What two things form the vertical side pieces of the ladder?

All living and nonliving things are made up of which of the following? A. Cells B. Atoms C. Water D. Minerals

How does cell size affect the rate of diffusion of materials in a cell?

Water (H2O), carbon dioxide (CO2), and oxygen (O2) are all quite small molecules, yet they move across cell membranes differently.

Who started the field of ecology

According to the guidelines for standard precautions, the caregiver's hands should be washed: a. after touching any body fluids or contaminated items, regardless of whether gloves are worn. b.

Tips of eukaryotic chromsomes are known as

Which of the following distinguishes cellulose from starch

Which numbers identify the organelles that are present in BOTH plant and animal cells? A) 1, 2, 6 B) 1, 5, 4 C) 1, 6, 5 D) 1, 5, 2

What is directly responsible for an acquired trait

Which statement best describes a physical change? Changes can occur to certain chemical properties of the substance, but the overall shape of the substance will remain the same.