Biology Classification and Taxonomy

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16 Questions

What is the primary characteristic of the Plant Kingdom?

Many celled and make their own food

What is the term for the grouping or organisms by characteristics and similar traits?

Classification

What is the correct order of the Taxonomy Pyramid?

Kingdom, Phylum, Class, Order, Family, Genus, Species

What is the main characteristic of the Fungi Kingdom?

Absorb food from other living things or dead things

What is the Science of naming, describing, and classifying organisms?

Taxonomy

What do most living things gain energy from?

Plants

What is the characteristic of the Monerans Kingdom?

One celled and no cell nucleus

What is the importance of plants in the ecosystem?

They are a source of food and help make the Earth's climate stable

What is the main function of the mitochondria in a cell?

To provide energy to the cell

What is the term for the smallest unit of life?

Cell

Which type of cell has a membrane-covered nucleus?

Eukaryotic cell

What is the function of the lysosomes in a cell?

To digest food and foreign particles

What is the term for the outer layer of the cell that controls what enters and leaves the cell?

Cell membrane

What is the site where proteins are made in a cell?

Ribosomes

What is the term for the jelly-like fluid that holds the organelles in a cell?

Cytoplasm

What is the term for the process by which cells maintain a stable internal environment?

Homeostasis

Study Notes

Classification of Organisms

  • Carolus Linnaeus developed a classification system
  • Scientists classify organisms based on:
    • Cell structure
    • Mode of nutrition
    • Reproduction

Characteristics of Kingdoms

Animal Kingdom

  • Multicellular
  • Obtain food by consuming living or once living organisms

Plant Kingdom

  • Multicellular
  • Make their own food through photosynthesis

Fungi Kingdom

  • Most are multicellular
  • Obtain food by absorbing nutrients from other living or dead organisms

Protists Kingdom

  • Most are single-celled
  • Obtain food through photosynthesis, consuming living or once living organisms, or absorbing nutrients

Monerans Kingdom

  • Single-celled
  • No cell nucleus
  • Some make their own food, while others obtain food by consuming living or once living organisms

Examples of Kingdoms

  • Monerans: bacteria
  • Protists: algae, amoebas, euglena, paramecium
  • Fungi: mushrooms, yeasts, molds
  • Plants: trees, flowers, grasses, ferns, mosses
  • Animals: monkeys, humans, birds, frogs, fish, spiders

Importance of Plants

  • Most living things gain energy directly or indirectly from plants
  • Plants serve as a source of food and help maintain the Earth's climate

Cell Structure

  • The smallest unit of life that can carry out activities
  • All cells must:
    • Obtain nutrients and energy
    • Remove waste products
    • Grow
    • Reproduce

Cell Types

  • Unicellular: made up of one cell
  • Multicellular: made up of many cells

Cell Theory

  • All living things are made up of cells
  • Cells are the basic unit of life
  • All cells come from existing cells

Cell Organization

  • Cells → Tissues → Organs → Organ System

Organelles

  • Structures within cells that enable them to live, grow, and reproduce

Cell Membrane

  • Outer layer of the cell
  • Allows nutrients in and waste out
  • Protects the cell
  • Controls incoming and outgoing substances
  • Maintains concentrations of various substances
  • Selectively permeable

Cytoplasm

  • Jelly-like fluid within the cell
  • Holds organelles

Nucleus

  • Control center of the cell
  • Contains the cell's DNA

Mitochondria

  • Power center of the cell
  • Provides energy for cellular activities

Ribosomes

  • Site of protein synthesis
  • Cell parts are made of proteins

Endoplasmic Reticulum

  • Transportation system of the cell
  • Rough ER: ribosomes attached
  • Smooth ER: no ribosomes attached

Lysosomes

  • Digest food, particles, and cell parts
  • Protects the cell by digesting foreign invaders

Quiz on classification systems, including Linnaeus' system, characteristics of organisms, and taxonomy pyramid. Covers cell structure, nutrition, reproduction, and kingdoms of life.

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