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Q1. The pH of the inner thylakoid space has been measured, as have the pH of the stroma and of the cytosol of a particular plant cell. Which, if any, relationship would you expect to find?
Q2. A student tests the second law of motion by acceleration a block of ice at a rate of 3.5 m/s2. If the ice has a mass of 12.5 kg, what force has to the student applied to the ice?
Q3. The atomic mass of a sample of oxygen, which has O-16, O-17, and O-15 isotopes, is given on periodic table as 15.9995. How was this number determined?
What is the outcome of synapsis, a significant event in meiosis? a. side-by-side alignment of nonhomologous chromosomes b. chiasma segregation c. monad movement to opposite poles d. dyad formation e. side-by-side alignment of homologous chromosome..
Henri tested the effects of a blood pressure reducing drug and found that blood pressure dropped significantly in those treated but did not change in an untreated control group. What is a reasonable conclusion from this experiment?
The next litter produced 8 white, mule-footed offspring and one white clove-footed pig. Now, what is the most probable genotype of the sow.
Explain why the increased prevalence of sickle cell disease among African Americans actually has more to do with the environment than skin color or other phenotypes used to define races.
The sexually transmittable disease gonorrhea has become increasingly resistant to treatment with antibiotics. What is the most likely scientific explanation?
The hemoglobin beta locus has a second variant besides hemoglobin beta S, called hemoglobin beta C. A survey turned up the following genotype frequencies for the A and C alleles.
The signaling mechanisms used by a steroid-hormone receptor and by an ion channel linked receptor have very few components. Can either mechanism lead to an amplification of the initial signal? If so, how? Ideas are included.describe an amplificati..
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.
Show the lines of current flow to unexcited parts of the cable. Elucidate how these local currents cause the action potential to propagate. A common mistake is to confuse the currents that flow throughout the action potential the voltage-clamp curren..
Think of the beaver's digestive organ system. Clarify its overall role. List several of the organs in this system, describe how each functions, and outline how organs work together to carry out the role of the organ system.
During transcription DNA is transcribed into an hnRNA or pre-RNA molecule. Which of the following statements about the relationship between hnRNA and mRNA is true.
Describe the three main cellular components of the blood and explain what might cause abnormal numbers of each of these components.
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