Which of the following organelles is not found in animal cells?

Cell membrane

Nucleus

Mitochondria

Cell wall

When biologists speak of a universal genetic code they are referring to the fact that, in nearly all organisms, A) the DNA sequences are identical. B) RNA information is transcribed. C) RNA specifies proteins the same way.

A science student makes the following statement: If cows produce more milk when fed wheat, then cows that were not fed wheat will produce less milk. What is the student doing? A. Drawing conclusions B. Forming a hypothesis C. Making a prediction D.

Which lane's sample produced the fewest fragments of DNA?

Maggots get their energy by breaking down dead and decaying animals. What are maggots? autotrophs producers decomposers heterotrophs

How much of our total body weight is water? 30-50 percent 40-60 percent 50-70 percent 60-80 percent?

What is the function of myeloma cells used in the production of monoclonal antibodies?

Describe a simple nervous system. Give an example of an organism that has a simple nervous system.

An example of a parallel choice on a dichotomous key is

Describe one way the human respiratory system degrades over our lifespans, and explain one environmental condition that could cause an unnatural degradation as someone ages, including why that environmental condition harms their respiratory system.

Which is the mechanism by which improper excision of a prophage from a bacterial chromosome results in packaging of bacterial genes near the integration site into a phage head?