The important solvent associated with living things is ________.
A. sodium chloride
B. benzene
C. water
D. ethyl alcohol
E. carbon dioxide
Answer: C
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Answer the following statements true (T) or false (F)
1. The most common cause of cystitis is Escherichia coli. 2. The most common cause of urethritis is Chlamydia trachomatis. 3. The yeast Candida albicans is one of the three most common causes of vaginitis in the United States. 4. Streptococcus pneumoniae is one of the three major causes of bacterial meningitis. 5. Meningitis could be caused by a virus, a bacterium, a fungus, or a protozoan.
Cystic fibrosis
a. results from a mutation in a specific membrane transport protein. b. is characterized by inadequate chloride and water movement across epithelial cells. c. causes low grade bacterial infections in the lungs to persist for years. d. is a common, fatal genetic disorder. e. is all of these.
The total resources a population consumes and the wastes it produces is its ____
a. ecological footprint b. vital capacity c. carrying capacity d. nonrenewable resources e. limiting factor
In a simple Mendelian monohybrid cross, true-breeding tall and short plants are crossed, and the F1 plants, which are all tall, are allowed to self-pollinate. What fraction of the F2 generation are both tall and heterozygous?
a. 1/8 b. 1/4 c. 1/3 d. 2/3 e. 1/2