List three characteristics of a virus.

Which is not true regarding the spleen? a. it has an outer cortex and inner medulla. b. it is divided into sections by capsular extensions called trabeculae. c. its white pulp consists of lymphatic cells?

The mutagens that result in cancer damage DNA by

Match each rock with the environment in which it most likely formed. coal marine shale cred beds dmarine sandstone

Some salmon have been genetically engineered to grow more quickly. the salmon are raised in pens set in rivers or in the sea. decsribe how these salmon might impact society and the environment

How does the trachea work with other systems to keep the body healthy?

Can life subsist on anything else but water?

What are the effect of a greater number of cysteine amino acids on the stability of the proteins?

Explain how the nucleolus, ribosomes, endoplasmic reticulum, Golgi apparats function together in protein synthesis.

Which statement is true about the scientific method

what would most likely happen to a person who had a shortage of lactase?