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