Q: What term is defined as a way of writing very large or small numbers that uses exponents? Read this paragraph and choose the correct option from the provided answers: Quantities in science may be very large or very small. This usually requires many zeroes to the left or right of the decimal point. Such numbers can be hard to read and write accurately. That's where scientific notation comes in. Scientific notation is a way of writing very large or small numbers that uses exponents. Numbers are written in this format:. Choices: - certain notation - exponential notation - quadratic notation - scientific notation A:
scientific notation

(Question)
Q: Most oxygen in blood is bound to a protein called what, and carried to the tissues? Read this paragraph and choose the correct option from the provided answers: Transport of Oxygen in the Blood Although oxygen dissolves in blood, only a small amount of oxygen is transported this way. Only 1.5 percent of oxygen in the blood is dissolved directly into the blood itself. Most oxygen98.5 percentis bound to a protein called hemoglobin and carried to the tissues. Hemoglobin Hemoglobin, or Hb, is a protein molecule found in red blood cells (erythrocytes) made of four subunits: two alpha subunits and two beta subunits (Figure 39.19). Each subunit surrounds a central heme group that contains iron and binds one oxygen molecule, allowing each hemoglobin molecule to bind four oxygen molecules. Molecules with more oxygen bound to the heme groups are brighter red. As a result, oxygenated arterial blood where the Hb is carrying four oxygen molecules is bright red, while venous blood that is deoxygenated is darker red. Choices: - platelete - hydrogen - plasma - hemoglobin A:
(Answer)
hemoglobin

Ques: Q: Hurricanes and winter storms both develop from what, which often form when the jet stream dips south in the winter? Read this paragraph and choose the correct option from the provided answers: Like hurricanes, winter storms develop from cyclones. But in the case of winter storms, the cyclones form at higher latitudes. In North America, cyclones often form when the jet stream dips south in the winter. This lets dry polar air pour south. At the same time, warm moist air from the Gulf of Mexico flows north. When the two air masses meet, the differences in temperature and pressure cause strong winds and heavy precipitation. Blizzards and lake-effect snow storms are two types of winter storms that occur in the U. S. Choices: - tides - waves - typhoons - cyclones A:
Ans: cyclones

(Q).
Q: What is the name for tiny animals that feed on phytoplankton? Read this paragraph and choose the correct option from the provided answers: Plankton are tiny aquatic organisms that cannot move on their own. They live in the photic zone. They include phytoplankton and zooplankton. Phytoplankton are bacteria and algae that use sunlight to make food. Zooplankton are tiny animals that feed on phytoplankton. Choices: - larvae - krill - jellyfish - zooplankton A:
(A).
zooplankton

Ques:Q: What kind of reaction do you see when the concentration of reactants is higher? Read this paragraph and choose the correct option from the provided answers: Concentration is the number of particles of a substance in a given volume. When the concentration of reactants is higher, the reaction rate is faster. At higher concentrations, particles of reactants are crowded closer together, so they are more likely to collide and react. Did you ever see a sign like the one in the Figure below ? You might see it where someone is using a tank of pure oxygen for a breathing problem. Combustion, or burning, is a chemical reaction in which oxygen is a reactant. A greater concentration of oxygen in the air makes combustion more rapid if a fire starts burning. Choices: - regular reaction rate - slow reaction rate - constant reaction rate - faster reaction rate A:

Ans:faster reaction rate

Ques: Q: Through what part do exocrine glands discharge their contents? Read this paragraph and choose the correct option from the provided answers: Exocrine Glands Exocrine glands release their contents through a duct that leads to the epithelial surface. Mucous, sweat, saliva, and breast milk are all examples of secretions from exocrine glands. They are all discharged through tubular ducts. Secretions into the lumen of the gastrointestinal tract, technically outside of the body, are of the exocrine category. Choices: - follicles - capillaries - urethra - tubular ducts A:
Ans:
tubular ducts