I believe the answer is ribosomes
Because the rock is laid down over time, the oldest rock (and fossils or whatever) will be in the lowest layer. As you go up, the age decreases - you are looking at younger rocks.
This doesn't tell you the *absolute* age of the rocks - you can't say from this evidence whether they are 100 million or 500 million years old. But you can see changes over history and you can get an ordering in time.
Answer:
6 times
Explanation:
The process if cellular respiration is divided into three major phases : Glycolysis, Kreb cycle and ETC (electron transport chain). Starting from Glycolysis, which occurs in cytosol and breaks the simple glucose molecules. It is the first step of the cellular respiration, in which one glucose molecule is broken down into two molecules of 3-carbon pyruvates.
Each of these 3 carbon pyruvate molecules lose a carbon to form acetyl-Co A and enter into Citric acid cycle- the second stage of cellular respiration. For each pyruvate going into citric acid cycle 1 GTP
, 3 NADH
, 1 FADH2, and 2CO2 molecules are formed. The stage is next followed by electron transport chain in which greater amount of energy in the form of ATP is synthesized.
So, we have seen that each glucose molecule starts two preparatory reactions because 2 pyruvate molecules are formed and each enters into separate citric acid cycle. So, if there are 3 molecules of glucose 6 preparatory reactions separately will occur.
Hope it help!
The answer to this question would be true.