Which statements are true regarding the discovery of the double helix of DNA? select all that apply.
a) Watson, Crick, Wilkins and Franklin received in 1962 the Nobel prize for their work on DNA
b) Rosalind Franklin's X-ray diffraction showed that the DNA is a helix
c) Watson and Crick published their findings on the structure of the dNA without performing any experiments of their own
b) Rosalind Franklin's X-ray diffraction showed that the DNA is a helix
c) Watson and Crick published their findings on the structure of the DNA without performing any experiments of their own
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A cell can increase how fast a substance diffuses across its plasma membrane by inserting channels, which modify the
A) distance across the membrane. B) concentration gradient of the substance. C) size and mobility of the substance. D) membrane's permeability to the substance. E) charge of the substance.
The separation of plus and negative charges across the membrane creates a ________ difference, or voltage
A) kinetic B) potential C) concentration D) gradient E) graded
Which of the following is false about DNA fingerprinting?
A) determined by analyzing proteins B) unique to each individual with the exception of identical twins C) used extensively during crime scene investigations D) may be obtained from blood, semen, hair, and other tissues E) based on short tandem repeats (STRs) in the DNA
Differentiated cells in a developing embryo derive from
What will be an ideal response?