Cellular Biology Flashcards Preview

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Flashcards in Cellular Biology Deck (24):
1

Cell Theory states...

-All living things composed of cells, basic functional unit of life
-Chemical reactions of life occur in cells
-Arise from preexisting cells
-Carry genetic info as DNA

2

What displays selective permeability?

Cell Membrane

3

Where does rRNA synthesis occur?

Nucleolus

4

What is function of smooth ER?

-Metabolism/detox drugs and poisons
-Production of lipids including steroid hormones
-Stores Ca++ ions in muscles cells

5

Where does most metabolism take place?

Cytoplasm

6

Cyclosis

Streaming movement in cell --> transport

7

Centrioles

-Not bound by membrane
-Located in centrosome region
-NOT in plants

8

Autolysis

Injured/dying cell ruptures lysosomes to self-destruct

9

Microtubules

-Hollow rods of tubulin
-Compose centrioles, cilia, flagella

10

Microfilaments

-Solid rods of actin
-Move materials across plasma membrane in contraction phase of cell division

11

Endocytosis

-Bring in large volumes of extracellular material

12

Pinocytosis

-Ingestion of fluids/small particles

13

Phagocytosis

-Engulfing large particles

14

Exocytosis

-Fusion of vesicle with cell membrane and release of large volume

15

Does material pass through cell membrane in endocytosis or exocytosis?

NO

16

Intracellular circulation...

-Brownian movement (KE spreads small particles)
-Cyclosis (streaming by circular motion)
-ER (continuous passageway from plasma membrane to nuclear membrane)

17

Prophase

-Chromosomes condense
-Centrioles separate and move to opposite poles
-Spindle apparatus forms
-Nuclear membrane dissolves

18

Metaphase

-Centrioles at opposite poles
-Fibersattach at kinetochore
-Metaphase plate

19

Anaphase

-Centromeres split
-Sister chromatids separate and pulled to opposite poles by shortening fibers

20

Telophase

-Spindle apparatus disappears
-Nuclear membrane forms
-Each nucleus is diploid and chromosomes uncoil

21

Cytokinesis

-Near end of telophase
-Cleavage furrow (animal) cell plate (plants)

22

Which stage is responsible for Law of Independent Assortment?

Anaphase I

23

Where does cellular respiration occur in prokaryotes?

Cell membrane

24

How many functional gametes are formed in women during meiosis?

1