The answer is C. oxygen. Oxygen is the acceptor for hydrogen because in an aerobic reaction oxygen is used.
Answer:
In a school environment, there are different teachers who teach a different subject, administration controls all the school functions and affairs other than teaching. Other staff such as janitors, bus drivers carry out necessary functions.
In the schools, there are various specific tasks carried out by specific teaching or non-teaching staff. In the cell, a similar condition found as they show specialization and communication as various cell organelles are specific to a specific function and communicate with one another.
The correct answer is the interphase.
The cell cycle consists of three phases: the interphase (G1, S, G2) the mitotic (M) phase, and cytokinesis. <span>The first checkpoint of the cell cycle is G1 checkpoint which is between G1 and S phase when cell checks its size, nutrients, molecular signals, DNA integrity. The second checkpoint is G2, just before the mitotic phase, when cell checks DNA integrity and DNA replication. Those two checkpoints are the ones before division, other like M checkpoint is during the mitosis.</span>
Answer: it is difficult because it is necessary to understand some concepts used in a system. For example what is a boundary, and environment which can be positive or negative, etc. A sample could be the course OpenLearn that provides an example of Computing & IT.
Explanation:
