Needs of Living Things
What do all living things need for cellular activity?
Water
What is the smallest working unit of life?
Cell
What is the correct order of levels of organization from smallest to largest?
Cell, Tissue, Organ, Organ System, Organism
What is the function of ribosomes?
They make proteins (from amino acids).
What does it mean for organisms to evolve?
To change over time to better survive in their environment by keeping the traits that best help them to do so, and eliminating those that don't.
What type of organisms are producers?
Autotrophs
What are the two types of cells?
Prokaryotic (bacteria) and Eukaryotic (plant and animal)
What do tissues consist of?
Groups of similar cells working together to perform a specific function (job).
What is the role of chloroplasts?
They conduct photosynthesis to make sugar for plants.
What does it mean for an organism to respond stimuli?
They react to the changes in their environment.
What do living things compete for in their environment?
Shelter/Space, Food, and Water
What is the function of the nucleus?
It directs cell activities.
What is the name of an organ system in the human body?
Integumentary (skin), Skeletal, Muscular, Nervous, Cardiovascular (or Circulatory), Lymphatic, Respiratory, Digestive, Urinary (or Excretory), Endocrine, or Reproductive System.
What do lysosomes do?
They digest excess or worn-out organelles and food particles.
What is heredity?
The passing of traits from parents to offspring.
Why is water essential (important/crucial) for organisms?
It helps carry out cellular activity, reproduce, and break down food.
What organelle is known as the powerhouse of the cell?
Mitochondria
What is an organism? Provide one example.
An entire living thing that carries out all basic life functions.
Example: Human
What organelle controls what enters and exits the cell?
Cell membrane
How do traits get passed to offspring?
Through genetic material (DNA).
What is the role of nutrients in living things?
They provide energy.
What is the main difference between prokaryotic and eukaryotic cells?
- Prokaryotic cells do not have a nucleus and membrane-bound organelles (aka; organelles contained/held together by a membrane)
- Eukaryotic cells have a nucleus and membrane-bound organelles
How do cells form tissues?
Similar cells group together to perform a specific job.
Why is the endoplasmic reticulum important for cells?
It transports proteins and breaks down drugs.
What is the significance of evolution within populations?
Traits best suited for the environment are passed on to future generations.