Exam 3 Review

Question 1

Where does translation occur?

Answer 1

the cytoplasm

Question 2

What does translation produce?

Answer 2

proteins

Question 3

What type of RNA contains anticodons?

Answer 3

tRNA

Question 4

Which type of RNA acts as an enzyme?

Answer 4

rRNA

Question 5

Which type of RNA delivers amino acids to the ribosome?

Answer 5

tRNA

Question 6

Which type of RNA is part of a ribosome?

Answer 6

rRNA

Question 7

Which type of RNA is active in the cytoplasm?

Answer 7

rRNA, tRNA, and mRNA

Question 8

Which type of RNA is clover-leaf shaped?

Answer 8

tRNA

Question 9

Which type of RNA has codons?

Answer 9

mRNA

Question 10

What type of bond is a peptide bond?

Answer 10

covalent

Question 11

What two atoms link in a peptide bond?

Answer 11

C - N

Question 12

What structure consists of two or more polypeptides working together?

Answer 12

quaternary structure

Question 13

What structure is 3D and stabilized by interactions among R-groups?

Answer 13

tertiary structure

Question 14

What structure is a sequence of amino acids?

Answer 14

primary structure

Question 15

What structure is an alpha helix or beta pleated sheet?

Answer 15

secondary structure

Question 16

What does denature mean in reference to proteins?

Answer 16

change in protein shape due to environment

Question 17

Define enzyme specificity.

Answer 17

the degree to which an enzyme is particular in its ability to catalyze a singular reaction, refers to enzyme shape

Question 18

List some attributes of enzymes.

Answer 18

1. they catalyze chemical reactions
2. they control metabolism
3. they are sensitive to temperature and pH
4. they are reusable

Question 19

In which type of enzyme regulation do the substrate and inhibitor both fit the active site?

Answer 19

competitive inhibition

Question 20

In which type of enzyme regulation must the enzyme have 4^0 structure?

Answer 20

allosteric inhibition

Question 21

In which type of enzyme regulation does the product control the reaction?

Answer 21

feedback inhibition

Question 22

What does meiosis produce in the human life-cycle?

Answer 22

gametes

Question 23

mitosis or meiosis- ploidy level of product does not differ from ploidy level of parent cell

Answer 23

mitosis

Question 24

mitosis or meiosis- is always fallowed by cytokinesis

Answer 24

neither

Question 25

mitosis or meiosis- recombination may occur

Answer 25

meiosis

Question 26

mitosis or meiosis- chromosomes condense and become visible

Answer 26

both

Question 27

mitosis or meiosis- DNA replicates prior to it

Answer 27

both

Question 28

mitosis or meiosis- utilizes a spindle

Answer 28

both

Question 29

mitosis or meiosis- produces four daughter cells

Answer 29

meiosis

Question 30

mitosis or meiosis- is responsible for growth and wound healing

Answer 30

mitosis

Question 31

When does the spindle re-orient perpendicular to the original spindle?

Answer 31

prophase II

Question 32

When does crossing over occur?

Answer 32

prophase I

Question 33

After which phase does interkinesis occur if any?

Answer 33

telophase I

Question 34

How many possible different types of gametes can an individual with the following genotype produce? AaBbCcDdEe

Answer 34

32

Question 35

What is a device used to predict all possible gametes with a known genotype?

Answer 35

tree diagram

Question 36

One allele can mask the expression of another allele.

Answer 36

Law of Dominance

Question 37

If an organism is described as homozygous dominant, for example.

Answer 37

genotype

Question 38

The expression of genes or how an organism looks.

Answer 38

phenotype

Question 39

A mechanism that predicts the genotypes of all possible outcomes from all possible gamete combinations.

Answer 39

Punnet square

Question 40

If you get a phenotypic ratio of 9:3:3:1 in the F2 generation of sprees, what was the genotype of the grandparents (P generation)? What type of cross is this?

Answer 40

one homozygous dominant, one homozygous recessive | dihybrid cross

Question 41

Red flower color is dominant to white flower color. When I crossed a homozygous red flower to a homozygous white flower, all of the offspring were pink. What's going on?

Answer 41

blended inheritance

Question 42

In Drosophila (fruit fly) ebony is a recessive mutant causing black body color when homozygous, as opposed to the normal tan color. If an ebony colored male is crossed to a homozygous tan female, what will be the color of the offspring?

Answer 42

tan