During which period of the Paleozoic Era did the largest mass extinction occur? A. Permian B. Devonian C. Cambrian D. Carboniferous

Why does the thermosphere have the highest temperature of all the atmosphere layers?

Which is the most common type of arthritis, resulting from wear and tear of joints over the years?

Question7:Indicate whether the following statements are TRUE or FALSE. If a statement is false, explain why it is false. A. DNA molecules, likeproteins, consist of a single, long polymeric chain that is assembled from small monomeric subunits. B.

Sharron did an experiment where she investigated how container size affected the growth rate of maple trees what is the independent variable in her experiment?

A scientist working in a lab wants to determine the precise pH of a solution. Which tool should the scientist use to measure pH?

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