Master Biology with Fun Quizzes & Brain Teasers!

which igneous rock has A vesicular rock cooled extrusive, non-crystalline, composed of mainly of scoria, low density. Can float?
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What is a gene?????????????????????????????
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Which layer of the wall in the GI tract is composed of either areolar or dense irregular connective tissue and contains nerves, blood vessels, and lymph vessels
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RNAi-based modification of amylopectin content in wheat occurs through decreased expression of starch-branching enzymes. If the siRNA used to knock down plant starch-branching enzymes was transmitted to humans, what enzyme might it affect, and why would this be harmful
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what human organ can regenerate up to half of itself if damaged?
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Can u guys help me with this bio question
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3. Which of the following is not an example of an ecological study? a. How tendons and ligaments enable movement in mammals. b. Population growth in fruit flies. C. The food web of the Serengeti. d. How foreign barnacles affect the health of local ecosystems.
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If a fox and an eagle eat some of the same organisms in an ecosystem, the relationship between the fox and the eagle could be classified as?
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Why is the presence of an integral protein necessary for a charged particle, such as an ion, to cross a cell membrane?
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Huntington's disease is caused by a dominant allele. If one of your parents has Huntington's disease, what is the probability that you, too, will have the disease
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Which hormone is the most important regulator of endometrium proliferation during the follicular phase
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some scientists believe that if __________ could be lengthened, age-related problems could be slowed.
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_________, ovulation, __________, and sexual response are regulated by female reproductive hormones.
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sister chromatids are best described as two dna molecules that have
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HELPPPP1. What are the primary organs of the urinary system?A. kidneysB. lungsC. blood vesselsD. hormone secreting glands2. Which structure in the nephron carries out the process of filtration?A. glomerulusB. collecting ductC. loop of HenleD. proximal convoluted tubule3. What is the name for the fluid that collects in Bowman's capsule?A. blood plasmaB. filtrateC. urineD. None of these choices are correct.4. Which part of the nephron carries out most of the reabsorption of nutrients into the blood?A. Bowman's capsuleB. distal convoluted tubuleC. loop of HenleD. proximal convoluted tubule5. Which type of pathogen is not made up of cells?A. animal pathogensB. bacteriaC. fungiD. protozoaE. viruses6. Which type of pathogen is made up of a single prokarytotic cell?A. animal pathogensB. bacteriaC. fungiD. protozoaE. viruses7. Which of these pathogens is made up of eukaryotic cells?A. animal pathogensB. fungiC. protozoaD. All of these choices are correct.8. What is the only type of pathogen that can be treated with antibiotics?A. animal pathogensB. bacteriaC. fungiD. protozoaE. viruses9. Which of the following is a part of the non-specific immunity?A. B lymphocytesB. plasma cellsC. skinD. T lymphocytes10. Which of these cells is responsible for antibody-mediated immunity?A. B lymphocyteB. Helper T lymphocyteC. Killer T lymphocyteD. macrophage
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Examine the Lucy (Australopithecus afarensis) skeleton. Describe at least two postcranial (below the head) traits that indicate that Australopithecus afarensis was adapted for bipedalism.
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if the frequency of the m allele in the human mn blood group system is 0.65 in a population at equilibrium, then the frequency of the n allele must be 0.04.
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Paleomagnetism is. Question 8 options: The equipment tied to boats to measure their depths The rock that solidifies from mid ocean ridges The evidence that fossils across continents matched The study of the magnetic qualities of ancient rocks.
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The Declaration ofIndependence claims that it is "self-evident" that all menare created equal. Is Douglass making the same argumentor a different one in his 1854 address?
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SOMEONE HELP ASAP NOW PLEASE, ILL GIVE BRAINLY NO BOTS PLS
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a scientist is studying a show wave from an earthquake, What kind of wave is being studied?
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how does the rate of secondary succession compare to primary succession
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process found in both photosynthesis and cellular respiration
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what is the name of the process that makes an rna copy of dna?
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