Biology

Hormones are proteins uses as-chemical receptors-chemical messengers-sugar
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The largest population an environment can support is itsA. symbiosis.B.carrying capacity.C.population.D.limiting factor
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Which word best describes the energy of the boiling water
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The worm population will . . .
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The following diagram shows the branching tree diagram for some animals.(Image below)Which two organisms share the greatest number of derived characteristics? Frog and kangaroo Kangaroo and chimpanzee Lion and chimpanzee Shark and chimpanzeePlease answer asap!
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Photosynthesis is: A. A system of living things and their environment. B. The area where something lives.C. The process by which green plants and some other organisms use sunlight to synthesize food from carbon dioxide and water.
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THIS IS DUE TODAY!!! if someone knows how to do this please help!!
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Determine whether each statement correctly describes the myocardial action potential and the pacemaker potential. 1. Because the pacemaker potential occurs during systole, it can also be called systolic potential. (Click to select) 2. The pacemaker potential is the relatively slow, spontaneous depolarization in the SA node. (Click to select) 3. Myocardial cells produce their own action potentials after being stimulated by action potentials originating in the SA node. (Click to select) 4. Myocardial action potentials are characterized by a spike and then slow depolarization. (Click to select)
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PLEASE HELP ASAPWhen environmental conditions change, selection can cause a change in the distribution of phenotypes of that species. Which of the following trends would provide evidence of disruptive selection in response to environmental change? A shift in a population's frequency curve from an intermediate phenotype to an extreme phenotype A shift toward equal distribution of all phenotype frequencies, including intermediate and extreme phenotypes An increase in the frequency of extreme phenotypes and a decrease in the frequency of intermediate phenotypes An increase in the frequency of intermediate phenotypes and a decrease in the frequency of extreme phenotypes
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The table below contains information for five animals.Class: ___________ Which animal is the least related to the others? A. AardwolfB. Grey WolfC. LionD. Blue Whale
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What is the energy source for producers, consumers, and decomposers?
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Match the vocabulary word to the correct definition.Column A1.This can release and store energy by breaking and re-forming the bonds between its phosphate groups: This can release and store energy by breaking and re-forming the bonds between its phosphate groups2.The fluid portion of the chloroplast outside of the thylakoids is known as this: The fluid portion of the chloroplast outside of the thylakoids is known as this3.The thylakoid contains this protein complex that spans the membrane and allows H+ ions to pass through it: The thylakoid contains this protein complex that spans the membrane and allows H+ ions to pass through it4.this compound has two phosphate groups, adenine, and a 5 carbon sugar called ribose: this compound has two phosphate groups, adenine, and a 5 carbon sugar called riboseColumn Ba. ATP synthaseb. ADPc. stromad. ATP
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Cytochalasin is a drug that caps actin filament plus ends, thus preventing actin polymerization. Phalloidin is a drug that binds to and stabilizes actin filaments, preventing actin depolymerization. Even though these drugs have opposite effects on actin polymerization, the addition of either of these drugs instantaneously freezes the cell movements that depends on actin filaments. Explain why drugs that have opposite effects on actin filaments can have a similar effect on cell movements.
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How does the body plan and anatomy enable the chordate to perform essential functions it needs to survive?
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What is a cell? Why is it called the basic unit of life?
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What part of the plant does the flower attached to
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Haploid cells have _____ and diploid cells have _____ of its DNA.A.two copies, one copyB.one copy, two copiesC.two copies, four copiesD.one copy, four copies
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The probability of the parents having a child with hairy knuckles is...
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Select the best answer for the question19. What are two United Nations Sustainable Development Goals?A Wealthier economy and zero hungerB. Less traffic and more solar powerC. Smaller population and less pollutionD. Affordable and Clean Energy and Responsible Consumption and Production
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how have humans changed the carbon cycle
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Which scientist proposed that if an organism used a structure so much that it grew, the trait of that larger structure could be passed to its offspring?O Eramus DarwinO Jean-Baptiste LamarckO Georges de BuffonO Charles Lyell
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Where do maple trees get their energy and Matter at the beginning of spring
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Worms that had been invaded by bacteria were eaten by birds. Many ofthese birds died. The most likely explanation for this is that the:a. Bacteria interfered withnormal life of the birdsb. Disease that killed the birdswas inheritedc. Gene alterations in thebacterial cells killed the birdsd. Birds produced antibodies in response to the bacteria
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2. List the abiotic factors you canidentify in the meerkat's habitatbelow.
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