Natural Disasters: Earthquakes and Seismos

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Questions and Answers

Which type of asexual reproduction involves the division of an organism into two or more parts?

  • Fragmentation
  • Fission (correct)
  • Budding
  • Parthenogenesis

What phenomenon occurs when the strength of saturated soil is reduced due to earthquake shaking?

  • Soil liquefaction (correct)
  • Fault offset
  • Ground shaking
  • Surface rupture

What term describes an organism that possesses both male and female reproductive organs?

  • Gynandromorphism
  • Sequential Hermaphroditism
  • Hermaphroditism (correct)
  • Parthenogenesis

Why does ground shaking occur during an earthquake?

<p>Due to the release of energy from stressed rocks (C)</p> Signup and view all the answers

Which process involves the release of gametes into the environment for fertilization?

<p>External Fertilization (D)</p> Signup and view all the answers

What is the defining characteristic of haploid cells?

<p>They contain a single set of chromosomes. (A)</p> Signup and view all the answers

What should you do first if you are inside a building during an earthquake?

<p>Duck, cover, and hold (C)</p> Signup and view all the answers

Which of the following actions is recommended to prepare for an earthquake?

<p>Participate in earthquake drills (B)</p> Signup and view all the answers

Which term describes the combination of oviparity and viviparity?

<p>Ovoviviparity (B)</p> Signup and view all the answers

What should you avoid if you are outside during an earthquake?

<p>Being near trees and power lines (A)</p> Signup and view all the answers

What is subsidence in relation to earthquakes?

<p>A downward vertical displacement on one side of the fault (C)</p> Signup and view all the answers

What is surface rupture?

<p>An offset of the ground surface due to fault activity (D)</p> Signup and view all the answers

What is a common misconception about the causes of ground shaking?

<p>It has no relation to earthquake waves (C)</p> Signup and view all the answers

What characterizes lateral spreading during an earthquake?

<p>Downhill movement of sloping grounds creating cracks (B)</p> Signup and view all the answers

What happens to rocks during an earthquake?

<p>They slip to relieve pent-up stress (D)</p> Signup and view all the answers

What is the main cause of a tsunami?

<p>Earthquakes displacing large volumes of water (D)</p> Signup and view all the answers

Which of the following describes the field of seismology?

<p>The study of seismic waves and earthquake activity (A)</p> Signup and view all the answers

Who is primarily responsible for studying earthquakes?

<p>Geologists (D)</p> Signup and view all the answers

What are landslides in the context of earthquake hazards?

<p>Various ground movements like rock falls and shallow debris flow (D)</p> Signup and view all the answers

What type of waves are seismic waves?

<p>Vibrations created by earthquakes or explosions (B)</p> Signup and view all the answers

What causes ground shaking during an earthquake?

<p>Sudden release of energy in the Earth's crust (C)</p> Signup and view all the answers

What is the primary assertion of Cell Theory?

<p>Cells are the basic unit of all living tissues. (C)</p> Signup and view all the answers

Who is credited with the discovery of the term 'cell'?

<p>Robert Hooke (D)</p> Signup and view all the answers

Which scientist proposed that all living organisms are made up of one or more cells?

<p>Schleiden &amp; Schwann (B)</p> Signup and view all the answers

Which of the following statements is true regarding prokaryotic and eukaryotic cells?

<p>Eukaryotic cells are generally larger than prokaryotic cells. (C)</p> Signup and view all the answers

Which of the following is not a postulate of Cell Theory?

<p>Viruses are considered living organisms due to their cellular structure. (B)</p> Signup and view all the answers

Who focused on the study of plant cells in the development of Cell Theory?

<p>Matthias Schleiden (D)</p> Signup and view all the answers

What is the main difference between prokaryotic and eukaryotic cells?

<p>Eukaryotic cells have a true nucleus, while prokaryotic cells do not. (B)</p> Signup and view all the answers

What is the main function of the nucleolus within the cell?

<p>Ribosome production (B)</p> Signup and view all the answers

Who was the first scientist to observe living cells under a microscope?

