Dr. Shmaefsky
Biology 1408
Quiz 1

Place all answers on the Scantron sheet
Include include your name and section number
Name___________________________________

MULTIPLE CHOICE.  Choose the one alternative that best completes the statement or answers the question. 

1) 

A hypothesis 

1) 

_______ 

A) 

is an explanatory idea that is broad in scope and supported by a large body of evidence. 

B) 

is a tentative explanation for a specific phenomenon. 

C) 

is the same as a theory. 

D) 

is a widely accepted idea about a phenomenon. 

E) 

is a widely accepted theory that is broad in scope and supported by a large body of evidence. 

2) 

If a light switch is moved from the "off" to the "on" position, and you then claim that the light will go n. Your claim is 

2) 

_______ 

A) 

is likely result of deductive reasoning. 

B) 

is a prediction. 

C) 

is a hypothesis 

D) 

can be tested. 

E) 

All of the choices are correct. 

3) 

A scientist performs a controlled experiment.  This means that 

3) 

_______ 

A) 

the experiment proceeds at a slow pace to guarantee that the scientist can carefully observe all reactions and process all experimental data. 

B) 

the experiment is repeated many times to ensure that the results are accurate. 

C) 

two experiments are conducted, one differing from the other by only a single variable. 

D) 

one  experiment is conducted measuring many variables 

E) 

one experiment is performed, but the scientist controls the variables. 

4) 

Consider the following statement "If all vertebrates have backbones, and turtles are vertebrates, then turtles have backbones." This statement is an example of 

4) 

_______ 

A) 

a hypothesis. 

B) 

discovery science logic. 

C) 

deductive reasoning. 

D) 

rationalization. 

E) 

an observation. 

5) 

One major role of a control in an experiment is to 

5) 

_______ 

A) 

provide a basis of comparison to the experimental group. 

B) 

ensure repeatability. 

C) 

prove that a hypothesis is statistically correct 

D) 

prove that a hypothesis is based on deduction 

E) 

None of the choices are correct. 

6) 

Which one of the following is true of most living systems 

6) 

_______ 

A) 

have RNA as the genetic material. 

B) 

grow and move 

C) 

maintain homeostasis 

D) 

respond to changes in the environment. 

E) 

have complex body systems 

7) 

Before they attempt to understand the properties of molecules, scientists first try to understand the atoms found in the molecules. This illustrates 

7) 

_______ 

A) 

an existential approach to science. 

B) 

a reductionist or mechanistic approach to science. 

C) 

a holistic approach to science. 

D) 

the emergent properties of matter. 

E) 

that the whole is greater than the sum of its parts. 

8) 

Which one of the following is a limiting element in the human body? 

8) 

_______ 

A) 

iodine 

B) 

nitrogen 

C) 

zinc 

D) 

manganese 

E) 

fluorine 

9) 

The five most common elements in living organisms are 

9) 

_______ 

A) 

C, N, O, Ca 

B) 

C, H, O, Na 

C) 

C, N, O, Na, 

D) 

C, H, O, N, 

E) 

C, S, O, Fe 

10) 

A molecule 

10) 

______ 

A) 

is exemplified by sodium. 

B) 

is a pure element. 

C) 

is less common than a pure element. 

D) 

contains two or more elements  bonded together 

E) 

is a solution. 

11) 

The stability of the atom's nucleus  is mostly due to the number of 

11) 

______ 

A) 

electrons. 

B) 

neutrons 

C) 

protons. 

D) 

protons and electrons. 

E) 

orbitals 

12) 

A radioactive isotope is one that 

12) 

______ 

A) 

has the same atomic mass, but a different atomic number than the common variant of the element. 

B) 

is stable. 

C) 

has more protons than the common variant of the element. 

D) 

decays. 

E) 

has more electrons than the common variant of the element. 

13) 

Which of the following statements about radioactive isotopes is/are true? 

