Which of the following can cause excess growth of algae in water?

a. Large amounts of fecal coliform

b. High nitrate content

c. High phosphate content

d. All of the above

Approximately what percentage of the human genome actually codes for proteins? 99.0% 2.5% 97.5% 1.0% 45.0%

A man whose father, sister, maternal grandmother and both grandfathers developed diabetes is concerned that he might also develop diabetes. Which of the following would be most likely to lower his risk of developing diabetes?

what happens to the enzyme after an enzymatic reaction is complete? A) it loses a carbon atom B) it gains a water molecule C) it loses its hydrogen atom D) nothing happenes

In general, the frequency with which crossing over occurs between two linked genes depends on what?

What are the possible phenotypes of the offspring from the cross above of round seeds (R) are completely dominant to wrinkled seeds (r) ? what would the possible phenotypes be if round seeds were incompletely dominant to wrinkled seeds

These are organisms produced with externally introduced genes

Which of the following statements about the field of health psychology is most accurate? a. It does not define health as being the mere absence of disease. b. It focuses exclusively on positive psychology. c.

Science Which factor is the main difference between a cell nucleus and a nucleiod? A. size of the organelle B. arrangement of the cytoskeleton C. movement of the flagella D. presence or absence of a surrounding membrane

A scientist notices that a person has two recessive genes for a trait. This describes the person's A) phenotype B) genotype C) traits D) characteristics

Which area of the brain has been associated with sadness, anxiety, and depression?