Biology Overview: Living Things & Macromolecules
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Questions and Answers

What type of bacteria are rod-shaped?

  • Vibrios
  • Cocci
  • Spirilla
  • Bacilli (correct)

What type of Protists perform photosynthesis?

  • Bacteriophages
  • Plant-like Protists (correct)
  • Animal-like Protists
  • Fungi-like Protists

What is the cell wall of a Fungus made of?

  • Lignin
  • Chitin (correct)
  • Cellulose
  • Peptidoglycan

What structure do Euglena use to move?

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

What is a mutualistic relationship between a Plant's roots and a Fungus called?

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

Which type of reproduction requires two parents?

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

What is the term for maintaining a stable body temperature?

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

What type of macromolecule are enzymes considered to be?

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

What type of carbohydrate is made of more than one monomer?

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

How many layers of lipids make up the cell membrane?

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

What is the monomer of nucleic acids?

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

Which molecule is directly responsible for providing energy for cellular processes?

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

What type of reproduction produces offspring genetically identical to the parent?

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

What process does a unicellular organism use to reproduce?

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

What is the smallest unit of life?

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

What organelle is responsible for converting a nucleotide sequence into an amino acid sequence?

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

What cell structure controls the cell's activities in eukaryotes?

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

What organelle helps with plant cell shape by providing turgor pressure?

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

What organelle breaks down toxic materials in a cell?

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

What is stored in vacuoles?

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

What is the location of the DNA for a prokaryote called?

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

Where does cellular respiration take place in a cell?

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

Where is prokaryotic DNA located?

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

What term describes the process when faster mice can outrun predator cats?

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

What type of selection created the darker coloration of peppered moths during the Industrial Revolution?

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

What do scientists call random changes in an organism's genetic sequence?

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

What is the result of excessive use of antibiotics on bacteria?

<p>Antibiotic-resistant bacteria (B)</p> Signup and view all the answers

What term is used to describe the creation of new species?

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

What type of selection is demonstrated when individuals with thicker beaks survive to eat hard-shelled nuts?

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

In which Kingdom do molds belong?

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

What term describes organisms that get energy from dead or decaying matter?

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

If scientists are studying fish, birds, crabs, and alligators, but not the water or rocks, what level of organization are they studying?

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

What do the arrows in a food web represent?

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

Which of the following is a biotic factor?

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

What is the process of converting sunlight into stored energy called?

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

What is the largest number of organisms an environment can support called?

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

Which of the following best describes producers in an ecosystem?

<p>Organisms that create energy through sunlight (C)</p> Signup and view all the answers

What type of relationship occurs when one species benefits and the other is harmed?

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

What relationship does a predator have with its prey?

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

What type of nucleic acid can be found in a virus?

<p>Both RNA and DNA (B)</p> Signup and view all the answers

What occurs just before virus replication during the Lysogenic cycle?

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

Which macromolecule is the outer covering of a virus made of?

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

What is a microscopic particle that gets inside a cell and often destroys the cell?

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

Why do you need a new flu shot every year?

<p>The virus mutates rapidly. (C)</p> Signup and view all the answers

What type of bacteria live in very hot water?

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

Flashcards

Asexual reproduction

A form of reproduction where only one parent is involved, resulting in offspring identical to the parent.

Sexual reproduction

A form of reproduction involving two parents, where offspring inherit a mix of genetic traits from both.

Homeostasis

The process of maintaining a stable internal environment.

Cell

The smallest unit of life, enclosed by a membrane, and containing the building blocks of all living organisms.

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Macromolecules

Large molecules essential for life, composed of smaller repeating units called monomers.

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Monomers

The building blocks of macromolecules, which combine to form larger structures.

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Cellular Respiration

The process of converting stored energy into usable energy, primarily in the form of ATP.

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ATP (Adenosine Triphosphate)

A molecule that serves as the main energy currency for cells, fueling cellular processes.

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Cell Wall Composition

The cell wall in bacteria is made of peptidoglycan, a unique molecule that provides structure and support. Plant and fungi cell walls are made of cellulose and chitin, respectively.

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Surface Area to Volume Ratio

As a cell grows larger, its volume increases faster than its surface area. This limits the ability of the cell to efficiently transport nutrients and waste across the membrane.

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DNA Function

DNA contains the genetic instructions for building and maintaining an organism. It tells the cell how to create proteins, which are the workhorses of the cell.

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Vesicles

These small membrane-bound sacs, called vesicles, are responsible for transporting proteins and other molecules within the cell.

