Life Science

In what ways can bacteria be beneficial?

• Only by causing disease

• By aiding digestion and recycling nutrients

• By making plants sick

• Bacteria have no beneficial uses

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What do all plants have in common?

• They all produce seeds.

• They use sunlight to make food through photosynthesis.

• They can move from place to place.

• They are nonliving.

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1. Characteristics of a unicellular organism:

• • Made up of only one cell.

  • Can do all life processes (like eating, growing, and reproducing) in that one cell.

  • Examples: bacteria, amoebas, and yeast.

• • All living things are made of cells.

  • The cell is the basic unit of life.

  • All cells come from other cells.

• • The cytoskeleton is like the "framework" inside the cell that gives it structure and helps it hold its shape.

  • It also helps with cell movement and the movement of materials inside the cell.

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1. Cell theory:

• • is any living thing that can grow, reproduce, and respond to its environment. It can be made of one cell (like bacteria) or many cells (like humans).

• • All living things are made of cells.

  • The cell is the basic unit of life.

  • All cells come from other cells.

• Prokaryotes, like bacteria, do not have a nucleus, so their DNA is found in the cytoplasm)

• • The cell will shrink and may not work properly because it’s dehydrated.

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• Small structures that make proteins in the cell.

• Ribosomes

• Golgi complex

• Cell wall

• Large central vacuole

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Organelles in plant cells that use sunlight to make food (photosynthesis).

• Lysosomes

• Cell wall

• Chloroplasts

• Ribosomes

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1. Definition of Organism:

In prokaryotes, where is DNA located?

• Carbohydrates

• Mitochondria

•   Cytoplasm

• Endoplasmic reticulum

What do Carbohydrates give us?

• Energy

• Water

• Muscle

• Happiness

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What happens when a cell gets too much water?

• Hydrates slower

• Stops working

• Hydrates faster

• Bursts

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