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Flashcards in lecture 3 Deck (16):
1

what is variability?

many kinds of organisms within each kind of organism

2

what is stability?

within kinds of organisms

3

When was the microscope developed? & what was observed?

1600s. cells

4

When was the nucleus first viewed?

1700s

5

When were staining procedures developed? what was viewed for first time?

1800s. chromosomes

6

when was the cell theory developed?

early 1900s

7

When was DNA discovered?q

late 1900s

8

are chromosomes Eukaryotic or prokaryotic?

eukaryotic

9

describe DNA

long thread-like molecules tightly coiled into chromosomes

10

how many chromosomes do humans have?

46

11

what are genes?

specific regions of DNA located linearly on specific chromosomes (hundreds of thousands of genes per chromosome

12

what are haploid cells?

one of each kind of chromosome

13

What are diploid cells?

2 of each kind of chromosome

14

What is cytokinesis?

cell division

15

what are methanogens?

make up most of Earth's atmosphere (co2+h2

16

what percentage of methane gas is from rhewmanins?

30%