Heavy metals in contaminated soils can be taken up by hyper-accumulating plants. Lead and cadmium taken up this way are often accumulated in the plants'
A. rhizomes.
B. trichomes.
C. stomates.
D. sclerenchyma.
E. root nodules.
B. trichomes.
Some plant species have evolved the ability to sequester heavy metals within their tissues. Many of these plants partition off these contaminants in the trichomes found on the surface of their leaves.
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The suffix -emia means in the
A. body. B. lymph. C. interstitial tissue. D. blood.
One of the major differences between the first and second line of defense is that
A. the first line defenses are anatomical barriers whereas the second line defenses are mechanisms. B. the first line defenses are mechanisms whereas the second line defenses are physical barriers to infection. C. the first line defenses involve the respiratory tract whereas the second line defenses involve the gastrointestinal tract. D. the first line defenses involve complement proteins whereas the second line defenses involve antibodies.
In Drosophila, the allele red eyes (bw+) is dominant to the allele for brown eyes (bw). At another gene locus on the same chromosome, the allele for thin wing veins (hv+) is dominant to the allele for heavy wing veins (hv). Flies homozygous for bw and hv+ are crossed to flies homozygous for bw+ and hv to obtain doubly heterozygous F1 progeny.Given that these two gene loci are very closely linked, the phenotypic ratio in the F2 generation should be closest to
A. 3 red eye, thin wing veins: 1 brown eye, heavy wing veins B. 1 brown eye: 1 red eye: 1 heavy wing veins: 1 thin wing veins C. 1 brown eye, heavy wing veins: 2 red eye, thin wing veins: 1 brown eye, thin wing veins D. 1 brown eye, thin wing veins: 2 red eye, thin wing veins: 1 red eye, heavy wing veins
Which is the true statement about vaginosis and vaginitis?
A) Vaginitis describes vaginal inflammation while vaginosis does not. B) Vaginitis is always due to microbiome dysbiosis. C) The two conditions are always seen together. D) The two conditions are always mutually exclusive. E) Vaginosis is not likely to be sexually transmitted.