Term 2: Ecosytems And Body Coordination

Question 1

Ecosystem

Answer 1

A community of organisms interacting and their physical environment

Question 2

Habitat

Answer 2

the natural home or environment of an animal,plant or other organism

Question 3

Biotic Factors

Answer 3

A living thing such as an animal or plant that affects an ecosystem

Question 4

Abiotic Factors

Answer 4

A nonliving condition or thing, as climate or habitat, that influences or affects an ecosystem and the organisms in it

Question 5

External Environment

Answer 5

The environment outside an organism. This includes the physical, chemical and biological conditions, such as a high concentration of a harmful substance in the air.

Question 6

Aerobic Respiration

Answer 6

The form of cellular respiration that is more efficient. The chemical equation is:
C6H12O6(Glucose)+ 602 ——>6C02 + 6H20+ATP(Energy/Adenosine Triphosphate)

Question 7

Internal Environment

Answer 7

As the name suggests, the state of the inside of the body

Question 8

Anaerobic Respiration

Answer 8

The form of cellular respiration that is less efficient and releases lactic acid. This form of respiration does not require oxygen.

Question 9

Mitochondria

Answer 9

The powerhouse of the cell where cellular respiration takes place

Question 10

Photosynthesis

Answer 10

The process where a plant converts water and carbon dioxide into glucose and oxygen. Process requires chloroplasts and sunlight.
https://ib.bioninja.com.au/_Media/photosynthesis-equation_med.jpeg

Question 11

Chloroplasts

Answer 11

The part of a cell exclusive to plants that is required for the photosynthesis process. Makes plants green.

Question 12

Carbon Cycle

Answer 12

The process by which carbon interacts naturally with the environment

Question 13

Homeostasis

Answer 13

A tendency for cells tissues and organisms to attempt to stay at an equilibrium (body temperature?)

Question 14

Endocrine System

Answer 14

The system of the body that controls hormones

Question 15

Hormones

Answer 15

A substance produced in an organism such as blood or sap to stimulate specific cells or tissues into action.

Question 16

Glands

Answer 16

An organ in the body which secretes substances that will be used either in the body or be discharged into the surroundings

Question 17

Nervous System

Answer 17

The network of nerves and fibres that transmits electrical signals throughout the body

Question 18

Central Nervous System

Answer 18

The brain and spinal cord

Question 19

Peripheral Nervous System

Answer 19

The part of the nervous system outside of the brain and spinal cord

Question 20

Neurons

Answer 20

Cells in the body that transmit information to other nerve cells, muscle or gland cells

Question 21

Dendrites

Answer 21

Part of neuron that receives information from other cells/neurons

Question 22

Axons

Answer 22

Part of the neuron that takes information from the cell body to the other part of the neuron across the mylin sheath

Question 23

Axon Terminals

Answer 23

The very end of the neuron where the electrical signal is passed on to another cell

Question 24

Neurotransmitters

Answer 24

A kind of chemical messenger that carries the information/signal

Question 25

Synaptic Cleft

Answer 25

The gap between neurons where neurotransmitters are released

Question 26

Positive Feedback Mechanisms

Answer 26

It is something that can continue on once complete. During childbirth a chemical is released that speeds up contractions.

Question 27

Negative Feedback Mechanism

Answer 27

The opposite of a positive feedback mechanism. It can’t continue once complete.