Unit 1,2,3,4 Flashcards
What are the characteristics of alpha (α), beta (β), and gamma (γ)?
Characteristics:
alpha (α): positively charged
beta (β): negatively charged
gamma (γ): no weight/no mass
What are the relative ionizing effects of alpha (α), beta (β), and gamma (γ)?
Their relative ionizing effects:
alpha (α): most ionizing
beta (β): middle ionizing
gamma (γ): least ionizing
What are the relative penetrating abilities of alpha (α), beta (β), and gamma (γ)?
Their relative penetrating abilities:
alpha (α): least penetrating
beta (β): middle penetrating
gamma (γ): most penetrating
What makes an atom neutral? They should have the same numbers of: ____ and ______.
protons (+) and electrons (-).
alpha (α), beta (β), and gamma(γ) radiation come from the ___ of an atom that is unstable.
Decay
A beta particle is a fast-moving ______.
Is an electron
What is Ethane’s formula?
C2H6
Propane, butane, octane are….
alkanes
Alkanes are…..
saturated
What is propane’s formula?
C3H8
How many carbons are there in the following: Butane Propane Ethane Methane
Butane: 4
Propane: 3
Ethane: 2
Methane: 1
What is an allele?
Alleles are different versions of the same gene.
How many alleles do we have? What are they called?
We have 2 alleles. One dominant and one recessive.
Individuals who are homozygous carry:
Identical alleles.
Individuals who are heterozygous carry:
two different alleles.
Who is more likely to survive?
The fittest/better-adapted organisms are most likely to survive.
What happens when the environment changes?
Plants and animals evolve, some survive, but many become extinct.
Characteristics can be passed on to the next generation by…
Only organisms that reach breeding age
What receptor is this: light energy?
Photoreceptor
What receptor is this: changes in energy heat/temperature?
Thermoreceptor
What receptor is this: changes in pressure or movement/vibrations?
Mechanoreceptor
What receptor detects chemical stimulus?
Chemoreceptor
What receptor detects pain signals?
Nociceptor
Describe the function of the: cornea?
Is a transparent part of the eye that covers the pupil. It refracts the light to the cornea
Describe the function of the: iris?
Is a pigmented soft muscle that controls the size of the pupil. Controls how much light enters the eye by contracting and dilating
Describe the function of the: optic nerve?
Carries the signal impulse to the brain
Describe the function of the: lens?
Adjust to Focus the light on the retina.
Describe the function of the: retina?
Contains the sensitive cells, cons, and rods. (light receptors)
What is Homeostasis?
Homeostasis is the steady level of internal, physical, and chemical conditions maintained by the controlled system.
Define control systems?
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.