<p>Antonie Van Leeuwenhoek (D)</p> Signup and view all the answers

Which structure is primarily involved in determining the locations of other organelles within the cell?

<p>Centriole (C)</p> Signup and view all the answers

What is the primary role of the Rough Endoplasmic Reticulum?

<p>Sorting and synthesizing proteins (D)</p> Signup and view all the answers

Which organelle is responsible for storing food and water in a cell?

<p>Vacuole (B)</p> Signup and view all the answers

What is the function of the Smooth Endoplasmic Reticulum?

<p>Lipid synthesis and hormone production (B)</p> Signup and view all the answers

Which of the following describes autogamy in plant reproduction?

<p>Self-fertilization within the same flower (C)</p> Signup and view all the answers

What is allogamy in the context of sexual reproduction in plants?

<p>Cross-fertilization between two different plants (D)</p> Signup and view all the answers

What best describes a major difference between asexual and sexual reproduction?

<p>Sexual reproduction involves fusion of sex cells, asexual does not (A)</p> Signup and view all the answers

What is the primary function of the cell as described?

<p>Combination of metabolic processes (B)</p> Signup and view all the answers

Which organelle is specifically responsible for producing energy within the cell?

<p>Mitochondria (B)</p> Signup and view all the answers

What distinguishes plant cells from animal cells?

<p>Cell wall and chloroplasts (D)</p> Signup and view all the answers

In terms of cell division, which process is used by unicellular organisms as seen in bacteria?

<p>Binary fission (C)</p> Signup and view all the answers

Which of the following is NOT a function of cells?

<p>Locomotion (D)</p> Signup and view all the answers

What role do ribosomes play in the cell?

<p>Protein synthesis (B)</p> Signup and view all the answers

Which structure is responsible for controlling the activities of the cell?

<p>Nucleus (C)</p> Signup and view all the answers

Which of the following statements about vacuoles is correct?

<p>Vacuoles are involved in the storage of waste products. (C)</p> Signup and view all the answers

What type of nutrition do animal cells exhibit?

<p>Heterotrophic (A)</p> Signup and view all the answers

Which organelle helps in processing and packaging proteins?

<p>Golgi Body (D)</p> Signup and view all the answers

Flashcards

Earthquake

Perceptible shaking of the Earth's surface, caused by the sudden release of energy in the crust, creating seismic waves.

Seismic Waves

Vibrations generated by earthquakes, explosions, etc.

Seismology

Study of earthquakes and seismic waves.

Geologist

A person who studies earthquakes and seismic activity.

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Ground Subsidence

Lowering of the ground surface due to earthquake-related downward displacement.

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Lateral Spreading

Sloping ground moving downhill during an earthquake, causing cracks.

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Tsunami

Series of waves in a water body caused by large-volume water displacement.

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Earthquake-induced Landslides

Various ground movements (rock falls, slope failures, debris flows) triggered by earthquakes.

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Ground Shaking

The vibration of the Earth's surface caused by the release of energy from an earthquake.

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What happens when a fault breaks?

The stored energy in stressed rocks is released, creating seismic waves that radiate outward.

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Surface Rupture

An offset of the ground surface when a fault rupture extends to the Earth's surface.

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Liquefaction

The process where the strength and stiffness of soil is reduced by earthquake shaking, particularly in saturated soils.

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Why does Liquefaction occur?

Liquefaction happens when saturated soils lose their strength due to earthquake shaking.

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Spontaneous Generation

An outdated idea claiming that living organisms can arise from nonliving matter, like mice from cheese.

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What was the flaw in Spontaneous Generation?

It falsely suggested that non-living things could create life.

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Cell Theory

The fundamental theory in biology stating that all living organisms are composed of one or more cells, the cell is the basic unit of life, and new cells arise from pre-existing cells.

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Who proposed that all living organisms are made up of one or more cells?

Matthias Schleiden and Theodor Schwann, independently proposed this crucial part of cell theory.

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Who proposed that the cell is the fundamental unit of structure and organization?

