Bio
Prokaryotes lack
A nucleus
Eukaryotes usually contain
A nucleus Genetic material Specialized organelle
Which organelle would you expect to find in plant cells
Chloroplast
Spherical prokaryotes are called
Cocci
Which organelle breaks down compounds into small particles that the cell can use
Lysosomes
Humans use bacteria in all of the following way EXCEPT to
Make butter and milk
Which structures carry out cell movement
Microtubules and microfilaments
Which organelle converts the chemical energy stored in food into compounds that are more convenient for the cell to use
Mitochondrion
Which of the following statements is NOT true about archaebacteria
They make up the largest kingdom of prokaryotes
A group of similar tissue that perform a particular function is called a
Tissue
Cells fall into 2 broad categories, depending on whether they
Have a nucleus
Which of the following is an example of an organ
Heart
Which of the following is a function of the cytoskeleton
Helps a cell keep its shape
The thin, flexible barrier around a cell is called the
Cell membrane
Which of the following structures served as the cells boundary from its environment
Cell membrane
Which of the following describes a role of bacteria in the environment
-Carrying our photosynthesis -Recycling nutrients -Fixing nitrogen
Which of the following are used to identify prokaryotes
-cell shape -The way prokaryotes move -the way prokaryotes obtain energy
The work of schleiden and and schwann can be summarized by saying that
All plants and animals are made of cells
Which group of prokaryotes do scientist think may be ancestors of eukaryotes
Archaebacteria
If you wash your hands properly, ordinary soaps do a good job of removing
Bacteria
Bacteriophages infect
Bacteria only
What are the viruses that infect bacteria
Bacteriophages
Antibiotics are compounds that can
Block the growth and reproduction of bacteria
A typical virus is composed of a
Core of DNA or RNA surrounded by a protein coat
Which of the following is not found in the nucleus
Cytoplasm
What is the basic structure of a virus
DNA or RNA surround ed by a protein coat
Bacteria that break down the nutrients in dead matter into simpler substances that are taken up by plant roots are called
Decomposers
Unlike photo autotrophs, chemical autotrophs obtain energy
Directly from chemical reactions
Which of the following contains a nucleus
Eukaryotes
Prokaryotes are single-called organisms that lack a
Nucleus
Which cell structure contains the cells genetics materials and controls many of the cells activity
Nucleus
Two groups of prokaryotes that their own food from inorganic molecules are
Photo autotrophs and chemoautotrophs
Viruses have more difficulty entering plant cells than animal cells because
Plant cells have tough cell walls
What can a vaccine do when it is injected into the body
Prompt the body to produce immunity to a disease
Which of the following is a function of the cell membrane
Regulates which materials better and leave the cell
Binary fossil occurs when a bacterium
Replicated its DNA and divides in half
Viruses that contain RNA as their genetic information are
Retroviruses
Viruses that contain RNA as their genetic information are called
Retroviruses
Which organelle makes protein using coded instructions that come from the nucleus
Ribosome
Which of the following is an organelle found in the cytoplasm
Ribosomes
Who was the first person to identify and see cells
Robert Hooke
The microorganism called prokaryotes are
Single-called organisms that form protein clamps
The cells of the multicellular organisms are
Specialized to perform particular functions
Which of the following is an organ of the digestive system
Stomach
Which of the following is a function of the nucleus
Stores DNA Controls most of the cells processes Contains the information needed to make proteins
Which of the following is a disease caused by a virus
Strep throat
The main function of the cell wall is to
Support and protect the cell
Which of the following diseases is NOT caused by a virus
Tetanus
An organ system is a group of organs that
Work together together to perform a specific function