When biuret solution is used as an indicator, it turns from blue to purple in the presence of which organic molecule?

A) lipid

B) protein

C) nucleic acid

D) carbohydrate

What are linked genes

Which function do the nucleus and ribosomes have in common? A They both move easily in and out of the nuclear pores. B They are organelles that control information in the cell. C Neither of them has a nuclear envelope.

Which of these indicates equilibrium in the community? A. seral B. pioneer C. ultimate D. intermediate E. climax

Apoptosis involves all but which of the following? a. fragmentation of the DNA b. cell-signaling pathways c. lysis of the cell d. digestion of cellular contents by scavenger cells

Which four elements comprise approximately 96% of our body weight?

Predict how an unusually prolonged drought might affect a biological community

A persons body temperature begins to increase when in direct sun. They start to sweat to decrease their waste body temperature. What type of feedback is this in example of? Negative Positive Neutral None of the above

Centromeres split apart during

Elephants are endangered, but cows are not because

Healthy bones, teeth, and muscles require the mineral? Carbon Sodium Calcium Cadmium Iron