Suppose that you find a protist that has a single flagellum surrounded by a collar of microvilli. What could be concluded about this organism?
a. It is a choanoflagellate.
b. It is a plasmodial slime mould.
c. It is a cellular slime mould.
d. It is not an opisthokont.
Answer: a. It is a choanoflagellate.
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Chemical reactions involving ________ have been proposed as energy-yielding reactions for primitive organisms
A) Fe, O2, and H2 B) S, O2, and H2 C) S, and O2 D) S, and H2
A linear strand of DNA with two restriction enzyme cut sites will yield three fragments on digestion
Indicate whether the statement is true or false
The extremely flexible tissue that provides support in soft, nonwoody plants, allowing them to grow
upward, is: a. parenchyma tissue. b. collenchyma tissue. c. sclerenchyma tissue. d. dermal tissue. e. meristematic tissue.
Homologous chromosomes contain the same ____ but may contain different ____.
a)alleles, genes b)sister chromatids, genes c)alleles, sister chromatids d)genes, sister chromatids e)genes, alleles