Selective uptake of molecules into a cell by vacuole formation after they bind to specific receptor proteins in the plasma membrane.
What will be an ideal response?
receptor-mediated endocytosis
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A protein on the surface of cytotoxic lymphocytes can elicit self-destruct mechanisms in target cells by interacting with
A) TGF? receptors. B) Death receptors. C) EGF receptors. D) Bcl-2. E) procaspase 3.
Microbial diversity is thought of in terms of phylogenetic diversity and functional diversity because
A) similar functional traits are often found in divergent phylogenetic groups. B) phylogenetic diversity dictates functional diversity in microbes. C) functional diversity only pertains to functions that are not phylogenetic. D) similar phylogenetic groups almost always have similar functional traits.
Which of the following statements correctly describes one of Chargaff's rules regarding DNA?
A. The percentages of adenine and thymine are roughly equal, as are the percentages of guanine and cytosine in the DNA of a given species. B. DNA base composition does not vary between species. C. The percentages of adenine and cytosine are roughly equal, as are the percentages of guanine and thymine in the DNA of a given species. D. DNA has a double helical structure.
Cilia and flagella are most similar in
a. length. b. the kinds of cells that have them. c. the number that cells usually have. d. their internal composition and structure. e. their location along the cell's periphery