Which of the following represents energy flow in a
grazing food web?
a. producers >>> detritivores >>> decomposers
b. producers >>> decomposers >>> detritivores
c. producers >>> herbivores >>> decomposers >>>
carnivores
d. producers >>> herbivores >>> carnivores >>>
decomposers
e. producers >>> herbivores >>> detritivores >>>
carnivores
Answer: d
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Triploid cells have three copies of each chromosome rather than two. If a triploid cell undergoes
meiosis, it produces inviable products. Why is this the case?
What will be an ideal response?1) The cause of cri-du-chat syndrome. _____ 2) The alteration of a chromosome that involves the addition of a piece of chromosome. _____ 3) A chart showing the genetic connections among individuals in a family. _____ 4) A situation in which both alleles for a certain trait produce functional proteins. ______ 5) A condition in which someone has different alleles for the same gene. _____
A) Codominance B) Duplication C) Incomplete dominance D) Heterozygous E) Pedigree F) Phenotype G) Gene H) Deletion I) Autosomes J) Linkage
Carbohydrate digestion begins in the ____
a. mouth b. stomach c. small intestines d. large intestines e. liver
Many kinds of disease-causing bacteria are resistant to the standard antibiotics that we use to control them. This is because
A. when bacteria are exposed to antibiotics they mutate. B. there is genetic variety within the species and those that already have genes for resistance are the ones that reproduce. C. new species of bacteria have evolved that are resistant to antibiotics. D. when the size of the population of a species of bacterium is reduced, genetic variety decreases.