Practice Questions

TLS Online TPP Program

#Question id: 4958

What is true of the fossil record of mammalian origins?

#XL - S Microbiology

It is a good example of punctuated equilibrium.
It shows that mammals and birds evolved from the same kind of dinosaur.
It includes transitional forms with progressively specialized teeth.
It indicates that mammals and dinosaurs did not overlap in geologic time.

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TLS Online TPP Program

#Question id: 15342

#XL - S Microbiology

The heavy chain is then expressed on the cell surface in combination with the surrogate light chain, which is made up of_______________, together they form the pre-B-cell receptor,

TLS Online TPP Program

#Question id: 15406

#XL - S Microbiology

Which method of gene transfer involves direct contact between the bacteria?

TLS Online TPP Program

#Question id: 15407

#XL - S Microbiology

The end result of F factor mediated conjugation:

TLS Online TPP Program

#Question id: 15408

#XL - S Microbiology

Which of the following is not a protein or group of proteins required for conjugation to occur?

TLS Online TPP Program

#Question id: 15409

#XL - S Microbiology

A heterozygous trihybrid corn plant is testcrossed and the following progeny are produced (all traits are recessive to their wildtype alternative);

booster, silkless 137

booster, liguleless, silkless 291

liguleless, silkless 3

booster, liguleless 34

What is the order of the loci on the chromosome?

TLS Online TPP Program

#Question id: 15446

#XL - S Microbiology

Hyper IgM syndrome caused by mutation in?