Master Biology with Fun Quizzes & Brain Teasers!

Explain how the following work together to give a pigeon a crest using the following words: 'crest', alleles, protein. (For a bonus include: nucleotide and amino acid sequence)Please try to do the bonus if you can!
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The yeast cell Saccharomyces cerevisiae is moved from an environment containing oxygen to an entirely oxygen-free environment. What type of metabolic changes/ reactions will occur in the yeast cell? Describe your answer within two to three sentences
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1. describe how radio telescopes are used to explore space. 2. how are radio waves used on earth?3. why do radio telescopes convert radio waves (analog signals) to electrical (digital) signals for analysis? (hint: what did the article say about the advantages of digital signals?)sidenote: sorry if this is in wrong category, there wasn't one for general science
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11.7 state one common characteristics that binds the digestive juice in the liver and pancreas?
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In three to five sentences, explain how the fossil record provides evidence for the idea of natural selection.please help. my mother dint want me to learn about human evouloution and i need help for answerss on the test
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Studying the differences between fossils and modernorganisms helps scientists better understand the-evolution of organisms over timeprimary function of key macromoleculesrole of mutation in life functionsadaptation of organisms through acquired traits
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Review the question and three claims, and then choose the one claim you think is least convincing.christchurchs air temperature is cooler than usual during el nio years because . . .claim 1: the amount of incoming energy from the sun changes.claim 1: the amount of incoming energy from the sun changes.claim 2: something about earths surface (land or water) changes.claim 3: something about the air changes.
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Word bank is oxygen, sunlight (energy), atp(energy), carbon dioxide, glucose, water
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Before receiving FDA approval, the tTAV protein had to be tested for any potential toxicities to other native animals. Why would this be part of the approval
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Based on the endosymbiotic theory, which explanation is supported by evidence for how eukaryotes evolved?*Engulfed means to eatQuestion options:A: Prokaryotic organisms engulfed* a virus and developed a symbiotic relationship which led to the evolution of organelles such as mitochondria and chloroplasts. B: Organelles engulfed* a prokaryote and developed a symbiotic relationship which led to the evolution of organelles such as mitochondria and chloroplasts. C: Prokaryotic organisms engulfed* a eukaryote and developed a symbiotic relationship which led to the evolution of organelles such as mitochondria and chloroplasts. D: Prokaryotic organisms engulfed* another prokaryote and developed a symbiotic relationship which led to the evolution of organelles such as mitochondria and chloroplasts
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PLEASEEE HELPP!!!! individuals can be identified by __ and species
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Using clues from index fossils and chronological layering to determine the age of an unknown rock is known as dating?A:specimenB:sedimentaryC:relative
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Which of the following shows that Secretary of State Kerry is determined to end the fighting?
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What five factors cause people to evaluate risk irrationally?
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A population of squirrels in a remote forest may be gray (dominant) or brown (the recessive phenotype). Gray squirrels have the genotype GG or Gg. Brown squirrels have the genotype gg. The frequency of the GG genotype is 0. 30. What is the frequency of heterozygous squirrels?What is the frequency of the G allele?What is the frequency of the g allele?
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The cranial nerve responsible for movement of the medial rectus, superior rectus, inferior rectus and inferior oblique eye muscles is the ________ nerve. group of answer choices hypoglossal
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Tell me in 4-5 sentences: Where does the hydrogen that's in a carrot that I just ate come from, what does it help produce after I eat it, and what are the steps along the way? (need answer asap !)
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Total energy consumption per capita in north carolina is in the lowest 10 of all states in the nation. the state has a strong ____________ base and is a leading producer of ____________, poultry, and _________________.
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In the year 2500, five male space colonists and five female space colonists (all unrelated to each other) settle on anuninhabited Earthlike planet in the Andromeda galaxy. The colonists and their offspring randomly mate for generations. Allten of the original colonists had free earlobes, and two were heterozygous for that trait. The allele for free earlobes isdominant to the allele for attached earlobes. Which of these is closest to the allele frequency in the founding population?A) 0. 4 a, 0. 6 AB) 0. 5 a, 0. 5 AC) 0. 2 a, 0. 8 AD) 0. 8 a, 0. 2 AE) 0. 1 a, 0. 9 A(please explain)
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Need help by 04/18/2021 Part E: Write Your PaperWrite your research using your outline and the research youve collected. Be sure to proofread and revise your writing to catch any errors in grammar, spelling, logic, or cohesion. Remember that you must add a works cited page at the end of your paper to give credit to your sources. When you have completed your paper, submit it to your teacher along with this activity
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John raises goldfish as a pet dealer. He has over 10,000 fish in one large tank but, due to an electrical problem, 95 percent of the fish perish one night. The remaining 5 percent are left to breed and repopulate, passing their genes and traits on to future generations. What type of genetic drift would this be considered?
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Maintenance of normal extracellular fluid volume depends largely on the extracellular concentration of ________ ions.
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I need help with filling in the boxesJust put how each limiting factor can impact the native population Dont send the link that just hacks you :/ someone please answer!!!
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What statement is best supported by the survivorship curves?A. American robins have a high survival rate for most of their lifespan and then decline rapidly in old age. B. American robins have similar death rates throughout their lifespan, while the death rate of common green darners changes over their lifespan. C. A very high proportion of common green darners reach adulthood and live to older ages. D. Younger American robins have higher death rates than older American robins, while younger and older common green
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