Four of the five answers are correct statements about the circulatory system. Select the exception:
a. The systemic circuit carries oxygenated blood.
b. Humans have an open circulatory system.
c. The function of the heart is to generate pressure to make the blood flow through the circulatory system.
d. The rate of blood flow varies throughout the circulatory system.
e. The interstitial fluid is returned to the circulatory system through the lymphatic system.
b
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How many genetically different children could your parents have produced with their combinations of gametes?
A) 46 B) 285 C) 8 million D) 64 trillion
Which of the following is a producer?
A) oak tree B) earthworm C) sun D) cat
Spermatids are produced by:
A) secondary spermatocytes. B) spermatogonia. C) sertiary spermatocytes. D) primary spermatocytes.
Which of the following is NOT a reason why growth rates in nature are slower than those in the lab?
a. Microbes in nature grow in mixed populations. b. Nutrient transport rates are slower in the environment. c. Distribution of nutrients throughout habitat is not uniform. d. Resources are frequently suboptimal.