section 1
When during the cell cycle is a cells DNA replicated
5 phase
Prokaryotes lack
A nucleus
Which of the following structures serves as the the cells boundary from its environment
Cell membrane
Which organelle would you expect to find in the plant cells
Chloroplast
Which organelle breaks down compounds into small particles that the cell can use
Lysosomes
Which structures carry out cell movement
Microtubles and microfilaments
Which organelle coverts the chemical energy stored in food into compounds that are more convenient for the cell to use
Mitochondria
Cancer is a disorder in which some cells have lost the ability to control their
Growth rate
Cells falls into two broad categories depending on whether they
Have a nucleus
Which of the following is a function of the cytoskeleton
Help save a cell keep its shape
What is the role of the spindle during mitosis
It helps seperate the chromosomes
The thin flexible barrier around a cell is called the
Cell membrane
Which of the following contains a nucleus
Eukaryotes
Eukaryotes usually contains
All of the above
Which of the following is a function of the nucleus
All of the above
Which of the following is a phase in the cell cycle
All of the above
The work of schleiden and Schwann can be summarized by saying that
All plants and animals are made of cells
Which of the following explains why normal cells grown in a Petri dish tent to stop growing once they have covered the bottom of the dish
Contact with other cells stop cell growth
Which of the following is NOT found in the nucleus
Cytoplasm
Which cell structures contains the cells genetic material and controls many of the cells activities
Nucleus
When during the cells cycle are chromosome visible
Only during the M phase
Which of the following represents the phase of mitosis in their proper sequence
Prophase, metaphase, anaphase, telephase
Which of the following is a function of the cell membrane
Regulates which materials enter and leave the cell
Which of the following is an organelle found cytoplasm
Ribosome
Which organelle makes proteins using coded instructions that come from the nucleus
Ribosome
Who was the first person to identify and see cells
Robert hook
The cell of multi cellar organisms are
Speacilized to perform particular functions
The main function of the cell wall is to
Support and protect the cell
Which event occurs during interphse
The cell grows