Biology II Exam 2

Which statement about bacteria is FALSE?

Bacteria are not cellular and are sometimes not classified as living organisms

The cell walls of fungi are composed of:

chitin

Members of the ____ are thought to have given rise to animals.

choanaflagellates

Members of the ____ are thought to have given rise to plants.

green algae

What is a prophage?

it is phage DNA that is integrated into viral DNA

Dikaryotic cells are denoted as _____ rather than _____ because there are two separate haploid nuclei in one cell.

n+n; 2n

Although bacteria lack membrane-bound organelles, such as chloroplasts and mitochondria, they can still perform the functions of these organelles by localizing certain metabolic enzymes on:

plasma membrane

Most bacterial cells can keep from bursting in a hypotonic environment because of:

rigid cell wall

What is the protein coat of a virus called?

capsid

A ____ is a filament that makes up the vegetative body of most fungi.

hypha

Most fungal spores are ____ reproductive cells that are produced ____.

nonmotile: sexually or asexually

Which characteristic defines a virus?

viruses cannot metabolize

Prions are ___ that can cause disease like "Mad Cow Disease".

misfolded proteins

Which statement describes a temperate virus?

a temperate virus does not always destroy its host

Which of the following are rod-shaped bacteria?

bacilli

Which protist group is characterized by having a micronucleus and a macronucleus?

ciliates

Ascomytes do not include (c.f.)

club fungus

Which protist clade (supergroup) is characterized by their greatly modified mitochondria and oral groove?

excavates

Which Archaea have a name suggesting they are capable of living in environments with very high salt concentrations.

extreme halophiles

Most protists are ____, with each cell forming a complete organism capable of performing all the functions characteristic of life.

unicellular