Answer:
-molecules brought in and used in three turns of the Calvin cycle: Carbon dioxide (CO2)
-molecules produced during three turns of the Calvin cycle that leave the cycle: Glyceraldehyde-3-phosphate (G3P)
-molecules used and regenerated within the Calvin cycle during three turns: Ribulose-1,5-bisphosphate (RUBP)
Explanation:
Calvin cycle is the second phase of photosynthesis, also called the light independent phase. This phase occurs in there major stages namely:
1). Carbon fixation: A molecule of carbon dioxide (CO2), which enters through the stomata of the leaves, is fixed in THREE TURNS i.e. 3CO2 by reacting with a CO2 acceptor called ribulosebiphosphate (RUBP) as catalyzed by RUBISCO. This reaction forms an unstable 6-carbon compound that breaks into 2 molecules of 3-phosphoglycerate (PGA).
2) Reduction: In this stage, the PGA is reduced and phosphorylated by NADPH and ATP respectively to form 6 Glyceraldehyde-3-phosphate (G3P) molecules. One of these G3P molecules leaves the cycle during its THREE TURNS to be used to produce a molecule of glucose. The remaining 5 G3P molecules is used for the third stage.
3). Regeneration: In this stage, the RUBP (CO2 acceptor) is regenerated in THREE TURNS by rearranging the 5 G3P molecules to form 3 RUBP molecules. That is, 3 RUBP to accept 3CO2.
Note: The emphasized THREE TURNS is what must occur in order for one G3P to leave the cycle.
<span>Parathyroid Hormone (PTH) is a hormone that signals an increase in blood calcium (Ca2+) within into the bloodstream when below normal ranges. When blood calcium is within normal ranges Calcitonin is released from the thyroid to stop blood calcium from increasing thus maintaining equilibrium.</span>
Answer:
Test crosses are used in selective breeding because they can determine the genotype of the parent.
Explanation:
Also, I see it it ur first question. Welcome to Brainly!
Answer:Sugar molecules contain carbon, hydrogen, and oxygen: Their hydrocarbon backbones are used to make amino acids and other carbon-based molecules that can be assembled into larger molecules (such as proteins and DNA)
Answer
Yes, Gran stain is a useful tool for unterstanding the phylogeny of eurobacteria.
Explanation
The Gram staining method is used to classify two broad groups: gram-positive and gram-negative bacteria. This technique is widely used in clinical analysis and microbiology laboratories to monitor infections in pus smears or organic fluids.
In the Gran staining method, we subject the bacteria to dye treatments and, depending on the chemical composition of the cell wall of these bacteria, each one will react differently with the dyes and thus identify them by their biochemical characteristics.
