Imagine that you are an archaeologist on a dig somewhere on an East Asian island and than you begin to excavate an area littered with stone tools that also has the remains of an ancient fire. Subsequent carbon dating of the charcoal from the fire yields
a date of 100,000 years before the present. Given these circumstances, which species would you expect most likely set that fire?
A) Homo ergaster B) Australopithecus afarensis
C) Homo erectus D) Ardipithecus ramidus
Answer: C
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An ovule usually develops directly into a fruit
____________________ Indicate whether the statement is true or false.
"Artery" and "vein" are defined by whether they carry blood to the heart or away from the heart. If they were defined by whether they carried oxygenated or deoxygenated blood, we would have to change the name(s) of
A. the pulmonary artery and vein; they would have to be switched. B. the coronary artery and vein; they would have to be switched. C. the hepatic portal vein to a hepatic portal artery. D. the hepatic and renal systems; they would have to be switched. E. none, since the aorta and vena cava do not have "artery" and "vein" in their name.
Which cells will be expected to have the most numerous lysosomes?
What will be an ideal response?
Sweat glands produce (lysozyme/dermcidin/acid), which destroys the cell wall of bacteria by cleaving the bonds between the sugar subunits.
Fill in the blank(s) with the appropriate word(s).