Exploring Life Forms and Their Traits

What is the main difference between prokaryotic and eukaryotic cells?

• Prokaryotic cells have a nucleus; eukaryotic cells lack a nucleus.

• Prokaryotic cells have membrane-bound organelles; eukaryotic cells do not.

• Prokaryotic cells lack a nucleus; eukaryotic cells have a nucleus.

• Eukaryotic cells are smaller than prokaryotic cells.

How do multicellular organisms differ from unicellular organisms in terms of structure?

• Multicellular organisms have specialized cells forming tissues and organs, whereas unicellular organisms consist of a single cell.

• Multicellular organisms can only exist in aquatic environments.

• Multicellular organisms are always larger than unicellular organisms.

• Unicellular organisms have multiple types of cells working together.

Describe how autotrophs obtain their energy compared to heterotrophs.

• Autotrophs obtain energy from inorganic sources; heterotrophs obtain energy by consuming organic matter.

• Autotrophs and heterotrophs both obtain energy from the same sources.

• Autotrophs obtain energy from sunlight; heterotrophs do not require energy.

• Autotrophs consume organic matter; heterotrophs obtain energy from inorganic sources.

What role do prokaryotic organisms play in the environment?

• Prokaryotic organisms are primarily responsible for photosynthesis.

• Prokaryotic organisms are essential for nutrient cycling, decomposition, and ecosystem balance.

• Prokaryotic organisms are harmful and contribute to pollution.

• Prokaryotic organisms have no significant impact on the environment.

Explain how eukaryotic cells are more complex than prokaryotic cells.

• Eukaryotic cells are more complex than prokaryotic cells due to the presence of a nucleus, membrane-bound organelles, and greater structural complexity.

• Eukaryotic cells are unicellular while prokaryotic cells are multicellular.

• Prokaryotic cells are larger and more complex than eukaryotic cells.

• Eukaryotic cells lack a nucleus and organelles.

List two examples of autotrophs and describe their energy sources.

• Fungi - energy source: decomposition

• Animals - energy source: photosynthesis

• Mushrooms - energy source: sunlight

• 1) Plants - energy source: sunlight; 2) Chemosynthetic bacteria - energy source: chemical reactions.

How do heterotrophs depend on autotrophs for survival?

• Heterotrophs do not need autotrophs for survival.

• Heterotrophs depend on autotrophs for food and oxygen.

• Heterotrophs rely on other heterotrophs for nutrients.

• Heterotrophs produce their own food and oxygen.

What are some common characteristics shared by all eukaryotic cells?

• Eukaryotic cells have a nucleus, membrane-bound organelles, a cytoskeleton, and undergo mitosis.

• Prokaryotic cells have a nucleus and membrane-bound organelles.

• Eukaryotic cells lack a cytoskeleton and reproduce only asexually.

• All eukaryotic cells are unicellular and do not undergo mitosis.

Explain the importance of photosynthesis in autotrophic organisms.

• Photosynthesis is a process that consumes oxygen.

• Photosynthesis is crucial for autotrophic organisms as it enables them to produce their own food and oxygen, sustaining themselves and other life forms.

• Photosynthesis is only important for animals.

• Photosynthesis occurs in heterotrophic organisms.

Label the following Cells with the correct Cell Type.

a

b

Viruses

Eukaryotes

Prokaryotes

Answer explanation

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Tags

TX.112.42.C.5.B.