definitions
definitions
definitions
definitions
N.J. Ask Practice
100
what is a cell
the basic unit of all living things
100
what is endoplasmic reticulum
the cellular structure that transports materials within the cell
100
what is a nuclear membrane
the cellular structure that encloses and protects the nucleus
100
what is a ribosome
an organelle that contains the enzymes that help produce proteins
100
Which process does the diagram illustrate
B
200
what is a cell membrane
the structure around two cells that regulates movement of substances into and out of cells
200
what is homostasis
the ability to maintain a constant internal environment
200
what is a nucleus
the control center of a cell that contains the chromosomes
200
what is tissue
a collection of plant or animal cells that does a specific job
200
The human body has levels of organization that scientists order from least complex to most complex. Which of the following is the most complex?
D
300
what is a cell wall
the outer structure around plant cells
300
what is a hormone
the substance produced by an organism that stimulates a response within its cells
300
what is an organ
a group of tissues that work together to do a job in the body
300
what is a vacuole
a cavity inside a cells cytoplasm that contains oigment and often stores food and water
300
Juan was looking at plant and animal cells under the microscope. Which cell component would Juan see only in a pant cell?
B
400
what is chloroplasts
a body inside a plant cell which converts sunlight into food energy
400
what is metamorphosis
describes the changes of forms that some animals must undergo to reach maturity
400
what is an organ system
s group of organs that work together to preform a set of functions
400
Why dot animal cells need chloroplasts
because they dont go through photosynthesis
400
Which of the following is an example of homostasis?
A
500
what is cytoplasm
the clear, thick fluid that holds the internal components of a cell
500
what is mitochondrion
an organelle that releases energy to the rest of the cell
500
what is an organelle
a specialized structure within a cell, such as a mitochondria or ribosome
500
Why is it important for plants to have cell walls
Plant cells need a cell wall to grow up right
500
What is the purpose of the endocrine system in the human body?
C
M
e
n
u