Cell Structure and Function Flashcards Preview

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Flashcards in Cell Structure and Function Deck (47):
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Basic function of plasma membrane:

Controls movement of substances into and out of the cell

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Basic function of nucleus:

Contains DNA molecules and Nucleolus

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Basic function of centrioles:

A.k.a. Cenrosomes. Form mitotic spindle, needed to form cilia and flagella

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Basic function of chromatin:

Long thin strands within nucleus. Each strand composed of one DNA molecule and associated proteins.

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Basic function of cytoplasm:

Area of the cell that includes the cytosol and organelles

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Basic function of cytosol:

Fluid portion of the cytoplasm that surrounds organelles

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Basic function of organelles:

Varies. Organelles are everything in the cytoplasm except the nucleus and the cytosol.

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Basic function of mitochondria:

Makes ATP via aerobic cellular respiration

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Basic function of nucleolus:

Assembly site for ribosomes

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Basic function of ribosomes:

Site of protein synthesis

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Basic function of lysosomes

Enzymes digest and recycle worn out organelles and substances entering the cell ( can digest the cell)

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Basic function of cytoskeleton:

Three kinds of protein filaments, maintain cell shape and involved in cell movement and movement of organelles

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Basic function of cilia:

Abundant, hair-like cell projections that move fluids and particles along the cell surface

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Basic functions of flagella:

Long cell projections; whip-like motion moves sperm

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Define Term: interphase

When the cell is not dividing, but carrying out its normal activities

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Define term: mitotic phase

When the cell is engaged in cell division

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Define term: Mitosis

The process of cell division, specially, the nucleus dividing into two

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Define Term: cytokinesis

The process by which the cytoplasm is split into two new cells to complete cell division

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Define Term: prophase

Nucleolus and nuclear membrane disappear, chromatin condenses into chromosomes, centrioles move to opposite poles, spindle fibers form. STAGE 1.

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Define Term: Metaphase

Chromosomes line us at metaphasal plate, spindle fibers attach to centromeres of chromatids. STAGE 2.

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Define Term: Anaphase

Chromatids of chromosomes separate, move to opposite poles. STAGE 3.

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Define Term: Telophase

Cell reverse prophase activities. FINAL STAGE.

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Find: Mitochondrion

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#1

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Find: Peroxisome

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#2

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Find: Smooth Endoplasmic Reticulum

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#3

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Find: Lysosome

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#4

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Find: Plasma Membrane

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#5

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Find: Centrioles

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#6

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Find: Microvillus

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#7

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Find: Flagellum

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#8

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Find: Cilium

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#9

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Find: Secretory Vesicle

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#10

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Find: Chromatin

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#11

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Find: Nuclear Membrane

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#12

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Find: Nucleolus

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#13

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Find: Nucleus

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#14

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Find: Cytoplasm

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#15

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Find: Rough Endoplasmic Reticulum

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#16

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Find: Ribosome

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#17

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Find: Golgi Complex

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#18

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Define the phase of cell division

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Telophase (also cytokinesis). Nuclear envelopes and nucleoli reappear; chromosomes resume chromatin form; mitotic spindle disappears.

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Define the phase of cell division

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Metaphase. Centromeres of chromatid pairs line up at metaphase plate.

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Define the phase of cell division

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Anaphase. Centromeres split; identical sets of chromosomes move to opposite poles of cell.

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Define the phase of cell division

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Prophase. Chromatin fibers condense into paired chromatids; nucleolus and nuclear envelope disappear; each centrosome moves to an opposite pole of the cell.

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Define the phase of cell division

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Interphase. Period between cell divisions; chromosomes not visible under light microscope.

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What is the order of phases in Mitosis?

1. Interphase -- pre-mitotis.

2. Prophase

3. Metaphase

4. Anaphase

5. Telophase

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