Chapter 7: Cell structures and Function Study for Finals
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