Matthias Schleiden and Theodor Schwann, jointly proposed this fundamental part of cell theory.

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Who proposed that pre-existing cells give rise to new cells?

Rudolf Virchow proposed this central part of cell theory.

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Robert Hooke

An English polymath who, in 1665, used a compound microscope to observe a cork and coined the term 'cell'.

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Antoine Van Leeuwenhoek

A Dutch microbiologist who used a more powerful microscope than Robert Hooke and was the first scientist to observe living cells, calling them 'animalcules'.

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Prokaryotic Cell

A simple type of cell that lacks a true nucleus and other membrane-bound organelles. They are typically smaller than eukaryotic cells and are found in bacteria and archaea.

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Eukaryotic Cell

A complex type of cell that has a true nucleus and other membrane-bound organelles. They are typically larger than prokaryotic cells and are found in plants, animals, fungi, and protists.

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Cell Theory's 3rd Postulate

States that all living cells arise from pre-existing cells, meaning life cannot spontaneously arise from non-living matter.

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Cell

The basic unit of life, microscopic and observed only through a microscope, performing essential functions like respiration, regulation, reproduction, excretion, and growth.

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Organelle

A specialized subcellular structure within a cell that performs specific functions. Examples include the nucleus, mitochondria, and Golgi apparatus.

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What are the two main types of cells?

Prokaryotic and eukaryotic cells. Prokaryotic cells are simple, lacking a nucleus and membrane-bound organelles, while eukaryotic cells are complex and have a nucleus and membrane-bound organelles.

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Cell Division in Prokaryotes

Prokaryotes reproduce through binary fission, a simple process where a cell duplicates its DNA and splits into two identical daughter cells.

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Cell Division in Eukaryotes

Eukaryotes reproduce through mitosis, a more complex process involving multiple steps to ensure accurate DNA replication and division into two identical daughter cells.

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Animal vs. Plant Cells

Animal cells are generally irregular, heterotrophic (obtain food from other organisms), and lack cell walls and chloroplasts. Plant cells are rectangular, autotrophic (produce their own food through photosynthesis), and have cell walls, chloroplasts, and large vacuoles.

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Function of Mitochondria

The powerhouse of the cell, responsible for producing energy (ATP) that fuels the cell's activities.

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Function of Golgi Apparatus

Processes, packages, and distributes proteins and lipids within the cell, like a postal service for cell components.

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Function of Lysosomes

The cell's recycling center, responsible for breaking down waste products and worn-out cell parts.

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Asexual Reproduction

A type of reproduction where offspring arise from a single parent, without the fusion of gametes.

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Sexual Reproduction

A type of reproduction that involves the fusion of male and female gametes (sperm and egg) to create offspring.

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Hermaphroditism

Condition where an organism possesses both male and female reproductive organs.

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Haploid

A cell containing only one set of chromosomes, half the number found in a diploid cell.

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Diploid

A cell containing two sets of chromosomes, one from each parent.

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Nucleolus

A spherical structure found within the nucleus of a cell, responsible for the production and assembly of ribosomes.

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Centriole

Cylindrical structures found in animal cells, composed of microtubule triplets, which play a role in cell division and determining the location of other organelles.

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Rough Endoplasmic Reticulum (RER)

A network of interconnected membranes studded with ribosomes, where protein synthesis and sorting occur.

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Smooth Endoplasmic Reticulum (SER)

A network of interconnected membranes lacking ribosomes, involved in lipid synthesis, detoxification, and hormone production.

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Vacuole

A large, fluid-filled sac within a cell, primarily responsible for storing water, food, and other materials.

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Vesicle

Small, membrane-bound sacs that transport materials, secrete substances, digest material, and regulate cell pressure.

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Cytoplasm

The gelatinous substance that fills the interior of a cell, providing a medium for organelles to function and interact.

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Autogamy

Self-fertilization occurring within the same flower on a plant.

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Geitonogamy

Self-fertilization where pollen from one flower on a plant is transferred to another flower on the same plant.

