Sally and charlie were learning about the plant and animal kingdoms in science class. their assignment for the day can be seen above. charlie said that both plants and animals need sunlight and nutrients and they both make their own food. sally said charlie was wrong! she said that plants use sunlight to make their own food and animals eat their food. who is correct? explain using the three terms sunlight, nutrients, food.

Which of the following is a question of morality? a.) delierately reporting false data b.) accidentally reporting false data c.) kepping a sloppy record of experimental observation d.) condition a drug experiment which will harm a lab rats

Keeping in mind the life cycle of bacteriophages, consider the following problem: during the reproductive cycle of a temperate bacteriophage, the viral dna inserts into the bacterial chromosome where the resultant prophage behaves much like a trojan horse. it can remain quiescent, or it can become lytic and initiate a burst of progeny viruses. several operons maintain the prophage state by interacting with a repressor that keeps the lytic cycle in check. insults (ultraviolet light, for example) to the bacterial cell lead to a partial breakdown of the repressor, which in turn causes the production of enzymes involved in the lytic cycle. as stated in this simple form, would you consider this system of regulation to be operating under positive or negative control?

One of the reasons that stars are so large is because