The Cell

Question 1

What cells are the true, defined nucleus?

Answer 1

Eukaryotic

Question 2

What parts do cells have in similarities in, in general?

Answer 2

plasma membrane
nucleus
endoplasmic reticulum
golgi apparatus
mitochondrion

Question 3

what are sheet-like structures composed primarily of lipids and proteins

Answer 3

plasma membrane

Question 4

what are plasma membranes held together by?

Answer 4

noncovalent interactions

Question 5

lacking an affinity for water is

Answer 5

hydrophobic

Question 6

having an affinity for water is

Answer 6

hydrophillic

Question 7

protein on the membranes serve as

Answer 7

pumps, gates, receptors, energy transducers, and enzymes

Question 8

True or False: membranes are asymmetrical

Answer 8

True

Question 9

Plasma membrane has greater _____ content owing to the presence of glycolipids and glycoproteins

Answer 9

CHO

Question 10

What is high in content and enhances the mechanical stability of the membrane and regulates its fluidity in plasma membrane

Answer 10

cholesterol

Question 11

What are the metabolic pathways that occur in the cytoplasmic matrix?

Answer 11

glycolysis
hexose monophosphate shunt
glycogenesis
glycogenolysis
fatty acid synthesis, (also nonessential unsaturated fatty acids)

Question 12

What is the primary site of oxygen use int eh cell?

Answer 12

the mitochondria

Question 13

What part of the cell is responsible for the most metabolic energy produced (ATP)?

Answer 13

mitochondria

Question 14

What cells don’t contain mitochondria?

Answer 14

erythrocyte

Question 15

what do erythrocyte cells depend on for energy?

Answer 15

anaerobic mechanisms, primarily glycolysis

Question 16

Krebs cycle and fatty acid oxidation are catalyzing reactions of the metabolic enzyme systems found in the

Answer 16

mitochondrial matrix

Question 17

Because of its DNA content, what initiates and regulates most cellular activities?

Answer 17

Nucleus

Question 18

What is located in the cytoplasm and is highly organized system of membranes,

Answer 18

the endoplasmic reticulum

Question 19

a dotted membranous surface w/ribosomes and looks speckled is the

Answer 19

Rouch endoplasmic reticulum

Question 20

a surface w/o ribosomes is called the

Answer 20

Smooth Endoplasmic reticulum

Question 21

What are intracellular membranes that are organized into tubules that collect cellular materials, merge with the cell membrane, and discharge their contents to the outside of the cell?

Answer 21

Golgi Apparatus

Question 22

What are lysosomes and peroxisomes filled with?

Answer 22

enzymes

Question 23

what is normally intracellular enzymes that are retained w/in the cell by the plasma membrane

Answer 23

leakage