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

Scientists use DNA sequencing to understand relationships among life on Earth. The chart illustrates differences between five species and humans. Although the DNA sequence of each may vary, all BUT ONE statement concerning the organisms is true.

What is an extremophile? Give an example

You capture several interesting insects from a population in your yard. by inbreeding, you develop true breeding strains that differ only in the shape of their wings - one strain has round wings while the other strain has oval wings.

Identify the 4 organic (carbon-based) biological macromolecules. Provide the building blocks (monomers) that make up these 4 macromolecules (polymers).

In terms of research design, an experiment is best used when you want to:

Can someone describe the main theories of intelligence

Which of these statements is correct about a theory? It cannot be contradicted. It is accepted by a few scientists. It does not explain observations. It can be changed by current evidence. i think its D but im not sure

3. Which organelles would exist, in higher numbers, in the following types of cells? a. White Blood Cell house b. Cardiac Muscle Cell House

Which layer of the atmosphere does all weather take place?

A salt is added to a solution of water. Which physical property of the water is most likely to change?