Epithelial tissue covers the entire surface of many organisms. Which term describes the structure directly below tissues in the hierarchical organization of life?

A) atoms

B) cells

C) molecules

D) organs

What basic structural property of dna serves as a basis for most techniques used in genetic engineering?

What's the purpose of the pH scale

Which of the following provides a ready source of energy for daily activities? select one: a. carbohydrates b. proteins c. fats d. water

What is the process in which the pollen from one plant is used to fertilize another

In the absence of a cell membrane, the cell would not be able to A. make proteins B. control cellular activities C. communicate with other cells using hormones D. fight off disease

Water and soil pollution from oil and gas drilling is primarily what type of concern?

In the DNA chain the nitrogenous base adenine is combined with

Where would you find a stargazer? What did the Greeks call them and why? What do stargazers have to stun their prey? - What other mechanism do they have just behind the operculum and above the pectorals?

Gregor Mendel carried out a cross between two pea plants by taking pollen from a plant that was homozygous for round seeds and dusting the pollen onto the stigma of a plant homozygous for wrinkled seeds.

4 reasons why global warming is a problem