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Flashcards in 2: The Chemistry of Life Deck (26):
0

Trace elements are _____.

elements that are required by organisms in very small quantities

1

Isotopes differ in the number of ________.

electrons

2

Non polar covalent;

Electrons shared equally between atoms

3

Electrons shared unequally in _____________ bond

polar covalent

4

High surface tension in thin vessels

Capillary action

5

_________ bonds are WEAK bonds

Hydrogen

6

Carbohydrates contain ___, ___ and ___ in a _:_:_ ratio.

Carbon; hydrogen; oxygen; 1; 2; 1

7

The two most common monosaccharide sugars are _____ and _____.

glucose and fructose

8

Glucose and fructose are easy to spot if you notice their ______.

six-carbon molecules

9

Bond between carbohydrates:

Glycosidic bond

10

Process of forming glycosidic bonds and losing a water molecule

Dehydration synthesis / condensation

11

Breaking up disaccharides and forming two monosaccharides with the addition of an H2O molecule

Hydrolysis

12

Starch, cellulose and glycogen are the most common _______.

polysaccharides

13

Building blocks of proteins are called ______.

Amino acids

14

Amino acids are made of an amino group (____), a carboxyl group (-COOH), a hydrogen, and an R group.

-NH2

15

Amino acids are made of an amino group (-NH2), a carboxyl group (____), a hydrogen, and an R group.

-COOH

16

Amino acids are made of an amino group (-NH2), a carboxyl group (-COOH), a ______, and an R group.

Hydrogen

17

Amino acids are made of an amino group (-NH2), a carboxyl group (-COOH), a hydrogen, and an _________.

R group

18

The r group is also called a ___________.

Side chain

19

Bond between amino acids (proteins):

peptide bonds

20

Examples of lipids:

Fats, oils, phospholipids, steroids

21

Triglyceride is another word for

fat.

22

A typical fat consists of __________ and ____________.

three fatty acids; one molecule of glycerol

23

The linkage formed between the glycerol molecule and the fatty acids are called _______.

ester linkage

24

A fatty acid can be _______, which means it has a single covalent bond between each pair of carbon atoms

Saturated

25

A fatty acid can be _______, which means adjacent carbons are joined by double bonds instead of single bonds.

Unsaturated