Peristalsis is characteristic of skeletal muscle involving a contraction and relaxation of opposing layers of smooth muscle cells.

(A) True

(B) False

Which is an abiotic factor of an ecosystem? A. temperature B. tree C. owl D. tick

In eukaryotic cells, chromosomes are composed of ... ? a. DNA and phospholipids c. DNA and RNA

Carbohydrates are produced during the light reaction of photosynthesis. True or false

Summarize your understanding of the Chemical Basis of Life. How chemistry not only makes the elements of the body's structures but at the same time support their functions.

Que pase durante la telofase

What name is given to the process when a cell divides to produce Gametes?

The phase of cell division during which the chromatids are pulled apart and move to the opposite

What is occurring in the endocrine system during a "fight or flight" response? Release of adrenaline by the adrenal glands Release of cortisol by the adrenal glands Release of adrenaline by the gonads Release of cortisol by the gonads

Describe interactions between organisms within an ecosystem. Give an example of a specific relationship that organisms may have, and how this relationship affects the ecosystem.

Which process removes carbon dioxide from the atmosphere A: Respiration B: Humans breathing C: Carbonate formation D: Nitrogen fixation