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Cells AS

QuestionAnswer
Cells consist of organelles
All living organisms on Earth are made up of microscopic structures called cells
secretion of the cell membrane; it provides protection from physical injury, and with the vacuole, it provides structural support. cell wall
stores water ingested food in a fluid sack vacuole
contain enzymes specialized to break down ingested materials, secretions, and wastes. lysosomes
processes, sorts, and modifies proteins in cells. Golgi apparatus
like the “brain” of the cell. nucleus
is composed of long, thin strands of DNA which contains “instructions” that control cell metabolism and heredity chromatin
like a stomach for the cell Mitochondria
the food producers in a plant cell Chloroplasts
transports chemicals between and within cells endoplasmic reticulum
group of interconnected cells tissue
a group of tissues that work together to perform a specific function organ
the fourth, and highest, level of organization Organ systems
send signals from the central nervous system to the cells of the rest of the body Nerve impulses
are released by endocrine glands and are carried by the bloodstream to target cells Hormones
The body attempts to maintain internal temperatures within this range through the process of homeostasis
If the pH rises due to illness or elevated carbon dioxide levels, the body increases the rate of respiration
for the pH of the blood and the cytoplasm to remain constant at about a pH of 7.4
is key in maintaining homeostasis because the membrane allows cells to regulate the materials that are entering or leaving. cell membrane
Created by: Mr. Sneed
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