Chapter 3: Cellular Level Of Organization

Question 1

Plasma membrane

Answer 1

Flexible outer boundary

Question 2

Cytoplasm

Answer 2

Intracellular fluid (cytosol), containing organelles

Question 3

Nucleus

Answer 3

DNA containing control center with chromosomes and genes

Question 4

Cytoskeleton

Answer 4

Provide cell shape and organization. Includes microfilaments, microtubules, and intermediate filaments

Question 5

Centrosome

Answer 5

Microtubule organizing center

Question 6

Centrioles

Answer 6

Pair of barrel shaped micro-tubular organelles at right angles to each other

Question 7

Cilia

Answer 7

Whiplike motile extensions on some cell surfaces. Move substances

Question 8

Flagella

Answer 8

Longerextensions to move the whole cell

Question 9

Microvilli

Answer 9

Increase surface area for absorption

Question 10

Ribosomes

Answer 10

Site of protein synthesis, consists of two subunits. Free ribosomes in free footing cytosol. Membrane bound ribosomes attached to ER

Question 11

Rough Endoplasmic reticulum

Answer 11

Synthesize proteins theatre secreted from the cell

Question 12

Smooth ER

Answer 12

Lipid metabolism, detoxification, glycogen to glucose, release of calcium

Question 13

Golgi complex

Answer 13

Modifies, concentrates, and packages proteins and lipids received from ER

Question 14

Lysosomes

Answer 14

Digest I jested bacteria, viruses, toxins, degrade nonfunctional organelles, metabolic functions break down and release glycogen and ca2

Question 15

Peroxisomes

Answer 15

Detoxifying substances that neutralizes toxins

Question 16

Proteasomes

Answer 16

Destroy unneeded, damaged, or faulty proteins, curs long proteins into smaller peptides

Question 17

Mitochondria

Answer 17

Produces atp via aerobic cell respiration, can divide

Question 18

Nucleus

Answer 18

Largest organelles, nuclear envelope, nucleoli, chromatin

Question 19

Nuclear envelope

Answer 19

Double membrane barrier enclosing the nucleoplasm, unclear pores allow substances in and out

Question 20

Nucleoli

Answer 20

rRNA synthesis and ribosome subunit assembly

Question 21

Chromatin

Answer 21

Arranged in nucleosides, help regulate gene expression, chromosomes condensed state helps protect fragile chromatin threads during cell division

Question 22

Plasma cell membrane

Answer 22

Flexible sturdy barrier that surrounds and contains the cytoplasm of the cell

Question 23

Functions of plasma membrane’s

Answer 23

1. Physical barrier
2. Selective permeability
3. Communication
4. Cell recovnition