In general, transformation of most genes occurs at a frequency of one in every ________ cells
A) 10
B) 100
C) 1,000
D) 10,000
E) 1,000,000
C
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The glycolate pathway is also called ________, because CO2 is released and oxygen is consumed in a light-dependent manner.
Fill in the blank(s) with the appropriate word(s).
In sickle cell anemia, what happens to the hemoglobin molecule that causes the red blood cell to sickle?
a. a small part of it becomes hydrophobic b. a small part of it becomes hydrophilic c. a small part of it becomes polar d. a small part of it becomes negatively charged e. a small part of it becomes positively charged
Which of the following best describes the difference between autotrophs and photoautotrophs?
a. Autotrophs produce their own food, and photoautotrophs use the energy from light to covert CO2 into an organic form. b. Autotrophs do not produce their own food, and photoautotrophs do. c. Autotrophs produce their own food, and photoautotrophs do not. d. Autotrophs produce their own food, and photoautotrophs use the energy from chemicals to covert CO2 into an organic form.
Radiation therapy for cancer works because a cell's DNA is exposed during mitosis and is most vulnerable to damage from radiation. Because cancer cells are uncontrollably undergoing mitosis, they die when exposed to the treatment. The common side effects of radiation treatment are hair loss and vomiting. What does this imply?
A) Radiation treatment will be ineffective in treating stomach cancer. B) Radiation treatment will be most effective for the treatment of skin and stomach cancers. C) Both skin and stomach cancer will be made worse if treated with radiation. D) Both stomach and skin cells are constantly being replaced. E) Radiation therapy is an ineffective way to treat cancer.