Biology and Chemistry Overview
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Questions and Answers

What are the primary characteristics of prokaryotic cells?

  • They are always larger than eukaryotic cells.
  • They lack membrane-bound organelles. (correct)
  • They have a membrane-bound nucleus.
  • They contain multiple chromosomes.

Which of the following statements about isotopes is true?

  • Isotopes are solely used in organic chemistry.
  • Isotopes have the same atomic number but different atomic masses. (correct)
  • Isotopes have different numbers of protons.
  • Isotopes have identical physical and chemical properties.

What distinguishes noble gases from other elements in the periodic table?

  • They are highly reactive.
  • They exist in liquid form at room temperature.
  • They have filled valence electron shells. (correct)
  • They possess only one electron.

What is the outcome of dehydration synthesis in macromolecule formation?

<p>Water is removed from the reactants. (D)</p> Signup and view all the answers

Which of these defines the concept of a population in biology?

<p>A group of organisms of the same species in a particular area. (A)</p> Signup and view all the answers

Flashcards

Prokaryotic Cell

A simple cell lacking a nucleus and membrane-bound organelles. Their DNA is located in a region called the nucleoid.

Eukaryotic Cell

A complex cell with a nucleus and membrane-bound organelles. Their DNA is enclosed within the nucleus.

Dehydration Synthesis

A chemical reaction that joins monomers together to form polymers by removing a water molecule.

Hydrolysis

A chemical reaction that breaks down polymers into monomers by adding a water molecule.

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Carbon's Uniqueness

Carbon can form four covalent bonds, allowing for the creation of a wide variety of complex organic molecules. It's the backbone of life.

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Study Notes

Introduction

  • Scientific method
  • Prokaryotic vs. Eukaryotic cells
  • Characteristics of prokaryotic cells
  • Characteristics of eukaryotic cells
  • Themes in biology
  • Common structures in living things
  • Biological organization
  • Domains and their characteristics
  • Kingdoms and their characteristics
  • Factors influencing an organism's location
  • Nucleotide composition
  • Definitions of species, population, community, ecosystem, biome
  • Charles Darwin and natural selection
  • Taxonomy

Chemistry

  • Subatomic particles of an atom and their charges
  • Atomic number
  • Atomic mass (weight)
  • Characteristics of noble gases
  • Isotopes
  • Influence of subatomic particles on an atom
  • Types of chemical bonds and their descriptions
  • Maximum number of electrons in the outermost energy level (valence shell)
  • Definition of electronegativity
  • Density of ice compared to liquid water and its significance
  • Properties of water
  • Bond influencing water properties
  • Definition of an acid
  • Definition of a base
  • Man-made molecules contributing to acid rain

Macromolecules

  • Uniqueness of carbon
  • Definition of dehydration synthesis (what's removed)
  • Definition of hydrolysis (what's added)
  • Components of a triglyceride
  • Difference between unsaturated and saturated fatty acids

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Description

This quiz covers key concepts from biology and chemistry, including the scientific method, cell types, and fundamental chemistry principles such as atomic structure and chemical bonds. Test your knowledge on the characteristics of living organisms, taxonomy, and the properties of water, among other essential topics.

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