What are one of the ways that prokaryotes and eukaryotes differ? Prokaryotes and eukaryotes include single genetic info.. Prokaryotes have no nucleus and eukaryotes do have a nucleus. Prokaryotes  are cells and eukaryotes are not.

 

About how many years ago did the history of cells begin? About three hundred years ago About four hundred years ago. About five hundred years ago.

 

Who postulated that all living things do not arise by spontaneous generation? In what year? Robert Hook , 1865 F. Redi, 1626 Siemens, 1939

 

Alexander Flemming described chromosome behavior  during? Osmosis Mitosis Meiosis

In what year were the first sheep cloned? 1996         1997    1998

 

What are the four things that are found in a nucleus? Nuclear cell wall, nucleolus, cytoplasm, nucleolus               Nuclear, anaphase, spindle fiber, nucleolus Nuclear membrane, nucleolus, anaphase, spindle fibers.

 

In meiosis, the number of chromosomes are reduced by? Whole Half One fifth

 

What is a passive transport? It is a cell that moves around the nucleus and gives it energy. It is the movement of a substance across a cell membrane without the input  of the cell's energy. It is the movement of a cell across a cell wall with the input of the cell's energy.

 

What is a active transport? It is a membrane that can move from high to low concentration or from low to high concentration.  It is a membrane that can move from hot to cold concentration or from cold to hot concentration.  It is a membrane that can move from warm to cool concentration or from a cool to warm concentration.

 

What do the chromosomes contain? Cell nucleus. Cell genetic information. Cell membrane.