Science Unit 2

Question 1

What are the basic functions if all living things?

Answer 1

All living things need energy, respond and adapt to the environment, reproduce, grow, produce wastes.

Question 2

how are living systems organized?

Answer 2

Systems.

Question 3

what are the main parts of the microscope?

Answer 3

The eyepiece (ocular lens), the arm, the coarse adjustment knob, the fin adjustment knob, the light source, the diaphragm, the stage, the nose piece.

Question 4

How do you calculate field of view?

Answer 4

medium power = lower power X magnification of low-
field of view field of view power objective lens
EX.
10 = 5 X 40/20

Question 5

identify the main parts of an animal cell.

Answer 5

nucleus, vacuoles, cell membrane, cytoplasm.

Question 6

identify the main parts of an plant cell.

Answer 6

chloroplasts, cytoplasm, vacuoles, nucleus, cell membrane.

Question 7

what is selectively permeable membrane?

Answer 7

A cell membrane that only allows certain things through.

Question 8

what is diffusion?

Answer 8

Diffusion happens when particles spread out to where there is more room.

Question 9

what is osmosis?

Answer 9

Osmosis is the diffusion of water through a selectively permeable membrane.

Question 10

what is transpiration?

Answer 10

transpiration is the loss of water through evaporation.

Question 11

How does a plant transport fluids?

Answer 11

root hairs pull water into the root, then water passes through the cells by osmosis. The xylem tissue transports the water to the stem and leaves.

Question 12

Describe the levels of cellular organism in a multi-cellular organism.

Answer 12

Cells with the same job are grouped into tissues.
groups of different tissues form organs.
organs work together in systems.

Question 13

what is the function of the respiratory system?

Answer 13

It exchanges oxygen and carbon dioxide.

Question 14

what are the structures of the respiratory system?

Answer 14

The diaphragm, the trachea, the lungs, the bronchi, the bronchiolies, the alveoli, the capillaries.

Question 15

what is the function of the digestive system?

Answer 15

It breaks down food particles and eliminates waste.

Question 16

what are the structures of the digestive system?

Answer 16

The oral cavity, the tongue, the liver, the anus, the appendix, the large intestine, the small intestine, the gallbladder, the esophagus, the spleen, the pancreas, the stomach.

Question 17

what is the function of the nervous system?

Answer 17

controls and co-ordinates body activities. senses internal/external changes.

Question 18

what are the structures of the nervous system?

Answer 18

the dendrite, the cell body, the myelin sheath, the axon, the synapse, the axon terminals, the bipolar neuron.

Question 19

what is the function of the excretory system?

Answer 19

regulates blood composition and excretes waste.

Question 20

what are the structures of the excretory system?

Answer 20

the liver, the kidneys, the bladder.

Question 21

How do our body systems work together?

Answer 21

our body systems work together to keep our bodies functioning properly. for example the digestive and the excretory systems work together in the way that after the digestive system breaks down food, the excretory system deals with the waste.

Question 22

how can you keep each of you body systems?

Answer 22

by a healthy diet, getting enough sleep, and enough water. also getting enough exercise.

Question 23

what disorders are common iin the respiratory system?

Answer 23

bronchitis, lung cancer.

Question 24

what disorders are common iin the digestive system?

Answer 24

Colon cancer, peptic ulcer

Question 25

what life style choices should be made if we want healthy bodies.

Answer 25

not smoaking, not excessively dronking, not taking drugs, healthy diets, regulating fluids/exercise/sleep.