Exam

Question 1

Do the PHET atom game

Answer 1

YOU BETTER

Question 2

Drug addiction (or substance use disorder) includes the continuing, compulsive use of drugs in spite of negative health, legal or social consequences. Which of the following are real examples of potential consequences?

Answer 2

-grades dropping
-having headaches when experiencing withdrawal
-harming someone else or yourself while driving under the influence of drugs
-losing a scholarship due to getting caught with drugs
-getting “popcorn lung” from vaping, and having -difficulty breathing
-developing psychosis and schizophrenia due to adolescent use of marijuana
-getting in fights with your parents

Question 3

What is true about how drugs affect the brain?

Answer 3

1. Drugs cause MORE dopamine to be released than any natural experience can.
2. Drugs can enter a neuron, causing more electrical signals, releasing extra dopamine.
3. Drugs can attach to receptors on the axon terminal endings, causing more dopamine to be released.

Question 4

Drugs are considered to be so rewarding because _____ dopamine is released than would by from any natural experience could stimulate.

Answer 4

MORE

Question 5

Dopamine acts on which part of the brain?

Answer 5

Reward Center

Question 6

PET scans showing brain activity shows that an addicts brain _______ compared to a normal, healthy brain.

Answer 6

is less active

Question 7

Brain activity in an addicts brain can recover when they abstain from using drugs. Which of the following accurately reflects what you learned about how long it takes an addicts brain to recover?

Answer 7

Recovery occurs a long time, and peoples brains partially improve after months.

Question 8

A technique called microarray analysis was used to observe changes that occur when a person goes through withdrawal, after abstaining from drug use. What was learned from this test?

Answer 8

Gene activity changed, where some genes became more active, and others became less active.

Question 9

How long do these changes to an addicts brain last?

Answer 9

It is unknown if the changes are permanent, or if a brain can fully recover.

Question 10

Because of these changes to the brain, scientists and doctors classify addiction as a ________.

Answer 10

disease

Question 11

Adolescents can drink more than adults can before becoming sleepy. Which of the following are true?

Answer 11

• Adolescents have a higher tolerance to alcohol than adults, and can drink more.
• Adolescents could drink more than adults, leading to risky outcomes (becoming sick, making poor decisions, hurting themselves)

Question 12

what process is: Growing and forming a fatty coating on neuron axons

Answer 12

Mylination

Question 13

what process is: Removing unnecessary axon endings and strengthening used endings

Answer 13

Synaptic Pruning

Question 14

what process is: Further growth and development of this part of the brain helps with impulse control and organization

Answer 14

Frontal Lobe

Question 15

The hippocampus, involved with memory, was shown to be smaller in adolescents using __________.

Answer 15

alchohol

Question 16

Which of the following were shared as potential consequences for the adolescent brain when using drugs?

Answer 16

-unusual quality to their myelin
-a smaller hippocampus
-their reward center is wired to want the drug
-more addicted as an adolescent, than an adult
-more likely for an adult to addicted if drug use was started as an adolescent

Question 17

What are possible things we know about treatment?

Answer 17

-People learn “harm reduction” techniques like how to manage their emotions
-People can get medical support, recieving medications to help aid with withdrawal symptoms
-Some addictions can have fatal withdrawal symptoms and medical supervision can reduce the risk (alcohol and benzodiazepines)
-Addiction is a chronic disease, and about a third of people recover, a third of people improve, and a third of people need more support to get over their addiction.

Question 18

What did each scientist find
Dalton
Thompson
Rutherford
Bohr
Chadwick

Answer 18

Dalton: Atom
Thompson: Electron
Rutherford: Nucleus
Bohr: E- Energy Levels
Chadwick: Neutron

Question 19

what is something Dalton claimed?

Answer 19

Atoms cannot be divided

Question 20

what is something Thomson claimed?

Answer 20

Atoms have negatively charged particles throughout it

Question 21

what is something Rutherford claimed?

Answer 21

Atoms have positively charged particles concentrated in the center

Question 22

Which scientist used a “gold foil” experiment to discover the nucleus?

Answer 22

Rutherford

Question 23

True or False: An atom is neutral?

Answer 23

TRUE

Question 24

Mass of:
Proton
Neutron
Electron

Answer 24

Proton: 1 amu
Neutron: 1 amu
Electron: 1/1840 amu

Question 25

The mass number of an atom of carbon, that has 6 protons and 7 neutrons, and 8 electrons is __________.

Answer 25

13 amu

Question 26

The periodic table has been arranged by different properties over its history. How is the modern periodic table arranged compared to Mendeleev’s periodic table?

Answer 26

Modern: Atomic number
Original: Atomic mass

Question 27

Find Oxygen-16 (Atomic #8, 0)
Period?
Group?
Number of energy levels?
Number of valence electrons?

Answer 27

2
16
2
6

Question 28

Do the PHET atom game

Question 38

Do the PHET atom game