What are cells that break down the matrix by secreting acids and enzymes and play a role in bone remodeling and repair?
A. Osteocytes
B. Yellow marrow
C. Osteoclasts
D. Osteocytes
E. Red marrow
Answer: C
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Which statement describes evidence in support of the endosymbiont theory?
A) The sequence of mitochondrial rRNA genes are most similar to the rRNA genes in purple bacteria. B) Mitochondrial and chloroplast DNA is organized into nucleosomes. C) Mitochondria and chloroplasts have genes that allow them to live independently. D) Mitochondria, chloroplasts, and cytoplasmic translation are inhibited by antibiotics such as chloramphenicol.
The difference in the appearance of the male and the
female is known as a. polymorphism. b. sexual dimorphism. c. the dioecious condition. d. sexual selection. e. a primary sexual characteristic.
The development and use of ____ ushered in the era of genomics when geneticists began planning ways to sequence
the 3.2 billion nucleotides in the human genome. a. transmission genetics b. the electron microscope c. recombinant DNA technology d. cytogenetics e. karyotypes
What two tissues transport materials throughout the entire plant body?
a. sclerenchyma and xylem b. phloem and xylem c. parenchyma and xylem d. sclerenchyma and collenchyma e. epidermis and xylem