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

The definition of multicellular

Why were US parks originally developed?

A cell with a 1.5% solute concentration is placed in a 3.5% solute concentration solution. Water will

Which is an example of a pandemic? A whooping cough B Black Death C smallpox D diabetes

Plants store glucose as starch because: a. starch is soluble in water b. starch is insoluble in water c. animals cannot digest starch d. starch can be washed away by rain e. starch holds more energy per gram

Suppose that a species of fish has split into two populations in a lake: one on the eastern side and one on the western side. How could you determine whether the two populations constitute different species? A.

Organisms interact with their environments, exchanging matter and energy. for example, plant chloroplasts convert the energy of sunlight to

What is the function on an ovary in a flower?

You are a chicken breeder interested in developing new hybrids that have many of the genes from the original ancestor birds. what should you breed your birds with

He use of the isotope 32p as a tracer element in the study of invasion and lysis of bacteria by viruses has shown that