Answer the following question given this paragraph: Watch this video (http://openstaxcollege. org/l/vertebrate_evol) of biologist Mark Kirschner discussing the "flipping" phenomenon of vertebrate evolution. The nervous system is made up of neurons, specialized cells that can receive and transmit chemical or electrical signals, and glia, cells that provide support functions for the neurons by playing an information processing role that is complementary to neurons. A neuron can be compared to an electrical wireit transmits a signal from one place to another. Glia can be compared to the workers at the electric company who make sure wires go to the right places, maintain the wires, and take down wires that are broken. Although glia have been compared to workers, recent evidence suggests that also usurp some of the signaling functions of neurons. There is great diversity in the types of neurons and glia that are present in different parts of the nervous system. There are four major types of neurons, and they share several important cellular components. Q: The nervous system is made up of these? Choices: - fibers - blood cells - muscles - neurons A:
neurons
(Question)
Answer the following question given this paragraph: Two natural products of mollusks used for decorations and jewelry are pearls and nacre. A pearl is the hard, round object produced within the mantle of a living shelled mollusk. Pearls are produced by many bivalves when a tiny particle of sand or grit is trapped between the mantle and the shell. It's as if the mollusk has a splinter. The mollusk forms a protective covering around the irritant. Most pearls used as jewelry are made by pearl oysters and freshwater mussels; most of the ones sold are cultured and not wild. Natural pearls have been highly valued as gemstones and objects of beauty for many centuries. Q: What is the term for the hard, round object produced within the mantle of a living shelled mollusk? Choices: - ball - root - glass - pearl A:
(Answer)
pearl
Ques: Answer the following question given this paragraph: Proteins are the most numerous and diverse biochemical compounds, and they have many different functions. Some of their functions include:. Q: What are the most numerous and diverse biochemical compounds? Choices: - lipids - acids - Carbohydrates - proteins A:
Ans: proteins
(Q).
Answer the following question given this paragraph: Frogs The frog order also includes toads. Unlike other amphibians, frogs and toads lack a tail by adulthood. Their back legs are also longer because they are specialized for jumping. Frogs can jump as far as 20 times their body length. That's like you jumping more than the length of a basketball court! red-eyed tree frog. Q: Frogs and toads have long back legs which are specialized for what action? Choices: - flying - swimming - sprinting - jumping A:
(A).
jumping
Ques:Answer the following question given this paragraph: Vestigial structures, or structures that have lost their use through evolution, are important evidence of evolution. Q: What do we call structures that have lost their use through evolution, which serve as important evidence of evolution? Choices: - extinct - adaptative - primordial - vestigial A:

Ans:vestigial
Question: Answer the following question given this paragraph: Radioactive dating is the use of radioactive decay to estimate the ages of fossils and rocks. An example is carbon-14 dating. Q: What is the term for the use of radioactive decay to estimate the ages of fossils and rock? Choices: - isotope test - microwave theory - radioactive illustrating - radioactive dating A:
Answer:
radioactive dating