If histones are extracted from DNA, what would remain?
A. DNA only
B. DNA and tetranucleosomes
C. DNA and chromosomal scaffolding proteins
D. degraded segments of DNA
C
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Answer the question using the accompanying figure. According to the graph, which biome is defined as having the
highest overall mean annual precipitation?
a. savanna b. grassland c. tropical rainforest d. tundra e. desert
The hypothesis that mitochondria and chloroplasts originated from the phagocytic activity of
prokaryotes that was not followed by digestion is called the
a. theory of natural selection. b. endosymbiotic hypothesis. c. ribozymes-first hypothesis d. Oparin-Haldane hypothesis. e. stromatolite hypothesis
A positive effect associated with pesticide usage does not include
a. killing disease-causing insects. b. killing some pathogens. c. increasing food supplies. d. increasing profits for farmers. e. causing cancer.
Which of the following is not an organelle that has resulted from endosymbiosis?
a. mitochondrion c. apicoplast b. chloroplast d. endoplasmic reticulum