Biology of Cell - prac test 2

Which of the following would probably not be affected when a protein is denatured? 1) primary structure 2) secondary structure 3) hydrogen bonds 4) tertiary structure 5) all of the above must be affected for the protein to be denatured

1) Primary Structure

Most carbohydrates are readily digestible by animals. The exception is: 1) cellulose 2) glycogen 3) maltose 4) starch 5) sucrose

1) cellulose

Which of the following is a polymer of beta glucose with 1-4 linkages? 1) cellulose 2) starch 3) glycogen 4) maltose 5) chitin

1) cellulose

All of the following molecules are carbohydrates EXCEPT: 1) lactose 2) cellulose 3) haemoglobin 4) glycogen 5) starch

3) Haemoglobin

All of the following bases are found in DNA EXCEPT: 1) thymine 2) adenine 3) uracil 4) guanine 5) cytosine

3) Uracil

The bonds in protein molecules are? 1) covalent bonds 2) hydrogen bonds 3) peptide bonds 4) all of the above bonds

4) all of the above bonds

Which of the following ranks the molecules in the correct order by size? 1) water......sucrose......glucose.......protein 2) protein......water......glucose......sucrose 3) water......protein......sucrose......glucose 4) protein......sucrose.....glucose......water 5) glucose......water......sucrose......protein

4) protein, sucrose, glucose, water

Which of the following do nucleic acids and proteins have in common? 1) They are both made of amino acids. 2) Their structures contain sugars. 3) They are hydrophobic. 4) They are large polymers. 5) They each consist of four basic kinds of subunits.

4) they are large polymers

The characteristic that all lipids have in common is? 1) they are all made of fatty acids and glycerol 2) they all contain nitrogen 3) none of them is very high in energy content 4) they are all acidic when mixed with water 5) none of them dissolves in water

5) none of them dissolves in water

Which statement about carbon skeletons is "incorrect" ? 1) The skeleton can have double bonds, which can vary in location 2) Some carbon skeletons are arranged in rings 3) Skeletons may be branched or unbranched 4) Carbon skeletons can vary in length 5) The carbons can vary in the number of covalent bonds

5) the carbons can vary in the number of covalent bonds

Triacylglycerol

A lipid made of three fatty acids and glycerol

What membrane-surface molecules help cells recognize each other?

Carbohydrates

Every amino acid contains at least one amino group and at least one?

Carboxyl group

The bond formed between a glucose molecule and a fructose molecule in the synthesis of a molecule of sucrose is called a

Glycosidic bond

The four most common elements in the human body are

H, N, C and O

In a condensation (synthesis) reaction, ________, and in this process water is __________.

Monomers are assembled to produce a polymer.....produced

The building blocks of nucleic acid molecules are called?

Nucleotides

The primary structure of a protein involves?

Peptide bonds only

Monosaccharides with 5 or more carbon molecules can exist in ......... form as well as in linear conformation?

Ring form

The major purpose of RNA is to?

function in the synthesis of proteins