I need help with these questions. Thank you so much. Enzymes are catalysts becau
ID: 133845 • Letter: I
Question
I need help with these questions. Thank you so much.
Enzymes are catalysts because they operate to
A. lower activation energy
B. raise activation energy
C. supply activation energy
D. supply the reactants
If a cell lacked ribosomes, it would not be able to :
A. move
B. synthesize proteins
C. produce DNA
D. divide
The process of cell division is found in non reproductive
A. meiosis
B. mitosis
C. replication
D. binary fission
During which phase of the cell cycle is DNA synthesized?
A. G1
B. G2
C. S
D. prophase
Explanation / Answer
Answer:
1). A. Lower activation energy
Explanation:
Enzyme is a catalyst that lowers the activation energy. The catalyst speeds up the rate of reaction without being consumed.
2). B. synthesize proteins
Explanation:
Ribosomes mainly involve in protein synthesis.
3). B. mitosis
Explanation:
Mitosis is a cell division and is not a reproductive process.
4). C. S
Explanation:
S-phase is synthetic phase, where DNA replicaiton takes place.