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
andrezito [222]
2 years ago
13

The lock-and-key mechanism refers to a) the complementary shapes of an enzyme and a substrate. b) the attractive forces between

an enzyme and a substrate. c) the ability of an enzyme to lower the activation energy of a reaction. d) the ability of an enzyme to “unlock” the products of a reaction.
Biology
1 answer:
podryga [215]2 years ago
8 0

Answer:

A. The complementary shapes of an enzyme and a substrate

Explanation:

The Lock-and-Key model was made to show how an enzyme's active zone fits a substrate and how they bond together. It correlates just like a lock and a key; you have to have the correct-shaped key in order to open a lock. Same process of thought with the enzymes; you must have the same shape for both in order to bind together,

You might be interested in
What is a major difference between facilitated diffusion and active transport?
Novay_Z [31]

Answer:

Major difference between active transport and facilitated difusion is:

Active transport moves substances against the concentration gradient.

Facilitated diffusion moves molecules through the plasma membrane.

Explanation:

  • Active transport involves the transport of molecules against the concentration gradient.
  • Since molecules move from lower concentration to higher concentration this mode of transport needs energy.
  • Facilitated diffusion do not require energy  but need some other molecule or carrier protein to transport the molecules across the membranes.
  • In facilitated diffusion, the molecules move from their region of higher concentration to the region of lower concentration.
8 0
3 years ago
1. Which feature is found in prokaryotic cells but not in eukaryotic cells?
crimeas [40]
The <span>eukaryotic cells do not contain any organelles such a nucleus in particular. The difference in their structures for prokaryotes and eukaryotes will also include the presence of chloroplasts and mitochondria. Also, structures such as cell wall and chromosomal DNA structures are also some of the difference in the two types of cells. The answer to the second question is C. 
</span><span>

</span>
7 0
3 years ago
Which statement best describes the structure of a water moleculee
Vlada [557]
ANSWER
A water molecule consists of one oxygen atom bonded to two hydrogen atoms by covalent bonds. Since oxygen is more electronegative as compared to hydrogen atoms, the shared electrons are attracted towards the oxygen atom. This imparts partial negative charge to the oxygen atom and partial positive charge to hydrogen atoms. The overall effect is making the water molecular a polar one. The presence of free hydrogen atoms makes water molecule to form hydrogen bonds with other water molecules and with other polar molecules.

explanation: what i found on google
8 0
2 years ago
Scenario:
vagabundo [1.1K]

Answer: i know the answer but i just cant think off the top of my head i am sorry i really want to answer though but if i figure it out i will tell you

Explanation:

8 0
2 years ago
What experimental evidence was provided for the nuclear model of the atom?
Irina-Kira [14]
Alpha particles bouncing off gold foil in Rutherford's gold-foil experiment which developed the understanding of the structure of the atom, expanding upon Thomson's research with cathode rays. 
3 0
3 years ago
Read 2 more answers
Other questions:
  • The desert can be a harsh environment, with extreme heat during the day and cold during the night. Also, there is very little ra
    7·1 answer
  • Were green algae the first plants
    6·1 answer
  • What is the scientific name of frog
    5·2 answers
  • 1.   Most land vertebrates can't drink seawater because 
    6·1 answer
  • What is the best explanation for species diversifying to fill each new niche
    14·1 answer
  • Which principle states that animals succeed each other in a definite sequence?
    11·2 answers
  • Which group of bacteria is most likely responsible for stew fish spoilage in Anastacia's refrigerator cooler?
    14·1 answer
  • How is inertia taking place if a penny is at rest?
    12·1 answer
  • Which of the following are mainly cycled through the processes of photosynthesis and cellular respiration?
    6·1 answer
  • What is the sequence of events that occur in order for the posterior lobe of the pituitary gland to release hormones into the bl
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!