hw #1 and quiz #1

Question 1

while a runner is in a marathon, his or her liver will have to free some stored energy to keep blood sugar levels adequate; the liver will liberate this energy by way of a process called

Answer 1

glycogenolysis

Question 2

proteins are

Answer 2

polymers made up of amino acid monomers

Question 3

what statement accurately describes amino acids?

Answer 3

there are twenty varieties, with each type having a different R group

Question 4

the bond between adjacent amino acids is a(n)______bond

Answer 4

peptide

Question 5

all organic compounds contain______, hydrogen, and usually oxygen

Answer 5

carbon

Question 6

lipids

Answer 6

are a major component of the cell membrane

Question 7

what type of organic molecule comprises the majority of a potato?

Answer 7

polysaccharides

Question 8

chemical barriers composed of phospholipid bilayers form within biological systems because

Answer 8

hydrophobic exclusion results in the close positioning of the non polar tails

Question 9

fatty acids in soap have a polar end and a nonpolar end. which of the following best describes these molecules?

Answer 9

Amphipathic

Question 10

In the stable form of protein, what is generally oriented to the interior of the protein molecule?

Answer 10

Hydrophobic portions

Question 11

the helix that forms in a protein chain as a result of hydrogen bonds and other weak forces is an example of

Answer 11

secondary structure of protein

Question 12

what type of reaction occurs during protein synthesis to produce the primary structure of a protein?

Answer 12

dehydration synthesis

Question 13

the R group for alanine is -CH3. Therefore, alanine is a ______amino acid

Answer 13

non polar

Question 14

the primary sequence of a protein contains proline. what can you predict about its folded structure at that region?

Answer 14

there is a bend at that location

Question 15

Monosaccharides, disaccharides, and polysaccharides are examples of

Answer 15

carbohydrates

Question 16

visualizing the body in a ______ position is significant because all observers have a common point of reference when describing an discussing its regions.

Answer 16

anatomical or anatomic

Question 17

which plane divides the body into superior and inferior portions?

Answer 17

Transverse plane

Question 18

the visceral pleura______

Answer 18

covers the external surface of the lungs

Question 19

the brain is in the _______

Answer 19

cranial cavity

Question 20

the component of homeostasis, called the _____, is the sensory nerve body structure that detects changes in a variable, which is either the substances or process that is regulated

Answer 20

receptor

Question 21

in the homeostatic control mechanism, the _____ _____ is the structure that interprets input from the receptor and initiates changes through the effector.

Answer 21

control center

Question 22

characteristics of all living things

Answer 22

responsiveness to stimuli, reproduction, regulation of internal functions

Question 23

the _______ pericardium forms the hearts external surface

Answer 23

visceral

Question 24

true or false: sometimes a homeostatic imbalance occurs when a variable normally controlled by negative feedback is instead controlled by positive feedback

Answer 24

true

Question 25

Answer 25

pelvic cavity