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