Inside a Cell

Question 1

cell membrane

Answer 1

a thin envelope that regulates the entry and exit of various molecules found in the cell; the skin of the cell

Question 2

cytoplasm

Answer 2

the liquid phase of a cell that contains various organelles such as the nucleus, mitochondria and centrioles

Question 3

nucleus

Answer 3

center of the cell containing the “blueprints” of the cell

Question 4

chromatin

Answer 4

loosely coiled strands of DNA contained in the nucleus of cells that are not divided; suspended in the liquid phase of the nucleus

Question 5

nucleoplasm

Answer 5

the liquid phase of the nucleus

Question 6

nucleoli

Answer 6

one to four dark regions contained in the nucleus; Protein Synthesis

Question 7

nuclear membrane

Answer 7

the double layered membrane enclosing the nucleus of a cell; includes numerous pores that permit the movement of molecules between the nucleoplasm and the cytoplasm

Question 8

rough endoplasmic reticulum

Answer 8

organelle in the cytoplasm of a cell in which ribosomes are present and protein synthesis takes place

Question 9

ribosomes

Answer 9

rough surface projections attached to rough ERs

Question 10

smooth endoplasmic reticulum

Answer 10

structure identical to the rough ER without the presence of ribosomes; lipid and steroid synthesis

Question 11

Golgi apparatus

Answer 11

packages the protein release from the rough ER

Question 12

cytoplasmic secretory vesicles

Answer 12

formed by the Golgi apparatus; use for cellular use or export

Question 13

mitochondria

Answer 13

double-layered spherical structures that are the “powerhouse” of the cell because they release energy used to synthesize ATP molecules

Question 14

polyribosome

Answer 14

groups of ribosomes that are similar in structure and function to the ribosomes associated with the rough ER; float freely in the cytoplasm

Question 15

centrioles

Answer 15

present in cells capable of duplication; consist of tubules arranged at right angles to one another