BSC 108 Test 1 Questions With Correct Answers Graded A+
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BSC 108 Test 1
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BSC 108 Test 1
BSC 108 Test 1
Be able to identify the difference between a hypothesis, prediction, observation, and control. - Answer- Hypothesis
Its a proposed explanation in the beginning of the scientific method. Its purpose is to investigate to see if the hypothesis is proven
Prediction
What yo...
BSC 108 Test 1
Be able to identify the difference between a hypothesis, prediction, observation, and control. -
Answer- Hypothesis
Its a proposed explanation in the beginning of the scientific method. Its purpose is to investigate
to see if the hypothesis is proven
Prediction
What you think will happen in the experiment
Observation
What you observe when you conduct the experiment
Control
The things in the experiment that are controlled
Chloroplasts - Answer- (only found in plant cells)- perform photosynthesis
Cytoplasm- - Answer- consists of various organelles suspended in the liquid cytosol
Cytoskeleton- - Answer- maintain cell shape
Golgi - Answer- receives, refines, stores and distributes chemical products in a cell
How are the chemical bonds formed? - Answer- Covalent- sharing of electrons
Ionic - attraction between positive & negative, transfer of electrons
Hydrogen - Unequal sharing electrons
Two hydrogen atoms joined to one oxygen atom by single covalent bond
How do cells move? - Answer- The cilia and the flagella cause the cell to move
How do the bases pair in a DNA strand? In an RNA strand? - Answer- DNA - base pairing
A&T
G&C
RNA - base pairing
A&U
G&C
How do you define something as living? - Answer- Have order
Regulate themselves (homeostasis)
Grow & develop
Use energy
Respond to environment
Reproduce
Evolve
, How does the hydrogen bond contribute to the properties of water? - Answer- This is called
the cohesion of water
Hydrogen bonds allow water molecules to stick together
Moreover, hydrogen bonds give water unusually high surface tension, making it behave as
though it were coated with invisible film
Think of if you ever seen a bug standing on the surface of water
How many electrons are found in the first energy shell? Second? Third? - Answer- Each
orbital has a maximum of 2 electrons
First energy level has 1 orbital
2 electrons
2nd energy level has 4 orbitals
8 electrons
3rd energy levels
8 electrons
In a chemical reaction what is beginning material known as? - Answer- Reactants
In a chemical reaction what is the ending material referred to as? - Answer- Solution
(product)
Know examples of bases and acids. - Answer- Bases
Cleaning supplies, baking soda, bleach
Acids
Citrus fruit, battery acid, acid rain
Know examples of each macromolecule. - Answer- Carbs:
Bread, rice, potatoes
Proteins:
Structural
Storage
Seeds and eggs
Contractile
Transport
Hemoglobin: in red blood cells
Enzymes
Some cleaning supplies
Lipids
Saturated
Unhealthy
No double bond- straight shape
butter , beef
Unsaturated
Double bonds- bent shape
Healthier
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