Which muscle cells are designed for endurance?
A) hemoglobin B) slow-twitch cells C) fast-twitch cells D) myoglobin
Answer: B
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In humans, if non-disjunction led to an individual with a genotype of XO, that person would
A. be female because each cell lacks a Y chromosome. B. be male because each cell has only one X chromosome. C. display both male and female characteristics. D. not survive.
The most common isotope of carbon has an atomic number of 6 and a mass number of 12, while the
most common isotope of oxygen has an atomic number of 8 and a mass number of 16. A molecule of CO2 made up of these common isotopes has a molecular weight of ____.
a. 28 b. 44 c. 56 d. 14 e. 22
List the two major differences between meiosis and mitosis. What is the significance of these events?
What will be an ideal response?
Which of the following events is (are) related to the
origin of our solar system? a. explosions of dying stars b. formation of a dense cloud of dust and gas c. cooling of cosmic matter d. coalescing of cosmic matter influenced by gravity e. all of these