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Q1. Evaluate the problems that animals face in locating source of a visual signal with the problems they face in locating the source of an acoustic signal. What aspects of these problems are inherent in physics of light and sound, and what aspects are consequences of the evolutionary history of animals you are considering?"
Q2. According to some theories, Earth's sun is approximately 5 billion years old. After about 10 billion years, this type of star runs out of fuel. The hydrogen in the core becomes depleted and cannot be used to form helium. The graphs below exemplify the chemical changes that occur inside a star at specific times.
Using information provided, what is the hydrogen/helium content inside a star that is the approximate age of our sun?
What is the dissimilarity between vag and vrg genes? How are BvgS and BvgA involved in regulation of virulence genes? What is a phase variation in B. pertussis and what causes it.
the oxaloacetate-malate couple is less negative than the NAD_- NADH couple. How are these values compatible with the transfer of electrons from malate to NAD_ in the TCA cycle?
In analyzing a big sample of yeast colonies on a petri dish, a geneticist finds an abnormal looking colony that is very small. This small colony was crossed with wild type, and products of meiosis were spread on a plate to produce colonies.
Which of the following is an important driving force in respiration?
Based on your knowledge of M-Cdk regulation, indicate two ways the activity of this essential complex might be shut down if DNA damage were detected.
Rank the given fatty acids from highest melting point to lowest melting point:
q1. diploid nuclei of ascomycete neurospora crassa contain 14 chromosomes. a single diploid cell in an ascus will
Ecoli with mutated Oric sequences can still replicate its chromosome, though very slowly. One mechanism of this origin independent replication depends on initiation of transcription.
Describe the structure and function of the three forms of RNA determine the primary structure of polypeptide chains during translation.
Two true-breeding mutant strains of Drosophila have black body color instead of the wild-type gray yellow. When the two strains are crossed, all the F1 flies have wild-type body color. How can these data be interpreted?
Which of the following is true for endergonic reactions?
A cross is made between a dark red kernel R1R1R2R2 and a white kernel r1r1r2r2 variety. Give the genotype and phenotype of the F1 and the F2 genotypes and ratios for the phenotypes dark red, medium dark, medium, light and white.
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