Description/Structure of organelles

Question 1

Nucleus

Answer 1

Surrounded by double membrane (nuclear envelope) with nuclear pores. Contains nucleolus

Question 2

Plasma Membrane

Answer 2

Phospholipid bilayer that contains cholesterol and proteins

Question 3

Nucleolus

Answer 3

Round body inside nucleus- not surrounded by a membrane

Question 4

R.E.R

Answer 4

Connected flattened disks studded with ribosomes. Held together by cytoskeleton

Question 5

Golgi Apparatus

Answer 5

Complex membrane system of membrane bound stacked pouches in cytoplasm

Question 6

Lysosomes

Answer 6

Membrane bound organelle containing digestive enzymes

Question 7

S.E.R

Answer 7

Connected flattened membrane disks found in cytoplasm

Question 8

Ribosomes

Answer 8

Found within cytoplasm or attached to R.E.R. Made up of rRNAs and ribosomal protein molecules

Question 9

Mitochondria

Answer 9

Rod shaped structures with folded inner membranes found in cytoplasm. Contains own ribosomes and DNA.

Question 10

Chloroplast

Answer 10

Contain stacks (grana) of thylakoids (membranes) which contain photosynthetic pigments.

Question 11

Permanent Vacuole

Answer 11

Surrounded by a membrane known an tonoplast

Question 12

Centrioles

Answer 12

Pair of organelles composed mainly of a protein called tubulin.
Absent from higher plants
Found in 9:2 arrangement in animal cells

Question 13

Cytoplasm

Answer 13

Highly viscous

Composed of about 85% water, proteins, salts, and other substances

Question 14

Vacuole

Answer 14

Larger from of a vesicle
Enclosed compartments
Shape and size vary depending on cell’s requirements

Question 15

Cell Wall

Answer 15

Plants: cellulose (polysaccharide)
Prokaryotes: peptidoglycan- or murein?

Question 16

Cytoskeleton

Answer 16

microtubules, microfilaments, intermediate filaments