What is a transgenic organism?
a. an organism with multiple copies of the
same gene
b. an organism that has genes from another
species
c. an organism that does not use DNA to
specify proteins
d. an organism that has had its entire genome
sequenced
e. an organism that has been DNA profiled
B
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Answer the following statements true (T) or false (F)
1. Sodium and potassium ions can easily diffuse through the lipid bilayer of plasma membranes. 2. Transport of salts against their concentration gradients is energetically expensive. 3. If you measured the urine concentration of a freshwater fish, you would find that it was more concentrated than its blood. 4. If you measured the urine concentration of a saltwater fish, you would find that it was more concentrated than its blood.
The doctor informs you that your grandmother's stroke has caused damage to Wernicke's area. Which activity is likely to become more difficult for her?
A. walking B. doing laundry C. having a conversation D. sleeping E. mathematical calculations Clarify Question · What is the key concept addressed by the question? · What type of thinking is required? Gather Content/Choose Answer · What do you already know about Wernicke’s area? What other information is related to the question? Reflect on Process · Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?
Trichoplax adhaerens has no nerve cells, but
scientists have discovered a. genes that encode signaling molecules. b. a response to harsh chemicals. c. movement toward a food source. d. adherence genes. e. none of these.
In the CRISPR/Cas system ________.
A. methylated DNA sequences are hydrolyzed, effectively destroying the viral DNA B. bacteria integrate portions of the viral genome into their own so they have a molecular snapshot of their attacker to prevent future encounters C. methylase enzymes add methyl groups to the viral nucleic acids, preventing transcription D. restriction endonucleases digest viral genomes once they enter the cell if the viral DNA is not methylated