In animal cells the main microtubule organizing center (or centrosome) is important in cell division
__________________Indicate whether the statement is true or false.
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Scientists recently cloned Louis Pasteur and put him back to work in a modern lab. He promptly developed a gel that breaks down proteins. Since he hasn't been around for some time,
he's unsure what the best application for his invention might be. Help him out. What pathogenic item in this gel would be most effective and safe at eliminating? A. Viroids on the surface of agricultural plant tissues B. Prions inside the central nervous system of cows C. Viruses on the surface of the skin D. Bacteria in the intestines of human beings E. The fungus that causes athlete's foot between people's toes
The use of the suffix "ase" on a word denotes a(n)
A. substrate. B. product. C. enzyme. D. electron acceptor. E. substrate AND electron acceptor.
Which of the following events must occur to cause a chromosomal translocation, such as that seen in individuals with chronic myelogenous leukemia (CML)?
A. One chromosome must break in two distinct locations. B. Two different chromosomes must break. C. A transposon must be present in one of the chromosomes. D. The broken ends must pair correctly. E. A mutation in the DNA must occur.
In tomatoes, red (R) is dominant to yellow (r), tall (D) is dominant to dwarf (d), and smooth (H) is
dominant to peach or hairy (h). (a) How many different genotypes are there in relationship to these three characteristics? (b) How many different phenotypes are there in relationship to these three characteristics? (c) How many different homozygous pure-breeding forms can be produced? What will be an ideal response?