True or False: Many organisms that reproduce asexually are also capable of reproducing sexually at least part of the time
A. true
B. false
A
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Compare the molecular formula of a carbohydrate (CH2O)n with that of carbon dioxide (CO2). What does the presence of hydrogen atoms in carbohydrates indicate?
A) Carbohydrates are more reduced than carbon dioxide. B) Carbohydrates are more oxidized than carbon dioxide. C) Every carbon atom in a carbohydrate is bonded to four different atoms. D) Carbohydrates contain a carbonyl functional group.
Bollworms raised for decades in a lab without exposure to Bt were while those fed Bt were .
A. Rr; rr B. rr; RR C. Rr; RR D. RR; rr E. RR; Rr
Your friend read an article on the internet today about a new single-celled organism that has been discovered by scientists in Africa. She said the organism is the size of a mouse, and lives in freshwater streams. You tell her to check the source because you think she has read a hoax. How do you know?
1.Because an organism of that size would have been discovered years before now. 2.Single-celled organisms can’t survive in fresh water. 3.A single-celled organism could not attain that size. They are limited by surface-to-volume ratio. 4.There would have to be many more than one, since cells must come from other cells. If they only collected one, it must be a hoax.
For most of its approximately million year history, the human population has been in the ____ phase of population growth.
A. lag B. exponential growth C. deceleration D. stable equilibrium