The green house effect makes it possible for life to exist on earth
Answer:
A
Explanation:
A) all cells contain DNA, and DNA is all composed of adenine, thymine, guanine, and cytosine.
B) not all cells have a nucleus. For example, prokaryotes have no nucleus
C)Not all cells have a cell wall.(Animal cells don't)
D) not all cells have mitochondria (Prokaryotes don't)
The probability is very low or impossible because if 70% and theres 77, 66 cant survive
Answer:
Reactions require an input of energy to initiate the reaction; this is called the activation energy (EA).
Activation energy is the amount of energy required to reach the transition state.
The source of the activation energy needed to push reactions forward is typically heat energy from the surroundings.
For cellular reactions to occur fast enough over short time scales, their activation energies are lowered by molecules called catalysts.
Enzymes are catalysts
False. Energy is only released when chemical bonds are formed.
