In mammals, the number of mitochondria per cell is highly variable. Which of the following would have the largest number: skin cells, red blood cells, or skeletal muscle cells?
What will be an ideal response?
skeletal muscle (cells)
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A researcher isolates a species of fungus that only reproduces sexually. He introduces individual fungi—all of the same mating type (e.g., with the same mating type alleles)—into a petri dish. What do you expect will happen with the fungi in this dish?
A. Fungi in the dish will mate, forming spores via sexual reproduction. B. Fungi in the dish will not mate, but will from spores via asexual reproduction. C. No spores will be formed by fungi in the petri dish.
In which animal is a crosscurrent flow system used for air exchange?
A. mammals B. fish C. birds D. lizards E. whales
How could the number of coexisting species within a community be increased?
A) increased total niche space (variety of resources) B) increased niche overlap C) increased specialization D) A, B, C, or any combination of these
The only part of an amino acid that differs from other amino acids is its R group.
Answer the following statement true (T) or false (F)