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
Citrus2011 [14]
3 years ago
15

Why are enzymes called a lock and key situation

Biology
2 answers:
Bumek [7]3 years ago
6 0
The specific action of an enzyme with a single substrate can be explained using a Lock and Key analogy first postulated in 1894 by Emil Fischer. In this analogy, the lock is the enzymeand the key is the substrate. Only the correctly sized key (substrate) fits into the key hole (active site) of the lock(enzyme).
IRINA_888 [86]3 years ago
5 0

Because enzymes connect to their substrate through a lock-and-key system, where the shape of the substrate and the enzyme has to fit like puzzle pieces. Then only the enzymatic reaction can occur.

You might be interested in
Which molecule is a reactant in the first step and a final product in the fourth step of the Calvin-Benson cycle?
Sveta_85 [38]
CO2molecule is a reactant in the first step and a final product in the fourth step of the Calvin-benson
6 0
3 years ago
hematoma is an open injury that occurs whenever a large blood vessel is damaged and bleeds rapidly. TrueFalse You should never r
lisov135 [29]

Answer:

1. Hematoma is an open injury that occurs whenever a large blood vessel is damaged and bleeds rapidly. False

2. You should never remove an avulsion skin flap, regardless of its size. True

3. When possible, ALS providers should administer IV fluid within 3 minutes after the crushing object is lifted off the body. False

Explanation:

1. It is false because, although is true that a hematoma occurs when you have a large blood vessel damaged, i t is a closed injury, not an open one.

2. It is true, you should never remove an avulsion skin flap, regardless of its size. The avulsion may have a serious infection.

3. It is false  because ALS providers should administer IV fluid before the crushing object is lifted off the body.

3 0
3 years ago
Help me please !I’ll mark you brainly
grigory [225]

Answer:

1 is b

2 is c

3 is either b or c

i don't really remember 4, sorry

Explanation:

4 0
3 years ago
What function group within a cell functions in energy processing
AveGali [126]
What do mitochondria do? Where are they found?

They harvest chemical energy from food & carry out cellular respiration, the conversion glucose to ATP. They are found in cells of eukaryotes, except a few anaerobic protozoans. The ATP generating electron transport system is embedded in the inner membrane (cristae) and chemical reactions occur in compartments between membranes.

What are the functional categories of organelles?

Eukaryotic organelles comprise four functional categories: -manufacture (synthesis of macromolecules and transport within the cell), -breakdown (elimination and recycling of cellular materials - energy processing (conversion of energy from one form to another) -support, movement, and communication (maintenance of cell shape, anchorage, and movement of organelles, and relationships with extracellular environments) All four categories work together as an integrated team, producing the emergent properties at the cellular level.

So in smaller terms, I guess eukaryotic organelles do this.

7 0
3 years ago
Appropriately named, ________ pain oftentimes is not detected until seconds or even minutes after an injury; this is due to the
Arte-miy333 [17]

Appropriately named, <u>slow pain </u>oftentimes is not detected until seconds or even minutes after an injury; this is due to the activation of chemically sensitive pain receptors.

Explanation:

According to physiology of pain, slow pain arises when unmyelinated C fibers of the muscles are activated. This is pronounced as a dull and aching pain and is more diffuse in nature rather than fast pain which are more acute and rapid.

Most of the times this pain will not be detected immediately after the stimulus like an injury but may start slowly.  

Slow pain can also be burning, throbbing or even nauseous. Chronic pain conditions mostly are characterized by slow pain.  

Slow pain is elicited by stimuli like mechanical, chemical or thermal which are received by the chemically sensitive pain receptors on the skin or other organs of the body.

3 0
3 years ago
Other questions:
  • Describe the steps to transcribe an mRNA molecule and use the mRNA molecule to produce proteins.
    12·1 answer
  • .
    13·2 answers
  • adenine,guanine,cytosyne and thymine are the four nitrogenous bases present in the DNA of all organisms.Which scientist discored
    7·1 answer
  • Identify one molecule produced by the mitochondria and explain why it is important to the organism.
    11·1 answer
  • Our existing body of scientific knowledge was developed
    13·1 answer
  • Fungi have an extremely high surface-area-to-volume ratio. What is the advantage of this to an organism that gets most of its nu
    13·1 answer
  • Even though rodents known as sugar gliders and flying squirrels are members of distinctly different groups of organisms and live
    9·1 answer
  • The weight of an astronaut's toolbelt on Mars is _______ its weight on Earth. The toolbelt's mass on Mars is _______ its mass on
    9·1 answer
  • P = Phosphate
    10·1 answer
  • Which statement accurately describes the variables in this study?
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!