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A normal subject is breathing room air and expiring into a large collection bag. When the expired air is analyzed, the mean expired PECO2 is measured at 30 mm Hg. When the arterial blood is sampled, PaCO2 is measured at 50 mm Hg. The subject's respiratory frequency is 15 breaths per minute and her average tidal volume is 500 ml. 1. Calculate the physiological dead space fraction. 2. Calculate the alveolar ventilation. 3. Calculate the CO2 production rate.
Which of the following enzymes is used in replication of the lagging DNA strand? A. RNA polymerase B. DNA polymerase C. DNA ligase D. A and B only E. A, B, and C
A wild cherry tree has 5 pairs of chromosomes in its nucleus found in a cell in the vascular cambium. What is the number of chromosomes and the number of linear DNA strands during the G2 stage cell cycle?
IN humans, normal pigmentation is due to a dominant gene A. Albinism is due to the recessive allele a. A man without albinism marries an albino woman and their fist child is an albino. What are the genotypes of these 3 people?
Explain how nucleotides are enzymatically linked together during nucleic acid synthesis. Identify the specific carbons on the sugars that are involved (between what carbons is the phosphodiester bond formed?).
Determine which mutation is epistatic? Is the vestigial mutation dominant or recessive? Determine the phenotypic ratio that appeared in the dihybrid F2 generation, and use chi-square analysis to accept or reject this ratio.
Explain the general function of Respiratory system and describe how the Respiratory system contributes to the physiological homeostasis of human organism?
The gene has 32 exons. Removal of exons 3-5 should alter the reading frame and produce a protein with an early stop codon. How might removal of three exons lead to a stop codon that occurs in exon 6 instead of in exon 32?
How would stomata cause photorespiration in C3 plants? And why are C4 plants protected/ immune to photorespiration?
A forty-four year old man is recovering from third degree burns over 50 percent of his body surface area. His serum potassium level is low (2.9 mEq/L). Heexhibits postural hypotension and skeletal muscle weakness.
The ABO blood group assorts independently of the Rhesus (Rh) blood group and the MN blood group. Three alleles, IA , IB , and i, occur at the ABO locus.
Women's bladders, on average, are smaller than those of men. The distribution of bladder volume in women is approximately N (400, 75) in milliliters. Find the proportion of women's bladders with a volume between 500 and 600 ml.
In many countries, conservationists are trying to design national park systems so that "islands" of natural area (the big parks) are connected by thin "corridors" of undisturbed habitat. The idea is that this arrangement will allow animals and plants..
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