Media that contain a full complement of nutrient substances, including amino acids, and other
chemicals that normal strains use for themselves, is called:
a. agar media.
b. minimal medium.
c. nutritious media.
d. complete medium.
e. rich media.
D
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Which of the following is not an effect of epinephrine throughout the body?
A. Promotes the breakdown of glycogen in skeletal muscle cells B. Relaxes lung airways C. Stimulates heart muscle cells D. A person feeling energized after drinking a cup of caffeinated coffee E. The body's ability to digest a large meal
In plants, genes E, F, and G are on one chromosome arm. Alternate dominant and recessive alleles of all three genes determine visible traits: E = normal leaf number, e = extra leaves, F = normal stems, f = furry stems, G = normal flower size, g = gigantic flowers. A plant that is heterozygous for an inversion involving all three genes is crossed to a plant with extra leaves, furry stems, and gigantic flowers. The arrangement of alleles is shown in the diagram. If you look at thousands of offspring of this cross, what phenotypes do you expect to see?(Select all that apply.)
A) Most, but not all, offspring will be normal for all three traits or have extra leaves, furry stems, and gigantic flowers.
B) Due to double crossovers between E and F and F and G, a very small number of offspring will have only furry stems, or only extra leaves and gigantic flowers.
C) Half of the offspring will be normal for all three traits and half will have extra leaves, furry stems, and gigantic flowers.
D) Due to crossovers between E and F in parent 1, a small number of offspring will have only extra leaves, or only furry stems and gigantic flower size.
E) Due to crossovers between F and G, a small number of offspring will have only extra leaves and furry stems, or only gigantic flower size.
In many ferns,
a. gametes are produced from meiosis. b. asexual reproduction occurs more frequently than sexual reproduction. c. fertilization is followed by formation of gametes. d. the gametophyte stage is completely dependent upon the sporophyte stage. e. more than one of these is true
Beta-lactam drugs target members of Domain _______.
A. Eukarya B. Archaea C. Bacteria