. the EnvZ protein B. the OmpK protein C. the MicF RNA D. None of the choices are correct.

Biology & Microbiology

Animal viruses typically enter a cell by

a. membrane fusion. b. endocytosis. c. membrane fusion or endocytosis. d. direct penetration.

Biology & Microbiology

When two tertiary proteins combine you have ___________ structure.

Fill in the blank(s) with the appropriate word(s).

Biology & Microbiology