Cell Key Terms

Question 1

active transport

Answer 1

form of transport across the cell membrane that requires input of cellular energy

Question 2

amphipathic

Answer 2

describes a molecule that exhibits a difference in polarity between its two ends, resulting in a difference in water solubility

Question 3

anaphase

Answer 3

third stage of mitosis (and meiosis), during which sister chromatids separate into two new nuclear regions of a dividing cell

Question 4

anticodon

Answer 4

consecutive sequence of three nucleotides on a tRNA molecule that is complementary to a specific codon on an mRNA molecule

Question 5

autolysis

Answer 5

breakdown of cells by their own enzymatic action

Question 6

autophagy

self) (eat

Answer 6

lysosomal breakdown of a cell’s own components

Question 7

cell cycle

Answer 7

life cycle of a single cell, from its birth until its division into two new daughter cells

Question 8

cell membrane

Answer 8

membrane surrounding all animal cells, composed of a lipid bilayer interspersed with various molecules; also known as plasma membrane

Question 9

centriole

Answer 9

small, self-replicating organelle that provides the origin for microtubule growth and moves DNA during cell division