An organism used to make a variety of industrial enzymes by fermentation is ________.
A. Penicillium
B. Salmonella
C. Aspergillus
D. E. coli
Answer: C
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Which of the following white blood cells alerts the immune system when an antigen is present?
a. neutrophils b. basophils c. eosinophils d. dendritic cells e. B and T lymphocytes
What does a gametophyte produce?
A) Haploid gametes B) Diploid gametes C) Haploid spores D) Diploid spores
Shannon has considered herself an extremely healthy person for most of her life. She is a marathon runner and watches her diet very carefully. She has 8% body fat, weighs 105 pounds, and is 5 foot 10 inches tall
Why might Shannon's health still be of concern? A) She is overweight for her height. B) She likely has metabolic problems associated with high blood pressure. C) She doesn't have enough body fat for menstruation or pregnancy. D) She doesn't consume enough nutrients for normal bodily functions.
The other species of humans that were alive contemporaneously with Homo sapiens were:
a. Homo neanderthalensis, Homo floresiensis, and Homo erectus. b. Australopithecus afarensis and Homo neanderthalensis. c. Australopithecus afarensis, Homo neanderthalensis, Homo floresiensis, and Homo erectus. d. Homo neanderthalensis and Homo floresiensis. e. Homo neanderthalensis and Homo erectus.