Where are the pigments that trap the photons (light energy)? A. in the stroma of the chloroplast

B. in the mitochondria

C. in the thylakoid disks of the chloroplast

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.

Ais a group of individuals of the same that exist together in the same place at the same time

How can antibodies "remember" a particular bacterial invader or "antigen" on that invader?