_______ type of Bacteria that has acidic polysaccharides.

_______ type of Bacteria that has acidic polysaccharides.

Answer: Gram- positive

Scientists know that the first living organisms were _________. However, it is not known whether these organisms were ________ or ________

Scientists know that the first living organisms were _________. However, it is not known whether these organisms were ________ or ________

Answer: prokaryotic, autotrophic, heterotrophic

What features are possessed by all complex multicellular organisms?

What features are possessed by all complex multicellular organisms?

1. They begin from a single cell which produces daughter cells.
2. They have different types of specialized cells.
3. They are formed by cell division and adhesion.

Source of new genetic variation are:

Source of new genetic variation are:

- mutations within genes
- gene duplication
- horizontal gene transfer

Examples of new genetic variations include:

Examples of new genetic variations include:

- Natural selection
- Genetic drift
- Migration
- Nonrandom mating

How endosymbiosis relates to the eukaryote evolution?

How endosymbiosis relates to the eukaryote evolution?

Answer: makes each organelles in multicellular animals
ex: It is responsible for mitochondria

Amoeboid movement is carried out using structures called _________________

Amoeboid movement is carried out using structures called _________________

Answer: pseudopodia

Certain protists use a long whip-like structures called _______________ to swim.

Certain protists use a long whip-like structures called _______________ to swim.

Answer: flagella

Tiny hairlike structures called ________ are characteristic of certain protists.

Tiny hairlike structures called ________ are characteristic of certain protists.

Answer: cilia

The Gram-stain divides bacteria into two main types based on?

The Gram-stain divides bacteria into two main types based on?

A)presence/absence of a capsule
B)presence/absence of flagella
C)their cell wall structure
D)their cell membrane structure


Answer: C

In aquatic bacteria, hollow gas filled tubes which help in buoyancy, are called _________.

In aquatic bacteria, hollow gas filled tubes which help in buoyancy, are called _________.

Answer: gas vesicles

Bacteria and archaea are the Earth's?

Bacteria and archaea are the Earth's?

A)most ancient organisms
B)most recently derived organisms


Answer: A

________ are bacterial cells with unusually tough protein coats that are released upon the death of their parent cell.

________ are bacterial cells with unusually tough protein coats that are released upon the death of their parent cell.

Answer: endospores

Gram-negative bacteria have a thin peptidoglycan layer, and are enclosed by a thin outer envelope rich in _________________

Gram-negative bacteria have a thin peptidoglycan layer, and are enclosed by a thin outer envelope rich in _________________

Answer: lipopolysaccharides

The green algae that are most related to land plants are known as _____________ algae.

The green algae that are most related to land plants are known as _____________ algae.

Answer: streptophyte

The phylum _____________ includes flagellates known as cryptomonads.

The phylum _____________ includes flagellates known as cryptomonads.

Answer: cryptophyta

The phylum _____________ is known as red algae.

The phylum _____________ is known as red algae.

Answer: rhodophyta

The phylum _____________ includes most other green algae.

The phylum _____________ includes most other green algae.

Answer: chlorophyta

The supergroup ______________ includes the multicellular animals and fungal kingdoms and related protists.

The supergroup ______________ includes the multicellular animals and fungal kingdoms and related protists.

Answer: Opisthokonta

Which group of protists listed below is monophyletic?

Which group of protists listed below is monophyletic?

A)algae
B)protozoa
C)fungus-like protists
D)all of the above
E)none of the above


Answer: E