Which of the following structures is unpaired?
A) seminal vesicle
B) ovary
C) bulbourethral gland
D) prostate gland
D) prostate gland
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Which of the following best describes the innate immunity?
A. It is a response to a specific pathogen. B. It is the basis for the use of vaccines. C. It reacts to a wide variety of pathogens. D. It is a response to a specific pathogen AND is the basis for the use of vaccines.
In what way do the various membranes of a cell differ?
a. Phospholipids are found only in certain membranes. b. Certain proteins are unique to each membrane. c. Only certain membranes are constructed from molecules with dual solubility. d. Only certain membranes of a cell are selectively permeable. e. Some membranes have hydrophobic surfaces exposed to the cytoplasm, while others have hydrophilic surfaces facing the cytoplasm.
What strategies are employed in habitat conservation? Select all that apply.
A. ecosystem replacement B. identifying areas rich in endemic species C. rehabilitation of previously damaged areas D. identifying representative habitats E. establishing a captive breeding program
Woody plants have which two compounds in their cell walls?
A) chlorophyll and cellulose B) chitin and lignin C) cellulose and lignin D) chitin and cellulose