Cell Structure and Function TEST

Using a microscope, how can you tell that a cell is a prokaryote?

• the cell lacks a cytoplasm

• the cell lacks a nucleus

• the cell lacks a cell membrane

• the cell lacks genetic material

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

• facilitated diffusion

• passive transport

• active transport

• osmosis

Which is NOT a principle in the cell theory?

• cells are the basic units of life

• all living things are made from cells

• all cells are produced from other living cells

• very few cells are able to reproduce

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

• Robert Hooke

• Anton van Leeuwenhoek

• Matthias Schleiden

• Rudolf Virchow

Which represents the levels of organization in a multicellular organism in order?

• cell, tissue, organ system, organ

• cell, tissue, organ, organ system

• tissue, organ, organ system, cell

• organ system, organ, cell, tissue

Diffusion occurs because

• cellular energy pumps molecules across a membrane

• molecules are attracted to one another

• molecules constantly move and collide with one another

• cellular energy forces molecules to collide

The cells of unicellular organisms are

• specialized to perform different tasks

• unable to respond to changes in their environment

• are larger than those of multicellular organisms

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

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

• water to move into the cell

• water to move out of the cell

• solutes to move into the cell

• solutes to move out of the cell

Which of the following is NOT found in the nucleus?

• nucleolus

• chromatin

• DNA

• mitochondria

The movement of materials against a concentration gradient

• passive transport

• diffusion

• facilitated diffusion

• active transport