The first observed cells were from ____
a. cork
b. a maple leaf
c. human skin
d. pollen
e. bacteria
ANSWER: a
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In the mammalian heart, the systemic and pulmonary circuits ____
a. carry only oxygenated and deoxygenated blood, respectively b. carry only deoxygenated and oxygenated blood, respectively c. mix during times of stress d. intermix freely e. are completely separate
Today the term “algae” is used primarily for
organisms in the group(s) a. bacteria. b. protista. c. plantae. d. bacteria and protista only. e. bacteria, protista, and plantae.
Organized sports can be very competitive, even for young children. Little League players are often pushed to develop such skills as perfecting a curve ball. However, repeatedly trying to throw a curve ball can cause injury in growing bone. What part of
the bone is most likely affected? What will be an ideal response?
It is actually the 16S rRNA component of a 30S ribosomal subunit which is responsible for recognition of a Shine-Dalgarno sequence
Which one of the following sequences in the 16S rRNA would you predict is responsible for the interaction between small subunit and mRNA? A. 5-AGGAGGU-3' B. 5-UCCUCCA-3' C. 3-UCCUCCA-5' D. 5-UGGAGGA-3' E. 3-UAC-5'