Answer:
Nuclear energy produced the sun's solar energy.
as we all know , forests are filled with trees. and trees are helpful to us in many ways ,
they give us oxygen , wood , they are the main reason humans can actually survive on earth ... as the take in carbon di oxide and maintain the atmospheric balance on earth .
rubbers , papers , pencils are all impossible to make without trees .
thus trees and forests play an important role in human life and on earth
Answer:
G1-preparation for DNA replication
G2-preparation for mitosis
Explanation:
Cell cycle is a process that can be divided into two major phases: interphase and mitotic phase (division). Interphase is than subdivided into G1, S and G2 phases while mitotic phases consists of prophase, metaphase, anaphase and telophase.
Phases in interphase:
- G1 or Gap 1 is characterized by cell growth (cell becomes much larger), synthesis of molecules and organelles copying.
- S phase is characterized by DNA replication
- G2 phase or Gap 2 phase is phase in which cell makes more proteins and organelles and prepares for mitosis
Answer:
The correct answer would be C.10.
Krebs cycle is a part of cellular respiration that takes place in the mitochondria.
Five energy conversions take place in one complete cycle of the Krebs cycle.
These conversions lead to the formation of three molecules of NADH, one molecule of FADH₂ and one molecule of ATP.
Thus, total 10 energy conversions would occur in two rounds of Krebs cycle or when 2 molecules of acetyl-CoA go through the cycle.
Answer:
G All cells come from pre existing cells
