Answer the following question given this paragraph: Benzoic acid crystals in polarized light are pictured above. Benzoic acid is widely used as a food preservative, either as the carboxylic acid or as the sodium benzoate salt. This compound is most effective when added to acidic foods such as fruit juices and soft drinks. The major industrial source of benzoic acid is the partial oxidation of toluene with oxygen. The process is inexpensive and environmentally benign. Q: What type of acid is often used as a preservative for acidic foods such as fruit juices? Choices: - hydrochloric acid - sulfuric acid - citric acid - benzoic acid A:
benzoic acid
Answer the following question given this paragraph: 6O 2 + C 6 H 12 O 6 6CO 2 + 6H 2 O Photosynthesis produces oxygen as a byproduct, and respiration produces carbon dioxide as a byproduct. In nature, there is no such thing as waste. Every single atom of matter is conserved, recycling indefinitely. Substances change form or move from one type of molecule to another, but never disappear (Figure 5.18). CO2 is no more a form of waste produced by respiration than oxygen is a waste product of photosynthesis. Both are byproducts of reactions that move on to other reactions. Photosynthesis absorbs energy to build carbohydrates in chloroplasts, and aerobic cellular respiration releases energy by using oxygen to break down carbohydrates. Both organelles use electron transport chains to generate the energy necessary to drive other reactions. Photosynthesis and cellular respiration function in a biological cycle, allowing organisms to access life-sustaining energy that originates millions of miles away in a star. Q: Photosynthesis produces oxygen as a byproduct, and respiration produces what as a byproduct? Choices: - carbon monoxide - nitrogen - ozone - carbon dioxide A:
carbon dioxide
Q: Answer the following question given this paragraph: In birds, 90% to 95% of species are monogamous , meaning the male and female remain together for breeding for a few years or until one mate dies. Birds of all types, from parrots to eagles and falcons, are monogamous. Usually, the parents take turns incubating the eggs. Birds usually incubate their eggs after the last one has been laid. In polygamous species, where there is more than one mate, one parent does all of the incubating. The wild turkey is an example of a polygamous bird. Q: Most bird species display this behavior, meaning the male and female remain together for breeding for a few years or until one mate dies? Choices: - dichotomy - polygamy - isolation - monogamy A:
A: monogamy
Question: Answer the following question given this paragraph: Heat is the transfer of thermal energy between substances. Thermal energy is the kinetic energy of moving particles of matter, measured by their temperature. Thermal energy always moves from matter with greater thermal energy to matter with less thermal energy, so it moves from warmer to cooler substances. You can see this in the Figure below . Faster-moving particles of the warmer substance bump into and transfer some of their energy to slower-moving particles of the cooler substance. Thermal energy is transferred in this way until both substances have the same thermal energy and temperature. For a visual introduction to these concepts, watch the animation "Temperature vs. Heat" at this URL:. Q: Kinetic energy of moving particles of matter, measured by their temperatures are known as: Choices: - visible energy - atmospheric energy - solar energy - thermal energy A:
Answer: thermal energy
*Question*
Answer the following question given this paragraph: Population density is the average number of individuals per unit of area or volume. Q: The average number of individuals per unit of area or volume is referred to as a population's what? Choices: - increase - diameter - output - density A:
**Answer**
density
Q: Answer the following question given this paragraph: The place where the axon of one neuron meets the dendrite of another is called a synapse . Synapses are also found between neurons and other types of cells, such as muscle cells. The axon of the sending neuron does not actually touch the dendrite of the receiving neuron. There is a tiny gap between them, the synaptic cleft ( Figure below ). Q: What is the place called where the axon of one neuron meets the dendrite of another? Choices: - uptake - neurotransmitter - apoptosis - synapse A:
A: synapse