The hormone adrenaline can affect only cells with

1. appropriately shaped receptors

2. the appropriate antibodies

3. Ribosomes that produce adrenaline

4. genes that break down adrenaline

Which of the following correctly describes a way in which Earth's atmosphere interacts with the geosphere? It contains gases that living organisms breathe. It contains gases that trap incoming solar radiation.

In angiosperms, each pollen grain produces two sperm. what do these sperm do?

Which of the following transports oxygen in the blood? a. eryhtrocytes b. leukocytes c. platelets d. albumin

What is density and what does it tell you about a substance

How does temperature affect crickets chirp

The big chunks of earth's crust (plates) slowly moved around. This is called?

N your own words, describe an interaction between the hydrosphere and the geosphere

what are three functions that are directly controlled by the cell membrane

Which process occurs the same number of times in both mitosis and meiosis?

What are small bodies composed of rna and protein that function as protein factories called?