Free Biology Practice Questions - Improve Your Skills

Support an argument that the gravitational force exerted by Earth on objects is directed down.
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Which type of inheritance is described here?A mutation in one gene results in heart problems, blurred vision and the inability to digest milk.lethal allelespleiotropysex-influenced traitspolygenic traits--------------------Which type of inheritance is described here?A gene on chromosome 2 in mice can cause males to lose their hair earlier than females.pleiotropylethal allelespolygenic traitssex-influenced traits
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Which best describes the reactants and products of photosynthesis?Reactants are formed inside the plant, and products are taken in from the environment by the plant.O Reactants are taken in from the environment by the plant, and products are formed inside the plant.O Reactants and products are formed inside the plant.O Reactants and products are taken in from the environment by the plant.Mark this and returnSave and FyitNov
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The belief that leadership qualities can be developed within the individual Marine, and that leaders have the responsibility for developing those qualities is the ________.
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For each of the following statements, indicate if it is true of the rough ER only, of the smooth ER only, of both rough and smooth ER, or of neither. Sort each statement into the appropriate bin. ResetHelp Is involved in the breakdown of glycogenIs the site for biosynthesis of secretory proteins.Contains less cholesterol than does the plasma membrane.Has ribosomes attached to its outer (cytosolic) surface.Usually consists of flattened sacs.Tends to form tubular structures.Is involved in the detoxification of drugs.Is the site for the folding of membrane-bound proteins.Visible only by electron microscopy.
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I have type "A" blood. Which of these can I NOT get blood from? (check all that apply)A) BB) AC) AB
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All of the following apply to estuaries EXCEPT: There provide very valuable breeding grounds for commercially important fish and shellfish. There is no salinity in estuarine ecosystems due to large supply of fresh water from a river. Plants and algae that grow here have high tolerance for changing environmental conditions like salinity and light penetration. These coastal ecosystems provide a barrier against the ocean during storms.
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Extra credit. An emerging strain of the fungus Candida (C. auris) is able to cause serious infections in humans because it overexpresses a heat shock (chaperone) protein. Most Candida species do not grow well at body temperature and don't cause serious disease. Can you think of some ways that the overexpression of this heat shock protein allows this fungus to cause deadly infections
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A rock is worn and cracked from sediments carried by the wind,animal actions, acid rain, and ice wedging. Which of the following isan example of chemical weathering?A. sediments carried by the windB. animal actionsC. acid rainD. ice wedging
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I need an answer pls and this is biology, right?
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I need help ASAP! You get 20 points and I will vote you brainiest!
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Name 3 bee popper traits that represent complete dominanceWHO CAN HELP MEE
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The airplane returns to st louis by the same route. Because the prevailing winds push the airplane along, the return trip takes only 3.75 hours. What is the average speed for this trip answers 21-25
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Lipids are important for many cellular functions in our bodies. Like many nutrients, lipids are transported around our bodies via the bloodstream. Unlike many nutrients, lipids require specialized structures called lipoproteins to remain soluble in blood until delivered to target cells. Based on the composition of blood, predict the properties of the outer surface and interior of a lipoprotein that would enable lipid transport through the bloodstream. Select only ONE answer choice.
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Describe the environmental conditions that extremophiles are able to live in. Describe the environmental conditions that extremophiles are able to live in. Extremophiles were microbes that could only live in conditions that prevailed early in Earth's history when environments had high temperatures and pressure and lacked oxygen. Extremophiles includes those microbes that thrive in very high-salt, high-temperatures, low-temperature, high-pressure, low-pH, or high-pH harsh conditions. Extremophiles can only survive in habitats where there are extreme changes in close proximity, such as hydrothermal vents at the bottom of the ocean, where water as hot as 300C emerges and mixes with 4C seawater. Extremophiles are able to tolerate extreme conditions found in space such as a near vacuum and temperatures in excess of 300C or several hundred degrees below 0C.
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Is decay of dead plant material a biotic factor or an abiotic factor? 10 points reward for anyone who answers!
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A small group of travelers is meeting inside an ancient building, and the travelers need access to the Internet using their mobile devices. However, the group is in an area where Wi-Fi Internet is not available and cellular coverage is intermittent. One of the travelers has an unlimited cellular data plan and a strong consistent signal.
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why did the population of rat stop growing in the logistical growth model?
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The image shows a plant cell containing chloroplasts.nucleusribosomemitochondrionGolgi complexcell wallcellmembrane-chloroplastvacuoleWhat is the main function of chloroplasts in a plant cell?Choose the correct answer.They produce proteins and carbon dioxide.They store water, oxygen, and carbon dioxide.They transform light, water, and carbon dioxide into sugar and oxygen.They protect cells from chemicals found in the surrounding environment.Save and exit
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Which of the following is not considered an environmental impact of geothermal energy? A) gas emissions B) disturbance of the land at drilling sites C) requires large-scale transportation of raw materials to refining sites D) hot waters are corrosive
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What is the estimated carrying capacity of the logistical growth model?
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why do you think slate might be denser then shale?
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The increase in volume of a material when particle motion increases is known as
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A student wants to know the effect a mutation might have on a species survival. The change causes a rabbit to have mottled (spotted) brown fur. The student runs a computer simulation for ten generations. What possible conclusions can you draw? Choose ALL that apply.Question 2 options:Evolution occurred because the allele frequency changed over time.Evolution is not occurring, mutation just introduced a new trait in the gene pool.The rabbits with mottled brown fur have a selective advantage that gives them more camouflage from predators.The mottled brown fur mutation is neutral because the other fur color traits still appear in the rabbit population.The mutation had a positive effect, allowing those rabbits with the mottled brown fur to survive and reproduce better than those with the brown or white fur.
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