CHARACTERISTICS OF ORGANISMS
What is a primary characteristic of prokaryotic organisms?
They lack a nucleus.
What is the function of the cell membrane?
It controls what enters and exits the cell.
Name a characteristic that distinguishes eukaryotic cells from prokaryotic cells.
Presence of a nucleus.
What is the main difference between unicellular and multicellular organisms?
Unicellular organisms consist of one cell, while multicellular organisms consist of multiple cells.
What does it mean for an organism to be autotrophic?
it means the organism can produce its own food.
Give an example of a unicellular organism.
Bacteria
What role do ribosomes play in a cell?
They are responsible for protein synthesis.
Which type of organism is typically unicellular?
Prokaryotic organisms.
What is an advantage of being a multicellular organism?
Specialization of cells allows for more complex functions.
What is an example of a heterotrophic organism?
Animals, including humans.
What are autotrophic organisms?
Organisms that produce their own food through photosynthesis or chemosynthesis.
Describe the function of mitochondria.
They produce energy through cellular respiration.
What type of cells are found in plants and animals?
eukaryotic cells.
Name a multicellular organism.
dog or a tree.
How do autotrophs contribute to the food chain?
They are primary producers that provide energy for other organisms.
Compare the cellular structure of eukaryotic and prokaryotic cells.
Eukaryotic cells have a nucleus and membrane-bound organelles; prokaryotic cells do not.
What is the function of chloroplasts in plant cells?
They carry out photosynthesis to convert sunlight into energy.
Why are prokaryotic cells considered simpler than eukaryotic cells?
They lack membrane-bound organelles and a nucleus.
Can unicellular organisms perform all necessary life functions?
Yes, they can perform all functions within one cell.
Why are heterotrophic organisms dependent on autotrophs?
They rely on autotrophs for food and energy.
These organisms require external sources of organic compounds for nutrition and cannot produce their own food.
heterotrophic organisms
What is the role of vacuoles in plant cells?
They store nutrients, waste products, and help maintain turgor pressure.
Give an example of a eukaryotic organism.
Humans or plants.
Examples of these organisms include bacteria and some algae.
unicellular organisms
Describe how photosynthesis relates to autotrophic organisms.
Photosynthesis allows autotrophic organisms to convert light energy into chemical energy.