Master Biology with Fun Quizzes & Brain Teasers!

Where can you find most of Earth's freshwater?A. On Earths surfaceB. In the atmosphereC. under the groundD. In the cryosphere
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Wolves have thick fur coats that insulate their bodies during cold weather. Whenthe weather changes and temperatures get hot, wolves can _______ to cooldown.Question 2 options:store fatshedshivereat
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How is the process of gene regulation (=regulation of gene expression) related to the process of cell differentiation?
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aa.29. SC.912.L.16.2When is a recessive allele expressed in offspring?when two copies are presentb. when parents have no dominant alleleswhen the offspring is heterozygousd. when one copy is presentc.
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what is the role of digestive system
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according to the metros law of independent assortment, what are the allele combinations expected in each of the sperm cells and what combination are expected in each of the eggs produced by these cells during meiosis?
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What is the standard ratio of phenotypes associated with a dihybrid cross?A. 1:2:2:1B. 1:2:1C. 3:1D. 9:3:3:1
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A scientist has discovered a new type of animal in the tundra area near the north pole. Write a paragraph describing the type of evidence the scientist might use to classify the animal by its evolutionary history. Use the terms in the box in your paragraph. Underline each term in your answer.DNA, common ancestor, physical evidence, fossil.
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Explain how the body uses negative feedback to regulate body temperature. Use the terms control center, stimulus, setpoint, receptors, effectors, and imbalance in your response.
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Select the correct answer from each drop-down menu.Blake is writing an article on Cnidarians. Help her complete the sentences.All Cnidarians are ( Choose from drop box)symmetrical and live in marine habitats. Cnidarians have a common opening used for feeding as well as expelling waste. They absorb oxygen from the water through the means of (Choose from drop box).1. radially or bilaterally or spherically2. diffusion or respiration or inhalation.
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Which of the following causes the bridge to be broken during muscle contraction?Question options:A) Myosin depolarizingB) ATP binding to myosinC) Actin pulling away from myosinD) ATP binding to actin
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What is FEV? Describe a way that a doctor could take a measurement of FEV
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Which piece of evidence explains that open defecation is a major contributor in contaminating water?Question 1 options:Moreover, pollution from open defecation is further complicated by contamination from natural disasters such as constant floods.In a disturbing study, 75 percent of drinking water samples from schools in Nepal were contaminated with fecal bacteria.Almost 1 billion people worldwide still practice open defecation rather than using a toilet.This is the practice of using fields, forests, lakes, rivers or other natural, open areas to deposit feces.
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Identify and state the phase of cell below.Explain your answer for each
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what is the function of the organelles identified in the picture
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Which sentence describes how the endoplasmic reticulum and Golgiapparatus work together?A. The endoplasmic reticulum provides instructions to the Golgiapparatus for making proteins.B. The Golgi apparatus receives proteins from the endoplasmicreticulum that it can modify or store for later use.C. The Golgi apparatus and the endoplasmic reticulum produceproteins that are then sent outside the cell.D. The endoplasmic reticulum produces usable energy that the Golgiapparatus uses to make proteins.
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If purple flowers (P) are dominant to white flowers (p) in pea plants, what wouldthe phenotype be of an individual with the genotype: homozygous dominant?O PurpleWhiteO PinkO Red
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Seeds are the major source of food for finches. Drought increases the number of large seeds and decreases the number of small seeds available to the finches. During periods of drought, only the finches with large beaks will be able to crack and eat the large seeds.
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Which of these animals get something useful from the other in this relationship
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Explain why each of the following misconceptions about photosynthesis is false:1 Plants do not need cellular respiration because they carry out photosynthesis2 Chlorophyll is the only plant pigment.3 Only plants are autotrophs.
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Can you please help me thank you very much just like
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What is the Forest station?
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If a plant that has wrinkled seeds has a parent with round seeds, what is the plants genotype? (Assume round is dominant over wrinkled)A. RRB. RrC. rrD. ww
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Biotechnology will allow the development of crops containing genes that will enable them to withstand _ and _ stresses.
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