BIO 256 FINAL EXAM everything covered 2024/2025 (896 questions and complete solutions Graded A+)
5 views 0 purchase
Course
Cell Biology
Institution
Cell Biology
BIO 256 FINAL EXAM everything covered 2024/2025 (896 questions and complete solutions Graded A+)
BIO 256 FINAL EXAM everything covered 2024/2025 (896 questions and complete solutions Graded A+)
BIO 256 FINAL EXAM everything covered 2024/2025 (896 questions and complete solutions Graded A+)
BIO 2...
BIO 256 FINAL EXAM everything
covered 2024/2025 (896 questions and
complete solutions Graded A+)
BIO 256 FINAL EXAM everything
covered 2024/2025 (896 questions and
complete solutions Graded A+)
Fatty acids used for energy are first broken into - ANSWER- Mitosis makes diploid
daughter cells, and meiosis makes haploid daughter cells.
What is the major cause underlying the rapid aging disease, Progeria? - ANSWER- A
single nucleotide change in the LMNA gene sequence leads to an error in mRNA
splicing and a defective nuclear protein.
both redox reactions and energy coupling through the hydrolysis of ATP can drive
unfavorable reactions forward. - ANSWER- Some metabolic reactions that may not be
independently energetically favorable in the human body may still proceed to a final
product because:
When the body is under stress, including during heavy exercise, blood must continue to
flow to vital organs. The two most vital organs are the - ANSWER- Brain and heart
When cells move substances into vesicles in the cytoplasm, it is called - ANSWER-
endocytosis
The"lock-and-key model" of enzyme function describes the - ANSWER- specific fit of a
substrate to its particular enzyme.
What could you observe in a cell making a lot of one certain protein, if you used an
electronmicroscope? - ANSWER- polyribosomes in the cytoplasm
Transfer RNAanticodons pair complementarily to the ______ of mRNA. - ANSWER-
codons
The RNA typed haracterized by folding on itself to form a twisted cloverleaf structure
withan attached amino acid is called - ANSWER- tRNA
Which consists of a single strand of nucleotides? - ANSWER- RNA
Which is NOT a function of proteins? - ANSWER- provides genetic code
,BIO 256 FINAL EXAM everything
covered 2024/2025 (896 questions and
complete solutions Graded A+)
Secondary structure - ANSWER- The coiling of the protein chain backbone into an
alpha helix is referred to as the:
In the structure of a protein or its subunits, the symbol N stands for nitrogen and the
symbol R stands for - ANSWER- residue or rest of the molecule, any functional group of
an amino acid.
The molecule central to all metabolism is - ANSWER- glucose
A solution resisting changes in H+ concentration and tending to maintain a stable pH is
called a ____ solution. - ANSWER- buffer
Cations have a ____charge and are formed when they have ____ an electron to/from
an anion. - ANSWER- positive, donated
Water absorbs and releases large amounts of heat before changing temperature. This
is important in - ANSWER- maintenance of body temperature
Which organ would get the least blood flow during the running of a marathon? -
ANSWER- small intestine
extracellular - ANSWER- Any water not contained within the cells is said to be part of
the body's _____ compartment.
In a negative feedback loop used to maintain homeostasis, which of the following terms
is NOT likely to be used? - ANSWER- hypothesis
Which would be anormal measure of potassium in venous blood? - ANSWER- 16 meq/L
Which of the following statements is true concerning feedback mechanisms? -
ANSWER- Negative feedback mechanisms work to prevent sudden severe changes
within the body.
Your physiological status would be greatly improved if you were to remove all
cholesterol from your body. - ANSWER- False
Which cofactor is associated with the conversion of double carbon-carbon bonds to
single bonds? - ANSWER- FAD
Movement of water through a cell membrane, rather than solute, is called - ANSWER-
osmosis
,BIO 256 FINAL EXAM everything
covered 2024/2025 (896 questions and
complete solutions Graded A+)
The favored fuel of the brain is - ANSWER- glucose
An atom or molecule has been oxidized when - ANSWER- it has lost some of its
electrons
Which is NOT a function of membranes? - ANSWER- storage of glycogen
Polyribosomes are seen in cells - ANSWER- making a lot of one certain protein.
Anticodons would befound in - ANSWER- tRNA
RNA is made by ____;protein is made by ____. - ANSWER- transcription, translation
Which contains your genetic inheritance from your parents - ANSWER- DNA
Which of the following proteins is composed of four polypeptides and has quaternary
structure? - ANSWER- Hemoglobin
There are 20 amino acids in proteins and they differ by their - ANSWER- side chain (-R)
Buffers keep ___ constant in our bodies - ANSWER- pH
Which release OH- in water? - ANSWER- bases
Water is anespecially good solvent for biological molecules because it is - ANSWER-
polar
Which is a major element of the human body - ANSWER- oxygen
Which is NOT an individual's survival need? - ANSWER- reproduction
In positive feedback... - ANSWER- the response of the system amplifies the input
response
Which body fluid compartment drains fluid from between cells, returning it to the blood?
- ANSWER- lymph
When stress limits resources for organs, which organ receives top priority for receiving
blood? - ANSWER- brain
Which is a trace element of the human body? - ANSWER- copper
, BIO 256 FINAL EXAM everything
covered 2024/2025 (896 questions and
complete solutions Graded A+)
Which is an inorganic molecule? - ANSWER- NaCl
Which would form an electrolytic solution when dissolved in water? - ANSWER- sodium
chloride
Table sugar, sucrose, is composed of - ANSWER- glucose and fructose
What is NOT a reason why you and your cells age? - ANSWER- genes shorten until
they no longer function
"universal energy carrier" - ANSWER- ATP
NAD is - ANSWER- a coenzyme
Enzyme allosteric sites can be important to the overall outcome of a metabolic pathway
because - ANSWER- they can serve as a regulator of the active site, leading to the
possibility of negative or positive feedback in a pathway
to obtain metabolic energy from glycogen, you must first - ANSWER- break the
molecule into glucose units
Each Acetyl CoA molecule that enters the Krebs cycle produces? - ANSWER- 3 NADH
2 CO2
1 H+
1 ATP
1 FADH2
When glucose is catabolized under _____ conditions, pyuvates will lose a carbon. Then
the acetate made will cross the mitochondrial wall and enter the Krebs cycle. -
ANSWER- aerobic
To obtain metabolic energy from glycogen, you must first - ANSWER- break the
molecule into glucose units
Which organs can obtain metabolic energy from lactic acid? - ANSWER- heart and liver
Ion channels in a cell membrane permit the selective passage of - ANSWER- Na+ and
K+
When a gated channel opens in response to a stimulus, allowing sodium ions to flow
with their concentration gradient into a cell, this is an example of - ANSWER- faciliated
diffusion
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller BestTutor001. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $13.49. You're not tied to anything after your purchase.
