Answer the following question given this paragraph: The cells you have learned about so far are much smaller than the period at the end of this sentence, so they are normally measured on a very small scale. The smallest prokaryotic cell currently known has a diameter of only 400 nm. Eukaryotic cells normally range between 1 100m in diameter. The mouse cells in Figure above are about 10 m in diameter. One exception, however, is eggs . Eggs contain the largest known single cell, and the ostrich egg is the largest of them all. The ostrich egg in Figure above is over 10,000 times larger than the mouse cell. Q: What kind of structure contains the largest known single cell? Choices: - proteins - Ovaries - sperm - egg A:
egg
(Question)
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:
(Answer)
stimulation of triglyceride breakdown
Ques: Answer the following question given this paragraph: Mammals have four limbs and produce amniotic eggs. Q: Mammals have four limbs and produce what kind of eggs? Choices: - placental - umbilical - hard-shelled - amniotic A:
Ans: amniotic
(Q).
Answer the following question given this paragraph: The transmission of nerve impulses between neurons is like the passing of a baton between runners in a relay race. After the first runner races, she passes the baton to the second runner. Then the second runner takes over. Instead of a baton, a neuron passes neurotransmitters to the next neuron. Q: Like a runner passing a baton, the transmission of nerve impulses between neurons depends on what? Choices: - enzymes - axons - receptors - neurotransmitters A:
(A).
neurotransmitters
Ques:Answer the following question given this paragraph: Eggs are female gametes that form in the ovaries and are released into the fallopian tubes. Q: What are the female gametes that form in the ovaries? Choices: - sperm - spermatozoa - genes - eggs A:

Ans:eggs
Ques:Answer the following question given this paragraph: Sunlight is turned into electricity at a solar power plant. A large group of mirrors focuses sunlight on one place. This place is called a receiver ( Figure below ). At the receiver, a liquid such as oil or water is heated to a high temperature. The liquid transfers its heat by conduction . In conduction, energy moves between two objects that are in contact. The warmer object transfers heat to the cooler object. At a solar power plant, the energy conducted by the heated liquid is used to make electricity. Q: What does a solar power plant turn sunlight into? Choices: - machinery - batteries - mechanical energy - electricity A:

Ans:
electricity