Exam 17: The Microorganisms: Viruses, bacteria, and Protists

As a result of drinking contaminated water,a patient contracts amoebic dysentery.Would an antibiotic drug that inhibits peptidoglycan synthesis be beneficial in treating the amoeba infection?

Penicillin is an antibiotic drug that interferes with cell wall synthesis in bacteria,eventually resulting in cell death.What effect would you predict if you applied penicillin to archaea?

A chain of spherical bacterial cells is called a

Archaea

Protists can be

What structure enables a plant virus to move from one plant cell to the next?

Animal viruses that have an envelope enter cells by

Which statement about slime molds and water molds is incorrect?

Why don't new biological macromolecules form abiotically from nonliving matter on the Earth today?

Which means of genetic recombination in bacteria requires a direct link between donor and recipient cells?

Which of the following statements regarding bacterial endospores is false?

Some bacteria carry out a metabolic process known as fermentation,and

African sleeping sickness is caused by a

Bacteria that secrete digestive enzymes into their surroundings in order to decompose nonliving organic matter are called

Which of these is mismatched?

You take a large sample of soil and put it all into individual pots.You then divide the pots into two groups: In the first group,every pot of soil has been sterilized,and thus contains no bacteria.In the other group,none of the pots of soil has been sterilized.You plant soybean seeds in all the pots.What would you expect to see as the seeds sprout and grow?

Which means of genetic recombination in bacteria often makes use of pili?

Colchicine is a drug that blocks formation of the mitotic spindle apparatus.What would you expect if you applied colchicine to a petri dish of bacteria?

In which type of environment would you be most likely to find methanogenic archaea?

Citrus tristeza virus (CTV)damages and kills susceptible citrus trees around the world.It can by spread by grafting of infected plants; and by aphids,insects with piercing mouthparts that they use to suck fluid from plants.Which of the following would not limit the spread of CTV?