Unit 1,2,3,4

Question 1

What are the characteristics of alpha (α), beta (β), and gamma (γ)?

Answer 1

Characteristics:
alpha (α): positively charged
beta (β): negatively charged
gamma (γ): no weight/no mass

Question 2

What are the relative ionizing effects of alpha (α), beta (β), and gamma (γ)?

Answer 2

Their relative ionizing effects:
alpha (α): most ionizing
beta (β): middle ionizing
gamma (γ): least ionizing

Question 3

What are the relative penetrating abilities of alpha (α), beta (β), and gamma (γ)?

Answer 3

Their relative penetrating abilities:
alpha (α): least penetrating
beta (β): middle penetrating
gamma (γ): most penetrating

Question 4

What makes an atom neutral? They should have the same numbers of: ____ and ______.

Answer 4

protons (+) and electrons (-).

Question 5

alpha (α), beta (β), and gamma(γ) radiation come from the ___ of an atom that is unstable.

Answer 5

Decay

Question 6

A beta particle is a fast-moving ______.

Answer 6

Is an electron

Question 7

What is Ethane’s formula?

Answer 7

C2H6

Question 8

Propane, butane, octane are….

Answer 8

alkanes

Question 9

Alkanes are…..

Answer 9

saturated

Question 10

What is propane’s formula?

Answer 10

C3H8

Question 11

How many carbons are there in the following: 
Butane  
Propane 
Ethane 
Methane

Answer 11

Butane: 4
Propane: 3
Ethane: 2
Methane: 1

Question 12

What is an allele?

Answer 12

Alleles are different versions of the same gene.

Question 13

How many alleles do we have? What are they called?

Answer 13

We have 2 alleles. One dominant and one recessive.

Question 14

Individuals who are homozygous carry:

Answer 14

Identical alleles.

Question 15

Individuals who are heterozygous carry:

Answer 15

two different alleles.

Question 16

Who is more likely to survive?

Answer 16

The fittest/better-adapted organisms are most likely to survive.

Question 17

What happens when the environment changes?

Answer 17

Plants and animals evolve, some survive, but many become extinct.

Question 18

Characteristics can be passed on to the next generation by…

Answer 18

Only organisms that reach breeding age

Question 19

What receptor is this: light energy?

Answer 19

Photoreceptor

Question 20

What receptor is this: changes in energy heat/temperature?

Answer 20

Thermoreceptor

Question 21

What receptor is this: changes in pressure or movement/vibrations?

Answer 21

Mechanoreceptor

Question 22

What receptor detects chemical stimulus?

Answer 22

Chemoreceptor

Question 23

What receptor detects pain signals?

Answer 23

Nociceptor

Question 24

Describe the function of the: cornea?

Answer 24

Is a transparent part of the eye that covers the pupil. It refracts the light to the cornea

Question 25

Describe the function of the: iris?

Answer 25

Is a pigmented soft muscle that controls the size of the pupil. Controls how much light enters the eye by contracting and dilating

Question 26

Describe the function of the: optic nerve?

Answer 26

Carries the signal impulse to the brain

Question 27

Describe the function of the: lens?

Answer 27

Adjust to Focus the light on the retina.

Question 28

Describe the function of the: retina?

Answer 28

Contains the sensitive cells, cons, and rods. (light receptors)

Question 29

What is Homeostasis?

Answer 29

Homeostasis is the steady level of internal, physical, and chemical conditions maintained by the controlled system.

Question 30

Define control systems?

Answer 30

The control system is everything in our body that must contain a normal range. The receptors detect a stimulus, while the effector responds to the signal of the control system, providing a response to the stimulus. They have effectors that produce the response to bring the system back into balance.