What is the function or purpose of the lac operon of

e. coli?

What do cells need to do between divisons to make sure that they don't just get smaller?

Why do you only hear the phrase "It's not the heat, it's the humidity," in the summer months? Because colder air in the winter cannot hold as much water vapor, so it tends to be more humid.

A human skin cell contains 46 chromosomes. After the cell completes the process of mitosis and the cell divides, how many chromosomes will each of the new skin cells contain?

Rock is broken down into soil by what process? a) mechanics b) accumulation c) weathering

Describe what Earth would be like today if vascular plants had never developed. Use examples to support your answer.

Which product can you NOT recycle? A. newspaper B. pressure-treated wood C. aluminum soda can D. plastic milk jug

What molecule is essential to regenerate at the end of the Krebs cycle to start the process again

Shamar lowers himself into a hot bath. At first, he can barely stand the scalding-hot water; gradually, though, he gets used to the temperature and is able to sit comfortably in the tub. Shamar's experience illustrates sensory:

Gregor mendel a. developed theories of evolutionary change. b. discovered the structure of the dna molecule. c. studied characteristics that are influenced by several genetic loci. d. discovered the fundamental principles of how traits are inherited.

A biologist is studying the process of how DNA is copied. Which of the following would he or she be studying? DNA transcription DNA elongation DNA translocation DNA polymerase DNA replication