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The epidermis of a leaf is removed from a leaf and sections of the epidermis incubated in different concentrations of mannitol (asugar alcohol that does not enter plant cells). In .1M mannitol the epidermal cells neither gain nor lose weight. Sections of the epidermis placed in .6M mannitol become flaccid although although they do not change volume. From this information, calculate the original water potential, osmotic potential and pressure potential of the epidermal cells.
Aphids can reproduce sexually and asexually. Females reproduce by themselves and give birth to live females in summer. They also reproduce sexually and lay eggs that survive in summer and eggs that survive in the winter and hatch in the spring.
Would the blood pressure in the pulmonary capillaries at the bottom of a lung be the same as the blood pressure in the capillaries at the top of a lung in the standing individual? Which area would have the lower blood pressure?
What effect would the following mutations have on the expression of the enzyme coding sequences of the tryptophan operon. Select the letter on the right that describes the effect.
How many different proteins, each with a unique amino acid sequence, can be constructed with a length of five amino acids? Thats all the information given in the question. Need help don't know where to begin.
What traits of corn make using corn kernels (starch) unattractive as a starting material for bioethanol.
Which solute(s) were able to pass through 20 MWCO membrane? In accordance with your results, which solute had the highest molecular weight?
What basic similarities among mammals and differences between mammals (the ingroup) and reptiles (an outgroup) help support the hypothesis that all mammals share a common ancestor.
A patient with poor renal perfusion is treated with an ACE inhibitor and goes into renal failure. Explain the reason for the renal failure.
Why is it important to have a universal scheme for describing regions of the abdomen?
Provide two signs of SCID. Explain two options for expecting parents who have family members with SCID and are concerned their child will be affected with the immunodeficiency.
There are sixty one codons that each specify the addition of a specific gene there are no corresponding amino acid, however there are only about for anticodons how is that possible?
The mass of an empty Erlenmeyer flask and stopper was determined to be 52.06 grams. When filled with distilled water, the mass was 303.0 grams.
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