4090697
Descripción
Test por ashleyrobinson5155, actualizado hace más de 1 año
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Creado por ashleyrobinson5155
hace alrededor de 9 años
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Pregunta 1
Pregunta
What is a Metabolic pathway?
Respuesta
-
Metabolic energy that is captured more easily if it is released in large amounts rather than in small
-
A series of steps (in cells) in which molecules are broken down OR assembled
-
substrates fit onto the enzyme in such a way that they are oriented to react.
Pregunta 2
Pregunta
Enzymes catalyze (speed up) reactions in metabolic pathways
Respuesta
- True
- False
Pregunta 3
Pregunta
Energy transformations are always 100% efficient.
Respuesta
- True
- False
Pregunta 4
Pregunta
Organisms are open systems (constant energy in-flow).
Respuesta
- True
- False
Pregunta 5
Pregunta
Shape determines protein function. Enzymes are proteins.
Respuesta
- True
- False
Pregunta 6
Pregunta
Substrate molecules bind to Enzymes active sites
Respuesta
- True
- False
Pregunta 7
Pregunta
What is chemical energy responsible for?
Respuesta
-
Chemical energy determines how active certain chemicals in your bloodstream are
-
Providing living cells with energy from food
-
Providing the energy the body needs to regulate the amount of chemicals in the body.
-
All of the above
Pregunta 8
Pregunta
What is encode?
Respuesta
-
one must attend
-
one must review
-
one must rehearse
Pregunta 9
Pregunta
What does it mean to consolidate?
Respuesta
-
One must review
-
One must attend
-
One must rehearse
Pregunta 10
Pregunta
Which of the following is NOT a component of the Unified Cell Theory?
Respuesta
-
All living things are composed of one or more cells
-
All new cells arise from existing cells
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A network of protein fibers that maintain the shape of the cell
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The cell is basic unit of life (the smallest entity that can be “living”)
Pregunta 11
Pregunta
Which of the following is NOT a component of Plasma Membrane
Respuesta
-
Cholesterol
-
Proteins
-
Carbohydrates
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Ribosomes
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Phospholipids
Pregunta 12
Pregunta
Which of the following does not stand true for Membrane Functions and molecules that perform functions:
Respuesta
-
Carbohydrates→ “identification tags” showing type of cell and whether it belongs in organism
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Proteins→ “doors” and “pumps” for transporting molecules in or out of the cell
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Cholesterol→ gives stability to fluid membrane of animal cells and responds to temperature conditions in the cell’s environment
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Ribosomes→ a minute particle consisting of RNA and associated proteins, found in large numbers in the cytoplasm of living cell
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Osmosis→ diffusion of water molecules across a permeable membrane
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Flows from high to low→ molecules, from high to low concentration
Pregunta 13
Pregunta
Which of the following does NOT require energy?
Respuesta
-
Sugars flowing through protein channels from high blood levels to low levels in brain cells
-
Movement of sodium ions from low concentration outside a cell to higher concentration inside a cell
-
Moving fat or lipid molecules from low concentration in the blood to high concentration in fat storage cells
Pregunta 14
Pregunta
Which of the following DOES require energy?
Respuesta
-
Flow of oxygen-rich red bloods cells, to oxygen-starved muscle cells during exercise
-
Diffusion of water or gases through the membrane.
-
Moving fat or lipid molecules from low concentration in the blood to high concentration in fat storage cells
Pregunta 15
Pregunta
-In all the cases below, blood sugar (glucose) is flowing into a cell, through a channel protein in the cell membrane.
In which case will the flow of sugar be fastest?
