Podcast
Questions and Answers
What is thermoregulation?
What is thermoregulation?
A process that allows your body to maintain its core internal temperature.
What does homeostasis refer to?
What does homeostasis refer to?
Processes that living things use to actively maintain fairly stable conditions necessary for survival.
What is a stimulus?
What is a stimulus?
Anything that makes an organism or a part of an organism react in some way.
What is a response?
What is a response?
Signup and view all the answers
What are receptors?
What are receptors?
Signup and view all the answers
What is negative feedback?
What is negative feedback?
Signup and view all the answers
What is positive feedback?
What is positive feedback?
Signup and view all the answers
What does a dendrite do?
What does a dendrite do?
Signup and view all the answers
What is the function of the cell body in a neuron?
What is the function of the cell body in a neuron?
Signup and view all the answers
What is the purpose of an axon?
What is the purpose of an axon?
Signup and view all the answers
What type of neuron receives information?
What type of neuron receives information?
Signup and view all the answers
What does a motor neuron do?
What does a motor neuron do?
Signup and view all the answers
Which of the following types of receptors respond to movement and pressure?
Which of the following types of receptors respond to movement and pressure?
Signup and view all the answers
What are alleles?
What are alleles?
Signup and view all the answers
What does genetics study?
What does genetics study?
Signup and view all the answers
What is a genome?
What is a genome?
Signup and view all the answers
What is heredity?
What is heredity?
Signup and view all the answers
What is a phenotype?
What is a phenotype?
Signup and view all the answers
What sex chromosomes do females have?
What sex chromosomes do females have?
Signup and view all the answers
What is a dominant trait?
What is a dominant trait?
Signup and view all the answers
What is a recessive trait?
What is a recessive trait?
Signup and view all the answers
Study Notes
Feedback Mechanism
- Thermoregulation: Enables the body to maintain a stable core internal temperature.
- Homeostasis: Processes that ensure living organisms maintain stable conditions essential for survival.
- Stimulus: Any factor that provokes a reaction in an organism or its parts.
- Response: The action or change in behavior of an organism resulting from a specific stimulus.
- Receptors: Organs or cells that detect external stimuli (e.g., light, heat) and relay signals to sensory nerves.
- Negative Feedback: A common homeostatic mechanism that counteracts changes to stabilize systems (e.g., sweating to prevent overheating).
- Positive Feedback: Mechanism where the response amplifies the initial stimulus (e.g., increased heart rate during exercise to supply oxygen).
Parts of a Nerve Cell (Neuron)
- Dendrite: Receives signals and transmits them to the cell body.
- Cell Body: Contains the nucleus and organelles.
- Axon: Transmits information away from the neuron’s cell body.
- Sensory Neuron: Gathers information from the environment.
- Interneuron: Processes information, primarily located in the brain and spinal cord.
- Motor Neuron: Triggers actions in muscles or glands.
Types of Neurons
- Mechanoreceptors: Detect movement and pressure; located in the skin; involved in touch and hearing.
- Thermoreceptors: Respond to changes in temperature; located in the skin; involved in the sense of touch.
- Pain Receptors: Activated by tissue damage; located in the skin; involved in the sense of touch.
- Chemoreceptors: React to chemical stimuli; located in the nose and mouth; involved in taste and smell.
- Photoreceptors: Respond to light; located in the eyes; involved in the sense of sight.
Genetics
- Alleles: Variations of a gene that govern different traits.
- Genetics: Study of how biological traits are inherited.
- Genomes: A complete set of genetic instructions within an organism.
- Heredity: Transmission of traits from parents to offspring.
- Inheritance: Mechanism by which genetic information is conveyed from parent to child.
- Genes: Basic units of heredity determining specific traits in offspring.
- Dominant Trait: A trait that masks the presence of a recessive trait.
- Recessive Trait: A trait that is masked by a dominant trait.
- Phenotype: Observable physical characteristics of an organism.
- Genotype: Genetic makeup of an organism.
- Homozygous: Organism with two identical alleles for a trait.
- Heterozygous: Organism with two different alleles for a trait.
Chromosomes
- Sex chromosomes determine an individual's sex: females have two X chromosomes (XX), while males have one X and one Y chromosome (XY).
- Female gametes (eggs) always carry an X chromosome.
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
Related Documents
Description
Prepare for your exams with this final reviewer focused on feedback mechanisms in General Biology 2. Delve into critical concepts such as thermoregulation, homeostasis, stimulus, and response to enhance your understanding of biological processes necessary for survival.