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2. What other mechanisms would cause the differences in coleoptile length between light and dark grown seedlings?
3. Carbon dioxide needed for photosynthesis enters the leaf via the stomata but water is also lost when these pores are open. Water is often limiting and to limit water loss through stoma they are more abundant in the lower epidermis. Speculate why stoma in the lower epidermis loss less water than those in the upper epidermis.
Assume if we are assessing transcription of two genes, one containing a promoter and the second containing a cis –acting element and an enhancer.
Ralph is taking scuba diving classes, and is warned not to hold his breath as ascending from depth but to continuously release air from his mouth. What is the basis of this instruction and what is risk if it is ignored.
Compare and contrast the reproductive advantages, by means of seeds, among seed plants (i.e. gymnosperms, angiosperms) versus the spores of terrestrial seedless?plants (e.g. liverworts, mosses, ferns, horsetails). Must give sources.
A population of has been allowed to breed randomly for generations. 25% of the animals display a recessive trait aa, the same percentage as at the begining of breeding.
What is the connection among ribosomes, endoplasmic reticulum, golgi apparatus and the plasma membrane? How do they work together in the system.
How many oxygen atoms are required to oxidize the protein leucine?
how nondysjunction happens and why it is so dangerous or fatal to a developing fetus. What causes Down's syndrome and why is it one of only two survivable nondysjunction events?
A friend of yours is complaining that every time he eats ice cream, a good cheesey pizza, or really, any dairy products, he experiences very painful abdominal cramping, gas, and diarrhea.
There are four main categories of molecules of life. Complete the table given by indicating, the name of each of the four categories of the molecules of life
What is different about the photopigment in the reaction center, compared with other photopigments in the antenna complex?
Which of the following statements about hydrogen bonds is true
Which organelle was most likely a bacteria at one point in the distant past?
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