Which component is present in some viruses but absent in others?

A.) nucleic acid

B.) capsid

C.) envelope

D.) cell membrane

Name the organelles that are only found in the plant cell but not in the animal cell.

Liver cells, bone cells, nerve cells, muscle cells are called?

The stomata open and close in response to pressure within

Which of these is a abiotic factor of an ecosystem

A geologist is studying an ancient stack of rock layers. Most of the layers contain fossils of shallow marine creatures (clams, corals, etc.), suggesting the layers formed in a shallow ocean environment.

True or false: the pulmonary circuit pumps oxygen-rich blood from the heart to the rest of the body and then back to the heart.

What type of inheritance is blood type

List the three reactants (or starting materials) for photosynthesis

Explain what happens during reverse transcription.

Identify some of Mendel's experimental procedures. How did they contribute to his success as a geneticist?