Biology Milestone Review Flashcardizz: Cells

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What is active transport?

Back

Active transport is the process by which cells move substances against their concentration gradient, requiring energy (ATP).

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What is passive transport?

Back

Passive transport is the movement of substances across a cell membrane without the need for energy, following the concentration gradient.

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What are membrane-bound organelles?

Back

Membrane-bound organelles are specialized structures within a cell that are enclosed by membranes, such as the nucleus, mitochondria, and endoplasmic reticulum.

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What is osmosis?

Back

Osmosis is the diffusion of water across a selectively permeable membrane from an area of lower solute concentration to an area of higher solute concentration.

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What is a prokaryotic cell?

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A prokaryotic cell is a simple, unicellular organism that lacks a nucleus and membrane-bound organelles, such as bacteria.

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What is a eukaryotic cell?

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A eukaryotic cell is a complex cell that contains a nucleus and membrane-bound organelles, found in organisms like plants, animals, and fungi.

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What are amino acids?

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Amino acids are the building blocks of proteins, which are organic compounds made up of carbon, hydrogen, oxygen, nitrogen, and sometimes sulfur.

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What is hemoglobin?

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Hemoglobin is a protein in red blood cells that binds to oxygen and carries it from the lungs to the rest of the body.

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What is diffusion?

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Diffusion is the process by which molecules spread from an area of high concentration to an area of low concentration until evenly distributed.

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What is the difference between a plant cell and an animal cell?

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Plant cells have a cell wall, chloroplasts, and large central vacuoles, while animal cells do not have these structures.