Enzymes require specific environments for activity, usually with neutral pH and a particular temperature range. Some bacteria are metabolically active in hot springs because their enzymes have high optimal temperatures
their enzymes are completely insensitive to temperature
high temperatures make catalysis unnecessary
they are able to maintain a lower internal temperature

Complete the possible outcomes for each generation in the pedigree chartaa aa aa

20. in humans, freckles are dominant to no freckles. trey has no freckles and his wife anna grace has freckles, but her dad doesn't. they want to know what percentage of their kids would look like trey. show a punnett square to support your answer.

Astudent wants to test the hypothesis that fertilizer improves the growth rate of grass seeds. to test this hypothesis, the student put the same amount of grass seed in 3 containers with the same type of soil. the student measured the growth at the end of the week. all plants received equal amounts of water and sunlight. if you were asked to graph this data, what would you place on the x-axis? a. fertilizer b. water c. plant growth d. week one