Which term describes the difference in the concentrations of a substance across a cell's membrane?

a. Diffusion membrane

b. Concentration membrane

c. Concentration gradient

d. molcular concentration

Marcia reported the following symptoms to her physician: severe weight loss, increased anxiety, and sweating. After several tests, Marcia's physician determines that she has a very high basal metabolic rate and confirms Marcia's diagnosis as.

The inner core is probably responsible for the Earth's a. magnetic fields b. low density c. tides d. weather

Which describe colloids? Check all that apply. heterogeneous mixtures homogeneous mixtures may have a uniform appearance are made up of at least two substances will settle out over time

How is DNA prepared for cell division?

Which statement best describes the limits of science? A. Science cannot answer difficult questions. B. Science can answer only mathematical questions. C. Science cannot answer philosophical questions. D. Science can answer all questions.

What is one of the first things that is done when bones are discovered

What is it called wen a cell coming from the same cell become different types

Muscle fibers can be divided into two main types or categories (i. e., Type I and Type II) based on what distinction: a. thickness of myofilaments b. angle of cross bridges c. time to reach maximum tension d. abundance of striation

What is the definition of habitat a. a unique role of an organism in its ecosystem b. a place where an organism lives and gets its resources c. a set of organisms working with each other and their environment

During the translation of mRNA molecules, the new polypeptides are often directed to specific parts of the cell by the presence or absence of short sequences of amino acids called signal peptides.