Master Biology with Fun Quizzes & Brain Teasers!

Did you notice any trends between temperature and weather conditions in mark's data? were certain types of weather associated with higher or lower temperatures?
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At the superior end of the esophagus, the superior esophageal sphincter is a thickened ring of ______ muscle marking the area where the esophagus and the pharynx meet. Multiple choice question. Circular smooth longitudinal smooth longitudinal skeletal circular skeletal need help
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1) Animals exhibit many adaptations to promote survival Some arephysical adaptations; others are behavioral. Compare the two bearsyou see here. The polar bear is adapted to the cold, snowy climate ofthe tundra. Their coloring is protective; their black skin andtranslucent fur help them to stay warm. Take a look at the other bear. This bear hibernates during the cold, snowy winter. Elaborate on howand why the bear hibernates. All BUT ONE answer explains thisbehavior. wA)During the winter, there are limited food resourcesfor the bear. B)During hibernation animals go into a deep sleep toconserve energy. C)The bear is not white and would stand out in thesnow, an easy target for hunters. D)The bears eat a lot before hibernation and then liveoff of the stored fat while they are asleep. 2) Bears are solitary animals. They live alone because there are notB)
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A particular maize plant with a mutation in the allele encoding the large subunit of rubisco is crossed with a plant that contains the normal allele. explain how examination of the offspring will enable a researcher to determine whether the mutant plant contributed the ovule or the pollen to the cross.\
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In order to have rh negative bl00d one must be h0m0zygous recessive. about one-sixth (1/6) of the u.s. population is rh negative, and the other five-sixths (5/6) are rh positive.
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You are a science student completing an outline to guide you in conducting an experiment. You create a main topiccalled Equipment. You create subtopics for this main topic named Bottles, Scale, and Safety Glasses. Which outline stepare you performing?labelingorderingO brainstormingo organizing
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The eye is immensely complex. How can ""mindless"" evolution lead to something so complicated?
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Qusetion 1. the different traits within a population are caused by option for answer 1. genetic variety, 2. natural selection, 3. pollution. due to these differences the best traits in the population for survival will show up more frequently due to 1. genetic variety, 2. natural selection, 3. pollution. question 2. in a new environment, traits for successful survival and reproduction become more common and traits that do not support survival become less common. 1. true2. false
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Explain the relationship between the dewdrop spider and the nephila spider
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TEKS 7. 10A6. Many plants of the tropical rain forest are successful houseplants. What characteristics makethese plants successful indoors?PLEASE HELP
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If you sprinkle sugar on a bowl of strawberries, the juice comes out of them. Does this explain a hypotonic, hypertonic or isotonic solution? How does this compare to a red blood cell placed in pure water and a red blood cell placed within plasma? Explain your answer thoroughly and be sure to define the three osmotic terms within your answer
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How is the atp produced in cellular respiration like earning a return on an investment?
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Mr. Jones's water supply comes from a well on his property. An underground mine is about to begin operations next door. what two main concerns should mr. Jones have about his water supply?(please answer correctly its due soon 40 points )
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Which of these groups of fruits are drupes? Pineapples, mulberries, and figs Oranges, lemons, and limes Plums, apricots, and coconuts Strawberries, blackberries, and raspberries Apples, pears, and quinces
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organisms show slowed growth during the:springsummerautumnwinter
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In the following food chain what amount of energy does the snake have if the seed starts with 29345 kcal of energy?Seedmousesnake hawk. Remember the further away from the plant (autotroph) the less energy you have. Bacteria feed on anything that dies. I need the answer asap
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An organism's niche is its? a. ideal climateb. source of food c. role in food chain d. maximum population
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Identify the structure of the human heart which is valve between the left atrium and left ventricle of the heart, consisting of two triangular flaps of tissue that prevents blood from flowing back into the atrium. Also, called the bicuspid valve. (check out the hint) A)mitral valve B)aortic valve C)tricuspid valve D)pulmonary valve
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A group of which level of classification that is closely related will composed a genus?O kingdomsspeciesophylaO orders
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A female with turners syndrome usually inherits only one x chromosome. in males, nondisjunction may cause klinefelters (kline-feltr) syndrome, resulting from the inheritance of an extra x chromosome, which interferes with meiosis and usually prevents these individuals from reproducing. there have been no reported instances of babies being born without an x chromosome.what does this fact indicate about the x chromosome?
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Why does a heart chamber (lumen) get smaller and force the blood out through a valve when cardiac muscle is stimulated to shorten
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Use the image on the right to answer the following questions. The blue is the water, the red is the solute.Compared to the inside of the cell, the outside of the cell is .
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Improvements in harvesting systems include all of the following advances EXCEPTtrees are now cut closer to the ground. trees are lifted by machine instead of manually. trees can be transported using much smaller equipment. trees grow at faster rates than they did in previous decades
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A delivery driver nearly got into a car accident. After the incident, his heart starting to race and the driver also felt a rush of adrenaline. What systems interact with each other to cause this rush of adrenaline?
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