Overview of Cell Structures

Question 1

Modern life forms are connected by an _____________.

Answer 1

Evolutionary History

Question 2

All living species evolved from _________ group of ancestors.

Answer 2

interrelated

Question 3

The three large domains are:

Answer 3

Bacteria
Archaea
Eukarya

Question 4

Based on similarities in ______________, living organisms are classified into three domains.

Answer 4

Ribosomal RNA

Question 5

How many years ago does the living organism, from which all currently living organisms descended, found?

Answer 5

3.5 billion years

Question 6

There is _______ striking similarities between the three domains.

Answer 6

6

Question 7

What are the striking similarities of the three domains?

Answer 7

DNA is used as the genetic material

All species use the same genetic code

mRNA encodes the information to produce proteins (Central Dogma)

tRNAs and ribosomes are needed to synthesize proteins

All living cells are surrounded by plasma membrane

Some metabolic pathways, such as glycolysis, are found in all domains.

Question 8

The Central Dogma of Cellular and Molecular Biology

Answer 8

DNA

Question 8

The three statements of Cell Theory

Answer 8

All organisms are composed of cells

Cells are the smallest units of living organisms

Cells arise only from pre-existing cells.

Question 9

2 Types of Cells

Answer 9

Prokaryotes

Eukaryotes