13) 

______ 

A) 

The tracers typically used for diagnosing medical problems remain radioactive in the body for a number of years, but give off very low levels of radioactive energy. 

B) 

The nuclei of radioactive isotopes are unusually stable, but the atoms tend to lose electrons. 

C) 

The energy produced by radioactive decau can break chemical bonds and cause molecular damage in cells. 

D) 

When given a choice between radioactive and nonradioactive isotopes of the same atom, living cells are more likely to incorporate the radioactive isotopes into their structures. 

E) 

none of the choices are true. 

14) 

Table salt and glass are formed of  

14) 

______ 

A) 

covlaent bonds 

B) 

hydrogen bonds 

C) 

metallic bonds 

D) 

bipolar bonds 

E) 

ionic bonds 

15) 

The molecules of living organisms are typically formed of  

15) 

______ 

A) 

bipolar bonds 

B) 

metallic bonds 

C) 

hydrogen bonds 

D) 

ionic bonds 

E) 

covalent bonds 

16) 

The following type of bond acts like glue or Velcro in the body 

16) 

______ 

A) 

bipolar bonds 

B) 

covlaent bonds 

C) 

ionic bonds 

D) 

metallic bonds 

E) 

hydrogen bonds 

17) 

A solution with a pH of 13 is 

17) 

______ 

A) 

neutral. 

B) 

weakly acidic. 

C) 

strongly acdic 

D) 

weakly basic. 

E) 

strongly basic 

18) 

Organic compounds 

18) 

______ 

A) 

always contain carbon. 

B) 

are synthesized by cells. 

C) 

always contain carbon and are made by cells. 

D) 

can only be synthesized in a laboratory. 

E) 

always contain nitrogen. 

19) 

Which one of the following statements about the functional groups of organic compounds is not true?  

19) 

______ 

A) 

Functional groups help make organic compounds soluble in water. 

B) 

Many biological molecules have two or more functional groups. 

C) 

Functional groups help make organic compounds hydrophilic. 

D) 

Functional groups participate in chemical reactions. 

E) 

All functional groups are composed only of carbon atoms 

20) 

Which one of the following statements about the monomers and polymers found in living organisms is not true? 

20) 

______ 

A) 

Cells typically make all of their macromolecules from a set of 40-50 common monomers and a few other ingredients that are rare. 

B) 

The monomers used to make polymers are essentially universal. 

C) 

Monomers serve as building blocks for polymers. 

D) 

DNA is built from just four kinds of monomers. 

E) 

Polymers are joined together to form monomers 

21) 

Sucrose is formed 

21) 

______ 

A) 

when water molecules are added to two monosaccharides. 

B) 

from two monosaccharides, glucose and sucrose 

C) 

when ionic bonds link two monosaccharides. 

D) 

from two glucose molecules. 

E) 

when glucose and lactose are combined. 

22) 

Molecules that taste sweet 

22) 

______ 

A) 

include at least one carbohydrate monomer. 

B) 

cause carbohydrates to break down into monomers that trigger the sweet taste reaction. 

C) 

have a shape that fits into the taste buds for sweet taste.  

D) 

are all proteins. 

E) 

must form covalent bonds to cells. 

23) 

Which one of the following lists contains only polysaccharides? 

23) 

______ 

A) 

sucrose, starch, and cellulose 

B) 

cellulose, starch, and glycogen 

C) 

starch, amino acids, and glycogen 

D) 

fructose, cellulose, and glucose 

E) 

nucleotides, glycogen, and cellulose 

24) 

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

24) 

______ 

A) 

cellulose . . . glycogen 

B) 

glycogen . . .  starch 

C) 

sucrose . . . glycogen 

D) 

glycogen . . . cellulose 

E) 

starch . . . glycogen 

25) 

Scientists believe that a diet high in animal products may increase the risk for atherosclerosis. This is because 

25) 

______ 

A) 

most animal fats are unsaturated and most animal products contain high levels of steroids. 

