According to cell theory, all cells carry out the functions needed to sustain life. that means all cells must contain
a) dna.
b) a nucleus.
c) organelles.
d) a control center.

Which of the following are energy solutions that release pollution into the air>

Food provides molecules that serve as fuel and building material for all organisms. plants undergo photosynthesis and make their own food. other organisms, like us and the horse seen above, are consumers and eat food. how do all organisms use food as fuel? be sure to include the name of the process in your answer. me.

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.