100% satisfaction guarantee Immediately available after payment Both online and in PDF No strings attached
logo-home
BCH Final Exam questions well answered graded A+ passed $21.49   Add to cart

Exam (elaborations)

BCH Final Exam questions well answered graded A+ passed

 9 views  0 purchase
  • Course
  • BCH
  • Institution
  • BCH

BCH Final Exam questions well answered graded A+ passed

Preview 4 out of 33  pages

  • October 12, 2024
  • 33
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers
  • BCH
  • BCH
avatar-seller
Sakayobako30
BCH Final Exam

what is metabolism - correct answer ✔✔- the entire network of biochemical reactions that occur in
living cells



__________________ metabolism is often defined as those reactions involving low molecular weight
biomolecules - correct answer ✔✔intermediary



what are metabolites - correct answer ✔✔small molecule intermediates in the degradation or
biosynthesis of biopolymers



metabolites can be the ______________, _________________________, and the
____________________ of a given metabolic pathway - correct answer ✔✔substrates, reaction
intermediates, and the products



reactions that result in the production of macromolecules are called ____________________ and
require _________________ - correct answer ✔✔anabolic reactions

energy in the form of ATP



what are the precursor molecules used to form macromolecules through anabolic reactions - correct
answer ✔✔amino acids, sugars, fatty acids, and nitrogenous bases



anabolic reactions are typically _______________ reactions - correct answer ✔✔reduction



catabolic reactions are typically ______________ reactions - correct answer ✔✔oxidation



energy is _____________ in catabolic reactions - correct answer ✔✔produced in the form of ATP



what are some energy containing molecules broken down in catabolic reactions - correct answer
✔✔carbohydrates, lipids and proteins

,what are the energy depleted end products of catabolic reactions - correct answer ✔✔CO2, H2O, and
NH3



a significant amount of genome is committed to ______________

- ____% of _____ in e coli

- _____% of _____ in yeast

-______% of ______ in humans - correct answer ✔✔metabolism

21 of 900

21 of 1200

23 of 5000



metabolic pathways are ____________________

- the product of one reaction _________________

- 3 types of pathways: - correct answer ✔✔sequences of reactions

- serves as the substrate for the next reaction



linear pathway

circular pathway

spiral pathway



______________ metabolic pathway is most frequently used for building biopolymers such as lipids,
nucleic acids, proteins and polysaccharides - correct answer ✔✔spiral pathway



in ____________ metabolic pathways often the same enzyme is used to catalyze the subsequent
reaction to produce an enlarged or elongated product - correct answer ✔✔spiral



what is the benefit of metabolic pathways proceeding via discreet steps - correct answer ✔✔- each step
is catalyzed by a specific enzyme (better control mechanism)

- multiple steps help to control energy input and output (invest a little energy at a time)

,- sharing of intermediates between pathways



regulation of ________________ is essential for the efficiency and ordered flow of metabolism - correct
answer ✔✔enzyme activity



how can enzymes be regulated - correct answer ✔✔- substrate level control

- regulation at committed steps of pathways

--> feedback and feedforward

--> allosteric regulation

- covalent modification



metabolic pathways are _____________ they are located within specific regions, organelles or
membranes of the cell - correct answer ✔✔compartmentalized



what are the advantages of metabolic pathways being compartmentalized - correct answer ✔✔- pools of
metabolites for specific pathways are localized and concentrated at specific sites in the cell

- allows for opposing metabolic pathways to occur at the same time (fatty acid synthesis in the cytosol
and breakdown in the mitochondria)

- allows coordinated regulation of the individual reactions

- allows spatial organization of a seqence of reactions

- specialization of tissues allow division of labor and for better efficiency and site specific regulation



Cofactors can be divided into ________________ and _______________ - correct answer ✔✔essential
ions and coenzymes



essential ions can be divided into ____________ and ______________ - correct answer ✔✔activator
ions (loosely bound)

metal ions of metalloenzymes (tightly bound)



coenzymes can be divided into ________________ and __________ - correct answer ✔✔cosubstrates
(loosely bound)

, prosthetic groups (tightley bound)



examples of activator ions - correct answer ✔✔cation: K+, Ca2+, Mg2+



examples of metal ions of metalloenzymes - correct answer ✔✔Iron-sulfer cluster

2 Fe- 2S or 4Fe-4S



examples of cosubstrates - correct answer ✔✔ATP

NAD+

NADP+

coenzyme A

ubiquinone



examples or prosthetic groups - correct answer ✔✔heme group

FAD

FMN



how do iron sulfur clusters bind to enzymes - correct answer ✔✔through the S atoms in Cysteine
residues



what is the major metabolic role of ATP - correct answer ✔✔transfer of phosphoryl or nucleotidyl groups



what is the major metabolic role of NAD+ and NADP+

vitamin source? - correct answer ✔✔oxidation-reduction reactions involving two electron transfer

niacin (B3)



what is the major metabolic role of Coenzyme A

vitamin source? - correct answer ✔✔transfer of acyl groups

pantotenate (B5)

The benefits of buying summaries with Stuvia:

Guaranteed quality through customer reviews

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

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

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 Sakayobako30. Stuvia facilitates payment to the seller.

Will I be stuck with a subscription?

No, you only buy these notes for $21.49. You're not tied to anything after your purchase.

Can Stuvia be trusted?

4.6 stars on Google & Trustpilot (+1000 reviews)

72042 documents were sold in the last 30 days

Founded in 2010, the go-to place to buy study notes for 14 years now

Start selling
$21.49
  • (0)
  Add to cart