Are sister chromatids present in all or part of this phase mastering biology

The mitochondrion functions lipid storage protein synthesis photosynthesis dna replication atp synthesis

Which of the following is not a main characteristic that scientists focus on when determining which kingdom an organism belongs to

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.