Which of the following processes takes place during prophase?
a. mitotic spindles form.
b. nuclear membranes form around two sets of chromosomes.
c. chromosomes are copied
d. spindle fibers pull the sister chromatids apart

Vegetation that grows along the floors of tropical and temperate forests is called undergrowth. how is the undergrowth of a tropical rain forest most likely to differ from the undergrowth of a temperate forest? a. a tropical rain forest's undergrowth most likely experiences periods of dormancy during colder weather. b. a tropical rain forest's undergrowth most likely experiences periods of dormancy during rainy weather. c. the undergrowth of a tropical rain forest most likely requires less sunlight. d. the undergrowth of a tropical rain forest most likely requires more sunlight.

Blood has traveled from the heart to the toes. which describes the next step of the circulation process?

When proteins are being produced by a cell, scientist say that the genes are question 2 options: activated turned off replicated deactivated