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

What was the basic proposal in the bohr model of an atom?

In constructing an oligonucleotide probe based on information from a protein's sequence, one often chooses, if possible, regions of a sequence containing tryptophan or methionine residues. Why?

4. Deduce how two genes for different traits that are on the same chromosome can fail to be inherited together.

Hormones are chemical substances produced in one organ that are released into the bloodstream and affect the function of a target organ to respond to a particular hormone, it must? have receptors that recognize and bind the hormone molecule.

Which of the following are fossil plants? a. pterosaurs and plesiosaurs b. trilobites and eurypterids c. graptolites and archaeocyathids d. gymnosperms and angiosperms

The term for the type of mutation that results in a loss of material from the genome is

What 2 characteristics of earth allow for water to exist as soild, liquid and gas on the planet

F blood is in short supply, which blood type would be the most beneficial to have on hand if someone needed a blood transfusion?

Australia has an abundance of natural resources, so they are able to export a lot of goods true or false

Explain why each of the following facts might make accurate classification of a species difficult a) some plants reproduce asexually b) many duck species interbreed to produce fertile offspring