Master Biology with Fun Quizzes & Brain Teasers!

The function (job) of the carbohydrate chains attached to the cell membrane is:a:assist in diffusion.b: assist in cell to cell identification (name tag of the cell).c: maintain membrane fluidity.
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ActivityDevelop a presentation (e. G. Role-playing, dramatization and other forms ofmultimedia) to show how an organism maintains homeostasis through the interactionof the various organ system in the body. Assesment1. Explain the plant and animals differences in their reproduction process. 2. Explain Homeostasis in plants and animals.
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recall the original source of energy for all ecosystems of organism on earth
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What types of questions would a researcher investigate using a computer model of the enzyme maltase
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(a) Identify ONE component of the sewage that is targeted for removal by primary treatment and ONE component of the sewage that is targeted for removal by secondary treatment. (b) For EACH of the pollutants that you identified in part (a), describe how the pollutant is removed in the treatment process. (c) Explain how sewage treatment plants create the solid waste problem that Dr. Goodwin mentioned in the article. (d) Two common methods of disposing of solid waste from sewage treatment plants are transporting it to a landfill or spreading it onto agricultural lands. Describe an environmental problem associated with EACH of these methods. (e) The final step in sewage treatment is disinfection. Identify ONE pollutant that is targeted during disinfection and identify ONE commonly used
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An endotoxin is ______. multiple choice indicative of viral infections indicative of gram-negative bacterial infection secreted by pathogenic organisms indicative of fungal infections secreted by gram-positive organisms
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In uvrabc repair, the excision step involves removing the damaged region (usually 12 nt). sometimes a general 5' to 3' exonuclease degrades the damaged region. what is the name of the uvrabc repair system protein that sometimes participates in excision by unwinding the damaged region first, before it is degraded by nuclease action?
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14 Elodea is a plant that grows in fresh water and is often found in aquariums, Threeelodea plants were placed inside inverted test tubes filled with water. One test tubewas exposed to low light, another to medium light while another was exposed tohigh light. The table provided shows the results of this experiment. Notice that moreoxygen was produced by the elodea in high light. Based on the information provided, what is the difference in volume (in ml) ofoxygen produced between the low light and high light plants at 45 minutes?Time (min)015304560Oxygen Production (mL)Elodea in Low Elodea in Medium Elodea in HighLightLightLight0000. 40. 80. 91. 21. 71. 81. 42. 02. 51. 82. 2. 3. 2. F 1. 4G 1. 1H0. 6J 0. 4
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Question 7 (2 points)phosphate)what does the following represent?nitrogenousbase5- carbonsugarnucleotidednanitrogen baserna
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I NEED HELP ASAP. What do scientific models predict will happen to earths ocean if current trends continue unmitigated? A. Sea level will rise between 2. 5 and 6. 5 FeetB. The acidity of ocean water will remain near a neutral pHC. Coral bleaching will stop, and coral reefs will slowly recover D. Polar ice will continue to melt and referees in a natural cycle
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Type a numeric value in each blank to complete the statement. The DNA making up each chromosome is tightly coiled up and contains genes coded to create specific proteins. All humans have _______ autosomes, plus __________ allosome chromosomes, which determine whether the chromosomes have come from a male or female
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Ostriches and Gazelles feed next to each other. They both watch for predators andalert each other to danger. Since the visual abilities of the two species are different,they can each identify threats the other animal would not as readily see. ParasitismCompetitionCommensalismMusic
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Achondroplasia, a form of dwarfism, is inherited as a dominantcondition (a). what is the probability of two heterozygous dwarfshaving normal height children?
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Some breeds of beef cattle have two color options, red and black, where the black version of the gene (B) is dominant over the red version (b). The different forms of the beef cattle color gene are called ___
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What could have caused the size of the moon jelly population to increase?Claim 1: A change to the size of the algae population caused the jelly population to increase. Claim 2: A change to the size of the walleye pollock population caused the jelly population to increase. 1-State your claim. You can support one or both claims. 2-Describe your evidence. 3-Make your argument as convincing as possible by making sure you explain how your evidence supports your claim or claims
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3. Certain mammals have large ears with a high density of blood vessels to releasebody heat. Which animal most likely needs this adaptation?CLE
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Salt water. 1. Properties of ocean water can be affected by various factors. Describe how each of the properties is affected by the factors
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If wxyz is a kite, find the measure of z. w=8x-23 x=46 and y=6x+11
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Which of these explains the change in energy of the rubber bands as they are relaxed when the student brings his hands closer together?A The amount of kinetic energy is decreased. B The amount of potential energy is increased. C Potential energy converts to kinetic energy. D Kinetic energy converts to potential energy
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Develop a cej (claim, evidence, justification) from the following question: field mice have an either tan, black or white back and are prey to hawks. if the mouse lives in a hay field (mainly tan), which mouse will have the best chance of living and passing on its genes based on our experiment today?
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Need help listing the sequence of events in translation from first to last. the possible options are listed in pics as well. please help !
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A scientist is studying fossils and comparing them to species that live today. In their studies, the bones of very different species were found to have very similar structure patterns. For instance, the flipper of a dolphin and a lizard's forelimb had much in common. What does the presence of these similarities indicate? Be sure to support your answer (claim) with evidence and reasoning/justification
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Many times people visit the doctor requesting antibiotics to treat colds and viral infections. How is the doctor justified in offering the patient treatment options that do not include antibiotics for these cases? If a doctor provides an antibiotic to treat colds and viruses, any bacteria in the patient's body will be killed, but a few will survive. Those few survivors may become resistant to antibiotics needed for real bacterial illnesses. Antibiotics can weaken the immune system when used for colds and viruses, whereas other medications de not so hard on the immune system during these types of illnesses. O Colds and viruses should be first treated with viral therapies and then when the body begins to recover, antibiotics can be used. Otherwise, the use of antibiotics is not effective at all. Side effects from antibiotics are severe when used for colds and viruses. Any use of antibiotics for colds and viruses will only make the patient more ill and ultimately make the patient's recovery time longer.
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Random mutations may occur that cause a change in the order of nitrogen bases in a codon. one type of mutation involves the substitution of one of the nitrogen bases in a codon. explain the effect of asubstitution of one of the bases in a codon.
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