Chapter 7 Quiz

Who used a compound microscope to see chambers within cork and named them "cells"?

• Anton van Leeuwenhoek

• Rudolf Virchow

• Robert Hooke

• .Matthias Schleiden

Electron microscopes can reveal details

• about the different colors of cell structures

• only in specimens that are still alive

• 1000 times smaller than those visible in light microscopes.

• of cell structures only once they are stained.

Looking at a cell under a microscope, you note that it is a prokaryote. How do you know?

• The cell lacks a nucleus

• The cell lacks cytoplasm.

• The cell lacks genetic material.

• The cell lacks a cell membrane.

Which organelle breaks down organelles that are no longer useful?

• endoplasmic reticulum

• mitochondrion

• lysosome

• Golgi apparatus

Which organelle converts the chemical energy stored in food into compounds that are more convenient for the cell to use?

• mitochondrion

• endoplasmic reticulum

• chloroplast

• Golgi apparatus

Diffusion occurs because

• molecules constantly move and collide with each other

• molecules are attracted to one another

• cellular energy forces molecules to collide with each other

• cellular energy pumps molecules across the cell membrane.

An animal cell that is surrounded by fresh water will burst because the osmotic pressure causes

• water to move out of the cell

• water to move into the cell.

• .solutes to move into the cell

• solutes to move out of the cell.

Which means of particle transport requires input of energy from the cell?

• osmosis

• diffusion

• active transport

• facilitated diffusion

The cells of unicellular organisms are

• able to carry out all of the functions necessary for life

• specialized to perform different tasks.

• larger than those of multicellular organisms

• .unable to respond to changes in their environment.

Which list represents the levels of organization in a multicellular organism from the simplest level to the most complex level?

• cell, tissue, organ, organ system

• tissue, organ, organ system, cell

• cell, tissue, organ system, organ

• organ system, organ, tissue, cell