What is peristalsis in the digestive system?

If one sample of food contains 200 calories and another contains 300 calories, which statement applies?

Examination of a tissue sample from the central nervous system reveals many darkly pigmented cells. this tissue probably came from the

Why must cell division be different between asexual reproduction and sexual reproduction? A. Sexual reproduction requires that the amount of DNA in a cell be halved. B.

Why are steroids able to diffuse across the plasma membrane? Their transport protein moves them through the membrane. They are amphipathic, allowing them to interact with the entire phospholipid.

Carl Linnaeus developed a two word system for naming organism. It was called

What is an abiotic factor of a marine ecosystem? A). Food produced B). Temperature change as you go deeper into the ocean C). Reproduction of animals

1. Suppose that xylem were located only in the roots and stems of a plant. Would fluids in the xylem still move? Explain.

What activity will decrease body temperature? Sweating Exercising Adding clothing Shivering

Organisms with true radial symmetry A. tend to be highly mobile. B. do not have a distinct head region and tend to be sedentary or passive drifters. C. can be divided into two matching halves along only one plane. D.

1. The Earth's carbon cycle consists of the flow, cycling, and recycling of all of the carbon on the Earth. Every living organism's composition includes the element carbon. How does carbon become part of living organisms?