Which of the following will result when 1% to 5% agar is added to nutrient broth, boiled and cooled?
A. a liquid medium
B. a mixed culture
C. a solid medium
D. a pure culture
E. a contaminated medium
Answer: C
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Which of these fungal features supports the phylogenetic conclusion that fungi are more closely related to animals than plants?
A) Fungi are able to change their body shape continuously throughout their life. B) Zygomycetes have flagellated gametes. C) Fungi store polysaccharides as starch. D) The cell walls of fungi are made of chitin.
Cholesterol is
a. synthesized in the large intestine. b. remodeled into vitamin A. c. used in the construction of cell membranes. d. a component of plant cell walls. e. all of these.
The pituitary hormone associated most directly with metabolic rate plus growth and development is
a. ACTH. b. TSH. c. FSH. d. LH. e. ADH.
Your study buddy is frustrated. "This book says that a single gene can make mice exhibit a certain behavior. That's ridiculous! How can you build any kind of neural circuit with just one gene?" What is your response?
A. "Some genes are longer than others, over 1000kb -- they have enough information to encode a full neural circuit." B. "What the book really means is: all else being equal, one variant of a gene is associated with higher levels of the behavior than the other variant of the gene. All the other thousands of genes are still needed to develop the brain. But variation in one gene can change how a certain neural circuit will behave." C. "If the book says so it must be true. Ours is not to question why." D. "Mice are a lot simpler than we are, and their brains are smaller. One gene is plenty for them to build a circuit."