All living organisms on Earth are made up of microscopic structures.

are like the “organs” of a cell; they are groups of complex molecules that help cells survive

is a suspension fluid that houses the other organelles

acts as a boundary layer around the cytoplasm thus separating cells from their outside environments

a secretion of the cell membrane; it provides protection from physical injury, and with the vacuole, it provides structural support.

stores water and ingested food in a fluid sack

contain enzymes specialized to break down ingested materials, secretions, and wastes

is like the “brain” of the cell

is composed of long, thin strands of DNA which contains “instructions” that control cell metabolism and heredity

are RNA and protein complexes that are found in all cells.

act like a stomach for the cell; they take in nutrients, break them down and create energy for the cell.

are the food producers in a plant cell

13.endoplasmic reticulum

transports chemicals between and within cells.

14.Plant cells and animal cells contain different

cellular structures For example, plant cells possess a cell wall and chloroplasts

a group of tissues that work together to perform a specific function.

the fourth, and highest, level of organization

19.Nerve impulses send signals from the

central nervous system to the cells of the rest of the body

20.Hormones are released by

endocrine glands and are carried by the bloodstream to target cells

the regulation of metabolic processes to maintain the stable internal conditions required for survival

Cells function properly only in a narrow range of temperatures

are protein molecules embedded in the cell membrane that transport molecules across the cell membrane against the concentration gradient

requires the input of energy (ATP) in order to move molecules from an area of low concentration to an area of high concentration

is the process in which cells bring large molecules inside by surrounding them with the cell membrane and forming vesicles.

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CeLLs

Question	Answer
1.cells.	All living organisms on Earth are made up of microscopic structures.
2.Organelles	are like the “organs” of a cell; they are groups of complex molecules that help cells survive
3.Cytoplasm	is a suspension fluid that houses the other organelles
4.cell membrane	acts as a boundary layer around the cytoplasm thus separating cells from their outside environments
5.cell wall	a secretion of the cell membrane; it provides protection from physical injury, and with the vacuole, it provides structural support.
6.vacuole	stores water and ingested food in a fluid sack
7.lysosomes	contain enzymes specialized to break down ingested materials, secretions, and wastes
8.nucleus	is like the “brain” of the cell
9.chromatin	is composed of long, thin strands of DNA which contains “instructions” that control cell metabolism and heredity
10.Ribosomes	are RNA and protein complexes that are found in all cells.
11.Mitochondria	act like a stomach for the cell; they take in nutrients, break them down and create energy for the cell.
12.Chloroplasts	are the food producers in a plant cell
13.endoplasmic reticulum	transports chemicals between and within cells.
14.Plant cells and animal cells contain different	cellular structures For example, plant cells possess a cell wall and chloroplasts
15.tissue.	group of interconnected cells
16.organ	a group of tissues that work together to perform a specific function.
17.Organ systems	the fourth, and highest, level of organization
18.Cells are able to communicate with each other mainly through	nerve impulses and hormones
19.Nerve impulses send signals from the	central nervous system to the cells of the rest of the body
20.Hormones are released by	endocrine glands and are carried by the bloodstream to target cells
21.Homeostasis	the regulation of metabolic processes to maintain the stable internal conditions required for survival
22.Temperature	Cells function properly only in a narrow range of temperatures
23.Membrane pumps	are protein molecules embedded in the cell membrane that transport molecules across the cell membrane against the concentration gradient
24.Active Transport	requires the input of energy (ATP) in order to move molecules from an area of low concentration to an area of high concentration
25.Endocytosis	is the process in which cells bring large molecules inside by surrounding them with the cell membrane and forming vesicles.

Created by: Rodney77

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