Practice Questions

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#Question id: 1032

A research laboratory is investigating environmental factors that would inhibit the growth of Archaea. One question they have is if adding the antibiotic penicillin would be effective in controlling their growth. What do you think the outcome would be if they tried this?

#SCPH28 | Zoology

The penicillin wouldn't affect the Archaea because it prevents crosslinking of peptidoglycan-Archaea don't have this compound in their cell walls.
The penicillin will inhibit cell wall formation in the Archaea, killing them.
The penicillin will slow down the growth of the Archaea by damaging the cell wall, but they will still be able to grow somewhat.
The penicillin will enhance the growth of the Archaea by providing a rich nutrient source.

More Questions

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#Question id: 15143

#SCPH05 I Biotechnology

Which one of the following is a depiction of the GenBank sequence entry format?

TLS Online TPP Program

#Question id: 15143

#SCPH05 I Biotechnology

Which one of the following is a depiction of the GenBank sequence entry format?

TLS Online TPP Program

#Question id: 15146

#SCPH01 Biochemistry

You have isolated a set of five yeast mutants that form dark red colonies instead of the usual white colonies of wild-type yeast. You cross each of the mutants to a wild-type haploid strain and obtain the results shown below;

What do these results tell you about each of the mutants?

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#Question id: 15146

#SCPH12 I Genetics

You have isolated a set of five yeast mutants that form dark red colonies instead of the usual white colonies of wild-type yeast. You cross each of the mutants to a wild-type haploid strain and obtain the results shown below;

What do these results tell you about each of the mutants?

TLS Online TPP Program

#Question id: 15147

#SCPH12 I Genetics

You have isolated a set of five yeast mutants that form dark red colonies instead of the usual white colonies of wild-type yeast. You cross each of the mutants to a wild-type haploid strain and obtain the results shown below;

you cross each haploid mutant strain to a different haploid mutant of the opposite mating type. From the results shown below deduce as much as you can about which mutations lie in the same gene. Clearly state any remaining ambiguities and suggest some general ways that the ambiguities might be resolved

a) That mutants 1 and 3 form one complementation group and are mutations in the same gene (gene A)

b) That mutations 2 and 5 form a second complementation group and are mutations in a second gene (gene B).

c) That mutations 3 and 5 form a second complementation group and are mutations in a second gene (gene B).

d) The first ambiguity is whether mutant 4 has a mutation in gene A or B, or whether it represents a unique gene.

Which of the following is the correct prediction about mutants?

TLS Online TPP Program

#Question id: 15148

#SCPH01 Biochemistry

You have isolated a set of five yeast mutants that form dark red colonies instead of the usual white colonies of wild-type yeast. You cross each of the mutants to a wild-type haploid strain and obtain the results shown below;

you cross each haploid mutant strain to a different haploid mutant of the opposite mating type. What type of mutation shown in the above figure;