What structure gives animal cells a defined structure?

a. cell membrane

b. cell wall

c. proteins

d. cortex

Which group of organisms in a food web are the most important

Why does water heat up and cool down so slowly?

Which of the following includes the medulla, pons, cerebellum, and reticular formation and governs functions such as balance and coordination, consciousness, and digestion? a. forebrain b. hindbrain c. midbrain d. split-brain

What is an allele? A. Trait form that is hidden by a dominant gene B. One of different forms of the same gene C. Trait form that is displayed by recessive genes D. Identical copies of two different genes

Relative to rainfall, the tundra is most likely what other biome?

When do density-dependent factors operate most strongly

Describe how dna acts as the "master molecule" of a cell.

The experiment that Stanley L Miller and Harold C Urey conducted regarding the origin of life from inanimate matter was conducted in the absence of oxygen over water. But doesn't water contain oxygen?

How often should files be backed up according to experts? A. Daily B. Weekly C. Monthly D. Annually

This is the process by which information from a gene is used in the synthesis of a functional gene product. These products are often proteins.