A cell can form beads on a string chromatin, but not solenoid fibers. Which molecule has likely been removed or mutated in this cell? a. Η1
b. non-histone proteins
c. H2A
d. topoisomerase

What would happen to the nutrients in an ecosystem if decomposers, such as bacteria, didn’t exist there?

Living cells cannot use heat to provide the activation energy for biochemical reactions because which choice(s) complete the sentence correctly? a) answer choice ii. eliminate b) answer choices ii and iv. c) answer choice iii and iv. d) all answers can complete the sentence.

Which would best keep the oxygen cycle stable? a. cutting down jungles to create farmland b. eliminating parks in large cities c. dumping toxic chemicals into the ocean d. reducing the amount of deforestation d. reducing the amount of deforestation