Biology

33. How is the speed of light affected as light passes at an angle from air to water?It remains constant.It speeds up.It passes through unchanged.It slows down.
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The sun's motion across the sky is caused by _____.
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Women with an inadequate weight gain during pregnancy are at higher risk of giving birth to an infant with what?
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When a species is moved from its native area to a new area, it can become an invasive species and damage its new ecosystem. What is one reason these species are able to do damage to an ecosystem? a. When moved to the new location, the species fills in unoccupied niches.b. Having been moved from its home country, the introduced species does not know the local language so is unable to communicate with its new neighbors and gets angry, lashing out at any nearby organisms and doing great harm.c. When a species is transported, it leaves behind its predators and the diseases that previously kept its population in check. Therefore the species is able to grow to large and damaging numbers.d. In nearly every case, when a species is moved across an ocean and into a new habitat it becomes a harmful invasive species simply because it is in a new habitat.
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Redundancy occurs when ___________specify one __________. Wobble pairing explains how it's possible for one_______ to read more than one codon. Wobble pairing allows a redundant code to be read by a small number of_________
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These figures show the four levels of protein structure: primary, secondary, tertiary, and quaternary structure. Which level of protein structure is characteristic of some, but not all, proteins?1. Secondary level of protein structure2. Tertiary level of protein structure3. Quaternary level of protein structure
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Zane, a 26-year-old male, came upon a car accident and immediately started to help the victims, who were pinned in their car. There was blood all over the scene and Zane acted without having any personal protective equipment. While helping the victims, he cut his arms in several places on the sharp metal and shards of glass. A few weeks later, he developed flu-like symptoms that persisted for several days. He went to his clinic and tested negative for influenza. Because of his recent exposure, Zanes doctor was suspicious of blood borne pathogens. Which of the following disorders are blood-borne diseases?a. HIV infection b. Hepatitis c. Cirrhosis d. Leukemia
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a branch of study or knowledgeabout the physical and material worldwhich is conducted through investigationand observation
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A biologist observes that a particular plant species is found in a forest but not in a nearby meadow. She hypothesizes that the plants could grow in the meadow but are not found there because their seeds have yet to land in the meadow. Which of the following would be the most appropriate way to scientifically evaluate this hypothesis? 1. constructing a logical argument about why her hypothesis must be true 2. measuring how far the seeds typically travel from their parent plant 3. scattering seeds in several areas of the meadow and observing whether they start to grow 4. observing how long it takes the seeds to eventually reach the meadow
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"Pancreatic juices aid digestion and absorption by"__________. a. working against homeostasis b. releasing bicarbonate to neutralize gastric acidity c. secreting salivary enzymes d. producing bile e. secreting cholecystokinin
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A _____ reinforcer is any reward that satisfies a basic, biological need, such a hunger, thirst, or touch.
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_______________ refers to people's ideas about their own and others' mental states; that is, how feelings, perceptions, or thoughts might predict behavior.
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Meiosis results in independent assortment of maternal and paternal chromosomes. If 2n = 6 for a given organism and there is no crossing over, what is the chance that a gamete produced by this diploid organism will receive only paternal chromosomes?
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Mitochondria and chloroplasts are thought to have evolved from free-living aerobic bacteria that were engulfed by an ancestral anaerobic cell and established a mutually beneficial (symbiotic) relationship with it. Which of the following statements is NOT true about these organelles? a. They are similar in size to small bacteria.b. They have their own circular genomic DNA.c. They have their own ribosomes.d. They have their own transfer RNAS.e. They are found in all eukaryotes.
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What are the 5 steps in the immune system
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Which of the following is not true?a. oxygen 16 evaporates more readily from the ocean than oxygen 18b. oxygen 16 and oxygen 18 are found in roughly equal amounts in ocean waterc. the nucleus of oxygen 18 contains two more neutrons than the nucleus of oxygen 16d. both oxygen 16 and oxygen 18 are found in the shells of marine organisms
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what prevents blood movement from left ventricle to left atrium
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Using the cowpox virus to create a virus for smallpox
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Lactose, a sugar in milk, is composed of one glucose molecule joined by a glycosidic linkage to one galactose molecule. How is lactose classified?
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Bacteria and fungi are important to humans because they: A. help control weeds. B. pollinate crop plants. C. provide shelter. D. deplete nutrient minerals in the soil. E. provide foods and antibiotics.
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NEED HELP ASAP!!!!!!!!!!!!!!!!!!!!!!!!!!!!A tropical storm is an example of what two spheres of the earth interacting?atmosphere and hydrospheregeosphere and cryospherebiosphere and atmospherecryosphere and atmosphere
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Why are fixed pieces of equipment, such as bouncy seats, high chairs, and playpens, detrimental to an infant's development?
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Which term best describes the work done by a community in which peoplemostly raise animals for meat, milk, and clothing?OA. FarmingOB. DomestigatingHunting and gatheringOD. Manufacturing
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This term means: To expose a subject to an infectious agent (such as a virus). It is oftendone to prevent the subject from getting a disease, in which case it is synonymous with theterm 'vaccinate'.
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