What happens when the diaphragm contracts?

A. The rib cage moves down.

B. The volume of the thoracic cavity increases.

C. The diaphragm rises.

D. The volume of the thoracic cavity decreases.

What is the grain size of the sedimentary rock "chert"?

A scientist is examining a simple multicellular organism with a nucleus and specialized organelles that was found in a moist environment. What kingdom does this organism belong to? 1. Animalia 2. Archaebacteria 3. Edibacteria 4. Protista

Which combination of alleles best describes a sex-linked trait? a. heterozygous alleles b. homozygous alleles c. alleles that are carried on X and Y chromosomes d. alleles that are carried on somatic cells

At which stage of scientific inquiry would scientists find out if their hypothesis were supported by their data

Volcanoes are fairly evenly distributed all over the world true or false

How insulin binds to cells and the mechanism involved in triggering the cells to take in glucose?

The structure can only be found in a plant cell and not an animal cell

Why must experiments be repeated many times

Why is a nucleus found in both plant and animal cells?

Explain three disadvantages to using an electron microscope to view microorganisms.