Viruses always lack which of the following?

a. A plasma membrane
b. Genetic material
c. A protein coat
d. Organelles


d. Organelles

Biology & Microbiology

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Describe how changing the ways that land surfaces are used by humans cause changes in water resources.

What will be an ideal response?

Biology & Microbiology

Which of the following is true of the trafficking of proteins from the cytosol to the endoplasmic reticulum?

A. The proteins are first completely synthesized in the cytosol. B. The signal recognition particle (SRP) does not enter the ER lumen. C. The polypeptide signal sequence is cleaved by the peptide translocation complex. D. The SRP receptor faces the ER lumen side of the ER membrane.

Biology & Microbiology

Parenchyma ground tissue is the site of photosynthesis

a. True b. False

Biology & Microbiology

What is the term for a large-scale terrestrial

ecosystem with a unique climate and vegetation?

a. biosphere b. ecosystem c. trophic level d. biome e. community

Biology & Microbiology