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BIO 121 FINAL EXAM LATEST 2024 ACTUAL EXAM TEST BANK 300 QUESTIONS AND CORRECT DETAILED ANSWERS WITH RATIONALES (VERIFIED ANSWERS) |ALREADY GRADED A+$16.99
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BIO 121 FINAL EXAM LATEST 2024/2025
ACTUAL EXAM QUESTIONS AND CORRECT
DETAILED ANSWERS WITH RATIONALES
(VERIFIED ANSWERS) |ALREADY GRADED
A+
In photosynthesis what two things are needed to start the cycle and what are two
products?
H2O is needed to for the light reaction process and CO2 is needed for the calvin cycle within
photosynthesis
Two products of photosynthesis are O2 from the light reactions and sugar from the calvin
cycle
You are living in the late 1800s and you want to find out which wavelengths of light are
most useful for photosynthesis. You have bacteria you are able to see with a microscope
that congregate where there is more oxygen. What would you do to find out which
wavelengths of light are most useful for photosynthesis? What else would you need?
What would you see?
I would need a form of light and different color filters, maybe from a prism in order to
produce different color wavelengths to test which would be most conducive to
photosynthesis. I would see that green wavelengths are least effective but that blue, indigo,
violet & red are the most useful wavelengths for photosynthesis
What is a vesicle?
A membrane sac in transit
What is an endomembrane system?
Membranes of the nucleus, endoplasmic reticulum, golgi apparatus, vesicles, and plasma
membrane
,What are ribosomes?
The site of protein synthesis in all cells; the "dots" in our process flow chart
What is the nucleolus?
Makes the ribosomes
What is the golgi apparatus?
Modifies and packages products form the endoplasmic reticulum
What is the nucleus?
Houses nearly all chromosomes
What is endosymbiosis?
When prokaryotic cells got inside of early eukaryotic cells and became a part of the
eukaryotic cells
Name one structural feature or component shared by both plant and animal cells but not
found in prokaryotic cells
The nucleus
A healthy cell is hypertonic, surrounded by a hypotonic solution. What kind of cell is it
most likely?
A plant cell
Imagine a "U-Tube" shown in class. The water levels are the same in side A and side B
prior to pouring some salt into side B. The selectively permeable membrane allows the
passage of the solvent but not the passage of the solute. What will happen immediately
after the salt, which dissolves easily is poured into side B?
Water moves from side A to side B
What is active transport?
Moves something against its concentration gradient
, If a paramecium swims from a hypotonic environment to an isotonic one, what does it's
contractile vacuole do?
Becomes less active
At equilibrium, describe the flow of solvent molecules through a selectively permeable
membrane
Water moves in both directions across the membranes at equal rates
Which of the following molecules cross easily through biological membranes without the
help of a protein?
Oxygen
What happens during cotransport?
A membrane protein, a cotransporter, transports two different solutes, one down its
concentration gradient and the other against its concentration gradient
What is the first law of thermodynamics?
Energy cannot be created or destroyed
Energy is observed in two basic forms: potential and kinetic. What is an example of
potential energy?
A brick on the top shelf of a closet
What is feedback inhibition?
The end product of a metabolic pathway, when abundant, shuts down the metabolic
pathway by binding to an enzyme crucial to a step early in the pathway
How does ATP generally energize a cellular process?
By transferring a phosphate group to another molecule
What are some facts about enzyme inhibitors?
Attach to the enzyme changing its shape and blocking the active site
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