Cels Lecture 1

Question 1

Eukarya characteristics

Answer 1

Nuclear envelope, membrane enclosed organelles

Question 2

Archaea characteristics

Answer 2

Circular chromosomes, some species grow at temp>100C

Question 3

Bacteria characteristics

Answer 3

Peptidoglycan in cell wall, circular chromosome

Question 4

How does life behave?

Answer 4

Cellular organization, reproduction, metabolism, homeostasis, heredity, response to stimuli, growth and development, adaptation through evolution

Question 5

Generation of complex bio molecules due to

Answer 5

Complex early atmosphere, deep sea hydrothermal events

Question 6

Generation of replicating organisms via

Answer 6

An RNA world, chelation by mineral clays

Question 7

Panspermia

Answer 7

Life from space

Question 8

Measure cells and organelles

Answer 8

Micrometers (microns) 10^-6 m

Question 9

Measure components of cells

Answer 9

Nanometers (nm) 10^-9 m

Question 10

Evolution

Answer 10

When organisms have variation and pass on their traits in differing proportions

Question 11

Natural selection

Answer 11

Mechanism for evolution - VIST- variation, inheritance, selection, time

Question 12

Phylogenetic trees

Answer 12

Show divergence from common ancestor based on characteristics(physical or sequence information from biological molecules

Question 13

Endosymbiosis theory

Answer 13

Mitochondria and chloroplasts (in that chronological order) derived from domesticated bacteria

Question 14

Mitochondria derived from:

Answer 14

Proteobacteria

Question 15

Chloroplasts derived from:

Answer 15

Cyanobacteria