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Allogamy

Cross-fertilization, where pollen from one plant is transferred to the stigma of a flower on a different plant.

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Study Notes

Natural Disasters

  • Earthquake (AKA Quake, Tremor, or Tremblor): Perceptible shaking of Earth's surface, caused by sudden energy release in the crust, generating seismic waves.

  • Seismic Waves: Vibrations created by earthquakes, explosions, or similar energy sources.

  • Seismology: Study of earthquakes and seismic waves.

  • Geologist: Someone who studies earthquakes and seismic activity.

  • Ground Shaking/Ground Motion: Energy radiating from earthquake waves, releasing stored energy in stressed rocks when a fault breaks.

  • Ground/Surface Rupture: Fault rupture extends to the Earth's surface, creating ground surface offset.

  • Liquefaction: Soil strength and stiffness reduce due to earthquake shaking, usually in saturated soils.

  • Earthquake-induced ground subsidence and lateral spreading: Subsidence (lowering of ground surface) during earthquakes due to downward vertical displacement. Lateral spreading occurs when sloping grounds move downhill.

  • Tsunami: A series of waves in a body of water, caused by large volume water displacement.

  • Landslides: Ground movements like rock falls, slope failures, and debris flows, a secondary earthquake hazard.

    • Often triggered by strong ground motion.

Theories of Life and the Cell

  • Spontaneous Generation: Archaic theory stating living organisms arise from nonliving matter.
  • Cell Theory: Fundamental biological theory stating cells are the basic units of living tissue.
    • All living organisms are made up of one or more cells.
    • The cell is the fundamental unit of structure and organization.
    • Pre-existing cells give rise to new cells.

Cell Theory Postulates and Proponents

  • Proponents of various postulates:
    • Schleiden and Schwann: Proponents of cells as basic units of structure and organization
    • Virchow: Postulate for pre-existing cells giving rise to new cells

People Involved in Cell Theory

  • Robert Hooke (1665): English Polymath, observed cork using a compound microscope, coined the term "cell."
  • Antoine van Leeuwenhoek (1670): Dutch Microbiologist, used more powerful microscope than Robert Hooke .

Types of Cells and Their Differences

  • Prokaryotic Cell: Lacks a true nucleus and membrane-bound organelles, unicellular, reproduces via binary fission.
  • Eukaryotic Cell: Contains a true nucleus and membrane-bound organelles, unicellular and multicellular, reproduces via mitosis.

Cell Organelles

  • Nucleus: Cell's control center.
  • Cell Membrane: Regulates material entering/leaving cell.
  • Mitochondria: Powerhouse of cell.
  • Ribosomes: Protein synthesis site.
  • Golgi Apparatus: Processes/packages proteins.
  • Lysosomes: Cell's waste disposal system.
  • Endoplasmic Reticulum: Transport system within cell.
  • Cytoplasm: Jelly-like substance filling cell.
  • Vacuoles: Storage for food and water.
  • Chloroplasts: (Plant cells): Site of photosynthesis.
  • Cell Wall: (Plant cells): Rigid outer layer.
  • Centrioles: (Animal cells): Involved in cell division.

Animal vs. Plant Cells

  • Animal cell: Irregular shape, heterotrophic, has lysosomes, no cell wall, no plastids, small vacuoles, has centrioles.
  • Plant cell: Rectangular shape, autotrophic (can produce own food), few/no lysosomes, has cell wall, has plastids, large vacuoles, no centrioles.

Proliferation of Life

  • Reproduction: Process where organisms produce offspring.
  • Asexual Reproduction: Creation of offspring without fusion of sex cells. Methods include fission, budding, fragmentation, parthenogenesis.
  • Sexual Reproduction: Creating offspring through fusion of female and male reproductive cells.
    • Autogamy (self-fertilization), Geitonogamy (self-fertilization within the same flower), Allogamy (cross-fertilization).
    • Internal/External fertilization
    • Viviparity (live birth), Oviparity (laying eggs), Ovoviviparity (developing eggs internally but hatched when released).

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