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Flashcards in Chapter 1 pp Deck (18):
1

All of the chemistry and biomolecules we have discussed to this point are necessary but

insufficient on their own to support life.

2

cell theory?

all organisms are composed of cells
Cells are the basic units of structure and
function in organisms
Cells come only from preexisting cells
because cells are self-reproducing

3

the first cell formed about

3.8 billion years ago

4

how did the first cell come?

organic molecules
macromolecules
phospholipid bilayer
formed a protocell

5

when was the structure of DNA found? by who

April 1953
Drs. James Watson and
Francis Crick

6

when was the Human Genome Project
determined? what did it determine?

April 2003, determined the entire DNA
sequence of a human
(3 billion letters)

7

___in basic cell
structure and function
indicates that all cells
on earth today are
descended from an
ancient ancestral cell

Unity

8

small cells, not large cells, are likely to have an adequate _____ for exchanging wastes
for nutrients.

surface area

9

3 main events of the evolution of cells?

Common prokaryotic ancestor gave rise to bacteria and archaea ~3.5 bya

Eukaryotes arose ~2.7bya, apparently from a fusion between bacterial and archaeal cells.

Multicellular plants, animals and fungi developed from protists ~1- 2bya

10

____ as a group are one of the most abundant and diverse life-forms on earth

Prokaryotes

11

____ are the most well known
and studied prokaryotic cells

bacteria

12

Bacteria are found nearly EVERYWHERE on Earth
-Estimated to be over ___

5 billion trillion trillion organisms

13

what kind of diseases do bacteria cause?

Cause of serious disease
- such as tuberculosis,
anthrax, tetanus and
throat infections

14

Bacteria are also important to the environment because they

decompose the remains of dead organisms and contribute to ecological cycles.

15

eukarya have a ___ compared to prokaryotes that do not

cytoskeleton

16

eukaryotes are more restricted in their ____
than prokaryotes

metabolism, – only use
photosynthesis and/or cellular respiration.

17

eukaryotes undergo cell division by

(mitosis or meiosis)
very differently from prokaryotes (binary
fission).

18

ONLY eukaryotes can get together and
form

multicellular organisms.