Chapter 12 - Eukaryotes

Question 1

Mitosis vs Meiosis

Answer 1

mitosis is asexual;

meiosis is sexual (2 stages)

Question 2

Mitosis

Answer 2

• cell partition that replicate DNA equally bw 2 nuclei

- pro, meta, ana, telophase

Question 3

Meiosis

Answer 3

2 stages: meiosis I + II
-nuclear division that partitions chromatids into 4 nuclei

-each stage has 4 phases

Question 4

Cytokinesis

Answer 4

• cytoplasmic division

- occurs during TELOPHASE

Question 5

Protozoa

Answer 5

• very few are pathogens

- eukaryotic, unicellular, lack cell wall

Question 6

Fungi

Answer 6

• chemoheterotroph
• 30% cause disease of plants, animals, + humans
• related to animals
• cell walls are made of CHITIN

Question 7

fungi cell wall

Answer 7

chitin

Question 8

significance of Fungi

Answer 8

• decompose dead organisms + recycle nutrients
• help plants absorb water + minerals
• used for food + bev
• produce antibiotics + other drugs
• important research tool
• can spoil fruit, pickles, jams, jellies

Question 9

fungi metabolism

Answer 9

• acquire nutrients by absorption
• most are SAPROBES
• most are aerobic
• many yeasts are facultative anaerobes

Question 10

Saprobes

Answer 10

lives + feeds on dead organic matter

Question 11

Water molds

Answer 11

• differ fr fungus
• decompose dead animals + return nutrients to the environment
• type of saprobes

Question 12

Arachnid

Answer 12

• vector
• 4 pairs of legs
• ticks are the most important arachnid vector

Question 13

most prominent tick vector

Answer 13

hard ticks

Question 14

insects

Answer 14

• vector
• adult insects have 3 pairs of legs and 3 body regions
• includes MOSQUITOS, lice, flies, fleas, kissing bugs

Question 15

most important arthropod vectors of disease

Answer 15

mosquitos

Question 16

arthropods

Answer 16

insects