When chromosomes are duplicated before mitosis or meiosis, the amount of DNA in the

nucleus is tripled

What are two ecosystem services provided for humans by forests?

How do wetlands reduce flooding and erosion? (Site 1)

The two types of cell cycle genes that, if mutated, cause cancer cells to divide uncontrollably are called tumor suppressor genes and A. growth factors. B. proto-oncogenes. C. cancer genes. D. telomeres.

Historically, an unusual aspect of the recent rise in CO2 levels is that Select one: a. there is no known mechanism for its occurrence. b. CO2 reacts so quickly with other compounds that it should not be occurring. c.

What variations beside color can you think of that make a difference in a plant survival?

13. Excess salt is removed from the body through sweat glands in the skin, This is an interaction between systems.

a cell with 5% salt concentration is placed in a beaker with 1% salt concentration. what will happen to the cell over time

What are the roles of the nervous muscular circulatory and respiratory systems in heat regulation?

Which cell structures are seen in all cell types? Check all that apply. - DNA - cytoplasm - nucleus - ribosomes - cell membrane

The small blood vessels that deliver blood to and pick blood up from tissues are