biology cell test

define cytoplasm

A jellylike fluid inside the cell in which the organelles are suspended

all producers and consumers use the chemical process of respiration to synthesize

ATP

define nucleus

Control center of the cell

define cytoskeleton

Network of protein fibers that help the cell maintain its shape and allow it to move

Define mitochondria

Powerhouse of the cell

define chloroplasts

Site of photosynthesis, also contains green chlorophyll

Define Golgi Apparatus

Stack of membranes that modifies, sorts, and packages proteins and other materials for storage or release

the largest amount of DNA in a plant cell is contained in

a nucleus

which structures are found in every living cell?

a plasma membrane and cytoplasm

differences between plant cells and animal cells

animal cells are relatively smaller in size, have a irregular shape, and no cell wall,, plant cells are larger, have a regular shape and cell wall present

differences between plant and animal cells pt.2

animal cells have small vacuoles or none, and do not have chlorophyll, plant cells have large central vacuoles and do contain chlorophyll

similarities between plant cells and animal cells

both have a cell membrane surrounding the cytoplasm, both have a nucleus, both have a mitochondria

centrioles are cell structures involved primarily in

cell division

which statement is not a part of the cell theory?

cell parts such as chloroplasts are self replicating

which sequence of terms is in the correct order from simplest to most complex?

cells-> tissues-> organs-> organ systems

which organelle is correctly paired with its function?

chloroplast - serves as a site for photosynthesis

one difference between plant and animal cells is that animal cells do not have..

chloroplasts

which organelle usually present in plant cells is absent from the cells of onion tissues?

chloroplasts

how do human epithelial cells and elodea cells differ?

elodea cells have a cell wall and chloroplast, human epithelial cells have a small vacuole

define cell wall

found only in plant cells, used for support and protection

Define endoplasmic reticulum

internal membrane system where lipid components of cell membranes are made

what is a statement that best describes the plasma membrane of a living plant cell?

it selectively regulates the passage of substances into and out of the cell

the cell theory states that

living organisms are composed of cells that arise from preexisting cells

what is a statement that describes an exception to the cell theory?

mitochondria and chloroplasts contain genetic material and can replicate

which organelles must be present within a cell of a geranium leaf for respiration and photosynthesis to occur?

mitochondrion and chloroplast

Define lysosomes

organelle that breaks down organelles that are no longer useful

which is a sequence that shows a decreasing level of complexity?

organism-> organs-> tissues-> cells

in a cell, information that controls the production of proteins must pass from the nucleus to the..

ribosomes

define ribosomes

site of protein synthesis

define vacuole

storage site for sugars, proteins,minerals, pigments and wastes, helps to maintain pressure

what structures do human epithelial cells have in common with elodea cells?

they both have a cell membrane, nucleus and cytoplasm

what is the advantage of using a stain?

to enhance the visual of the cells