True or False: Nothing can be done to alter the impact of future human activity on the environment
A. true
B. false
B
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Which of the following is not true of the genus Lactobacillus?
A. They are responsible for spoilage of beer, milk, and meat. B. Many species are pathogenic in humans and animals. C. They are used in the production of fermented vegetable foods, beverages, sour dough, hard cheeses, yogurt, and sausages. D. They do not produce endospores.
Which of the following is true about glycosylated plasma membrane proteins?
A) Carbohydrate is added only after the protein is in the plasma membrane. B) The carbohydrate usually is one sugar and rarely more than 5 sugars long. C) Only one specific site is glycosylated on each protein. D) N-linked carbohydrates are linked to hydroxyl groups in protein R groups. E) The carbohydrates can be detected experimentally with ferretin-linked lectins.
If light rays are not focused evenly on the retina, a fuzzy image is formed. This condition is called
A. astigmatism. B. nearsightedness. C. farsightedness. D. cataracts. E. conduction deafness.
A type of lymphocyte called a(n) ________ detects cells with abnormal surface proteins and kills them
A) eosinophil B) NK cell C) neutrophil D) basophil E) mast cell