Exam Review Flashcards
The subatomic particle that has a positive charge and a mass of one
Protons
The sub atomic particle that has no charge and a mass of one
Neutrons
The subatomic particle that has a negative charge and no mass
Electron
An _____ is an atom or a molecule that has gained or lost electrons therefore was all came negative or positive charge
Ion
In an equation numbers often appear in front of a chemical formula. What do these numbers tell you?
The number of compounds or atoms of each substance in a reaction
Conservation of mass : In all chemical reactions, the ____must equal the ______
Mass of products must equal the mass of reactants no atoms are created or destroyed. They are just rearranged.
General chemical equation for synthesis
A + B -> AB
General chemical equation for decomposition
AB -> A+B
General chemical equation for single displacement
A+BC-> AC + B
General chemical equation for double displacement
AB + CD -> AD + CB
General chemical equation for combustion
CxHy + O2 -> CO2 + H2O
General chemical equation for neutralization
Acid + Base -> Salt + Water
Why can you sometimes see your image in a lake but other times you cannot
Sometimes you’re able to see your image in a lake because the water is calm and flat and acts as a mirror because all the light rays reflect off the smooth surface as parallel other times you can’t see your image the water is wavy without a flat surface. This causes the light race to disperse in different directions, not creating an image.
Explain what refraction is
Light Benz when it passes from one medium into another due to the changes in speed and light
What is cell specialization?
The process of a cell becoming a particular type of cell is called cell differentiation. All cells carry the same DNA formation, but they do not perform the same functions and may not look the same.
What is a specialized cell?
No When a cell has physical and chemical differences that allows them to perform one job very well
Embryonic stem cells
They come from human embryos, and at this point, these cells have not differentiated and can become any type of cell =pluripotent
Adult stem cells
They have a limited ability to differentiate. They are able to regenerate all the cell types of the organ where they originate = multipotent
Plant organs
Roots- anchor plant in soil, collects nutrients + store food
Leaf- site of photosynthesis
Stem- support transports water plus nutrients through plant
Flower- reproductive structure
What are sister chromatids?
Identical copies of a chromosome strand
Is epidermal tissue a plant or animal tissue?
Plant tissue
Sink
Any process that removes CO2 from the atmosphere eg. forests, oceans
Source
Any process that releases CO2 eg. burning fossil fuels
List the layers of the atmosphere in order from lowest to highest
Tacos- troposphere: weather the most CO2
Scream- Stratosphere: highest ozone protects from us from us rays
Make- mesosphere: little gas, low pressure
Tummy- thermosphere: x-rays gamma rays r here
Explode-exosphere: space
The three spheres in the biosphere
Atmosphere: air
Lithosphere; land
Hydrosphere: water
- Which of the following is NOT an example of an application of neutralization reactions?
A. Taking an antacid to relieve acid reflux
B. In neutralizing acidic soil
C. To adjust the pH of products
D. The corrosion of the soil
d
Explain the function of connective tissue
Connective tissue and joint tissues together and strengthens them. It supports and protects other tissues and stores, fat and fills empty space. The three types of connective tissue are such as blood supporting such as bone or cartilage and binding such as tendons and ligaments.
Describe the functions of the nervous tissues
Nervous tissues, help by creating and sending messages throughout the body and coordinating its actions. The nervous tissues look at the body surroundings and help to trigger the bodies response, depending on their environment the nervous tissue also relays signals from the brain and spinal cords to the muscles.
Explain the functions of the epithelial tissue
It forms a protective barrier by connecting adjoining cell membrane, it lines the body cavities and outer surface of the body. It protects the body from outside sources
Epidermal tissue
Protective barrier of the plant, allows water, CO2, O2 to come in and out of the plant
Vascular tissue
Transports substances throughout the plant by using the xylem which carries water and minerals (one way up) and plhoem which carries sugars both ways through the plant
