How did this fossil form?

O

A. It was covered in amber.

B. It was covered in ice.

C. It was covered in sediment.

D. It was covered in tar.

PCR (polymerase chain reaction) is an excellent method of generating copies of target DNA. If a single piece of double stranded DNA (dsDNA) is put into a PCR machine, how many dsDNA segments will there be after 3 rounds? a.

You are the scientific consultant for a television show about forensic analysis. In an upcoming episode, investigators will compare the DNA of a suspect and a DNA sample collected from the victim's fingernails.

Our cells are different to bacterial cells in that our cells contain membrane-bound compartments known as organelles, allowing proteins to be sorted to different areas.

Concentration of urine takes place in the

A muscle cell contracts or expands when

Which structure of the respitory system allows for gas exchange

What does not depend on the population size of organisms living in an area

What occurs during the g1 phase (gap phase 1) of interphase.?

How does human evolution relate to the sensibility of disease

Explain how negative feedback affects the bodies hormones.