Biology, 13.03.2020 16:43 RealStephani
Researchers noted that about half of all species of bacteria contain small segments of DNA of about 20–50 base pairs derived from plasmids or viruses. The phrase clustered regularly interspaced short palindromic repeats (CRISPR) describes the organization of these viral DNA segments in the bacterial genome. Bacteria use CRISPR to:
a. transcribe RNA that combines with a protein that has an RNA-cleaving function.
b. copy part of the bacterial genome and incorporate it into a viral genome.
c. "remember" the first time it was infected with a virus.
d. transcribe RNA that combines with a protein that has a DNA-cleaving function.
e. identify viral DNA by complementary base pairing with RNA.
f. identify viral DNA by complementary base pairing with template DNA.
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Fill in the blank 1. digestion occurs in the small intestine through the action of enzymes. 2. urea, excess water, and other waste materials are eliminated in a water fluid called 3. can cause infections by injecting dna or rna into hosts. 4. the human immune system produces in response to a vaccine, which later can bind to and destroy a pathogen if it invades. 5. are structures that link bone to bone at a joint 6. in the heart, blood flows from the right atrium to the right ventricle, where it is pumped to the the words i can use are: lymphocytes gliding pivot gas urine absorption dermis fulcrum lungs chemical viruses capillary vertebrae esophagus tendons antibodies synapses ligaments kidneys pathogens
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Researchers noted that about half of all species of bacteria contain small segments of DNA of about...
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