12. A group of elements that has two electrons in its outer energy level is the

a. alkaline earth metals

c. alkali metals

b. halogens

d. actinides

Describe 3 imaging tools you may use to look at small molecules

Describe classification as a work in progress

What is a concentration gradient? what does it mean if a molecule diffuses down it's concentration gradient?

What is a primary disturbance?

Which is likely to experience more damage during an earthquake, a house built on a solid rock ledge or a nearby house built on a soil river bank? Explain your answer.

One of the primary functions of DNA in cells is to A. Serve as a storage firm for unused nucleotides B. Occupy space in the nucleus to keep the nucleus from collapsing C. Copy itself exactly for new cells

What feature do lymphatic vessels share with veins that allows lymph to flow in only one direction?

The negative stain is used to the negative stain is used to determine cell size. visualize endospores. determine flagella arrangement. visualize the outer membrane. determine gram reaction.

The visible part of the ear has the ability to stretch significantly, and then recoil back to its original position. Which protein fiber must be present?

Which cellular process takes place in the ribosome that are bound to the endoplasmic reticulum