Chapter 7 Review Cells

Question? Cells are grouped into two categories. What is the main difference between the two groups?

Answer: Eukaryotes contain a nucleus and prokaryotes do not.

Question? Which organelle makes proteins using coded instructions that come from the nucleus?

Answer: Answer: ribosomes

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

Answer: mitochondrion

Question? What is a function of the cell membrane?

Answer: It regulates what comes in and out of the cell.

Question? Which organelles are unique to plant cells?

Answer Choloroplast, cell wall

Question? Which organelle breaks down compounds into small particles that the cell can use?

Answer: lysosome

Question? The cells of multicellular organisms are…….

Answer: Specialized to perform a specific function.

Question? An organ system is a group of organs that…..

Answer: Work together to perform a specific function.

Question? A group of similar cells that perform a particular function is called a(an)….

Answer: tissue

Question Describe two roles that bacteria have in the environment.

Answer: Some capture energy for photosynthesis, break down nutrients in dead matter, etc….

Question? Explain in terms of osmosis, why a raisin placed in a cup of pure water overnight will puff up with water?

Answer: The water will move into the raisin because there is a higher concentration of water on the outside, so it will move inside.

Question? What can a vaccine do when it is injected into the body?

Answer It prompts the body to produce immunity to the disease.

Question? A typical virus is composed of?

Answer A core of DNA or RNA surrounded by a protein coat.

Question? Diffusion is?

Answer The movement of particles from and area of high concentration to an area of low concentration.

Question? Antibiotics are compounds that can……..

Answer Block the growth and reproduction of bacteria.

Question? If you wash your hands properly, ordinary soaps do a good job of removing

Answer bacteria

Question? Viruses have more difficulty entering plant cells than animal cells because

Answer Plant cells have tough cell walls.

Question? What does the cell theory state?

Answer All living things are composed of cells. Cells are the basic units of structure and function. All cells come from existing cells.

Question? What are the four levels of organization in the human body from simplest to most complex?

Answer Cells Tissue Organs Organ systems

Question? Why are viruses not considered to be living things? SARS Virus

Answer They need to have a host cell in order to reproduce/live.