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Q1. Two intracellular molecules X and Y are both normally synthesized at a constant rate of 1000 molecules per second per cell. Molecules X is broken down slowly: each molecule of X survives on average for 100 seconds, Molecule Y is broken down 10 times faster, each molecule of Y services on average for 10 seconds.
Compute how many molecule of X and Y the cell contains at any time.
Q2. The breakdown of sucrose into the simple sugars fructose and glucose is an exergonic reaction. Sucrose is quite stable, and left on its own at room or even human body temperature, breakdown occurs very slowly. The enzyme sucrase catalyzes conversion of sucrose to glucose and fructose, increasing the reaction rate as a minimum one-million-fold. How does the net amount of energy released during the breakdown of sucrose compare between spontaneous reactions and catalyzed by sucrase?
When mendel crossed yellow-seeded and green-seeded pea plants, all of offspring were yellow seeded. As he took these yellow-seeded plants and crossed then with green- seeded plants what genotypic ratio is expected.
There they discover his mitochondria can use only fatty acids and amino acids for respiration, and his cells produce more lactate than normal. Of the following, which is the best description of his condition.
Describe the structure of atp and gtp. Describe how atp is produced during chemiosmosis. Illustrate two specific cellular processes that require atp and explain how atp is used in each process.
What is the possibility that their first child will have attached earlobes. which among the conditions or substances do ALL archaeans need for survival and reproduction.
A couple has 4 children. Neither the father nor the mother is bald; one of the two sons is bald, but neither of the daughters is bald. If one of the daughters marries a non bald man and they have a son, what is the possibility that the son will becom..
Why or why not explain with reason? Work the genetics problem predicting the frequencies of the versions of this trait among their prospective children.
Cyanobacteria grow prolifically in streams and lakes with low oxygen levels and high nutrient concentrations. How may the presence or absence of cyanobacteria be used as an index of pollution in lakes.
What is the phenotypic ratio for the F2 generation? Demonstrate the work, including your key. what are Harry and Sally's blood types? Show your work. What if blood typing exposed Harry had type O blood.
What is the genotypic and phenotypic ratio in the offspring produced by the cross AABb x Aabb if A is green colour, a - yellow; B- tall plants. b -short plant? Suppose complete dominance for the trait. Describe results of the cross using branching di..
Two species of garter snakes live in the same geographic area. One generally lives in water and the other mainly on land, so that they rarely encounter each other and do not interbreed. This is an example of what category of genetic isolation.
Both endocrine and nervous system are major regulating systems of the body; however, the nervous system has been compared to any post mail delivery system and the endocrine system to the pony express. In brief explain this comparison.
A cell biologist cautiously measured the quantity of DNA in grasshopper cells growing in cell culture. Cells examined throughout the G2 phase of the cell cycle contained 200 units of DNA. What would be the quantity of DNA at G1 of the cell cycle in o..
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