Biology Unit 2

0.0(0)
studied byStudied by 6 people
learnLearn
examPractice Test
spaced repetitionSpaced Repetition
heart puzzleMatch
flashcardsFlashcards
Card Sorting

1/20

encourage image

There's no tags or description

Looks like no tags are added yet.

Study Analytics
Name
Mastery
Learn
Test
Matching
Spaced

No study sessions yet.

21 Terms

1
New cards

Transport Protein Function

Functions include cell-cell recognition, enzymatic activity, signal transduction, intercellular joining, and attachment for extracellular matrix.

2
New cards

Microtubules

The largest cytoskeletal components made up of tubulin, involved in the structure of centrioles, cilia, and flagella.

3
New cards

Microfilaments

The smallest cytoskeletal components composed of actin, involved in cytokinesis, muscle contraction, and formation of pseudopodia.

4
New cards

Small Nonpolar Molecules

Molecules that can cross cell membranes easily.

5
New cards

Polar Unchanged Molecules

Molecules that can pass through membranes in small amounts.

6
New cards

Hydrophobic Core

A membrane feature that prevents the passage of ions and large polar charged molecules.

7
New cards

Hypotonic

A solution condition where cells are lysed and turgid due to water influx.

8
New cards

Isotonic

A solution condition where cells are flaccid, with no net movement of water.

9
New cards

Hypertonic

A solution condition where cells are plasmolyzed due to water loss.

10
New cards

Cotransports

A type of secondary active transport that uses energy from an electrochemical gradient to move two different ions across a membrane.

11
New cards

Sumport

A transport mechanism where two different ions are moved in the same direction.

12
New cards

Antiport

A transport mechanism where two different ions are moved in opposite directions.

13
New cards

Membranes become polarized when

Ions move across them, creating a charge difference.

14
New cards

Osmolarity

The total solute concentration in a solution.

15
New cards

Tonicity

A measurement of the relative concentration of solute between two solutions.

16
New cards

Osmoregulation

The process that maintains water balance and controls internal solute composition.

17
New cards

Plasmolysis

A condition where there is less cellular solute and more cellular water potential.

18
New cards

Gap Junctions

Cytoplasmic channels that provide direct communication between adjacent cells.

19
New cards

Desmosomes

Structures that function like rivets, fastening cells together into strong sheets, anchored by intermediate filaments.

20
New cards

Tight Junctions

Connections where plasma membranes of neighboring cells are tightly pressed against each other to prevent leakage.

21
New cards

Extracellular Matrix (ECM)

A network of glycoproteins and other carbohydrate-containing molecules secreted by cells.