Respuesta
-
Sugar concentration outside the cell: 10%. Sugar concentration inside the cell: 3%
-
Sugar concentration outside the cell: 6%. Sugar concentration inside the cell: 3%
-
Sugar concentration outside the cell: 10%. Sugar concentration inside the cell: 9%
Pregunta 16
Pregunta
Catabolic pathway: [blank_start]large[blank_end]→[blank_start]small[blank_end] (energy out, exits; exergonic)
Respuesta
-
large
-
small
Pregunta 17
Pregunta
Anabolic pathway: [blank_start]small[blank_end]→[blank_start]large[blank_end] (energy in, enters; endergonic)
Respuesta
-
small
-
large
Pregunta 18
Pregunta
Thermodynamics: Takes in [blank_start]calories[blank_end]→comes out as heat or makes you move, grow, etc.
Respuesta
-
calories
Pregunta 19
Pregunta
Prokaryote is [blank_start]bacteria[blank_end]
Respuesta
-
bacteria
Pregunta 20
Pregunta
Eukaryote is a [blank_start]virus[blank_end]
Respuesta
-
virus
Pregunta 21
Pregunta
Which type of energy is stored within the bonds of all the food molecules we eat?
Respuesta
-
Heat Energy
-
Potential Energy
-
Light Energy
-
Kinetic Energy
Pregunta 22
Pregunta
What is chemical energy responsible for?
Respuesta
-
Providing the energy the body needs to regulate the amount of chemicals in the body.
-
Providing living cells with energy from food
-
Chemical energy determines how active certain chemicals in your bloodstream are
-
All of the above
Pregunta 23
Pregunta
Which type of energy is stored within the bonds of all the food molecules we eat?
Respuesta
-
Heat Energy
-
Potential Energy
-
Light Energy
-
Kinetic Energy
Pregunta 24
Pregunta
Heat Energy→ [blank_start]unused[blank_end] energy that is created as a byproduct of energy transfers and transformations
Respuesta
-
unused
Pregunta 25
Pregunta
What is energy required for? Choose an answer
Respuesta
-
Sleep
-
Synthesis & breakdown of molecules
-
Heavy labor & exercise
-
All of the above
Pregunta 26
Pregunta
Bioenergetics→ concept of [blank_start]energy[blank_end] flow through living systems like cells
Respuesta
-
energy
Pregunta 27
Pregunta
Passive transport: [blank_start]No Energy[blank_end] needed: When things flow from high to low (water pressure, air pressure, water elevation, electricity)
Respuesta
-
No Energy
Pregunta 28
Pregunta
Active transport: [blank_start]Energy needed[blank_end]: When things are pumped from low to high (concentration, charge, pressure)
Respuesta
-
Energy needed
Pregunta 29
Pregunta
Osmosis: Diffusion of [blank_start]water[blank_end] across permeable membrane
Respuesta
-
water
Pregunta 30
Pregunta
Contractile Vacuoles: Squeeze excess water out of a [blank_start]cell[blank_end] so it does not explode
Respuesta
-
cell
Pregunta 31
Pregunta
Diffusion: movement of particles from [blank_start]high[blank_end] to [blank_start]low[blank_end]
Respuesta
-
high
-
low
Pregunta 32
Pregunta
2nd Law of Thermodynamics→ Energy transports are never 100% efficient
Respuesta
- True
- False
Pregunta 33
Pregunta
Thermodynamics: Takes in calories→comes out as heat or makes you move, grow, etc.
Respuesta
- True
- False
Pregunta 34
Pregunta
1st Law of Thermodynamics→ states that the total amount of energy in the universe is constant and conserved; i.e. there has always been and will always be exactly the same amount of energy in the universe
Respuesta
- True
- False
Pregunta 35
Pregunta
Catalyst- Breaks things up , shoves them together
Respuesta
- True
- False
Pregunta 36
Pregunta
Enzyme: A protein with a certain region called active site, will grab a particular molecule(substrait), will break up the molecules so that it could absorb into enzyme
Respuesta
- True
- False
Pregunta 37
Pregunta
Enzymes are not catalysts
Respuesta
- True
- False
Pregunta 38
Pregunta
Potential Energy→ the energy in the motion of the object
Respuesta
- True
- False
Pregunta 39
Pregunta
Kinetic Energy→ the energy in the motion of the object
Respuesta
- True
- False
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