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Better Introduction to Biology assignments

Join a growing community of educators who are transforming the way they teach Introduction to Biology. Save time and improve learning outcomes by incorporating our full set of mastery-based quizzes and adaptive review assignments built for knowledge retention.
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46.7
Describe how genetic drift can affect allele frequencies in a population and why it is more significant in small populations.
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Instructor answered
Genetic drift is the change in allele frequencies due to random sampling effects. It is more significant in small populations because random events can have a larger impact on the overall genetic makeup of the population.
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When allele frequencies randomly change

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Class Outline

  • 8
    units
  • 65
    mastery quizzes
  • 65
    adaptive reviews
Unit 1: Structure of Water and Hydrogen Bonding
  • Unit 1: Structure of Water and Hydrogen Bonding
  • Unit 2: Cell Structure and Function
  • Unit 3: Cellular Energetics
  • Unit 4: Cell Communication and Cell Cycle
  • Unit 5: Heredity
  • Unit 6: Gene Expression and Regulation
  • Unit 7: Natural Selection
  • Unit 8: Ecology
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46.7
Describe the role of synaptic signaling in the nervous system and how it ensures precise communication between neurons.
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Mastery quizzes to turn assessments into learning experiences.

Our mastery quizzes provide immediate corrective feedback and re-quiz opportunities for learners to reduce stress, incentivize effort, and encourage learning.
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During the initial stage of enzyme catalysis, what is the primary interaction between the enzyme and the substrate?
  • A.
    The substrate binds to the enzyme's active site.
  • B.
    The enzyme changes its shape to fit the substrate.
  • C.
    The substrate is converted into the product immediately.
  • D.
    The enzyme releases the product.
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