Quiz 1

Question 1 of 30

1

A hydroxyl group is

Select one of the following:

also called a carbonyl group.
characteristic of proteins.
characteristic of alcohols.
composed of two oxygen atoms.

Explanation

Question 2 of 30

1

Which of the following is a carboxyl group?

Select one of the following:

-C-O
-OH
-NH2
-COOH

Explanation

Question 3 of 30

1

Which of the following is an amino group?

Select one of the following:

-OH
-NH2
-COOH
-CO

Explanation

Question 4 of 30

1

Which of the following statements about the monomers and polymers found in living organisms is false?

Select one of the following:

Cells typically make all of their macromolecules from a set of 40-50 common monomers and a few other ingredients that are rare.
The monomers used to make polymers are essentially universal.
Monomers serve as building blocks for polymers.
Monomers are joined together by the process of hydrolysis.

Explanation

Question 5 of 30

1

The results of dehydration synthesis can be reversed by

Select one of the following:

condensation.
hydrolysis.
polymerization.
the addition of an amino group.

Explanation

Question 6 of 30

1

A molecule with the formula C55H110O55 is probably a(n)

Select one of the following:

oil.
steroid.
protein.
polysaccharide.

Explanation

Question 7 of 30

1

Cellulose differs from starch in that

Select one of the following:

starch is formed by plants and cellulose by animals.
most animals cannot break down cellulose, whereas starch is easily digested.
starch is made of glucose monomers, whereas cellulose is made of fructose monomers.
cellulose is highly branched, whereas starch is unbranched.

Explanation

Question 8 of 30

1

Foods that are high in fiber are most likely derived from

Select one of the following:

plants.
dairy products.
red meats.
fish.

Explanation

Question 9 of 30

1

The storage form of carbohydrates is in animals and in plants.

Select one of the following:

starch; glycogen
glycogen; starch
cellulose; glycogen
glycogen; cellulose

Explanation

Question 10 of 30

1

Which of the following organisms contain the polysaccharide chitin?

Select one of the following:

animals and plants
plants and bacteria
fungi and insects
insects and plants

Explanation

Question 11 of 30

1

An oil may be converted into a substance that is solid at room temperature by

Select one of the following:

adding hydrogens, decreasing the number of double bonds in the molecules.
removing water, causing a dehydration synthesis reaction to occur.
removing hydrogens, increasing the number of double bonds in the molecules.
cooling it, so that double bonds form and the fats solidify.

Explanation

Question 12 of 30

1

A diet high in animal products and hydrogenated vegetable margarine may increase the risk for atherosclerosis. This is because

Select one of the following:

most animal fats are unsaturated and most hydrogenated vegetable margarines contain high levels of steroids.
most hydrogenated vegetable margarines are hydrogenated oils and most animal products contain high levels of phospholipids.
most animal fats are used for energy storage and most hydrogenated vegetable margarines contain high levels of unsaturated fats.
most animal fats are saturated and many hydrogenated vegetable margarines contain high levels of trans fats.

Explanation

Question 13 of 30

1

What feature of fats makes them hydrophobic?

Select one of the following:

Fats have carboxyl groups.
Fats include one glycerol molecule.
Fats have polar fatty acids.
Fats have nonpolar hydrocarbon chains.

Explanation

Question 14 of 30

1

If you were to add olive oil to your food as part of a diet to lower your risk of atherosclerotic disease, you would use olive oil that

Select one of the following:

is liquid at room temperature.
is hydrogenated.
is modified to be solid at room temperature.
has lard added to it.

Explanation

Question 15 of 30

1

Amino acids can be distinguished from one another by

Select one of the following:

the number of R groups found on the amino acid molecules.
the chemical properties of their R groups.
the type of bond between the R group and the rest of the amino acid molecule.
the chemical properties of their amino and carboxyl groups.

Explanation

Question 16 of 30

1

Glucose molecules are to starch as ________ are to proteins.

Select one of the following:

oils
amino acids
fatty acids
monosaccharides

Explanation

Question 17 of 30

1

Proteins cannot be denatured by

Select one of the following:

heat.
changes in pH.
changes in salt concentration.
freezing.

Explanation

Question 18 of 30

1

How are genes used by cells to build proteins?

Select one of the following:

The genes in DNA direct the synthesis of an RNA molecule, which is used to build a protein.
The genes in RNA direct the synthesis of a DNA molecule, which is used to build a protein.
DNA is transcribed into an amino acid sequence.
The genes in RNA direct the synthesis of proteins directly.

Explanation

Question 19 of 30

1

Which of the following options correctly pairs a polymer and its monomer?

Select one of the following:

cellulose, amino acids
DNA, nucleotides
collagen, nucleic acids
RNA, ribose

Explanation

Question 20 of 30

1

You work for a company that manufactures food products. A new "wonder food" is being distributed by a rival company. The researchers in your company determine that the "wonder food" contains only carbon, oxygen, and hydrogen. At this point, your researchers can say with certainty that the food

Select one of the following:

includes proteins.
could only be made of triglycerides.
could only be made of carbohydrates.
does not include proteins or nucleic acids.

Explanation

Question 21 of 30

1

If you ate a 100% plant-based (vegan) diet, what molecule would you never eat?

