Mod 5 Study Guide Flashcards Preview

Biology > Mod 5 Study Guide > Flashcards

Flashcards in Mod 5 Study Guide Deck (21):
1

Saturated Fat

A lipid made from fatty acids that have not double bonds between carbon atoms

2

Physical Change

A change that affects the apperance but not the chemical makeup of a substance

3

Model

An explanation or representation of something that cannot be seen.

4

Isomers

Two different molecules that have the same chemical formula

5

What determines the properties of a protien?

The sequence of the amino acids

6

What holds the two helixes in DNA together

Hydrogen Bonding

7

Two atoms have the same number of neutrons but different numbers of protons. Do they belong to the same element?

No

8

The element sulfur is comprised of all atoms that have 16 protons. How many neutrons are in sulfur-34?

18

9

How many total atoms are in one molecule of C22H44O?

66 atoms

10

Identify the following as an atom, element, or molecule:

P

element

11

When you boil water, are you causing a chemical change or physical change?

Physical Change

12

Two solutions of diferent solute concentration are seperated by a membrane. After 1 hour, the solutions are equeal concentrations and the water levels are the same as when the experiment started. Is this an example of diffusion or osmosis?

diffusion

13

In the following equation:

C3H8 + 5O2 ----> 3CO2 + 4H2O

Is CO2 a product or a reactant?
How many molecules of it are involved in the reaction?

CO2 is a product

3 molecules are involved.

14

What four things are necessary for photosynthesis?

energy, catalyst, carbon dioxide and water

15

If the following molecule is a carbohydrate, what is the value of x? C4HxO6

x = 12

16

If you perform hydrolysis on a disaccharide, what kind of molecule will you get?

a monosaccharide

17

The PH of there solutions is measured. Solution A has a ph of 11.5; the ph of solution B is 8.0 and solution C has a PH of 1.2. Which slution or solutions are acidic

Solution C

18

Identify the following as an atom, element, or molecule:

N2

molecule

19

Identify the following as an atom, element, or molecule:


Oxygen-16


atom

20

Identify the following as an atom, element, or molecule:

PH3


molecule

21

Know what an unsturated fatty acid molecule looks like.

At least one double bond between carbons