Unit 4 - Cells Vocab Flashcards

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1
Q

Cell

A

The basic unit of life

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2
Q

Unicellular

A

Made of only one cell

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3
Q

Multicellular

A

Made of many cells

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4
Q

Prokaryotic Cells

A

Simple organisms without a nucleus

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5
Q

Eukaryotic cells

A

Cells that contain a nucleus and membrane bound organelles

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6
Q

Membrane bound

A

Organelle is surrounded by/contained in a membrane

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7
Q

Autotroph

A

An organism that has the ability to make its own food

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8
Q

Heterotroph

A

An organism that must obtain its food from another source

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9
Q

Total magnification

A

The total calculation of zoom on a microscope (ocular x objective)

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10
Q

Ocular lens

A

The eyepiece on a microscope, has a power of 10x magnification

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11
Q

Objective Lens

A

The rotating power objective lens on a microscope (4x, 10x, 40x)

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12
Q

Organelle

A

A tiny part of a cell that carries out a specific function

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13
Q

Ribosomes

A

An organelle that synthesizes proteins

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14
Q

Cytoplasm

A

Jelly-like substance that fills the cell and protects the organelles; site of cellular respiration

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15
Q

Cell membrane

A

Boundary that surrounds all cells and determines what enters and exits

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16
Q

DNA/RNA

A

Nucleic acids that contain directions for making proteins and are found in the nucleus

17
Q

Nucleus

A

Helps control cell activities and is known as the brain

18
Q

Mitochondria

A

Produces energy for cells, site of cellular respiration

19
Q

Vacuole

A

Membrane-bound sac that stores food, water, and waste (larger in plant cells)

20
Q

Lysosome

A

Enzyme containing organelle that breaks down old cell parts

21
Q

Centrioles

A

An organelle found in animal cells that contains spindle fibers for cellular reproduction

22
Q

Cell Wall

A

Rigid structure made of cellulose used to support and protect plants and prokaryotic cells

23
Q

Chloroplast

A

Produces food for plant cells; the site of photosynthesis

24
Q

Cellulose

A

A polysaccharide that plants use to build cell walls for support

25
Q

Specialization

A

Once a cell has a structure it can use to carry out a specific function/job

26
Q

Differentiation

A

Genes are turned on and off to give a cell a unique structure

27
Q

Activation

A

Genes in a cell are turned on and off to allow for unique structure and functions

28
Q

Stem cell

A

An undifferentiated and unspecialized cell that can turn into any type of cell

29
Q

Structure

A

The shape

30
Q

Function

A

The job

31
Q

Cell signaling

A

Allows cells to respond to their environment and communicate with other cells based on chemical and protein signals