Weeds growing in a recently burned a patch of forest represent the first stage in

primary succession

secondary succession

secondary colonization

biological magnification

An operon encodes enzymes for making an essential amino acid and is regulated like the trp operon. Which of the statement is true? A. The amino acid inactivates the repressor. B. The amino acid acts as a corepressor. C.

Kohlberg asked subjects to explain how they would respond to moral dilemmas true or false

An animal cell that is surrounded by fresh water will burst because the osmotic pressure causes

Describe the translocation of water and minerals in plant stems and transpiration. Include which vascular tissue is involved and the purpose.

What is released into the neuromuscular junction to produce a muscle contraction?

During Mendel's first set of experiments, he allowed true-breeding tall plants to cross with true-breeding short plants. What happened when he allowed the F, offspring from this first set of experiments to self-pollinate?

What process produced the sperm in the male flies and egg in the female flies

Explain why we would expect to find glucose in the urine of a diabetic person

What affect does extreme temperature and extreme pH have on enzyme activity?

Why did early scientists call interphase the resting stage?