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Nucleus

The nucleus, also known as the control center, houses the cell's DNA and directs the activities of the cell.

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Mitochondria

Mitochondria are powerhouses of the cell, responsible for producing ATP, the energy currency of the cell. Cellular respiration takes place within mitochondria, breaking down glucose to generate ATP.

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Multicellular Organism

An organism composed of many cells is called a multicellular organism. These cells are specialized to perform different functions for the organism's survival.

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Photosynthesis

The process by which plants convert light energy into chemical energy in the form of glucose.

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Where is DNA stored in a Eukaryote?

The nucleus, a membrane-bound organelle found in eukaryotic cells.

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Where is prokaryotic DNA located?

The nucleoid region, a specific area within the cytoplasm.

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What is the nucleolus?

A small, dense region within the nucleus where ribosomes are assembled.

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What are microtubules?

Structures that provide support and shape to the cell. They are also involved in cell division and movement.

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What are ribosomes?

The site of protein synthesis, where amino acids are linked together to form proteins.

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What is the Golgi apparatus?

A network of membranes that modifies, packages, and transports proteins and lipids.

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Community

A group of interacting populations of different species in a common location.

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Biotic factors

Living factors in an ecosystem, such as plants and animals.

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Abiotic factors

Non-living factors in an ecosystem, such as temperature, water, and sunlight.

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Arrows in a food web

The direction of energy flow in a food web.

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Predator

An organism that hunts other organisms for food.

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Carrying capacity

The maximum number of organisms that an environment can support over a long period.

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Ecology

The study of how living things interact with each other and their environment.

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Scavenger

A consumer that feeds on dead or decomposing organisms.

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How do bacteria reproduce?

Bacteria reproduce asexually through a process called binary fission, where one cell divides into two identical daughter cells.

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What process do Cyanobacteria and Plants share?

Cyanobacteria, like plants, perform photosynthesis, using sunlight to produce energy and releasing oxygen as a byproduct.

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What are rod-shaped bacteria called?

Rod-shaped bacteria are called bacilli.

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What are spherical bacteria called?

Spherical bacteria are called cocci.

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What are spiral-shaped bacteria called?

Spiral-shaped bacteria are called spirilla.

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Heterotroph

A type of organism that relies on another living organism for nutrients. This is in contrast to organisms that can produce their own food.

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Mutualism

A symbiotic relationship where both species involved benefit from the interaction.

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Parasitism

A symbiotic relationship where one species benefits, while the other species is harmed.

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Commensalism

A symbiotic relationship where one species benefits, while the other species is not affected.

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Virus

A microscopic particle that needs a host cell to reproduce, often causing harm to the host.

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Capsid

The outer covering of a virus, which is composed of proteins and sometimes lipids. This covering allows the virus to attach to host cells.

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Viral Replication

The process by which a virus replicates within a host cell. It involves attaching to the cell, inserting its genetic material, and then using the host cell's machinery to produce new viruses.

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Study Notes

Living Things

  • Bacteria reproduce asexually.
  • Most animals reproduce sexually.
  • Asexual reproduction requires one parent.
  • Sexual reproduction requires two parents.
  • Maintaining a stable body temperature is homeostasis.
  • A stimulus is a change that causes a response.
  • Asexual reproduction produces genetically identical offspring.
  • Sexual reproduction produces genetically diverse offspring.

Macromolecules

  • Cell membranes are composed of two layers of lipids.
  • Lipids have a hydrophilic head and a hydrophobic tail.
  • Lipids include fats and oils.
  • Macromolecules are made of smaller molecules.
  • Macromolecules include proteins, nucleic acids, carbohydrates, and lipids.
  • Carbohydrates are composed of one or more monomers.
  • Monomers of lipids are fatty acids and glycerol.
  • The cell membrane is made of lipids.
  • Another term for macromolecule is polymer.
  • Monomer of carbohydrates is a monosaccharide.
  • Monomer of nucleic acids is a nucleotide.
  • Monomer of proteins is an amino acid.
  • Cellular processes use energy from molecules.
  • Animals store energy as glycogen.
  • Plants store energy as starch.
  • DNA and RNA are nucleic acids.
  • Enzymes are proteins.
  • Hormones are proteins.
  • Waxes are lipids.
  • Hemoglobin is a protein.
  • Cell walls are made of carbohydrates.
  • Cell membranes are made of lipids.
  • Macromolecules are used for short-term and long-term energy storage.
  • Macromolecules carry information (DNA).
  • Molecules speed up chemical reactions (enzymes).

