o chm and bio

Question 0

When comparing saturated and unsaturated fats, the unsaturated fats have______ and are ______ at room temperature?

Answer 0

Cis dbl bonds and liquids

Question 1

the sex hormones estrogen, progesterone, and testosterone belong to which class of molecules?

Answer 1

Lipids - the sex hormones are lipids bcuz of their insolubility in H2O

Question 2

which of the following is a polymer?

1)Glucose 2)Cellulose 3) Triacylglycerol 4) Fructose

Answer 2

Cellulose

Question 3

Nitrogen bases are classified as either purines or pyrimidines. ex of purines are?

Answer 3

Adenine and Guanine

Question 4

_____ is always involved in hydrolysis

Answer 4

Water

Question 5

Sugars are molecules tht have _____ C:H:O and are called _____?

Answer 5

1:2:1 ratio of; carbohydrates

Question 6

The components of nucleic acids are _____?

Answer 6

Nitrogenous base, a pentose sugar, and phosphate

Question 7

What type of bond forms while joining monomers?

Answer 7

covalent

Question 8

At a conference, the speakers grand finale was sauteing mealworms. they wer crunchy because their exoskeletons contain polysacchride _____?

Answer 8

Chitin

Question 9

Which type of protein shields a newly forming protein from cytoplasmic influences while its folding into its funtional form?

1) Antibodies 2) Receptor proteins 3) Enzymes 4) Fibrous proteins
5) Chaperonins

Answer 9

Chaperonins

Question 10

A polysaccharide is used for storing energy in human muscle and liver cells is?

Answer 10

Glycogen

Question 11

In dehydration synthesis rxn, _____ is always formed as a by product to the rxn?

Answer 11

water

Question 12

Sickle-cell anemia is a disease tht is caused by ______ in the _______ of the protein?

Answer 12

a single amino acid change; primary structure

Question 13

The secondary structure of a peptide backbone is stabilized by _______ forming either ______ or a ______?

Answer 13

H-Bond; alpha helix; beta pleated sheet

Question 14

the sequence of aminos acids in a protein are called _____ structure of the protein?

Answer 14

Primary

Question 15

One characteristic shared by sucrose, lactose, and maltose is tht _____?

Answer 15

they all are disaccharides

Question 16

What are the four main classes of macromolecules , molecules of life?

Answer 16

Carbohydrates, Nucleic acids, Proteins, Lipids

Question 17

In living organisms, DNA exists as a ______ with the strand(s) ______?

Answer 17

dbl helix , running antipar

Question 18

In living organisms, DNA exists as a _____ with the strand(s) _____?

Answer 18

Dbl helix, running antiparellel

Question 19

the lipids tht form the main structural component of cell membranes are?

Answer 19

Phospholipids

Question 20

sugars have a ____ grp tht interacts with a _____ grp tht forms ring structures wen the dry molecule is placed in H2O.

Answer 20

Carbonyl R-C=O. hydroxyl R-OH

Question 21

Protein molecules are polymers (chains) of _____?

Answer 21

Amino acid molecules

Question 22

Carbohydrates are used in our bodies mainly for ______?

Answer 22

Energy storage and release

Question 23

the molecule with 4 fused rings tht is found in animal membranes and is the precursor of vertebrate sex hormones is _____?

Answer 23

Cholesterol

Question 24

The tertiary structure of a protein includes all of the following interactions except _____ bonds.
1) Disulfide bridge 2) Hydrophobic 3) Ionic 4) Hydrophilic 5) Peptide

Answer 24

Peptide

Question 25

The proper 3D shape and folding of a protein is assisted by _____?

Answer 25

Molecules called Chaperonis

Question 26

A shortage of phosphorus in the soil would make it especially difficult for plants to manufacture ____?

Answer 26

DNA