Bees use which information for locating food and the
hive?
a. local topographic features
b. odors
c. magnetism
d. the angle of the sun
e. distance between plants
Answer: d
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Which of the following groups of people would be most comfortable at cooler temperatures?
A. calm people
B. quiet people
C. sedentary people
D. active people
The building of a large organic molecule from small subunits involves multiple ________
A) hydrolysis reactions B) osmotic reactions C) dehydration synthesis reactions D) hydrosynthetic reactions
You decide to repeat the Meselson-Stahl experiment, except this time you plan to grow the E. coli cells on light 14N medium for many generations and then transfer them to heavy 15N medium and allow them to grow for 2 additional generations (2 rounds of DNA replication). If the semiconservative model of DNA replication is correct, what is the expected distribution of DNA in the density gradient after two rounds of replication?
A. One band of intermediate density and one band of heavy density. B. One band of intermediate density and one band of light density. C. One band of intermediate density. D. One band of heavy density and one band of light density. E. One band of heavy density.
Compared with modern humans, Neanderthals had all the following features except:
A. Tall, thin body B. Stockier build C. Thicker bones D. Bulkier muscles E. Shorter stature