Unit 1: Diversity of Life

Question 1

Nucleus

Answer 1

stores & protects DNA

Question 2

Legless lizard & snake, caecilian (amphibian, breathes thru skin)

Answer 2

shared an ancestor over 20mil yrs ago, but are similar because of their living environment. has long-tub shape bcs lived underground

Question 3

Convergent Evolution

Answer 3

species have similar characteristics/adaptions due to similar environments

Question 4

Plasma Membrane

Answer 4

phospholipid bilayer: keeps organelles in place, lets things n and out, protective

Question 5

Rough ER

Answer 5

Covered in ribosomes, works with Golgi to create new organelles

Question 6

Smooth ER

Answer 6

Makes lipid in its special environment

Question 7

Ribosomes

Answer 7

are on the Rough Er, makes proteins

Question 8

Cytoplasm

Answer 8

plasm of the cell- includes everything in the cell

Question 9

Cytosol

Answer 9

fluid/solution around organelles

Question 10

Mitochondria

Answer 10

powerhouse of the cell- convert glucose to energy, provides the cell with energy

Question 11

Lysosomes

Answer 11

recycling system: break down old organelles so they can be reused

Question 12

Cytoskeleton

Answer 12

Long proteins that provide structure/shape to the cell,
(tracks) Transportation

Question 13

Tight Junction

Answer 13

staple one cell to another so things can not pass thru it. Keeps skin from leaking, heart from leaking blood, lungs not filled w water.

Question 14

Gap Junction

Answer 14

protein structures that go from one cell to another so cells can communicate

Question 15

Carbohydrates

Answer 15

Energy storage or structural.
Glucose: energy storage
Starch: energy storage
Cellulose (fiber): structure, harder to break down
Glycogen: energy storage in muscle/liver
Chitin: used for insect exoskeleton

Question 16

Nucleic Acid

Answer 16

DNA & RNA: store info on how to make/operate organism (hair color, height,repair bones)

Question 17

Proteins

Answer 17

do work & enzymes that make chemical reactions happen

Question 18

Lipids

Answer 18

Hormones (signal molecules; cholesterol,testerone), Fats: energy storage, nonpolar

Question 19

DKPCOFGS

Answer 19

Domain, Kingdom,Phylum, Class, Order, Genus, Species

Question 20

1. Phylum

Answer 20

Porifera: sponges, suspension feeders, stationary

Question 21

2. Phylum

Answer 21

Cnideria: jellyfish, stinging cells, radically symmetrical, digestive layer

Question 22

4. Phylum

Answer 22

Annelida: earthworm/leech, segmented body, repeated organs, closed circulatory

Question 22

3. Phylum

Answer 22

Mollusca: clams/squids/octopus: have mantle & foot, open body cavity, open circulatory

Question 23

5. Phylum

Answer 23

Arthropoda: (insects, lobster, barancles) exoskeleton w joint appendages, segmented body,

Question 24

6. Phylum

Answer 24

Echinodermata: (starfish/sea urchin) symmetrical, external spine, internal skeleton, regenerate lost parts

Question 25

7. Phylum

Answer 25

Chordata: (mammals), Dorsal hollow nerve cord, post-anal tail, notochord

Question 26

Chordata (Hagfish)

Answer 26

Hagfish: skull with no jaw, no vertebral column, eye spots

Question 27

Chordata (Lamprey)

Answer 27

Cartilaginous backbone, No jaws, can see images

Question 28

Chordata (Tunicates)

Answer 28

Tunicates: suspension feeder, no brain or tail

Question 29

Chordata (Cartilaginous Fish)

Answer 29

Sharks/Rays: Cartilaginous skeleton,electrical sense organs, lateral lines (pressure sensing)

Question 30

Chordata (Bony Fish)

Answer 30

Salmon/Trout: bone skeleton, ray fins, Operculum for gills

Question 31

Chordata (Lobe Finned Fish)

Answer 31

Lung Fish: lobe shaped fins, bony, have rod shaped bones in fins

Question 32

Chordata (Amphibians)

Answer 32

Frogs: found in wet habitats, breath thru skin, lay eggs, require water for reproduction

Question 33

Chordata (Reptiles)

Answer 33

Lizard/Turtle: keratin skin/scales, ectothermic (coldblooded), lay eggs

Question 34

Chordata (Aves)

Answer 34

Birds: endothermic (warmblooded), lay eggs, have feathers

Question 35

Chordata (Mammals)

Answer 35

Dogs/Humuns: endothermic, have hair, mammary gland (produce milk)