Biology

Which of these are the correct base pairs in DNA?A.adenine and guaninecytosine and thymineB.cytosine and guanineadenine and uracilC.adenine and thyminecytosine and guanineD.adenine and uracilthymine and cytosine
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Blood has traveled from the heart to the toes. Which describes the next stepof the circulation process?A. The blood goes back to the heart to get oxygen.B. The blood releases oxygen on the way back to the heart.C. The blood goes through the liver to get oxygen.D. The blood travels to the lungs to get oxygen.
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What challenges arise when trying to protect the environment? Select four options. A)expensive clean energy startup B)costs threat to the livelihood of many citizens. C) negative effect on future crop yieldsD)expensive to monitor fishing and tourism industries more land available for farming
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What is an anaerobic respirationAThe process sells used to release energy from glucose and oxygen is not availableBPhysical activity that increases heart And breathing ratesC The process cells used to release energy from glucose in the presence of oxygenD Physical activity that decreases heart and breathing rates
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Which of the following are features of nucleosomes? A nucleosome contains approximately 20 base pairs of DNA. The DNA in a nucleosome is wound around eight histone proteins. Between nucleosomes is a stretch of DNA called "linker DNA". A nucleosome contains 8 different types of histones. In a nucleosome, DNA is wrapped 4 times around the histone core. H1 seals off where DNA enters and leaves the nucleosome. Nucleosomes contribute to DNA packing. Nucleosomes in chromatin are arranged in straight, side-by-side chains. Nucleosomes are about 10000 Angstroms in diameter. Histones have tails that stick out and can be modified, affecting DNA expression.
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Some bacteria make people sick because they produce poisons called a. toxins b. antibiotics c. infections d. enzymes
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Contaminated water called leachate from _____ can pollute groundwater.Group of answer choicesA.solid waste incineratorsB.bioplasticsC.compost binsD.sanitary landfillsE.recycling centers
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What do tuberculosis, HIV, and malaria all have in common?Group of answer choicesA. They all can be spread through body fluids, such as bloodB. They all respond to antibiotics.C. They are all spread by parasites.D. They are all non-transmissible diseases.
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What two things make blood pressure? *A. pressure caused by contraction of heart ventricle and pressure exerted on blood bywalls of blood vesselsB. pressure caused by contraction of heart atrium and pressure exerted on blood by walls of blood vesselsC. pressure caused by stressful workload and pressure exerted by teachersD. pressure caused by contraction of heart ventricle and pressure due to gravity
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1. Water is the only substance that exists in nature as a solid, liquid, and gasat Earth's
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how bacterial species build antibiotic resistance.
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Giving Brainliest to first correct and logical answer.Explain why Calix having X chromosomes from his mother AND father meant chromosomal rearrangement was not the cause.
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Herbicides and insecticides can be bad for the environment. Insecticides could harm beneficial insects like bees, and both herbicides and insecticides can contaminate nearby rivers and streams.What are some of the possible environmental benefits of GM crops? What are some of the possible environmental problems that can be caused by GM crops? What are some of the potential risks to humans and animals that eat GM crops?
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Bobbi knows that water in a geyser is warmed by energy from deep within Earth. To investigate this process, she warms 2 L of water from 25 C to 100 C. Which property of the water will decrease?
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Which pairs are MOST closely related?A)dog and tapewormB)mushroom and treeC)amoeba and bacteriaD)tapeworm and bacteria
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true or false: the momentum is moving planets does not depend on their masses
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How do organims form carbon films
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Which of the following is the best definition of the term genotype?
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True or False: When carbon dioxide is released into the atmosphere fromburning fossil fuels, it makes the Earth colder.
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Which situation is an example of nonnative species introduction?A huge volcanic eruption in Washington destroyed many habitats.A large oil spill in the Gulf of Mexico killed many organisms that lived there.Horseshoe crabs in the waters of Virginia have been overfished, and their numbers have declined.Water hyacinths from Asia now grow in the United States and are crowding out animals and other plants.
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____ pathways include all the pathways that bring information ____and spinal cord ____ the effector muscles and glandsthe brainA. Efferent; to; fromB. Afferent; to; fromc. Efferent; from; toD. Afferent from; toE. None of the above
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Choose an organism to use as an example.Describe the organisms reproductive strategy:discuss how this strategy is an adaptation for this organism:
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Science has had no negative impacts on society.Please select the best answer from the choices providedOTOF
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A person exhibiting a recessive characteristic must be heterozygous for that gene. True or False
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