The deepest underwater trench in the world is:
a. Mariana Trench.
b. Peru-Chile Trench.
c. Java Trench.
d. South Sandwich Trench.
e. Aleutian Trench.
A
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Optimal conditions for most mycobacterial cultures are:
a. 25°C to 30°C in the dark in an atmosphere of 2% carbon dioxide (CO2) and high hu-midity. b. 35°C in the dark in an atmosphere of 5% to 10% CO2 and high humidity. c. 35°C in the dark in a microaerophilic at-mosphere of 10% CO2 and high humidity. d. 32°C in the dark in an atmosphere of de-creased CO2 and increased humidity.
Mendel crossed true-breeding plants having yellow peas with plants having green peas. The resulting
plants all had yellow peas. An F1 cross resulted in of the plants having yellow peas and of the plants having green peas. What does this tell you about the alleles for color?
a. yellow is usually the dominant color, but sometimes green can be dominant b. green is the dominant color c. yellow is the dominant color d. yellow is the recessive color e. the F1 plants must have had some green peas that went unnoticed.
If an investigator removes the mesoderm from an
embryo, the development of which of the following systems is least likely to be affected? a. circulatory system b. muscle system c. reproductive system d. integumentary system e. excretory system
Complement proteins can form a system of proteins that create a pore in the membranes of bacteria. This system is
called the ____________________. Fill in the blank(s) with the appropriate word(s).