Chapter 5

Proteins that bind to cells and stimulate cell division are called

Growth factors

What does the diagram in figure 5,1 illustrate

a concentration gradient

The most common form of reproduction among prokaryotic is

binary fission

what is the main difference between binary fission and mitosis

binary fisson occurs in single-celled organisms only

if a tumor is maligant, then cencer cells from the tumor

can form more tumors

a cells eytoskeleton provides structure and support for the cell. It also plays an important role in

cell division and movement

which strictures give strength and support to plant cells

cell walls

Which sequence shows the progression form least complex structure to most complex

cell-tissue-organ-organ system

the process of mitosis and cytokineses produce two identical

daughter cell

which phrase best describes cytokinesis

division of the cytoplasm

starfish that reproduce by splitting into pieces are reproducing by

fragmentaion

Before a cell can move from G1 or G2 Stage to the next stage of the cell cycle , it must grow and

pass a critical checkpoint

in eukaryotic cells the nucles contains genetic information in the form of

DNA

During which phase of mitosis do sister chromatids separate from each other?

anaphase

What is the term for the programmed death of cells

apoptosis

vegetative reproduction,budding and fragmentation are examples of

asexual mitotic reprodution

before a cell proceed to mitosis from the gap 2 stage it must

pass a critical checkpoint

one of the major principles pf cell theory states that all cells are produced by

preexisting cells

in vertebrates, differentiation of cells is inflenced by

where the cells migrate

Which is the term for the group of proteins that organizes and condenses long strands of DNA into tight coils

histones

Which phrase best describes fragmentation?

Parent organism splits into pieces, each of which forms a new organism

which phrase best describes an organ system?

group of organs that work together

protieins from outsude a cell that stimulate it to divide are called

growth factors

The pancreas secretes insulin which blood sugar rises. The insulin triggers cells to take in sugar from the blood, which lowers the blood sugar level. This is an example of

homeostatic mechanism

The gap 1 gap 2 and synthesis stages of cell cycle make up

interphase

an organized group of related parts that indteract to form a whole is a

system

Which of the following limits the maximum size of a cell?

the ratio of call surface to volume

Scientists believe that all Eukaryotas share a common ancestry because the nucleotide that make up Eukaryota DNA are

the same

Which is true about binary fission

it does not take place in multcellular organisms

Which of the following statements is true of asexual reproduction

it produces genetically identical offspring

Which statement is true of the chromosome shown in figure 5.2

its left and right halves carry identical genetic information

Which statement describes the chromosomes shown in figure 5.2

its made up of two chromoatids

Which of the following is and example of an internal factor that controls the cell cycle

kinase

Two internal factors that are important in advancing the cell cycle are

kinases and cyclins

during which stage does cytokinesis take place

mitosis

during which stages does cytoplams of cell divide

mitosis

in which stage of the cell cycle do the nucles and it cintents divide

mitosis

the process of organizing and condensing DNA into its compact form takes place at the start of

mitosis

multicellular organisms use mitosis for growth development , and

repair

in a single celled organism mitodid id used for

reproduction

offspring that are genetically unique are the result of

sexual reproduction

Which reproduce asexuallt through mitosis

some multi cellular and unicellular eukaryotes

Which organism is capable of reproduction through asexual mitosis

starfish

sif you want to dind the footballs surface areal which do you need to measure

the quantity of leather used

cells in a deceloping embrot differentiate based on

their location in the embryo

Which of the following is true of malignant tumors

they can causetumors in other parts of the body

Why do the cells lining the stomach deivide more quickly than those in the liver

they undergo more wear and tear

Which statement is true about the rates of cell division in eukartyotes

they vary greatly within an organism

if a cell can't move enough material through its membrane to survie, then the ratio of its surface area to valume is

too small

what does a cell make during the synthesis stage of the cell cycle

a copy of DNA

one difference between a cancer cell and a normal cell is that

cancer cells divide uncontrollably

Which type of stem cell can grow into any other cell type

totipotent

Which prase best describes cancer

uncontrolled cell growth

in order to grow, all organisms must

use chemical energy

a plants leaf consist of

various types of tissue

One differance bettween a caner cell and a normal cell is that

cancer cellsvan divide in the absence of growth factors

stem cells are important to multi cellular organisms bc their

capacity to differentiate

substance know to produce or promote cancer are called

carcinogens

During gap 1 stage of the cell cycle, a cell

carries out its normal functions

which of the following is a direct result of a normal cells ability to express only certain genes

cells can differentiate and specialize

Which of the following statements is true of cytokinesis

completes the cell cycle

kinases and cyclins are internal factors that

control the cell cycle

During interphase a cell grows, duplicates organelles, and

copies DNA

molecules that control the stages of the cell cycle in all eukrayotes are similar, this fact suggest that

eukaryotes share a common ancestry

a hormone present in the blood can stimulate the growth of certain cells the hormone is acting as a

external factor