Q: In which continent are meerkats most likely to be found? Read this paragraph and choose the correct option from the provided answers: Another example of cooperation is seen with meerkats. Meerkats are small mammals that live in Africa. They also live in groups and cooperate with one another. For example, young female meerkats act as babysitters. They take care of the baby meerkats while their parents are away looking for food. Choices: - North America - South America - Australia - africa A:
africa

Q: Plant-like protists produce oxygen through which process? Read this paragraph and choose the correct option from the provided answers: Plant-like protists are essential to the ecosystem. They are the base of the marine food chain, and they produce oxygen through photosynthesis for animals to breathe. They are classified into a number of basic groups ( Table below ). Choices: - respiration - metamorphosis - glycolysis - photosynthesis A:
photosynthesis

Q: Q: In eukaryotic cells, what divides before the cell itself divides? Read this paragraph and choose the correct option from the provided answers: In eukaryotic cells, the nucleus divides before the cell itself divides. The process in which the nucleus divides is called mitosis. Before mitosis occurs, a cell's DNA is replicated. This is necessary so that each daughter cell will have a complete copy of the genetic material from the parent cell. How is the replicated DNA sorted and separated so that each daughter cell gets a complete set of the genetic material? To understand how this happens, you need to know more about chromosomes. Choices: - electrons - cell wall - protons - nucleus A:
A: nucleus

Question: Q: What type of bonds between the bases at the center of the dna double helix hold the helix together? Read this paragraph and choose the correct option from the provided answers: DNA's three-dimensional structure is a double helix. The hydrogen bonds between the bases at the center of the helix hold the helix together. Choices: - helium bonds - ionic bonds - electron bonds - hydrogen bonds A:
Answer: hydrogen bonds

*Question*
Q: In response to high blood osmolarity, which can occur during dehydration or following a very salty meal, the osmoreceptors signal the posterior pituitary to release this? Read this paragraph and choose the correct option from the provided answers: Antidiuretic Hormone (ADH) The solute concentration of the blood, or blood osmolarity, may change in response to the consumption of certain foods and fluids, as well as in response to disease, injury, medications, or other factors. Blood osmolarity is constantly monitored by osmoreceptorsspecialized cells within the hypothalamus that are particularly sensitive to the concentration of sodium ions and other solutes. In response to high blood osmolarity, which can occur during dehydration or following a very salty meal, the osmoreceptors signal the posterior pituitary to release antidiuretic hormone (ADH). The target cells of ADH are located in the tubular cells of the kidneys. Its effect is to increase epithelial permeability to water, allowing increased water reabsorption. The more water reabsorbed from the filtrate, the greater the amount of water that is returned to the blood and the less that is excreted in the urine. A greater concentration of water results in a reduced concentration of solutes. ADH is also known as vasopressin because, in very high concentrations, it causes constriction of blood vessels, which increases blood pressure by increasing peripheral resistance. The release of ADH is controlled by a negative feedback loop. As blood osmolarity decreases, the hypothalamic osmoreceptors sense the change and prompt a corresponding decrease in the secretion of ADH. As a result, less water is reabsorbed from the urine filtrate. Interestingly, drugs can affect the secretion of ADH. For example, alcohol consumption inhibits the release of ADH, resulting in increased urine production that can eventually lead to dehydration and a hangover. A disease called diabetes insipidus is characterized by chronic underproduction of ADH that causes chronic dehydration. Because little ADH is produced and secreted, not enough water is reabsorbed by the kidneys. Although patients feel thirsty, and increase their fluid consumption, this doesn't effectively decrease the solute concentration in their blood because ADH... Choices: - adrenaline - salt - oxygen - antidiuretic hormone (adh) A:
**Answer**
antidiuretic hormone (adh)

*Question*
Q: What happens to the temperature of a system during phase change? Read this paragraph and choose the correct option from the provided answers: This plot of temperature shows what happens to a 75 g sample of ice initially at 1 atm and 23C as heat is added at a constant rate: AB: heating solid ice; BC: melting ice; CD: heating liquid water; D E: vaporizing water; EF: heating steam. Thus the temperature of a system does not change during a phase change. In this example, as long as even a tiny amount of ice is present, the temperature of the system remains at 0C during the melting process, and as long as even a small amount of liquid water is present, the temperature of the system remains at 100C during the boiling process. The rate at which heat is added does not affect the temperature of the ice/water or water/steam mixture because the added heat is being used exclusively to overcome the attractive forces that hold the more condensed phase together. Many cooks think that food will cook faster if the heat is turned up higher so that the water boils more rapidly. Instead, the pot of water will boil to dryness sooner, but the temperature of the water does not depend on how vigorously it boils. Choices: - increases - fluctuates rapidly - decreases - remains constant A:
**Answer**
remains constant