Biology Test 3 - Cells

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Why will external fluid flow into a plant cell?

- because the external salt concentration is less and the external water concentration is greater

List the Four Organ Systems which are operational in an amoeba.

- digestion - excretion - reproduction - respiration

Define: Organismal Theory

A functioning organism represents life

Define: Cytoplasm

All cellular material outside the nucleus

What gas diffuses passively out of the cell during cellular respiration?

Carbon dioxide (CO2)

Define: Nucleus

Control center of the cell

Define: Plasma Membrane

Controls what comes into and goes out of the cell

Define: Cell Theory

Each cell possesses a life of its own

True False: The taxonomic classification of all organisms is certain.

False

True or False Ribosomal RNA is produced in the cytoplasm.

False

True or False Simple cell division of both plants and animals is an identical process.

False

True or False Current scientific methods can conclusively distinguish between all microorganisms

False

Define: Organism

Functional plant or animal

Define: Vacuole

Large storage structures

Define: Cell Wall

Outer covering around plant cell made of fibrous material

What gas diffuses passively into the cell during cellular respiration?

Oxygen (O2)

Define: Nucleolus

Small structure(s) within nucleus

True or False The simplest operational cell is still more complex than a computer.

True

The plasma membrane of a human cell:

acts as a selective gatekeeper

Define: Epidermis

an outer covering of cells

What can some leukocytes absorb by the process of phagocytosis?

bacteria

According to the Cell Theory, what is the basic unit of life?

cell

The natural tendency of molecules to move from higher to lower concentration is:

diffusion

a leukocyte is responsible for:

fighting disease by phagocytosis or antibody production

Which way will water flow for the following external solutions?

hypertonic: out of the cell

What characteristic is completely unique about DNA?

it contains coded information

The relative concentration of water in a hypertonic solution is

low

The Krebs cycle takes place within the:

mitochondria

According to the organismal Theory, what is the basic unit?

organism

Any functional plant or animal with interrelated parts is considered as a(n)

organism

Which statements describe organisms referred to as "colonial"?

similar bacteria or protozoa which group together


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