Ch 3- self test Flashcards
The internal living material of the cell is called:
cytoplasm
The outer boundary of a human cell is called the:
plasma membrane
A major function of the plasma membrane is to:
control what enters and leaves the cell.
An organelle is a:
tiny structure found in the cytoplasm.
Ribosomes are organelles that:
float in the cytoplasm and attach to the endoplasmic reticulum.
The interior of this organelle contains various kinds of enzymes capable of breaking down all of the main components of the cell.
Lysosome
This organelle is involved in processing and packaging proteins for export out of the cell.
Golgi apparatus
Often referred to as the “power plant” of the cell, this organelle is the site of ATP production.
mitochondria
Diffusion can be defined as:
the net movement of molecules from a region of higher concentration to a region of lower concentration
Diffusion moves:
down a concentration gradient.
Osmosis can be defined as:
the passive movement of water molecules from a region of higher concentration to a region of lower concentration.
Which of the following is an active transport process?
Pinocytosis
The cell process that involves microorganisms or other large particles being engulfed is called:
phagocytosis
The component that distinguishes one nucleotide from another is the:
nitrogen base.
RNA makes proteins by:
translation
