This animal has paired nerve cords that
connect to a simple brain. This animal is
a. a lobster.
b. a jellyfish.
c. an earthworm.
d. a grasshopper.
e. more than one of these
E
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Genetic counselors gather medical and family histories in order to construct a(n) ____________________, which will enable them to establish the inheritance of a genetic trait in a family
Fill in the blank(s) with correct word
What is the correct sequence of events in cross-bridge cycling?
A. Myosin cross-bridge binds to actin, the powerstroke moves the thin filament relative to the thick filament, ATP binds to myosin and cross-bridge detachment occurs, ATP is hydrolyzed and the myosin head is "cocked" B. The powerstroke moves the thin filament relative to the thick filament, myosin cross-bridge binds to actin, ATP binds to myosin and cross-bridge detachment occurs, ATP is hydrolyzed and the myosin head is "cocked" C. Myosin cross-bridge binds to actin, ATP is hydrolyzed and the myosin head is "cocked," the powerstroke moves the thin filament relative to the thick filament, ATP binds to myosin and cross-bridge detachment occurs D. Myosin cross-bridge binds to actin, ATP binds to myosin and cross-bridge detachment occurs, the powerstroke moves the thin filament relative to the thick filament, ATP is hydrolyzed and the myosin head is "cocked" E. These events can occur in any sequence without affecting muscle function.
The pages of your textbook consist mainly of material made by multicellular, photosynthetic
organisms that function as producers in ecosystems. These organisms belong to the kingdom ____.
a. Plantae b. Fungi c. Animalia d. “Protist” e. Bacteria
Which of the following processes does NOT
serve to maintain low pressure at the receiving end of sieve tube pipelines? a. sucrose conversion into cell-wall polysaccharides b. sucrose conversion into starch in the receiving regions c. sucrose conversion to glucose, which is then used in cellular respiration d. activity of companion cells e. conversion of sucrose to fructose in fruits