Which structure is composed of the filaments actin and myosin?

A. Sarcomere

B. Muscle fiber

C. Myofibril

D. Fascicle

Cells grown in the laboratory are mixed with a charged dye molecule that is unable to pass through the plasma membrane. If a ligand is added to the cells, the dye is observed entering the cells.

Which occurs during both DNA replication and protein production? RNA leaves the nucleus. DNA leaves the nucleus. RNA unzips. DNA unzips.

What is the range of the minimum pH levels that supports life for the nine species?

What are 3 types of RNA

Why does earth have such a diversity of plant and animal life? give three reasons.

A mother sleeping in the middle of the night nevertheless responds when she hears her 2-year-old daughter crying in the adjacent bedroom. This indicates that the mother possesses:

How can farmers keep topsoil on their land? check all that apply. a. close their gates b. keep plants growing c. plant trees to shield fields from the wind d. do not plow when extremely heavy rains are expected?

Measures how much matter is present in a substance

How is artificial selection similar to natural selection?

Which of these is a distinguishing characteristic of terrestrial habitats? O A. Plant life O B. Presence of oxygen O C. Salinity levels O D. Human presence