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
cricket20 [7]
3 years ago
12

What happens during the Krebs cycle?

Biology
2 answers:
Katena32 [7]3 years ago
7 0
Because for each glucose molecule there are two pyruvic acid molecules entering the system, two ATP molecules are formed. Also during the Krebs cycle<span>, the two carbon atoms of acetyl-CoA are released, and each forms a carbon dioxide molecule.</span>
Rufina [12.5K]3 years ago
3 0

Answer:

Kerb cycle is the pathway through which most of the cellular  energy (required for various metabolic  processes with in a cell)  is produced in the form of energy molecule ATP, NADH and FADH2

Explanation:

In a kerb cycle following happens sequentially -

a) Oxaloacetate (4 carbon compound) receives acetyl group (2 carbon) from acetyl CoA to produce citrate.  

b) Enzyme aconitase act on citrate to convert it into isocitrate who ich is further converted to alpha-ketogluterate thereby releasing one molecule of NADH and CO2  

c) alpha-ketogluterate is further converted into succynl-CoA accompanied by release of one molecule of NADH and CO2

d) ATP id produced while succynl-CoA is converted to succinate which is further converted to fumerate along with reduction of FAD to FADH2

e) Fumerate is then converted to malate and eventually to oxaloacetate by release of NADH

In one Kerb cycle, the end products produced are  

2 × CO2  

1 × ATP

3 × NADH

3 H+

1 × FADH2

You might be interested in
Through what process does water enter the atmosphere from the ocean?
maxonik [38]

B. Evaporation, When water is heated to its boiling point, it becomes water vapor and enters the atmosphere.

6 0
3 years ago
g What are the three basic assumptions of Darwinian evolution? Group of answer choices Presence of phenotypic variation, some ph
enot [183]

Answer:

1- Presence of phenotypic variation

2- some phenotypic variation due to genetic variation

3- the given trait has an impact on fitness  

Explanation:

The evolutionary theory by natural selection proposed by Darwin in his publication “On the origin of species” (1859) is based on a series of assumptions that enable to understand the amazing biodiversity on the Earth. First, individuals are not identical among them, i.e., there exists variation in the traits among the members of a given population, species, etc. Second, phenotypic variation leads to differential survival and reproduction of the organisms that are best fitted to the environment (i.e., competence among the members of the population). Finally, phenotypic traits are passed from generation to generation (i.e., phenotypic variation is inheritable), thereby favoring offspring from parents more adapted to the environment.

3 0
3 years ago
A person with a phenotype of HbSS has sickle cell disease. A person with a phenotype of HbAS allele carries the sickle cell trai
makkiz [27]

The right answer is 1/4.

Two carriers of the disease each have a chance in two to transmit their sick gene ie: 1/2 * 1/2 = 1/4

A genetic disease is said to be autosomal recessive when

The gene involved is carried by an autosome (non-sex chromosome, X or Y in XY system of sexual determination);

The associated phenotype of this trait is recessive (the presence of two identical alleles is essential for the character to be expressed).

One of the two alleles is transmitted by the male gamete, the other by the female gamete.

But being a carrier of the mutation does not necessarily mean being sick, the manifestations of a genetic disease depend on its penetrance and the variability of its expression.

3 0
3 years ago
What is energy crisis?
krok68 [10]

Answer:

is where this is a significant amount of supply of energy to an economy that can be really dangerous to pass the maximum of the energy

5 0
3 years ago
The nurse is teaching a client, who is pregnant for the first time, about the signals that indicate the beginning of labor. whic
Alex73 [517]
Contractions and water breaking!! Hope this helps.
3 0
3 years ago
Other questions:
  • When two plates collide it is at this type of boundary.
    8·1 answer
  • What are interactions species living in the same area called? question 6 options: population density a niche a community biotic
    10·1 answer
  • Science forums matt and monica have been trying to get pregnant for two years. no wonder it is so difficult! they just found out
    15·1 answer
  • Which is the best definition of activation energy?
    12·2 answers
  • Which of the following organisms serve as food for primary consumers?
    5·2 answers
  • Please help i’ll rate you brainliest
    12·1 answer
  • How are valves in the circulatory system similar to sphincters in the digestive system?
    5·1 answer
  • Which religious figure is believed to have been greeted by the Archangel Gabriel and
    12·1 answer
  • Question 19 of 20 :
    6·1 answer
  • The speed of sound is:
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!