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
Nonamiya [84]
2 years ago
12

Most chemical reactions within cells do not occur spontaneously. Instead, they need a catalyst to get them started. Why do you t

hink this is so?​
Biology
1 answer:
Tasya [4]2 years ago
5 0

Answer:

A catalyst is a chemical involved in, but not changed by, a chemical reaction. Many enzymes function by lowering the activation energy of reactions. By bringing the reactants closer together, chemical bonds may be weakened and reactions will proceed faster than without the catalyst.

You might be interested in
Which describes the process of fermentation?
xxMikexx [17]

Explanation:

<u>anaerobic process that restores NAD+ supply </u>

<u></u>

Within cells, aerobic respiration may not occur due to several factors:

  • - a lack of inorganic, final electron acceptors
  • -incomplete or lack of a complete electron transport system
  • -missing genes for enzymes within the Kreb's cycle

Thus, they utilize other means for the generation of energy in the form of ATP and to replenish NAD+ an oxidized form of NADH, the main electron carrier in glycolysis. Pyruvate is produced in the cytoplasm via glycolysis- it is also used as an electron acceptor in a process called fermentation.

Further Explanation:

overall: C6H12O6 (glucose) + 6 O2 → 6 CO2 + 6 H2O + ≈38 ATP

In all eukaryotic cells mitochondria are small cellular organelles bound by membranes, these make most of the chemical energy required for powering the biochemical reactions within the cell. This chemical energy is stored within the molecule ATP which is produced. Respiration in the mitochondria utilizes oxygen for the production of ATP in the Krebs’ or Citric acid cycle via the oxidization of pyruvate( through the process of glycolysis in the cytoplasm).

Oxidative phosphorylation describes a process in which the NADH and FADH2 made in previous steps of respiration process give up electrons in the electron transport chain these are converted it to their previous forms, NADH+ and FAD. Electrons continue to move down the chain the energy they release is used in pumping protons out of the matrix of the mitochondria.

This forms a gradient where there is a differential in the number of protons on either side of the membrane the protons flow or re-enter the matrix through the enzyme ATP synthase, which makes the energy storage molecules of ATP from the reduction of ADP. At the end of the electron transport, three molecules of oxygen accept electrons and protons to form molecules of water...

  • Glycolysis: occurs in the cytoplasm 2 molecules of ATP are used to cleave glucose into 2 pyruvates, 4 ATP and 2 electron carrying NADH molecules. (2 ATP are utilized for a net ATP of 2)
  • The Citric acid or Kreb's cycle: in the mitochondrial matrix- 6 molecules of CO2 are produced by combining oxygen and the carbon within pyruvate, 2 ATP oxygen molecules, 8 NADH and 2 FADH2.
  • The electron transport chain, ETC: in the inner mitochondrial membrane, 34 ATP, electrons combine with H+ split from 10 NADH, 4 FADH2, renewing the number of electron acceptors and 3 oxygen; this forms 6 H2O, 10 NAD+, 4 FAD.

Learn more about cellular life at brainly.com/question/11259903

Learn more about cellular respiration at brainly.com/question/11203046

#LearnWithBrainly  

6 0
3 years ago
Which group of organisms can be considered a population
inna [77]

Answer: Is a group of organisms of the same species that interbreed for example a group of robins in North America

5 0
3 years ago
Read 2 more answers
What is the superior, broad border of the heart called?.
Tamiku [17]

Answer:

Left ventricle

Explanation:

I think the left ventricle is propably superior and broad border of the simply because it pumps blood and other usefull products from the heart to furthest parts of the body

7 0
2 years ago
Which disorder is characterized by the following: a pattern of recurring thoughts or behavior, such as repeatedly checking if th
IgorLugansk [536]
Well, It's either OCD or PTSD... Depending on what the person has gone through in the past, it could be PTSD, PTSD would be caused by being traumatized by something, Like if I got robbed, i would check if my doors are locked. 
6 0
3 years ago
Read 2 more answers
Cognition is best described as: a) a reversible and normal suspension of consciousness. b) recognizing, processing, planning, an
Burka [1]

Answer:

Recognizing, processing, planning, and responding to stimuli.

Explanation:

Cognition may be defined as the process or mental action that helps in acquiring knowledge and understanding something. This might encompasses  the intellectual functions as well.

The main aim of cognition is recognition or to recognize some thing. After recognizing the individual must have the ability to process the information and must have proper plan to use this information. The individual then can respond to that particular stimuli after the proper cognition.

Thus, the correct answer is option (b).

4 0
2 years ago
Other questions:
  • Match each statement below to the correct scientist.
    13·1 answer
  • A fossil of a fern and other large-leafed plants were found in an area of Alaska. What does this suggest about this area in Alas
    15·2 answers
  • Which process makes it possible for all the major organs of the body to be formed by week 10 of human
    13·2 answers
  • Is the cell in the diagram Eukaryota or prokaryotic? Explain your answer using the defining characteristics of cells. Mention st
    5·1 answer
  • 7)
    15·1 answer
  • My question is how do I solve #5? Also can someone explain what F1 &amp; F2 generations are?
    14·1 answer
  • What is the function of the nucleus in plant and animal cells? A. Produces all the power of the cell B. Creates proteins within
    12·2 answers
  • If a sperm containing 46 chromosomes fused with an egg
    7·1 answer
  • Flu vaccine reccomandations
    14·1 answer
  • PLEASE HELP ME WILL MARK BRAINLIEST LIKE GIVE ME THE REAL ANSWER
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!