Which of the following secretes milk, sweat, saliva, or some other substance through a duct?
A. Connective tissue
B. Endocrine gland
C. Connective tissue
D. Exocrine gland
E. Microvillus
Answer: D
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Global climate change is likely to increase the rate of extinction worldwide. What pollutant is most implicated in this problem?
A) nitrous oxides B) carbon dioxide C) sulfur dioxides D) chlorofluorocarbons
What group of molecules is represented in this structure?
a. structural proteins
b. polysaccharides
c. triacylglycerols
d. phospholipids
e. polypeptides
You and your lab partner are observing a cell under a microscope, but you do not know whether it is a eukaryote or a prokaryote. Which of the following observations regarding the chromosomes would you use to immediately conclude that the cell is a
eukaryote? A) The chromosomes are circular in structure. B) The chromosomes are housed in a membrane-enclosed nucleus. C) The chromosomes contain very few proteins. D) The chromosomes are very simple in structure.
Samantha gets into an elevator in a large skyscraper, and the doors close. She hears no noise, feels no vibration, and sees no movement, but she nevertheless knows that she is on her way up. What specific part of her ear is allowing her to know that she
is ascending? A) stapes B) organ of Corti C) saccule D) utricle