Answer the following question given this paragraph: Hormonal Regulation of Growth Hormonal regulation is required for the growth and replication of most cells in the body. Growth hormone (GH), produced by the anterior portion of the pituitary gland, accelerates the rate of protein synthesis, particularly in skeletal muscle and bones. Growth hormone has direct and indirect mechanisms of action. The first direct action of GH is stimulation of triglyceride breakdown (lipolysis) and release into the blood by adipocytes. This results in a switch by most tissues from utilizing glucose as an energy source to utilizing fatty acids. This process is called a glucose-sparing effect. In another direct mechanism, GH stimulates glycogen breakdown in the liver; the glycogen is then released into the blood as glucose. Blood glucose levels increase as most tissues are utilizing fatty acids instead of glucose for their energy needs. The GH mediated increase in blood glucose levels is called a diabetogenic effect because it is similar to the high blood glucose levels seen in diabetes mellitus. The indirect mechanism of GH action is mediated by insulin-like growth factors (IGFs) or somatomedins, which are a family of growth-promoting proteins produced by the liver, which stimulates tissue growth. IGFs stimulate the uptake of amino acids from the blood, allowing the formation of new proteins, particularly in skeletal muscle cells, cartilage cells, and other target cells, as shown in Figure 37.13. This is especially important after a meal, when glucose and amino acid concentration levels are high in the blood. GH levels are regulated by two hormones produced by the hypothalamus. GH release is stimulated by growth hormone-releasing hormone (GHRH) and is inhibited by growth hormone-inhibiting hormone (GHIH), also called somatostatin. Q: What is the first direct action of growth hormone? Choices: - stimulation of monoglyceride breakdown - stimulation of monoglyceride production - stimulation of triglyceride production - stimulation of triglyceride breakdown A:
stimulation of triglyceride breakdown
Answer the following question given this paragraph: Life on Earth is very diverse. The diversity of living things is called biodiversity . A measure of Earth's biodiversity is the number of different species of organisms that live on Earth. At least 10 million different species live on Earth today. They are commonly grouped into six different kingdoms. Examples of organisms within each kingdom are shown in Figure below . Q: What is the diversity of living things called? Choices: - degradation - life cycle - ecosystem - biodiversity A:
biodiversity
Q: Answer the following question given this paragraph: The dominant stage of the lifecycle of a fern is the sporophyte, which consists of large compound leaves called fronds. Fronds fulfill a double role; they are photosynthetic organs that also carry reproductive organs. The stem may be buried underground as a rhizome, from which adventitious roots grow to absorb water and nutrients from the soil; or, they may grow above ground as a trunk in tree ferns (Figure 25.20). Adventitious organs are those that grow in unusual places, such as roots growing from the side of a stem. Q: Which is the dominant stage of the lifecycle of a fern? Choices: - gametophyte - larvae - zygote - sporophyte A:
A: sporophyte
Question: Answer the following question given this paragraph: The stomach also releases a very strong acid, called hydrochloric acid. This acid kills most pathogens that enter the stomach in food or water. Urine is also acidic, so few pathogens can grow in it. Q: What is the acid that is released by the stomach that kills most pathogens that enter the stomach? Choices: - Nitric Acid - Hydrofluoric Acid - Sulfuric Acid - hydrochloric acid A:
Answer: hydrochloric acid
*Question*
Answer the following question given this paragraph: Some rocks contain little compasses too! As lava cools, tiny iron-rich crystals line up with Earth's magnetic field. Anywhere lavas have cooled, these magnetite crystals point to the magnetic poles. The little magnets point to where the north pole was when the lava cooled. Scientists can use this to figure out where the continents were at that time. This evidence clearly shows that the continents have moved. Q: As lava cools, tiny iron-rich crystals line up with earth's what? Choices: - gravitational field - oceans - molecular field - magnetic field A:
**Answer**
magnetic field
Q: Answer the following question given this paragraph: Example 3.5 Calculating Projectile Motion: Hot Rock Projectile Kilauea in Hawaii is the world's most continuously active volcano. Very active volcanoes characteristically eject red-hot rocks and lava rather than smoke and ash. Suppose a large rock is ejected from the volcano with a speed of 25.0 m/s and at an angle 35.0 above the horizontal, as shown in Figure 3.40. The rock strikes the side of the volcano at an altitude 20.0 m lower than its starting point. (a) Calculate the time it takes the rock to follow this path. (b) What are the magnitude and direction of the rock's velocity at impact?. Q: Kilauea in hawaii is the world's most continuously active volcano. very active volcanoes characteristically eject red-hot rocks and lava rather than this? Choices: - greenhouse gases - carbon and smog - magma - smoke and ash A:
A: smoke and ash