Ex 4: Cell Structure and Cell Cycle Flashcards Preview

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Flashcards in Ex 4: Cell Structure and Cell Cycle Deck (36)
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1

What does the Plasma Membrane do?

controls movement of substances into and out of the cell

2

What folds of the plasma membrane that increase the surface area of the cell to increase absorption or secretion?

Microvilli

3

What contains DNA molecules and nucleous?

Nucleus

4

What is the assembly site for ribosomes

Nucleous

5

What are the long thin strands within nucleus. Each stand composed of one DNA molecule and associated proteins.

Chromatin

6

What is the area of the cell between plasma membrane and nucleus? Includes cytosol and organelles

Cytoplasm

7

What is the fluid portion of cytoplasm that surrounds organelles?

Cytosol

8

What makes ATP via aerobic cellular respiration?

Mitochondria

9

What is the site of protein synthesis?

Ribosomes

10

What processes and transports proteins made at attached ribosomes; synthesizes phospholipids?

Rough endoplasmic reticulum (RER)

11

Fatty acid and steroid synthesis; detoxifies toxic substances

Smooth endoplasmic reticulum (SER)

12

What receives and modifies proteins from RER; sorts and transports them?

Golgi complex

13

What secretes substances outside the cell by exocytosis?

Secretory vesicles

14

Where do enzymes digest and recycle work-out organelles and substances entering the cell; can digest the cell

Lysosomes

15

What produce hydrogen peroxide; detoxify harmful substances?

Peroxisomes

16

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

Cytoskeleton

17

Form mitotic spindle; needed to form cilia and flagella

Centrosomes (centrioles)

18

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

Cilia

19

What is a long cell projection; whip-like motion moves sperm

Flagella

20

What types of cells are:

Long, cylindrical cells that contain specialized proteins that enable them to contract to move bones. The contractile proteins are organized into repeating units that can be observed in the light microscope as striations.

Skeletal muscle

21

What do you call something that's covered in microscopic projections that look like tiny hairs. _______ cells use a sweeping motion to remove toxins from your lungs.

Ciliated / Ciliated cells

22

In a cell, what increases the surface area of the plasma membrane which provides a larger area for absorption of nutrients along the gastrointestinal tract or secretion of product from glands?

Microvilli

23

What are nervous tissue cells with many processes that receive info from other neurons and send electrical signals to muscle cells causing them to contact?

Motor neurons

24

What type of cells are:

Small, oval cells with a flagellum that propels them through the female reproductive tract?

Sperm Cells

25

What type of cells:

Do not have a nucleus but contain large amounts of hemoglobin, a red pigment that binds oxygen?

Red blood cells

26

What type of cells:

Have nuclei with different shapes and defend the body from pathogens and cancerous cells.

White blood cells

27

What is it called when one cell divides to produce 2 genetically identical cells?

Somatic cell division

28

The cell cycle begins when _________, and ends when ________.

a cell is produced by cell division, when that cell divides.

29

What is the Interphase of the cell cycle?

Long period when the cell lives and grows. DNA replicates. (inter= between)

30

What is the Mitotic phase of the cell cycle?

When the cell is dividing (this includes mitosis, which is nuclear division) (also includes cytokinesis, which is cytoplasmic division)