Match the organism to the number of chambers in their heart. А. З +humans B. 0 + rats C. 5 + fish D. 1 frogs E. 2 F. 4

What is the the possible range of phi and psi angles? a. 0 to +180 degress b. 0 to +90 degrees c. -180 to +180 degress d. -90 to +90 degrees

Use the image to answer the question.   The ability of oxygen to bind hemoglobin changes with altitude as shown. Which statement, if true, BEST explains this observation?   A. The partial pressure of atmospheric oxygen decreases with altitude.   B. The partial pressure of atmospheric oxygen increases with altitude.   C. The partial pressure of atmospheric carbon dioxide decreases with altitude.   D. The partial pressure of atmospheric carbon dioxide increases with altitude.

Give typing answer with explanation and conclusion

In one subject the systolic (intra-arterial), diastolic, and mean pressures are 845mmHg, 79mmHg, and 91mmHg, respectively. Therefore, the atmospheric pressure is a. 0.92atm b. 0.93atm c. 0.94atm d. 0.95atm e. 0.96atm

+ 2. Using Chapter 40 (especially Fig 40.4) of our textbook, compare the circulatory systems of the perch and the frog by completing the following table: Comparison of the circulatory systems of the frog and the perch Open or closed Single or double circuit perch frog Number of atria Number of ventricles 3. Compare and contrast (in other words, describe similarities and differences of) the circulatory systems of the perch and the frog, with reference to how each system supports the lifestyle (including activity level) of each animal:

Myocardial infarction, or a heart attack, results if there is a lack of oxygen and nutrients brought to the heart tissue. A heart attack would result due to a blockage by arteriosclerosis of the а. coronary veins b. coronary arteries С. c. pulmonary veins d. pulmonary arteries

Table 2: DCMU     Time (min) A600 Control "Low" DCMU "High" DCMU 0 1.200 1.300 1.300 2 1.000 1.100 1.300 4 0.730 0.960 1.300 6 0.430 0.850 1.300 8 0.330 0.720 1.300 10 0.310 0.560 1.300 12 0.300 0.520 1.300 The negative control is "high" dcmu. 3. Why do we need this negative control for Part 2?

Some deep diving mammal compress their lungs to remove air. What is FALSE about this situation? A. Some whales have ribs with joints that help the compression. B. Removing air from lungs prevents lethal nitrogen bubbles (the bends). C. The animals store 02 in their blood and muscles during dives D. The air goes from their lungs into tiny spaces within their bones. Which is biggest? A. hemoglobin B. iron C. heme

1. Why do cardiac enzymes rise after an acute myocardial infarction? A. White cells are attracted to the site of muscle injury B. Injured fibers increase their synthesis of cardiac muscle enzymes C. Cardiac enzymes leak from the damaged muscle fibers in the bloodstream D. Blood flow to the injured muscle is increased