6 To establish a link between a specific bacterium and an eye infection, researc

Question

6        To establish a link between a specific bacterium and an eye infection, researchers have shown that the bacterium is present in affected individuals but not in healthy individulas. What other experiments do researchers need to perform to be absolutely sure that the bacterium is responsible for the disease?

1. Isolate the bacterium in a pure culture and demonstrate that healty animals injected with this culture also show similar symptoms.

            2. Demonstrate that the bacterium is not able to live outside of humans or animals

3. Isolate the bacterium from an infected sick animal and demonstrate that it is the same bacterium as the one that initially caused the infection

Infect another human patient to see if they show symptoms

A)    1 and 2

B)    1 and 3

C)    2 and 3

D)    2 and 4

7. The chloroplasts of all of the following are derived from the endosymbiosis of an ancestral alga except those for

a) diatoms

b) brown algae(kelps)

C) stramoenopiles

D) green algae

8. If the Archaeoplatidae are eventually designated a kindom, and the land plants are excluded from this kingdom, then what will be true of this new kingdom?

A) it will be monophyletic.

b) it will be paraphyletic.

C) It will be polyphyletic

D) it would be a true clade.

9. you discover a new species of plant that you suspect could be a moss or some other “bryophyte”. Which of the following characteristics would you use to decide that your new plant was not a “brophyte”?

A) The sporophyte generation is dominant

B) Antheridia and archegonia are produced by gametophytes

C) The germinating spore give rise to the gametophyte

D) it produces a flagellated sperm

10 you go back in time to the late Cretaceous period and discover an interesting plant showing the following characeristics:

1.      Lignified vascular tissue

2.      Seeds not contained within a carpel

3.      Other vessel elements

4.      Broad leaves

You would expect this plant to have:

A)    Fruits

B)    Flowers

C)    Pollen

D)    Endosperm

Explanation / Answer

6. B) 1 and 3

7. D) green algae

8. b) it will be paraphyletic.

9. A) The sporophyte generation is dominant

Related Questions

Navigate

• Browse (All)
• Browse 6
• Subjects

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.