You are on the committee to update the design of the hospital NICU (neonatal intensive care unit), which currently has incubators for the babies but not much else. Based on what you have learned about Harlow's experiments with rhesus monkeys, what would you suggest adding to the NICU to improve the babies' health and well-being?
A. comfortable chairs for parents to hold their babies
B. pheromones
C. white-noise devices to mask the sound of beeping machines
D. softer lighting
Answer: A
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Which of the following is not characteristic of ciliates?
a. They use cilia as locomotory structures or as feeding structures. b. They are relatively complex cells. c. They can exchange genetic material with other ciliates by the process of mitosis. d. Most live as solitary cells in fresh water. e. They have two or more nuclei.
You are hiking in a forest and come upon a mysterious plant, which you determine is either a lycophyte sporophyte or a pterophyte sporophyte. Which of the following would be most helpful in determining the correct classification of the plant?
A) whether or not it has true leaves B) whether it has microphylls or megaphylls C) whether or not it has seeds D) its height
When in its life cycle does a B cell first exhibit its particular surface antigen receptor?
A) after the memory cell giving rise to it divides B) before it ever encounters an antigen C) after it encounters several antigens D) after it encounters a single antigen
Regarding Pasteur's experiments with the S-neck flask, which of the following statements is true?
a. There was air involved. b. There was a food source involved. c. Any possibility of contamination was removed. d. All microorganisms were killed before beginning. e. All of these.