Proteins that speed up the rate of chemical reactions in living things

The process by which chemical bond energy stored in nutrients

life process that involves combining simple substances into more complex substances

A chemical process that occurs in a living things

Process by which some organisms are able to capture light energy and use carbon dioxide and water

The ability of an organism to maintain a stable internal environment

A sugar that is a major source of energy for cells

Green organelles that contain chlorophyll, where photosynthesis takes place

Process of obtaining oxygen from the environment

Substance that can speed up the rate of a chemical reactions without being changed

A measure of whether a substance is neutral

Normally occur to keep an organism's internal environment within the limits needed from survival

Output system either modifies or reinforces the first action taken by the system

Any change in the environment that causes an organism to react

An endocrine organ that secretes insulin

A hormone that prompts glucose to move from the blood into body cells

Cells that control the opening and closing of pores on the surface of a leaf

Prevents the body from working as it should

An organism that invades the body, causing disease

Nonliving particle of protein and genetic material that reproduces

Any one of many single-celled organisms without a distinct nucleus

Kingdom of organisms that are mostly multicellular

An organism that survives by living and feeding on other organisms

The body primary defense against disease-causing pathogens

Molecule found on the outer surface of cells that the immune system recognizes

A protein, produced by the immune system, that either attacks invading pathogens

A substance made of weakened, killed or designed to protect the body from future invasions

Disease that results when HIV virus attacks the human immune system

Persons immune system is overly sensitive to environemntal substances that normally harmless

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Topic 2

Living Environment

Term	Definition
Enzymes	Proteins that speed up the rate of chemical reactions in living things
Respiration	The process by which chemical bond energy stored in nutrients
Synthesis	life process that involves combining simple substances into more complex substances
Biochemical process	A chemical process that occurs in a living things
Photosynthesis	Process by which some organisms are able to capture light energy and use carbon dioxide and water
Homeostasis	The ability of an organism to maintain a stable internal environment
Glucose	A sugar that is a major source of energy for cells
ATP	Stores energy in cells
Chloroplasts	Green organelles that contain chlorophyll, where photosynthesis takes place
Gas exchange	Process of obtaining oxygen from the environment
Catalyst	Substance that can speed up the rate of a chemical reactions without being changed
pH	A measure of whether a substance is neutral
Dynamic equilibrium	Normally occur to keep an organism's internal environment within the limits needed from survival
Feedback mechanism	Output system either modifies or reinforces the first action taken by the system
Stimulus	Any change in the environment that causes an organism to react
Pancreas	An endocrine organ that secretes insulin
Insulin	A hormone that prompts glucose to move from the blood into body cells
Guard cells	Cells that control the opening and closing of pores on the surface of a leaf
Disease	Prevents the body from working as it should
Pathogen	An organism that invades the body, causing disease
Virus	Nonliving particle of protein and genetic material that reproduces
Bacterium	Any one of many single-celled organisms without a distinct nucleus
Fungi	Kingdom of organisms that are mostly multicellular
Parasite	An organism that survives by living and feeding on other organisms
Immune System	The body primary defense against disease-causing pathogens
Antigen	Molecule found on the outer surface of cells that the immune system recognizes
Antibody	A protein, produced by the immune system, that either attacks invading pathogens
Microbe	Any microscopic organism
Vaccines	A substance made of weakened, killed or designed to protect the body from future invasions
AIDS	Disease that results when HIV virus attacks the human immune system
Allergy	Persons immune system is overly sensitive to environemntal substances that normally harmless

Created by: user-1977505

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