The pH of your small intestines is around 7.5 and the pH of your large intestine can be 5.5. As substances travel from the small intestines to the large intestine, what would happen to the H+ ion concentration?
A. It increases by 100-fold.
B. It decreases 100-fold.
C. It decreases 10-fold.
D. It increases 10-fold.
E. It increases 2-fold.
Answer: A
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Which of the following are characteristics of self-compatible plants?
A. They are physically isolated. B. Their pollinators are common. C. They are wind pollinated. D. Carpels and stamens are on separate plants.
Nearly half of the 4,000 placental mammal species are:
a. rodents b. bats c. herbivores d. predators e. hoofed animals
Cilia and flagella are both made of ________
A) actin B) tubulin C) intermediate proteins D) phospholipids
When looking at plant and animal cells with an electron microscope, you notice that the plant cells have more Golgi membranes than the animal cells. This is most likely because unlike in animal cells, in plant cells the Golgi apparatus is involved in the production of
A. cytoplasm. B. mitochondria. C. chloroplasts. D. cell walls.