Bio Lab Final

Question 1

Assuming that they all belong to the same plant, arrange the following structures from the largest to smallest?

a.) 2,3,1
b.) 2,1,3
c.) 3,2,1
d.) 3,1,2

Answer 1

d

Question 2

Arrange the following in a correct sequence from the earliest to the most recent in which these plant traits originated

1.sporophyte dominance, gametophyte independence
2. sporophyte dominance, gametophyte dependence
3. gametophyte dominance, sporophyte dependence

Answer 2

3 2 1

Question 3

which of the following statements is true in the pine life cycle

a) the pine tree is the gametophyte
b) male and female gametophytes are in close proximity during gamete synthesis
c) conifer pollen grains contain male gametophytes
d) double fertilization is relatively common phenomenon

Answer 3

conifer pollen grains contain male gametophytes

Question 4

which of the following is NOT functionally important in cells of the gametophytes of both angiosperms and gymnosperms?

a) haploid nuclei
b) mitochondria
c) cell walls
d) chloroplasts

Answer 4

d

Question 5

in terms of alterations of generations, the internal parts of the pollen grains of seed-producing plants are most similar to a _________.

a) moss sporophyte
b) moss gametophyte bearing both male and female gametangia
c) fern sporophyte
d) fern gametophyte bearing only antheridia

Answer 5

d

Question 6

Cells of the sporophyte have 16 chromosomes. How many chromosomes should be in an endosperm nucleus?
a) 8
b) 16
c) 24
d) 32

Answer 6

c

Question 7

how many chromosomes should be in an embryo sac nucleus?
a) 8
b) 16
c) 24
d) 32

Answer 7

b

Question 8

natural genetic variation by the process transformation in bacteria involves

a) sex pili
b) bacteriophages
c) cell surface proteins
d) cell surface lipids
e) cell surface carbohydrates

Answer 8

c

Question 9

in the laboratory generation of bacteria “competent” for transformation requires

a) treatment with proteases
b) alteration of permeability of the cell wall by alteration of calcium ion concentration
c) treatment with lipases
d) alteration of permeability of the cell wall by alteration of phosphate ion concentration
e) treatment with detergents

Answer 9

b

Question 10

plasmids are useful for DNA transformation of E. Coli in the laboratory because

a) they replicate multiple copies and gene products can be monitored
b) they can be designed with multiple restriction enzyme recognition sites for insertion of genes of interest
c) they can be designed to carry reporter genes
d) a and b are correct
e) a d and c are correct

Answer 10

d