Science

Question 1

What are the three main functions of the nervous system?

Answer 1

Sense, Controlling your voluntary and involuntary responses, and storing and forming memories.

Question 2

The nervous system is composed of the brain, spinal cord and nerves. Describe what each part of the system does.

Answer 2

The brain form perceptions, stores memories and makes decisions, the spinal cord, controls reflexes, connects body to brain, and relays information to the brain, and nerves are responsible for sensing and responding.

Question 3

What is a perception?

Answer 3

Awareness of the world through your senses.

Question 4

What organs are necessary for a person to see? Why can’t a person see without all of these organs.

Answer 4

The eye, optic nerve, and brain.
The eye detects light stimuli and the nerve carries nerve impulse to brain to form a perception.

Question 5

What is the difference between a neuron and a nerve?

Answer 5

Neurons are the specialized cells that act as the basic building blocks of the nervous system and a nerve is a organ.

Question 6

How does the structure of a neuron help it function?

Answer 6

The structure of neuron is important for it’s function because it transmits signals from one side of the cell to the other, being relayed to the other neurons.

Question 7

What is a nerve impulse?

Answer 7

An electrical signal from a neuron when stimulated.

Question 8

What is the difference between a motor neuron and a sensory neuron?

Answer 8

The sensory neuron senses stuff like touch and sight and sends the info to the brain the motor neurons send info from brain to brain.

Question 9

What is the difference between the stimulus and response is

Answer 9

light receptors detect the brain registers it and already has or has to create a new memory, forming a perception of the stimulus, while a response is what your body/ how it reacts by the stimulus.

Question 10

Provide a example of a stimulus and a response.

Answer 10

Stimulus: Friend waving at you.
Response: Wave back.

Question 11

Explain how sensory neurons, motor neurons, nerves, the brain, muscles, and nerve impulses are involved in the stimulus and response pathway you provided.

Answer 11

1. The stimulus is your friend waving at you
2. Your light receptor lets light in the eye.
3. the sensory neurons send the nerve impulse from the nerves to the brain.
4. The brain processes the impulse and forms a perception of your friend waving to you and decides to wave back.
5. You response is sent through your motor neurons to your muscles.
6. Your response is to wave back.

Question 12

Describe the difference between a voluntary response and a involuntary response. Provide a example.

Answer 12

A voluntary response is something you don’t think about and it is the opposite for voluntary responses.

Question 13

What is a reflex? Why are they important?

Answer 13

Reflexes are responses to a fast stimulus when you are in danger. This happens so you don’t get hurt.

Question 14

Why are some reflexes controlled by the spinal cord while others are controlled by the brain?

Answer 14

It depends where the reflex is taking place because you need to react quickly.

Question 15

Humans have 3 different types of receptors. List each type of receptor. Provide a example of the sensory organs that

Answer 15

Mechanical receptors: Touch in skin and sound in ears.
Chemical receptors is for taste and smell.
Light receptors allows light.

Question 16

What is the difference between the CNS and the PNS

Answer 16

The PNS is with nerves and the CNS is the brain and the spinal cord.

Question 17

What’s the difference between long term memory and short term memory?

Answer 17

Long term memory is when you store your memories for a long time and short term memories is when you store certain memories for a small period of time.

Question 18

What are the parts of a neuron?

Answer 18

Dendrite, axon, myelin, axon tip, and neurotransmitters.

Question 19

How does a nerve impulse travel through the neuron?

Answer 19

Signals from one neuron enter one side of the cell, travel through the cell body and axon, and then are relayed to the neighboring neurons through the branched endings of the axon.

Question 20

Frontal Lobe

Answer 20

Concentration, Planning, Impulse control, problem solving, personality, body control, sense of smell, speech/understanding languages.

Question 21

Panetal Lobe

Answer 21

Body Awareness, taste, touch, pressure.

Question 22

Occipital Lobe

Answer 22

Sight/Vision

Question 23

Cerebellum

Answer 23

Balance, writing, fine motor control, and coordination.

Question 24

Temporal lobe

Answer 24

Hearing, facial recognition, long-term memory.

Question 25

Brain stem

Answer 25

responsible for maintaining homeostasis/controls involuntary breathing, heart-rate, ect.

Question 26

Limbic Lobe

Answer 26

Gives emotional state-happy/sad.

Question 27

Independent vs Dependent Variables

Answer 27

You want to see the effect of studying or sleeping on a test score. In the example, “test score” is the dependent variable. “Studying” or “sleeping” is the independent variable because these factors impact how much a student scores on the test.

Question 28

Qualitative vs Quantitative data

Answer 28

The qualitative data is the qualities in the data whereas the quantitative data is the numerical aspect in the data

Question 29

What are the characteristics of a good hypothesis is

Answer 29

You hypothesis should be testable, simple, if then because statement, has clarity, and data to back it up.

Question 30

What is a controlled variable?

Answer 30

The controlled variable is the unchanged element in the experiment.

Question 31

Are all living things made up of cells?

Answer 31

YES.

Question 32

Cells are..

Answer 32

the basic unit of structure and function in living things

Question 33

Where do all cells come from?

Answer 33

other cells.

Question 34

What is the cell cycle?

Answer 34

The regular sequence of growth and division in cells.

Question 35

What are the two main parts of the cell cycle?

Answer 35

Interphase: In which the cell grows and replicates cell structures.
Mitosis and cytokiesis: In which the DNA and cytoplasm divide into two identical daughter cells.

Question 36

What is the difference between prokaryotes and eukaryotes and viruses.

Answer 36

Prokaryotes: No nucleus, Simple, bacteria and Archea
Eukaryotes: Multicellular, Has Nucleus, large/complex, has organelles like chloroplasts and mitochondria, example: is protists, animals, fungi, plants.