BIO 111 FINAL

Question 1

Atom X has an atomic number of 22 and is a cation with a magnitude of 2. How many electrons does it have?

Answer 1

20

Question 2

A student writes in her lab notebook, “The solution turned a bluish-green color” This is an example of qualitative data.

Answer 2

True

Question 3

Atomic X has an atomic weight of 42 and an atomic number of 22. How many neutrons does it have?

Answer 3

20

Question 4

A cation is an atom that has gained an electron

Answer 4

False

Question 5

Which of the following is NOT a characteristic of life?

Answer 5

observation

Question 6

What is the atomic number of nitrogen (7 electrons, 7 protons, 7 neutrons)?

Answer 6

7

Question 7

A community is a group of interacting organisms of one species

Answer 7

false

Question 8

domain archaea contains all the prokaryotes

Answer 8

false

Question 9

what subatomic particle is responsible for the chemical properties of an atom?

Answer 9

electrons

Question 10

Which of the following refers to the study of tissues?

Answer 10

histology

Question 11

most of a cells enzymes are

Answer 11

proteins

Question 12

In lab, you use a special balloon that is permeable to water but not sucrose to make an “artificial cell”. The balloon is filled with a solution of 20% sucrose and 80% water and is immersed in a beaker containing a solution of 40% sucrose and 60% water. Which of the following will occur?

Answer 12

water will leave the balloon

Question 13

which of the following is an example of potential rather than kinetic energy

Answer 13

molecule of glucose

Question 14

Some protozoans have special organelles called contractile vacuoles that continually eliminate excess water from the cell. The presence of these organelles tells you that the environment

Answer 14

is hypotonic to the protozoan

Question 15

diffusion does not require the cell to expend ATP. therefore, diffusion is considered a type of:

Answer 15

passive transport

Question 16

for living organisms, which of the following is an important consequence of the first law of thermodynamics?

Answer 16

the organism ultimately must obtain all of the necessary energy fro life from its environment

Question 17

a plant cell is placed in a hypotonic solution

Answer 17

is turgid

Question 18

anabolic pathways ___

Answer 18

consume energy to build up polymers from monomers

Question 19

a cell that neither gains nor loses water when it is immersed in a solution is

Answer 19

isotonic to its enviroment

Question 20

which of the following processes is endergonic?

Answer 20

the synthesis of glucose from carbon dioxide and water

Question 21

When animal cells are grown in a petri dish, they typically stop dividing once they have formed a single, unbroken layer on the bottom of the dish. This arrest of division is an example of

Answer 21

density-dependent inhibition

Question 22

which of the following is a feature of plant cell division that distinguishes it from animal cell division?

Answer 22

a cell plate forms

Question 23

cells that are no longer actively dividing are found in what part of the cell cycle?

Answer 23

G0

Question 24

independent orientation results in an increase in the number of…

Answer 24

possible combinations of characteristics

Question 25

crossing over occurs during what stage of meiosis

Answer 25

prophase 1

Question 26

the phase of mitosis during which the nuclear envelope breaks down and the nucleoli disappear is called

Answer 26

prophase

Question 27

mitosis may occur without cytokinesis

Answer 27

true

Question 28

in the liver cells of an animal have 24 chromosomes, its sperm cells would have how many chromosomes?

Answer 28

12

Question 29

what is the process called where tetrads will form?

Answer 29

synapsis

Question 30

prior to mitosis, each chromosome of a eukaryotic cell consists of a pair of identical structures called

Answer 30

sister chromotids

Question 31

what is the function of topoisomerase?

Answer 31

relieving the strain in the DNA ahead of the replication fork

Question 32

a new DNA strand elongates only in the 5' to 3' direction because ____

Answer 32

DNA polymerase can add nucleotides to the free 3' end

Question 33

which of the following is NOT true?

Answer 33

DNA uses the nitrogenous base uracil

Question 34

the leading and lagging strands differ in that _______

Answer 34

the leading strand is synthesized in the same direction as the movement of the replication fork, and the lagging strand is synthesized in the opposite direction

Question 35

Dna replication...

Answer 35

uses each strand of a DNA molecule as a template for the creation of a new strand

Question 36

multiple origins of replication on the DNA molecules of eukaryotic cells serve to___

Answer 36

shorten the time necessary for DNA replication

Question 37

in the polymerization of DNA, a phosphodiester bond is formed between a phosphate group of the nucleotide being added and ____ of the last nucleotide in the polymer

Answer 37

the 3' OH

Question 38

cytosine makes up 42? of the nucleotides in a sample of DNA from an organism. Approximately what percentage of nucleotides in this sample will be thymines?

Answer 38

8%

Question 39

the monomers of DNA and RNA are ___

Answer 39

nucleotides

Question 40

what is meant by the description "antiparallel" regarding the strands that make up DNA?

Answer 40

the 5' to 3' direction of ones strand runs counter to the 5' to 3' direction of the other strand