Q: Deserts are generally dry ecosystems having very little what? Read this paragraph and choose the correct option from the provided answers: frequent algal blooms d. little or no vegetation 12. Which of the following is an example of a weather event? a. The hurricane season lasts from June 1 through November 30. The amount of atmospheric CO2 has steadily increased during the last century. A windstorm blew down trees in the Boundary Waters Canoe Area in Minnesota on July 4, 1999. Deserts are generally dry ecosystems having very little rainfall. Which of the following natural forces is responsible for the release of carbon dioxide and other atmospheric gases? a. the Milankovitch cycles b. volcanoes c. solar intensity d. burning of fossil fuels. Choices: - heat - snowfall - mountains - rainfall A:
rainfall

Q: Plants not only contribute food but what else for organisms? Read this paragraph and choose the correct option from the provided answers: The oxygen atoms, however, form oxygen gas, which is a waste product of photosynthesis. The oxygen given off supplies most of the oxygen in our atmosphere. Before photosynthesis evolved, Earth's atmosphere lacked oxygen altogether, and this highly reactive gas was toxic to the many organisms living at the time. Something had to change! Most contemporary organisms rely on oxygen for efficient respiration. So plants don't just "restore" the air, they also had a major role in creating it!. Choices: - dioxide - hydrogen - carbon - oxygen A:
oxygen

Q: Q: What is the term for very large arrays of tandemly repeating, non-coding dna? Read this paragraph and choose the correct option from the provided answers: The majority of the human genome is non-coding sequence. These sequences include regulatory sequences, and DNA with unknown functions. These sequences include tandem repeat elements known as satellite DNA , and transposons. Satellite DNA consists of very large arrays of tandemly repeating, non-coding DNA. The repeating units can be just a single base (a mono nucleotide repeat), two bases (a dinucleotide repeat), three bases (a trinucleotide repeat) or a much larger repeating unit. Some repeating units are several thousand base pairs long, and the total size of a satellite DNA segment can be several megabases without interruption. Choices: - recombinant dna - models dna - addition dna - satellite dna A:
A: satellite dna

Question: Q: What is the name of a reactant in an enzymatic reaction? Read this paragraph and choose the correct option from the provided answers: Proteins Function as Enzymes If you were trying to type a paper, and every time you hit a key on your laptop there was a delay of six or seven minutes before you got a response, you would probably get a new laptop. In a similar way, without enzymes to catalyze chemical reactions, the human body would be nonfunctional. It functions only because enzymes function. Enzymatic reactionschemical reactions catalyzed by enzymesbegin when substrates bind to the enzyme. A substrate is a reactant in an enzymatic reaction. This occurs on regions of the enzyme known as active sites (Figure 2.27). Any given enzyme catalyzes just one type of chemical reaction. This characteristic, called specificity, is due to the fact that a substrate with a particular shape and electrical charge can bind only to an active site corresponding to that substrate. Choices: - membrane - Scar - tissues - substrate A:
Answer: substrate

*Question*
Q: What are the 3 types of tissues that modern plants have? Read this paragraph and choose the correct option from the provided answers: Modern plants have three different types of tissues. They are called dermal, ground, and vascular tissues. Each type of tissue has a different function. Choices: - cambrium, epidermis, and ground - sturdy , ground , and vascular - sinuous , ground , and vascular - dermal, ground, and vascular A:
**Answer**
dermal, ground, and vascular

*Question*
Q: What abbreviated form refers to oxidation-reduction reactions, which are part of respiration and photosynthesis? Read this paragraph and choose the correct option from the provided answers: In stoichiometry, quantities of reactants and/or products can be related to each other using the balanced chemical equation. The coefficients in a balanced chemical reaction are used to devise the proper ratios that relate the number of molecules of one substance to the number of molecules of another substance. Chemical reactions can be classified by type. Combination reactions (also called composition reactions) make a substance from other substances. Decomposition reactions break one substance down into multiple substances. Combustion reactions combine molecular oxygen with the atoms of another reactant. Oxidation reactions are reactions in which an atom loses an electron. Reduction reactions are reactions in which an atom gains an electron. These two processes always occur together, so they are collectively referred to as oxidationreduction (or redox) reactions. The species being oxidized it called the reducing agent, while the species being reduced is the oxidizing agent. Alternate definitions of oxidation and reduction focus on the gain or loss of oxygen atoms, or the loss or gain of hydrogen atoms. Redox reactions are easily balanced if the overall reaction is first separated into half reactions, which are individually balanced. Oxidation-reduction reactions are common in organic and biological chemistry. Respiration, the process by which we inhale and metabolize oxygen, is a series of redox reactions. In the absence of oxygen, redox reactions still occur in a process called anaerobic metabolism. Antioxidants such as ascorbic acid also play a part in the human diet, acting as reducing agents in various biochemical reactions. Photosynthesis, the process by which plants convert water and carbon dioxide to glucose, is also based on redox reactions. Choices: - oxid reactions - morph reactions - reflex reactions - redox reactions A:
**Answer**
redox reactions