Heterotrophs conduct cellular respiration and use what 2 things? 1. Water and Carbon dioxide
2. hydrogen and oxgyen
3. chemical and physical

Explain why in any given geographical region, women tend to have lighter skins( by 3-4% on average) than men?

In pea plants, yellow seed color (y) is dominant and green seed color (y) is recessive. based on the punnett squares, what are the chances that the offspring in the second generation will have green seeds?

Do the following statements describe actin, myosin, both of the proteins or neither of the proteins? (a) contains a binding site for calcium (b) found in the i band (c) exists in a globular (g) form and a filamentous (f) form (d) contains a binding site for atp (e) is a component of the thin filament (f) is a component of the thick filament