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
lukranit [14]
3 years ago
13

20 POINTS!!!! PLEASE ANSWER, QUICK!!!

Biology
1 answer:
Nataliya [291]3 years ago
4 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 enzyme and the key is the substrate. Only the correctly sized key (substrate) fits into the key hole (active site) of the lock (enzyme).

Smaller keys, larger keys, or incorrectly positioned teeth on keys (incorrectly shaped or sized substrate molecules) do not fit into the lock (enzyme). Only the correctly shaped key opens a particular lock. This is illustrated in graphic on the left.

Hope this helps

You might be interested in
After playing in an old shed, two boys tell their mother that they hurt all over. She checks and finds that they both have fever
irina1246 [14]

Answer:

Considering the boys' situation, the boys live in the rural areas of one of the western United States, e.g. California.

Explanation:

Hantavirus is spread by rodents and is most common in rural areas of the western United States during the spring and summer months.  Hantavirus pulmonary syndrome also occurs in South America (especially in Argentina, Chile, Uruguay, Paraguay, Brazil, and Bolivia).  Hantavirus cases have also occurred in Canada and some parts of Asia, where they reportedly caused kidney disorders rather than lung problems.

5 0
3 years ago
Angiosperms do not need water for fertilization. Why? (3 points) Group of answer choices Flagellated sperm travel to the ovary i
astraxan [27]

Answer:

A pollen tube grows from the pollen grain into the ovary

Explanation:

Water is needed for fertilization in several plant groups because the sperm needs to swim to meet the non-motile eggs of the female organs.

<em>However in angiosperms, the pollen germinates and a structure known as pollen tube which contains the male gametophyte (sperm) grows into the ovary where the ovule is located and the male gametophyte is deposited in the ovule to initiate the fertilization process.</em>

<em>Hence, water is really not necessary for fertilization in the angiosperms.</em>

5 0
3 years ago
Read 2 more answers
How does being a self directed learner affect a person's health literacy?
Free_Kalibri [48]
Being a self-directed learner is a component of becoming a health literate person. Health literacy is a primary determinant of an individual’s ability to independently navigate the health care system.  Self-directed learning a necessary skill for survival. Health literacy helps you to improve and make you a healthy decision.
6 0
3 years ago
Read 2 more answers
Can someone help me to write conclusion about nervous system in human
Svetradugi [14.3K]
Conclusion this is how the nervous system in human 
3 0
3 years ago
Read 2 more answers
25 POINTS!!!!!! A person is complaining of lightheadedness. Which of the following could be a possible cause?
melomori [17]
<span>I think it would be A.) Anemia, reducing the delivery of oxygen to the brain </span>
4 0
3 years ago
Read 2 more answers
Other questions:
  • Coal is used to produce energy. The harmful gases produced by coal are cleaned up by a method which needs a large amount of lime
    13·1 answer
  • What are cell membranes nade out of
    11·2 answers
  • For plants and other organisms to develop differences among their respective species the alleles of their genes must contain var
    14·1 answer
  • I need help , check the highlighted words , thank you ✌.
    10·1 answer
  • Which describes the notation Tt for the trait of being tall?
    14·2 answers
  • What is made up of a phosphate a sugar and a base?
    10·2 answers
  • How the inner ear is responsible for feeling dizzy?
    13·2 answers
  • E
    9·2 answers
  • Anti-malarial drugs kill the parasites in the blood but they do not cure the disease. That because;
    5·1 answer
  • Which of the following is true about cells?
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!