B) 

most animal fats  are used for energy storage and most animal products contain high levels of unsaturated fats. 

C) 

most animal fats are hydrogenated oils and most animal products contain high levels of phospholipids. 

D) 

most animal fats are saturated and most animal products contain high levels of triglycerides. 

E) 

most animal products contain high levels of unsaturated oils and anabolic steroids. 

26) 

In salad dressings, oil quickly separates from vinegar because the fats making up the oils are 

26) 

______ 

A) 

hydrophilic. 

B) 

nonpolar. 

C) 

polar. 

D) 

heavier than water. 

E) 

amphiphilic. 

27) 

Fatty acids having bonds the easily break down or spoil are 

27) 

______ 

A) 

monoglycerides. 

B) 

unsaturated. 

C) 

saturated. 

D) 

triglycerides. 

E) 

completely hydrogenated. 

28) 

A major type of lipid found in cell membranes is 

28) 

______ 

A) 

glycerol. 

B) 

triglycerides. 

C) 

waxes. 

D) 

cellulose. 

E) 

phospholipids. 

29) 

Proteins differ from one another because 

29) 

______ 

A) 

the sequence of amino acids in the polypeptide chain differs from protein to protein. 

B) 

the number of nitrogen atoms in each amino acid varies. 

C) 

each protein contains its own unique sequence of sugar molecules. 

D) 

the number of nucleotides found in each protein varies from molecule to molecule. 

E) 

the peptide bonds linking amino acids differ from protein to protein. 

30) 

Amino acids can be distinguished from one another by 

30) 

______ 

A) 

the chemical properties of their R groups. 

B) 

the type of bond between the R group and the rest of the amino acid molecule. 

C) 

the number of R groups found on the amino acid molecules. 

D) 

the chemical properties of their amino and carboxyl groups. 

E) 

All of the choices are correct. 

31) 

Peptide bonds 

31) 

______ 

A) 

are used to form amino acids. 

B) 

form between fatty acids. 

C) 

link amino acids. 

D) 

are formed by a hydrolysis reaction. 

E) 

None of the choices are correct. 

32) 

Which of the following factors can result in the denaturation or destruction  of a protein? 

32) 

______ 

A) 

chemicals that destroy hydrogen bonds 

B) 

changes in salt concentration 

C) 

changes in pH 

D) 

heat 

E) 

All of the choices can result in the denaturation of a protein. 

33) 

The __________ structure of a protein consists of a chain of amino acids assembled in a specific order. 

33) 

______ 

A) 

secondary 

B) 

primary 

C) 

tertiary 

D) 

quaternary 

E) 

None of the choices are correct. 

34) 

Genetic information is encoded in the 

34) 

______ 

A) 

sequence of nucleotides in DNA. 

B) 

quaternary structure of a protein. 

C) 

degree of saturation of fatty acids. 

D) 

linear sequence of amino acids in a polypeptide. 

E) 

length of glycogen. 

35) 

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 

35) 

______ 

A) 

includes proteins. 

B) 

includes nucleic acids. 

C) 

could only be made of triglycerides. 

D) 

could only be made of carbohydrates. 

E) 

does not include proteins or nucleic acids. 

36) 

Which of the following would be regarded as an organic molecule? 

36) 

______ 

A) 

Table salt 

B) 

Glass 

C) 

H2O 

D) 

Sugar 

 

1) 

B 

2) 

E 

3) 

C 

4) 

C 

5) 

A 

6) 

C 

7) 

B 

8) 

B 

9) 

D 

10) 

D 

11) 

B 

12) 

D 

13) 

C 

14) 

E 

15) 

E 

16) 

E 

17) 

E 

18) 

C 

19) 

E 

20) 

E 

21) 

B 

22) 

C 

23) 

B 

24) 

B 

25) 

D 

26) 

B 

27) 

B 

28) 

E 

29) 

A 

30) 

A 

31) 

C 

32) 

E 

33) 

B 

34) 

A 

35) 

E 

36) 

D