What is the name of the structure formed when the 10 nm fibers of chromatin form a cylindrical filament of coiled nucleosomes?
What will be an ideal response?
solenoid structure
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Horizontal gene transfer is less prevalent in eukaryotic species because
A. of the presence of organelles in the cells of eukaryotic species. B. of the multicellularity in eukaryotic species, which is lacking in prokaryotic species. C. eukaryotic species reproduce by sexual reproduction. D. of multicellularity and sexual reproduction. E. of the presence of organelles and multicellularity.
In a spinal cord injury, nerve signals cannot proceed past the location of the injury. What part of the spinal cord was damaged if a person, who is quadriplegic, can move their head and neck, but not their arms, abdomen, or legs?
A. thoracic B. lumbar C. cervical D. sacral E. coccyx
Which structure grows faster than any other as the embryo develops?
a. the heart b. the nervous system c. the head d. the digestive system e. the urinary system
An enzyme raises the activation energy of the reaction it catalyzes
__________________ Indicate whether the statement is true or false.