Generally, heavy metals, except silver, have been proven to be too toxic for use on human tissue and are no longer used medically
Indicate whether this statement is true or false.
TRUE
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What is the difference between a dideoxynucleotide (ddNTP) used in sequencing and regular deoxynucleotides?
a. ddNTPs are tagged with radiolabels. b. ddNTPs have 3 extra phosphate groups. c. ddNTPs lack the free 3’ OH group on the five-carbon sugar. d. ddNTPs are bound by hydrogen bonds instead of phosphodiester bonds.
Which of the following are examples of gonadotropins?
A. prolactin and oxytocin B. follicle-stimulating hormone and oxytocin C. luteinizing hormone and estrogen D. prolactin and estrogen E. follicle-stimulating hormone and luteinizing hormone
In garden peas, one pair of alleles controls the height
of the plant, and a second pair of alleles controls flower color. The allele for tall (D) is dominant to the allele for dwarf (d), and the allele for purple (P) is dominant to the allele for white (p). A tall purple crossed with a tall purple produces 3/4 tall purple and 1/4 tall white. What is the genotype of the parents? What will be an ideal response?
To facilitate respiration, birds have extensions of their lungs called ____, which reach into all parts of their bodies
a. tracheal tubes b. spiracles c. air bladders d. parabronchi e. air sacs