Select one of the following:

starch
cellulose
cholesterol
phospholipids

Explanation

Question 22 of 30

1

Which meal is high in fiber, low in saturated fats, and high in unsaturated fats?

Select one of the following:

a rib eye steak, mashed potatoes, and side salad with ranch dressing
a plate of scrambled eggs with a side of cottage cheese
a black bean, cheese, lettuce, and sour cream burrito in a flour tortilla
a bowl of spaghetti tossed with olive oil, artichokes, and broccoli

Explanation

Question 23 of 30

1

You identify a molecule in a pizza that is a polymer; has oxygen, hydrogen, and sulfur atoms; and is hydrophilic. What kind of molecule is it?

Select one of the following:

protein
carbohydrate
nucleic acid
lipid

Explanation

Question 24 of 30

1

Suppose that an adult black bear adds 50 pounds of fat in order to survive while hibernating through the winter. How much glycogen would a bear have to add to achieve a similar feat?

Select one of the following:

25 pounds
50 pounds
75 pounds
100 pounds

Explanation

Question 25 of 30

1

You have a cup of vegetable oil and a vial full of normal phospholipids. What would you predict would happen if you dropped the phospholipids into the cup of vegetable oil?

Select one of the following:

The phospholipids would form a sphere with the heads on the inside.
The phospholipids would form a sphere with the tails on the inside.
The phospholipids would float on the surface of the oil with the tails in the air.
The phospholipids would float on the surface of the oil with the heads in the air.

Explanation

Question 26 of 30

1

What is the complementary sequence to the DNA strand TCGATGG?

Select one of the following:

TCGATGG
GGTAGCT
AGCUACC
AGCTACC

Explanation

Question 27 of 30

1

Myosin is a contractile protein found in muscles that is composed of three pairs of subunits, two heavy chains, and two pairs of two different types of light chains, for a total of six subunits. Myosin contains what level(s) of protein structure?

Select one of the following:

primary
primary and secondary
primary, secondary, and tertiary
primary, secondary, tertiary, and quaternary

Explanation

Question 28 of 30

1

These two molecules are structural isomers. What is the difference between them?

Select one of the following:

the number of carbon atoms
the number of hydrogen atoms
the location of a double-bonded oxygen atom
Only one of them has a double bond between carbon atoms.

Explanation

Question 29 of 30

1

Below are the structures of three fatty acids, palmitic acid, stearic acid, and oleic acid. What combination of these fatty acids could you use to make a fat that is liquid at room temperature?

Select one of the following:

one palmitic acid, one stearic acid, and one oleic acid
three palmitic acids
two palmitic acids and one stearic acid
one stearic acid, one oleic acid, and one phosphate group

Explanation

Question 30 of 30

1

Below is a molecule of caffeine. Which of the following features are not present in a molecule of caffeine?

Select one of the following:

a carbonyl group
a carboxyl group
a methyl group
one or more double bonds

	Created by Vui Fui Vun about 2 years ago

Biology Quiz on Quiz 1, created by Vui Fui Vun on 21/04/2022.

Quiz 1

Question 1 of 30

A hydroxyl group is

Select one of the following:

Explanation

Question 2 of 30

Which of the following is a carboxyl group?

Select one of the following:

Explanation

Question 3 of 30

Which of the following is an amino group?

Select one of the following:

Explanation

Question 4 of 30

Which of the following statements about the monomers and polymers found in living organisms is false?

Select one of the following:

Explanation

Question 5 of 30

The results of dehydration synthesis can be reversed by

Select one of the following:

Explanation

Question 6 of 30

A molecule with the formula C55H110O55 is probably a(n)

Select one of the following:

Explanation

Question 7 of 30

Cellulose differs from starch in that

Select one of the following:

Explanation

Question 8 of 30

Foods that are high in fiber are most likely derived from

Select one of the following:

Explanation

Question 9 of 30

The storage form of carbohydrates is ________ in animals and ________ in plants.

Select one of the following:

Explanation

Question 10 of 30

Which of the following organisms contain the polysaccharide chitin?

Select one of the following:

Explanation

Question 11 of 30

An oil may be converted into a substance that is solid at room temperature by

Select one of the following:

Explanation

Question 12 of 30

A diet high in animal products and hydrogenated vegetable margarine may increase the risk for atherosclerosis. This is because

Select one of the following:

Explanation

Question 13 of 30

What feature of fats makes them hydrophobic?

Select one of the following:

Explanation

Question 14 of 30

If you were to add olive oil to your food as part of a diet to lower your risk of atherosclerotic disease, you would use olive oil that

Select one of the following:

Explanation

Question 15 of 30

Amino acids can be distinguished from one another by

Select one of the following:

Explanation

Question 16 of 30

Glucose molecules are to starch as ________ are to proteins.

Select one of the following:

Explanation

Question 17 of 30

Proteins cannot be denatured by

Select one of the following:

Explanation

Question 18 of 30

How are genes used by cells to build proteins?

Select one of the following:

Explanation

Question 19 of 30

Which of the following options correctly pairs a polymer and its monomer?

Select one of the following:

Explanation

Question 20 of 30

The storage form of carbohydrates is in animals and in plants.