1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Alex73 [517]
3 years ago
15

If you were to expose cells that are undergoing aerobic cellular respiration to a radioactive oxygen isotope in the form of O2,

which of the following molecules would you expect to be radiolabeled? (A). pyruvate (B). water (C). NADH (D). CO2
Biology
1 answer:
HACTEHA [7]3 years ago
5 0

Answer:

Water

Explanation:

Molecular oxygen is the terminal electron acceptor and serves to receive electrons from reduced NADH and FADH2 to reoxidize them. NADH and FADH2 are formed during glycolysis and Kreb's cycle. These reducing powers should be re-oxidized to enter in the first two steps of aerobic respiration again.

For the purpose, NADH, and FADH2 transfer their electrons to the molecular oxygen via electron transport chain. After accepting the electrons, molecular oxygen is oxidized into the water molecule. Therefore, radioactive oxygen isotope would appear in the form of a water molecule after completion of cellular respiration.

You might be interested in
Carbon-14 has a half-life of 5730 years. A sample of wood has been recovered by an archaeologist. The sample is sent to a labora
givi [52]

Answer: 4282.928 = 4283 years

Explanation:

Data given;

Carbon 14 half life = 5740

No (initial radiation) = 0.230 Bq/g

Nf (final radiation) = 0.137 Bq/g

First we find the decimal fraction of the remaining half life of the carbon 14

k = No / Nf

k = (0.137 / 0.230) = 0.595652

So to find how many half-life has elapsed, we say

(1/2)^n = k

(1/2) ^n = 0.595652

Therefore

n log 0.5 = log 0.595652

n = ( log 0.595652) / ( log 0.5)

n = 0.747457

To get the elapsed time or how old the sample is;

We say

Carbon 14 half-life × n

5730 yrs × 0.747457

= 4282.928

= 4283 years.

So the sample of the wood is 4283 years old.

4 0
3 years ago
Which is most likely to help an introduced species become invasive
Andrew [12]

The answer to your question is Great Tolerance to a wide range of conditions. Thanks;)


8 0
3 years ago
Organisms that can't live in the presence of oxygen are called facultative anaerobes.
AlexFokin [52]

Answer:

False

Explanation:

Facultative anaerobes are organisms that can grow in both the presence or absence of oxygen.

Organism that suffer a poisonous reaction or that can't live in the presence of oxygen are called obligate anaerobes.

3 0
3 years ago
What results when a type a patient receives a transfusion of type b blood?
aleksley [76]
Since they are not the same type they would be incompatible and this would cause you're immune system to attack the new blood cells and destroy them. Also known as ABO. Rate this the brainiest please. Thanks.
7 0
3 years ago
Why do different biomes have different characteristic organisms?
Lady bird [3.3K]

Because the different environments permit some organisms to thrive, while others cannot. ... Similarly, a fish (extremely suited to its aquatic environment) can't survive out of water. A characteristic which allows growth in one environment will not necessarily allow growth in another.


3 0
3 years ago
Other questions:
  • The Moon's phase is waning when it changes from
    14·1 answer
  • Why are plants green? In photosynthesis, chlorophyll molecules act as solar antennae, so that when sunlight strikes them their e
    6·1 answer
  • How many planets are there in the solar system?
    15·2 answers
  • The primary function of protein in the diet is to serve as
    5·1 answer
  • How do traits occur in organisms?
    5·1 answer
  • 16) Cells that elongate their cell walls prior to septation and septate in parallel planes will form
    9·1 answer
  • What changes when a cell divides into two daugther cells to make it easier for the cells to exchange materials across the surfac
    5·2 answers
  • HELP MEEE,!!!!! PLEASE
    10·2 answers
  • What are similarities and differences between insects that go through complete metamorphosis and incomplete metamorphosis?
    14·1 answer
  • Joanna is culturing bacteria for her class's investigation. She makes sure to incubate the cultures at no higher than 25°C. The
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!