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Flashcards in Exam 3 Review Deck (42):
1

Where does translation occur?

the cytoplasm

2

What does translation produce?

proteins

3

What type of RNA contains anticodons?

tRNA

4

Which type of RNA acts as an enzyme?

rRNA

5

Which type of RNA delivers amino acids to the ribosome?

tRNA

6

Which type of RNA is part of a ribosome?

rRNA

7

Which type of RNA is active in the cytoplasm?

rRNA, tRNA, and mRNA

8

Which type of RNA is clover-leaf shaped?

tRNA

9

Which type of RNA has codons?

mRNA

10

What type of bond is a peptide bond?

covalent

11

What two atoms link in a peptide bond?

C - N

12

What structure consists of two or more polypeptides working together?

quaternary structure

13

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

tertiary structure

14

What structure is a sequence of amino acids?

primary structure

15

What structure is an alpha helix or beta pleated sheet?

secondary structure

16

What does denature mean in reference to proteins?

change in protein shape due to environment

17

Define enzyme specificity.

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

18

List some attributes of enzymes.

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

19

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

competitive inhibition

20

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

allosteric inhibition

21

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

feedback inhibition

22

What does meiosis produce in the human life-cycle?

gametes

23

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

mitosis

24

mitosis or meiosis- is always fallowed by cytokinesis

neither

25

mitosis or meiosis- recombination may occur

meiosis

26

mitosis or meiosis- chromosomes condense and become visible

both

27

mitosis or meiosis- DNA replicates prior to it

both

28

mitosis or meiosis- utilizes a spindle

both

29

mitosis or meiosis- produces four daughter cells

meiosis

30

mitosis or meiosis- is responsible for growth and wound healing

mitosis

31

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

prophase II

32

When does crossing over occur?

prophase I

33

After which phase does interkinesis occur if any?

telophase I

34

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

32

35

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

tree diagram

36

One allele can mask the expression of another allele.

Law of Dominance

37

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

genotype

38

The expression of genes or how an organism looks.

phenotype

39

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

Punnet square

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?

one homozygous dominant, one homozygous recessive
dihybrid cross

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?

blended inheritance

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?

tan