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sweet [91]
3 years ago
8

You incubate isolated intact mitochondria in a buffered solution containing succinate (an oxidizable substrate) and ADP plus Pi.

Upon adding cyanide (an inhibitor of Complex IV, cytochrome c oxidase), you examine the effect on oxygen consumption and the production of ATP. What will occur?
Biology
2 answers:
telo118 [61]3 years ago
8 0

Answer:

No Oxygen will be consumed, and there will also be no ATP production.

Explanation:

No Oxygen will be consumed, and there will also be no ATP production.

The blockage of  the binding of Oxygen with cytochrome C enzyme occurs, and this greatly decreases the cellular uptake of oxygen.

Therefore, in the presence of cyanide, ATP production is inhibited due to blocked oxygen utilization.

Nitella [24]3 years ago
4 0

Answer: "cyanide interferes with the reduction of oxygen,which decreases the proton gradient and ATP production."

Explanation:

The electron transport chain is an energy converter,transforming chemical energy to the energy of a proton gradient.As electrons flow along their energy gradient,some of the energy used by each complexes(NADH dehydogenase,cytochrome b-c1 and cytochrome oxidase a-a3) to pump proton from the mitochondrial matrix into the intermembrane space.This creates a proton gradient which in turn drives them back across inner membrane through ATP synthase,which uses the energy of H+ flow to synthesize ATP from ADP and Pi.

When cyanide is added,it inhibits cytochrome c,one of the complexes responsible to transfer electrons along the chain.Hence electron transport chain will become nonfunctional.Oxygen will not be reduced.And since the electron transport chain will be nonfunctional,no proton gradient will be available to drive ATP synthase to synthesize ATP from ADP and Pi, so no ATP will be produced.

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enyata [817]
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5 0
3 years ago
Mitochondria are like kidneys in that they filter out waste
klio [65]
That should be the cell membrane. The cell membrane acts as a filter in and out.
7 0
3 years ago
Read 2 more answers
Please someone who is good at biology I need help asap
statuscvo [17]

I won’t be willing to eat this altered genetically crops because they are much harmful to humans. For example some links term genetically crops do gluten disorders that affect millions of Americans. Again there are multiple toxins which are from genetically altered crops which detect in real and fetal blood.

Negatives.

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Genetically altered crops can cause modified corn to rat tumours.

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6 0
3 years ago
Arrange the events in the life cycle of mosses in the flowchart below. Start the life cycle with the mature sporophyte stage in
labwork [276]

Answer:

Life cycle of a moss

Explanation:

LIFE CYCLE OF A MOSS FROM MATURED SPOROPHYTE STAGE

An embryo further develops into a pear-shaped  sporangium, which is the *sporophyte  stage of the plant*. The sporangium  contains spore sacs, each of which is the spore mother cell that undergoes meiotic division  to form four spores,The spores are released and germination

takes  place giving  rise to a protonema, which develops into a new gametophyte plant. The gametophyte  generation or haploid phase of the moss is from the production  of haploid spores after meiosis  to the period just before fusion of the haploid antherizoid or haploid ovum. The sporophyte generation or diploid  phase is from the diploid  mother cells just before meiosis.

Examples of moss plants include Funaria hygrometrica, Polytrichum commune, Barbuda Indica.

8 0
3 years ago
Gene expression in eukaryotes can be regulated at many different levels. List the different levels of regulation, and explain wh
Aneli [31]

Answer:

Transcription, mRNA (processing, transport, localization and stability), translation.

Explanation:

  • Transcription is regulated in two levels, though chromatin regulation (methylation and acetylation) to loose or increase histone's affinity to DNA and through cis and trans elements such as promoters, enhancers, and silencers (cis) to active/deactivate and RNA polymerase and transcription factors and co-factors (trans).
  • mRNA can be regulated using poly-A tails or 5'-caps to shorten or give them more time before they degrade, it could also be spliced to eliminate introns.
  • In the translation stage, the regulation occurs during the initiation through a scanning procedure that ensures the 40s ribosomal subunit bind correctly to the untranslated portion of RNA

Hope this information is useful to you!

4 0
3 years ago
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