Test 1 Lecture

Question 1

Nonpolar

Answer 1

equally sharing electrons

Question 2

polar

Answer 2

not equally sharing electrons- electron hogs like oxygen

Question 3

bond between two molecules

Answer 3

hydrogen

Question 4

Covalent bonding

Answer 4

sharing between atoms

Question 5

Oxygen

Answer 5

is an electron hog

Question 6

S and N

Answer 6

are also electron hogs

Question 7

Ion

Answer 7

an atom that has neither gained or lost electrons

Question 8

Ionic bonding

Answer 8

electrons are not shared. One atom loses electrons while the other gains

Question 9

Symmetric structural formulas

Answer 9

are almost always nonpolar (equal)

Question 10

Atomic mass

Answer 10

will be under the formula name with a decimal

Question 11

Number of electrons

Answer 11

is the element number

Question 12

How many electrons are in the Ca+2 ion?

Answer 12

18 electrons since the atomic number is 20 and it lost 2 electrons

Question 13

Bulk element

Answer 13

an element we need to survive in large amounts ie hydrogen

Question 14

trace element

Answer 14

an element we need to survive in small amounts

Question 15

olive oil?

Answer 15

hydrophobic

Question 16

kool aid

Answer 16

hydrophillic

Question 17

caffiene

Answer 17

hydrophillic

Question 18

a fat soluble vitimin

Answer 18

hydrphobic

Question 19

amphipathic

Answer 19

both hydrophobic and hydrophillic

Question 20

What do the partial positive and partial negative signs mean? Why is oxygen partially negative and hydrogen partially positive?

Answer 20

The partial negative sign on oxygen means that the electrons found in the polar covalent bond shared between Hydrogen and Oxygen are traveling around oxygen more than around hydrogen. This imparts a partial negative charge on oxygen since electrons are negatively charged. The partial positive charge on hydrogen means that the electrons are not traveling as much around hydrogen.

Question 21

Why is oxygen negative and not positive?

Answer 21

Why is oxygen negative and not positive?

Question 22

Which is more acidic a ph or 7 or 5?

Answer 22

5, the smaller the number the more acidic

Question 23

Why is oxygen negative and not positive?

Answer 23

solution b has a higher concentration of ions than A

Question 24

Solution “C” has a pH of 6 and solution “D” has a pH of 5. Which solution is more acidic and by what factor?

Answer 24

5 is more acidic

Question 25

ph of water?

Answer 25

7

Question 26

When a protein is denatured what changes?

Answer 26

everythign but the primary source

Question 27

can denatured proteins perform their natural functions?

Answer 27

no

Question 28

The sugar ribose is found in…

Answer 28

neucleotides

Question 29

What is the major structural difference between starch and glycogen?

Answer 29

D) the amount of branching that occurs in the molecule

Question 30

. What does the term insoluble fiber refer to on food packages?

Answer 30

cellulose

Question 31

A glycosidic linkage (two sugars bound together) is analogous to which of the following in proteins?

Answer 31

a peptide bond

Question 32

Phospholipids and triglycerides both

Answer 32

have a glycerol backbone

Question 33

Phospholipids

Answer 33

glycerol + Phosphate + base + 2 fatty acids

Question 34

Triglycerides

Answer 34

glycerol + 3 fatty acids

Question 35

The chemical reaction illustrated below

Answer 35

results in a peptide bond

Question 36

is cellulose a mono, di, or polysacccaride?

Answer 36

poly

Question 37

Sucrose a mono, di, or polysacccaride?

Answer 37

di

Question 38

can humans break down chitin for energy?

Answer 38

No it is a plant sugar

Question 39

is glucose a mono, di, or polysacccaride?

Answer 39

mono

Question 40

Describe the difference between a tri-di- and monoglyceride.

Answer 40

The “glyceride” part of triglyceride, diglyceride and monoglyceride, comes from the fact that all glycerides are made from one glycerol molecule (oftentimes called the glycerol backbone). The mono-, di-, and tri- part comes from the number of fatty acids that you stick on to the glycerol backbone. A monoglyceride has the glycerol backbone plus one fatty acid. A diglyceride has two fatty acids stuck on to the glycerol backbone and a triglyceride has three fatty acids stuck on to the glycerol backbone.

Question 41

saturated fats

Answer 41

are easier to stack and hold their shape better

Question 42

Acidosis

Answer 42

blood too acidic, causes hypo ventilation/diarrhea

Question 43

Alkalosis

Answer 43

blood too basic causes vomiting and hyperventilation