Chapter 7: Cell structures and Function Study for Finals

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Electron microscopes can reveal details

1000 times smaller than those visible in light microscopes

Which part of the cell stores materials such as water, salt, proteins, and carbohydrates

Vacuole

You will NOT find a cell wall in which kind of organism

animals

what is endocytosis?

process where the cell takes in materials that are too large to pass through

Which of the following is a function of the cell membrane

regulates the movement of materials in and out of the cell

Which structure makes proteins using coded instructions that come from the nucleus

ribosomes

Which type of microscope can produce three-dimensional images of a cell's surface

scanning electron microscope

The primary function of the cell wall is to

support and protect the cell

Which of the following structures serves as the cell's boundary from its environment

the cell membrane

A group of similar cells that perform a particular function is called

tissue

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

water to move into the cell

An organ system is a group of organs that

work together to perform a specific function

Which term describes the relatively constant internal physical conditions of an organism?

homeostasis

The diffusion of water across a selectively permeable membrane is called

osmosis

Not all cells are alike. Which of the following is NOT a true statement about differences between cells

Most cells have a membrane, but some do not

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

Robert Hooke

Which structure in the cell shown above modifies sorts, and packages proteins and other materials for storage or release from the cell

The Golgi Apparatus

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

The cell lacks a nucleus

Which of the following statements about the nucleus is NOT true

The nucleus is the site of protein assembly

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

active transport

What are the levels of organization in a multicellular organism from the most simple level to the most complex level

cell,tissue,organ,organ system

Which organelle would you expect to find in plant cells but not animal cells?

chloroplast

During diffusion, when the concentration of molecules on both sides of a membrane is the same, the molecules will...

continue to move across the membrane in both directions

Which type of cell encloses their DNA in a nucleus?

eukaryotic cell

Which of the following is a function of the cytoskeleton

it helps a cell keep its shape

Which of the following is a function of the nucleus

it stores DNA

Which organelle breaks down organelles that are no longer useful?

lysosomes

Which organelles are involved in energy conversation

mitochondria and chloroplasts

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

mitochondrion


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