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34 Cards in this Set

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Cell Theory

All cells are created from other cells

How cells reproduce

Prokaryotes

Small, single-cell bacteria

Simplest structure of life

Eukaryotes

Organisms that contain a nucleus which can be single or multi-cellular

Animals are these

Nucleus

Organelle that holds DNA

"Brain of the cell"

Chromosome

Threads of proteins and DNA passed down genetically

Normal humans have 22 pairs

Nucleoid

Single cellular chromosome that holds most of genetic material. Found without membranes.

In prokaryotes

Plasmids

Part of DNA that can separate from chromosomes which send important genetic info to other cells

In bacteria and yeast

Flagella

Tails of cells made from proteins

They resemble long strings

Cell/Plasma Membrane

Membrane separating interior and outside of cell

Selectively permeable membrane

Cell wall

Layer of polysaccharides that serve as a boundary on the outside of a cell

Found on the exterior of plant cells

Ribosomes

Builds proteins within cells

Connected amino acids that make chains

Cytoplasm

Fluid within cell membrane that takes up empty space

Also called protoplasm

Cytosol

Cytoplasm that's water-soluble which surrounds organelles

Made from proteins plus water and salt.

Organelles

Structures inside eukaryote cells

Ex.: mitochondria, nucleus

Nucleolus

Structure inside nucleus constructed of RNA and proteins

Makes ribosomal subunits

Cytoskeleton

Fibers that maintain the shape of the cell

Helps cell to move and divide

Microtubules

Helps organelles to move and supports cell shape

Part of cytoskeleton

Rough ER

Surrounded by ribosomes and transports proteins

Membranes that look like tubes

Smooth ER

Makes lipids and hormones

In eukaryotes like plants and animals

Golgi apparatus

Receives proteins and fats and makes molecules to transport and store

Works with rough ER

Vesicles

Transports and stores cellular products and they get rid of waste from metabolism

2 sacks made of fluid

Vacuoles

Store nutrients and waste for cell survival

Found in plants and animals

Centrioles

Ensures cell division in mitosis and meiosis

They are found forming a right angle

Cilia

Helps cell movement

Looks like hair identical to flagella

Lysosomes

Vesicle that stores enzymes

Sends products of ER to Golgi apparatus

Mitochondria

Makes ATP and is the location of ETS

"Powerhouse of the cell"

Chloroplasts

Produces food and converts light energy to sugars

In plant cells

Colony

Microorganisms from one large, visible cell

From Mother cell of the same species

Multicellular

Organism made of more than 1 cell

Eukaryotes

Cell differentiation

When unspecialized cells mature to complete specific jobs

Major change in cell form

Tissue

group of cells with the same function and structure

Found in multicellular organisms

Organ

Group of tissues that complete a specific function

Ex.: stomach, heart

Organism

A living thing or system

Animal, plant, bacteria

Organ system

Group of organ working together to complete a goal

Respiratory system