Cells

  • Cell division is a means of asexual reproduction.
  • Bacterial and plant/fungal cell walls are different.
  • Small cells have a large surface area-to-volume ratio.
  • DNA encodes for protein production.
  • Membrane bubbles that carry proteins are vesicles.
  • Eukaryotic cells have a nucleus that controls activities.

Other

  • Chemical processes occur in mitochondria.
  • Multicellular organisms are made of many cells.
  • Unicellular organisms are made of one cell.
  • Vacuoles store substances.
  • Plant cell walls are made of cellulose.
  • Prokaryotic DNA is located in the cytoplasm.
  • The smallest unit of life is a cell.
  • Metabolism is the sum of all chemical reactions in an organism.
  • Cytoplasm is the water-based part of the cell.
  • Ribosomes are part of protein synthesis.
  • Ribosomes are sometimes attached to endoplasmic reticulum.
  • Organelles break down harmful substances.
  • Organelles convert nucleotide sequences to amino acid sequences.
  • Liver cells process toxins.
  • Muscle cells produce ATP (energy).
  • Plant cell shape is maintained by turgor pressure.
  • Animal cells only contain certain organelles.
  • The mitochondrion makes ATP.
  • Ribosomes make proteins.
  • Chloroplasts make sugars.
  • The Golgi apparatus modifies and ships proteins.
  • Animal cells contain vacuoles to store water.
  • Plant cells have a cell wall, which animal cells lack.
  • Chlorophyll is a pigment required for photosynthesis.
  • Unicellular organisms use binary fission to reproduce.
  • Structures in the cell maintain shape, support, and movement.
  • The cell membrane has selective permeability.
  • Cell theory defines living things.
  • Bacteria are prokaryotic cells.
  • Fungi are eukaryotic cells.
  • Protists are eukaryotic cells.
  • Plant cells possess a central vacuole.
  • Animal cells contain lysosomes.
  • Lipids are synthesized in the endoplasmic reticulum.
  • Ribosomes are located in the cytoplasm of prokaryotic cells.
  • Cellular respiration occurs in mitochondria.
  • Photosynthesis occurs in chloroplasts.
  • Eukaryotic DNA is stored in the nucleus.
  • Prokaryotic DNA is located in the nucleoid region.
  • The nucleolus is inside the nucleus.
  • The study guide contains a plant cell diagram labeled for review.

Evolution

  • Homologous structures and vestigial structures are evidence of evolution.
  • Whales’ hip bones are vestigial structures.
  • Evolution occurs via genetic changes.
  • Traits that increase survival are adaptive traits.
  • Natural selection is the change in a population's genetic makeup over time.
  • The transfer of characteristics from parents to offspring is heredity.
  • Sexual selection describes the bright colors of male birds.
  • Artificial selection is caused by humans.
  • Natural selection is faster than artificial selection.
  • Lamarck proposed inheritance of acquired traits.
  • Darwin traveled on the HMS Beagle.

Classification

  • Organisms are classified into domains and kingdoms.
  • Organisms within the same kingdom should also be in the same order.
  • Scientists use a hierarchical system to classify living things.

Ecology

  • Consumers obtain energy from other organisms.
  • Producers create their own energy.
  • Biotic factors affect living things.
  • Abiotic factors affect non-living things.
  • Food chains show energy flow.
  • The highest number of organisms an environment can support is its carrying capacity.
  • Ecology is the study of interactions between organisms and their environment.

Viruses

  • Viruses need a host cell to reproduce.
  • Viruses insert their genetic material into host cells.
  • The lytic and lysogenic cycles are methods of viral reproduction.

Bacteria

  • Bacteria are single-celled prokaryotes.
  • Some bacteria use chemicals for energy.
  • Bacteria exist in many environments and can survive in various conditions.
  • Binary fission is bacterial cell division.

Protists

  • Protists are mostly single-celled eukaryotic organisms.
  • There are three main types of protists (animal-like, plant-like, fungus-like).
  • Protists use cilia, flagella, and pseudopods for movement.

Fungi

  • Fungi are eukaryotic organisms that are either single-celled or multicelled.
  • Fungi form partnerships (mycorrhizae) with plant roots.
  • Fungi reproduce using spores.

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Description

This quiz covers fundamental concepts in biology related to living organisms and macromolecules. You'll explore the differences between asexual and sexual reproduction, as well as the structure and function of macromolecules such as proteins, lipids, carbohydrates, and nucleic acids. Test your knowledge and deepen your understanding of these essential topics!

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