Approximately how many oxygen molecules can single rbc carry

Which is the best description of photophosphorylation? A) the absorption of light energy by chlorophyll B) the conversion of light energy to chemical energy C) the removal of a phosphate group from a molecule D) the conversion of ADP to ATP using

Which activity is a function of all living cells?

This type of feedback exaggerates the effects of variations from normal

True or false? cells are more similar structurally and functionally than they are different. a. true b. false

How does flooding affect rivers? a. It causes river bends to be cut off. b. It picks up deposits from floodplains. c. It causes rivers to divert. d. It causes river channels to change shape.

Why does air at 75% relative humidity and 30°C make your skin feel stickier than air at 75% relative humidity at 10°C? A. Warm air rises while cold air falls. B. The warmer air contains less water vapor per unit of volume. C.

When the two solutions are mixed, a clear solution with white powder at the bottom results., What has caused this change?

What receptor type is exemplified opening a channel to get sodium into the cell

What is the total amount of tissue of all organisms in a food chain called?

If an entire stack of rock layers has been folded, which of these would have occurred most recently?