7.4 flashcards

Question 1

explain the Cytoplasm

Answer 1

Cytoplasm is the gelatinous liquid that fills the inside of a cell. It is composed of water, salts, and various organic molecules. Some intracellular organelles, such the nucleus and mitochondria, are enclosed by membranes that separate them from the cytoplasm.

Question 2

explain Cytoskeleton

Answer 2

The cytoskeleton of a cell is like the skeleton of our bodies. It lets a cell keep its shape, move around, and change shape, and it allows organelles to move around. The cytoskeleton is made of proteins called microfilaments, microtubules, and intermediate filaments.

Question 3

what are Ribosomes how do they work

Answer 3

Ribosomes are organelles that manufacture proteins.
Not membrane-bound like other organelles
Produced inside the nucleus in the nucleolus

Question 4

what are the functions Endoplasmic reticulum

Answer 4

is a membrane system of folded sacs and interconnected channels that serves as the site for protein and lipid synthesis.

Question 5

what is the function of Golgi apparatus

Answer 5

s a flattened stack of membranes that modifies, sorts, and packages proteins.

Question 6

what is Vacuole purpose

Answer 6

A vacuole is a membrane bound sac used for temporary storage.

Question 7

what dose Lysosomes do

Answer 7

Lysosomes are vesicles that contain substances that digest excess or worn-out organelles and food particles.
They also digest bacteria or viruses that invade the cell.

Question 8

what is the purpose of the Mitochondria

Answer 8

convert fuel particles into usable energy.
They have an outer membrane and a highly folded inner membrane that provides surface area for breaking the bonds in sugar molecules.

Question 9

an example of chloroplast

Answer 9

They are composed of multiple small disks called thylakoids, which contain the light capturing pigment chlorophyll.

Question 10

what do you know about the cilia and the Flagella

Answer 10

Flagella are longer and less numerous than cilia.
Move with a whip-like motion
Both are made of microtubules.

Question 11

Procariotic VS. eurcariotic cells

Answer 11

eukaryotic cells have a distinct nucleus containing the cell’s genetic material, while prokaryotic cells don’t have a nucleus and have free-floating genetic material instead.