Lab-Chapter 2

Question 0

Nucleus-

Answer 0

Contains DNA that has all the instructions for building the entire body

Question 1

Plasma membrane-

Answer 1

Selectively permeable, lipid-based barrier, enclosed and separates cell’s internal environment from external environment

Question 2

Nucleolus-

Answer 2

1 or more dark spots in nucleus, site where ribosomes are assembled

Question 3

Cytoplasm-

Answer 3

All cell components extending from outside of nucleus to inside of plasma membrane, consist of cytosol, organelles, inclusions

Question 4

Smooth Endoplasmic Reticulum:

Answer 4

Metabolism of lipids and carbohydrates; drug detoxification

Question 5

Rough ER:

Answer 5

Cell’s membrane factory, important in protein synthesis

Question 6

Golgi Apparatus:

Answer 6

UPS of cell, packages proteins for specific destinations

Question 7

Ribosome:

Answer 7

Site of protein synthesis, attach to rough ER

Question 8

Mitochondrion:

Answer 8

Captures heat to produce ATP

Question 9

Lysosome:

Answer 9

Contains digestive enzymes; plentiful in phagocytes

Question 10

Peroxisome:

Answer 10

Detoxes poisons & disarms free radicals

Question 11

Centrioles:

Answer 11

Plays a roll in cell division

Question 12

Cytoskeleton:

Answer 12

Network of various strong string-like proteins that give shape and support to cell

Question 13

Microvilli:

Answer 13

Tiny, finger-like extensions of plasma membrane

Question 14

Cilia:

Answer 14

Whip-like cellular extensions that move substances along cell surface

Question 15

Flagella:

Answer 15

Projections formed by centrioles that are very long

Question 16

4 main types of tissue:

Answer 16

Epithelial
Muscular
Nervous
Connective

Question 17

Epithelial Tissue-

Answer 17

• Single row cells, tightly packed together, exposed surface, bound surface(usually adipose tissue underneath and muscle beneath that)
• Line hollow organs; skin

Question 18

Muscle Tissue:

Answer 18

• Contract to produce movement, layers of cells packed together
• Smooth muscle-organs
• Skeletal muscle-bones
• cardiac muscle-heart

Question 19

Nervous Tissue-

Answer 19

Star-shaped, brain, spine, nerves

Question 20

Connective Tissue:

Answer 20

• Packing, attachment, cushion, warmth, protection, support. Most varied and abundant tissue.
• Tendons, ligaments, cartilage, bone, blood

Question 21

Collagen fibers:

Answer 21

White, High textile strength

Question 22

Elastic fibers:

Answer 22

Yellow, can stretch and recoil

Question 23

Reticular fibers:

Answer 23

Form internal “skeleton” of soft organs