Bacterial endospores are used for
A) forming biofilms.
B) bacterial reproduction.
C) keeping the bacteria alive under harsh conditions.
D) attracting viruses.
E) bioremediation.
C
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Think about the organization of a food web, and then classify each of the following organisms as a primary producer, a primary consumer, or a secondary consumer. More than one label may apply to each organism
Herbivore __________________________________________ Tyrannosaurus rex __________________________________________ Brown algae __________________________________________ Venus flytrap __________________________________________ What will be an ideal response?
Match the activity that best matches each enzyme
A) elongates DNA strand B) nicks DNA ahead of replication fork to relax supercoiling in the DNA C) covalently links breaks in sugar-phosphate backbone D) synthesizes RNA primers for DNA synthesis E) unwinds double-stranded DNA F) primer removal and replacement 1) helicase 2) gyrase 3) primase 4) DNA polymerase III 5) DNA polymerase I 6) ligase
The oldest "manufactured" tools have been found in:
a. North America b. Eurasia c. Africa d. Australia e. South America
Luke sprained his ankle, tearing some of the collagen protein that forms his ligaments. Some types of collagen consist of three polypeptide chains twisted together to form a rope-like strand. What level of protein structure does this rope-like strand represent?
A. primary B. secondary C. tertiary D. quaternary