Master Biology with Fun Quizzes & Brain Teasers!

17) Which is NOT the correct description about the cells?a) Eukaryotes contain membrane-bound nucleus and other membrane-bound organelles.b) Prokaryotes do not contain membrane-bound nucleus, but contain membrane-bound organelles.c) Amoeba belongs to protists, which is a large group of eukaryotic organisms.d) Paramecium is a single-celled organism.e) The largest prokaryotes are cyanobacteria, also called blue-green algae.
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Which organisms are the producers in a hydrothermal vent community?What process do these organisms undergo to produce glucose?
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hummingbirds get nectar from flowers, and they also distribute the pollen from the followers and help them to reproduce. this would be an example of
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Choose the best answer.A hard, tubular, modified scale attach to the body that enables birds to fly and provides insulation is a _________.featherbeaksscalescartilagefins
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QUESTION 15Sickle-cell disease results in malformed hemoglobin molecules. Which cell type contains millions of hemoglobin molecules per cell?NeuronsRed blood cellsWhite blood cellsOsteoblasts
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The cells in your body must constantly move substances from the cell against the concentration gradien. Look at the images below. Which type of active transport does this represent? Explain your answer.
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Many farmers and gardeners compost their plant and animal waste. The living material naturally decays in compost bins, forming a dirt-like substance thats rich in nutrients. The next season, farmers use this substance as a natural fertilizer for their crops. A biology student has grown tomato plants for several years. Until now, he used an artificial fertilizer formulated for tomato plants. This fertilizer caused his plants to grow faster and taller than they grew in unfertilized soil. The student wants to know whether using natural compost will cause his tomato plants to grow faster and taller than his artificial fertilizer. Answer the following questions to plan an investigation using the steps of the scientific method and help the student find the answer to his question.Part B- what is the students scientific question?Part C- What are 2 possible hypothesis for the students experiment?Part D- Choose 1 hypothesis and make a prediction Part E- how did you conduct your investigation explain your dependent and independent variables Part F- How does the design of your experiment control the outside factors that may affect the results?
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the name of Abraham father in the bible
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True or false? Intel and fossil evidence indicate that Africa and Brazil were once joined
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Select all the advantages that seeds have over spores:A. Seeds have increased drought resistance.B. Long term dormancy is possible.C. Sexual reproduction is only possible with seeds.D. Nutrition is packaged with the embryo.E. Widespread dispersal is possible with a seed coat.
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Where in your body is CO produced?
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Which process produces oxygen that is released into the atmosphere? *a. Respirationb. Excretionc. locomotiond. photosynthesisi don't know, I rather not guess
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Which of the following is not used by scientists to obtain information?
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Can you define both of the following terms? (Could you condense them into 2 sentences length for each?)Conjugate baseHydrogen Ion
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The number of introduced species in the United States has increased dramatically since 1950. Which of the following factors has most strongly led to this increase?
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Did birds retain any features from their theropod ancestors?
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I need help on answering 2 and 3
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In a food web, Is a northern cardinal a secondary consumer?
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The majority of a cell's interior is madeup of...O mitochondriaO cytoplasmOnuclei (that's plural for nucleus)Oribosomes
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6. What cell type are protists?a. Fungib. ProkaryotesC. Eukaryotesd. Bacteria
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A recessive, sex-linked trait in humans is the result of a gene located on the X chromosome. If a man with the trait has children with a woman who neither expresses nor carries the trait, how will the children be affected? a) all of their daughters and none of their sons will express the traitb) half of their daughters and all of their sons will express the traitc) half of their sons will express the trait, but none of their daughters willd) none of their children will express the trait, but their daughters will be carriers
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What do lysosomes and Golgi Bodies have in common?Group of answer choicesThey break down food and release energy.They are examples of cell organelles.They control how much oxygen enters a cell.They are twin "command centers" of the cell.
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These cells increase in number in response to a parasitic invasion.A) natural killer cellsB) basophilsC) T cellsD) eosinophils
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What is an advantage of viewing living cells?
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