Biology Chapter 5: Cells and Ecosystems

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to Lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

What is the primary function of the nervous system?

  • To filter waste from the blood
  • To transmit signals and respond to stimuli (correct)
  • To transport nutrients and oxygen
  • To facilitate gas exchange

Which of the following represents an acidic solution?

  • pH of 9
  • pH of 10
  • pH of 5 (correct)
  • pH of 7

What role do decomposers play in an ecosystem?

  • They consume other organisms for energy
  • They convert sunlight into chemical energy
  • They break down dead organisms and recycle nutrients (correct)
  • They produce their own food through photosynthesis

What are the two main products of photosynthesis?

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

What is the term for the physical expression of a trait?

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

What is the primary function of ribosomes?

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

Which organelle is responsible for photosynthesis in plant cells?

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

What term describes the role an organism plays in its ecosystem?

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

What is the result of cytokinesis?

<p>The cytoplasm is divided, resulting in two separate cells (A)</p> Signup and view all the answers

What are the building blocks of nucleic acids?

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

How many chromosomes are in a human gamete?

<p>23 (C)</p> Signup and view all the answers

What is the primary source of energy for most ecosystems?

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

What is the smallest unit of life?

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

Flashcards

Mitochondria

The power plant of the cell, responsible for generating energy (ATP) through cellular respiration.

Chloroplast

The organelle that captures light energy from the sun and converts it into chemical energy (glucose) during photosynthesis.

Homeostasis

The process of maintaining a stable internal environment within an organism, like regulating temperature or blood sugar.

Tissue

A group of similar cells that work together to perform a specific function, like muscle tissue or nerve tissue.

Signup and view all the flashcards

Ecosystem

A stable community of different populations of organisms and their physical environment, such as a forest or a lake.

Signup and view all the flashcards

Biology

The study of living organisms and their interactions with the environment.

Signup and view all the flashcards

Cell

The basic unit of life, often referred to as the building block of all living things.

Signup and view all the flashcards

Heredity

The process of transferring genetic information from one generation to the next.

Signup and view all the flashcards

Photosynthesis

The process by which plants convert sunlight into chemical energy (glucose) and oxygen.

Signup and view all the flashcards

Genotype

The genetic makeup of an organism, represented by the combination of alleles.

Signup and view all the flashcards

Phenotype

The physical expression of a trait, determined by the genotype.

Signup and view all the flashcards

Consumers

Organisms that eat other organisms for energy.

Signup and view all the flashcards

Study Notes

Cellular Organelles

  • Mitochondria function: Energy production
  • Chloroplast function: Photosynthesis in plant cells
  • Selectively permeable membrane: Allows only certain substances to pass through
  • Ribosomes function: Protein synthesis
  • Golgi apparatus function: Packages and distributes proteins
  • Plant cell wall function: Provides support and protection

Macromolecules

  • Protein building blocks: Amino acids
  • Primary energy source: Carbohydrates
  • Lipid function: Long-term energy storage and insulation
  • Nucleic acid building blocks: Nucleotides

Cell Division

  • Mitosis purpose: Produce identical daughter cells
  • Human gamete chromosomes: 23
  • Meiosis result: Four genetically unique cells
  • Mitosis middle phase: Metaphase (chromosomes line up)
  • Cytokinesis result: Cytoplasm division, creating two separate cells

Ecosystems

  • Abiotic factor example: Temperature
  • Organism's role in ecosystem: Niche
  • Autotroph: Makes its own food
  • Heterotroph: Consumes other organisms
  • Ecosystem energy source: The sun
  • Group of same species: Population

Biology Basics

  • Homeostasis definition: Maintaining a stable internal environment
  • Genetic information molecule: DNA (Deoxyribonucleic Acid)

Human Systems

  • Circulatory system: Transports nutrients, oxygen, and waste
  • Nervous system function: Transmit signals and respond to stimuli
  • Waste removal organ: Kidneys
  • Gas exchange system: Respiratory system

Chemistry of Life

  • Acidic solution pH range: Less than 7
  • Basic solution pH range: Greater than 7
  • Universal solvent: Water
  • Element in organic molecules: Carbon

Food Chains and Ecosystems

  • Producers: Organisms producing their own food (e.g., through photosynthesis)
  • Consumers: Organisms eating other organisms
  • Decomposers role: Break down dead organisms, recycle nutrients
  • Trophic level: A step in a food chain or web
  • Photosynthesis process: Plants convert sunlight to chemical energy
  • Photosynthesis products: Glucose and oxygen
  • Genetic material: DNA and RNA
  • Heredity: Passing of traits from parents to offspring
  • Genotype: Genetic makeup
  • Phenotype: Physical expression of a trait

Studying That Suits You

Use AI to generate personalized quizzes and flashcards to suit your learning preferences.

Quiz Team

Related Documents

Biology Flashcards PDF

More Like This

Cellular Organelles Quiz
20 questions
Cellular Organelles and Cell Membrane Quiz
13 questions
Cellular Organelles Overview
26 questions
Use Quizgecko on...
Browser
Browser