Which of the following is TRUE regarding plasmids?
A. Plasmids are small, usually a few thousand to 10,000 base pairs.
B. Plasmids are rarely found in prokaryotes.
C. Plasmids are contained within the bacterial chromosome.
D. Plasmids are linear.
E. Plasmids dominate in eukaryotes.
Answer: A
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The myoglobin protein, which carries oxygen in muscle cells, has only the first three levels of protein structure. What can you infer about myoglobin?
A. Myoglobin is made of nucleic acids B. Myoglobin lacks hydrogen bonds C. Myoglobin is made of only one polypeptide chain D. Myoglobin is not helical or pleated
During which Period was there lush vegetation, the age of the dinosaurs and the break up of Pangea?
a. Cambrian b. Mesozoic c. Paleozoic d. Jurassic e. Cretaceous
Specifically, what does it mean that an amino
acid or a fatty acid is essential?
a. it is needed in large amounts by the body b. the body cannot survive without it c. the body cannot synthesize it d. it is an essential component of digestive enzymes e. more than one of these describes what it means to be essential
The gap where there is no myelin sheath around a nerve fiber is called a node of Ranvier.
Answer the following statement true (T) or false (F)