Answer the following question given this paragraph: Q: What do you call different organs working together? Choices: - cellular system - endocrine system - maturation systems - organ systems A:
organ systems
Answer the following question given this paragraph: The stratosphere is the layer above the troposphere. Temperature increases with altitude in this layer. The ozone layer occurs here. Q: What is the layer above the troposphere? Choices: - thermosphere - mesosphere - troposphere - stratosphere A:
stratosphere
Q: Answer the following question given this paragraph: The epidermis is the outer layer of skin. It consists almost entirely of epithelial cells. There are no blood vessels, nerve endings, or glands in this skin layer. Nonetheless, this layer of skin is very active. It is constantly being renewed. How does this happen?. Q: Lacking blood vessels, nerve endings, or glands, the epidermis is the outer layer of what? Choices: - liver - brain - lungs - skin A:
A: skin
Question: Answer the following question given this paragraph: Millions of fossils have been found since Darwin's time. They show that evolution may occur in fits and starts. Long period of little or gradual change may be interrupted by bursts of rapid change. The rate of evolution is influenced by how the environment is changing. Today, Earth's climate is changing rapidly. How do you think this might affect the rate of evolution?. Q: Fossil records show that what process may occur in "fits and starts"? Choices: - generation - isolation - variation - evolution A:
Answer: evolution
*Question*
Answer the following question given this paragraph: 3. Sponges have specialized cells called collar cells. Describe how collar cells are specialized for the functions they serve. Q: What are the specialized cells of sponges called? Choices: - plant cells - helper cells - t cells - collar cells A:
**Answer**
collar cells
(Q).
Answer the following question given this paragraph: For a bacteria, many aspects of gene regulation are due to the presence or absence of certain nutrients. In prokaryotes, repressors bind to regions called operators that are generally located immediately downstream from the promoter. Activators bind to the upstream portion of the promoter. Q: In prokaryotes, what are the regions called that repressors bind to? Choices: - elements - enablers - consumers - operators A:
(A).
operators