Ch. 7 Sec. 1/2 Vocab Flashcards Preview

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Flashcards in Ch. 7 Sec. 1/2 Vocab Deck (20):
1

Cell theory

All living things made of cells,
All cells come from other cells,
Cells are basic unit of structure and function

Fundamental concept of biology

2

Nucleus

Large membrane enclosed structure that contains DNA.

"The brain" control center

3

Eukaryotes

Cells that contain nuclei

4

Prokaryotes

Cells that do not contain nuclei

5

Organelle

Small parts in a cell that act as little organs

6

Cytoplasm

The portion of the cell outside the nucleus

"Jelly like" fluid

Where organelles are located

7

Nuclear envelope

What the nucleus is surrounded by which is composed of two membranes

Contains nuclear pores that regulate exit and entrance of materials

8

Chromatin

The general material you can see in the nucleus

Makes chromosomes

DNA and protein

9

Chromosomes

Distinct, threadlike structures containing genetic information that is passed from one generation of cells to the next.

Makes of DNA

CONDENSED CHROMATIN

10

Nucleolus

Where the assembly of ribosomes begins

Contain RNA and protein

11

Ribosomes

Small particles of RNA and protein found throughout the cytoplasm

Attached to rough ER or free floating in cytoplasm

Site of protein synthesis

Made of RNA and protein

12

Endoplasmic reticulum

An internal membrane system in eukaryotic cells

Tubelike network connected to nucleus

Transports proteins, assembles lipids

Rough/Smooth

13

Golgi apparatus

Where proteins move after being produced in the rough ER

Manufactures, modifies, collects, and sorts packages and distributes molecules.

14

Lysosomes

Small organelles filled with digestive enzymes

"SUICIDE SACKS"

Digest proteins, lipids and carbs into useable small particles

Enzymes kill bacteria and other invaders

Recycles old cell parts

Made by the Golgi

Linked to diseases like like TAY Sachs when fails


15

Vacuoles

Saclike structures that store materials such as water, salts, proteins, and carbohydrates

Stores water food and minerals

Vesicles pump out excess water and maintain homeostasis

Maintains central pressure in plants

16

Mitochondria

Organelles that convert the chemical energy stored in food into compounds that are better for cell use

POWERHOUSE

Generates energy

Two membranes

Own DNA

17

Chloroplasts

Organelles that capture the energy from sunlight and convert into chemical energy through photosynthesis

Contain chlorophyll

2 membranes

Endosymbiosis relationship

18

Cytoskeleton

A network of protein filaments that helps the cell to maintain its shape

"FRAMEWORK"

Structure and support

Move cell/organelles

Microtubules

Centrioles, flagella, cilia

19

Centrioles

Located near the nucleus and help to organize cell division

Move chromosomes during cell division

Mad sod protein

Only in animal cells

20

Cell

Basic unit of life