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
Katen [24]
3 years ago
14

9. Natural selection explains how ______ change as their environments

Biology
1 answer:
Novosadov [1.4K]3 years ago
6 0

Answer:

In natural selection, genetic mutations that are beneficial to an individual's survival are passed on through reproduction. This results in a new generation of organisms that are more likely to survive to reproduce. ... The process carries on generation after generation.

Explanation:

You might be interested in
Does this look correct?<br><br> (second image is the word bank)
Vilka [71]
It looks correct to me. Good job
4 0
2 years ago
What is a difference between a waxing crescent and a waning gibbous
slega [8]

Answer:

But what does “waxing and waning gibbous” mean? Rob says crescent is when you can see less than half of the moon illuminated. “Gibbous, you attach that to either waxing or waning when you see more than half of the moon illuminated,” he said. Waxing means it's getting bigger while waning means it's getting smaller.

3 0
2 years ago
Read 2 more answers
Once a neuron is stimulated and the membrane potential is depolarized, the depolarized axonal membrane is helped to return to it
Vadim26 [7]

Answer:

Explanation:

The cell membrane separates the cell from the outer environment. The extracellular fluid contains the sodium ions (Na+), chloride ions (Cl-), while intracellular fluid contains potassium (K +) and negative anions.

The potential difference arises when the membrane is selectively permeable to some ions. The resting potential is -70mV.  

When the neurons get excited, the sodium ions start to enter by sodium channels.  

Now there are more positive ions inside the cell membrane. It disturbs the resting potential i.e. -70mV. This stage is known as depolarization.

When the inside environment of the cell is more positively charged, the potassium ions start to move out of the cell. It goes out by the voltage-gated channels. Thus resting stage is maintained and it is known as repolarization.

But the initial stability of the cell membrane has to be maintained. To restore the resting stage, the sodium ions start to move out of the membrane and potassium ions enter into the cells again. This is an active transport and has done by the Na+ - K+ pump. Here 3 sodium ions move out and 2  potassium ions pumped into the cell through the plasma membrane.  

Thus the resting potential regains. The potassium ions come back into the cells against the concentration gradient and ATP provides the energy for this phenomena.

4 0
3 years ago
Read 2 more answers
The lock-and-key mechanism refers to what
Delvig [45]

Answer: The lock-and-key mechanism is usually associated with the complementary shapes of an enzyme with a single substrate wherein the lock that is being referred to is the enzyme and the substrate is the key. One right sized substrate (key) fits into the active site (key hole) of the enzyme (lock).

3 0
3 years ago
We live between the tropic of Cancer and the equator. There is usually a wide range of temperature between day and night. The so
Allisa [31]
You are a desert biome
8 0
3 years ago
Read 2 more answers
Other questions:
  • What is the purpose of transcription?
    10·2 answers
  • The fertilized egg is implanted in the ______, where it grows into a fetus.
    13·2 answers
  • Can environmental factors affect the coding of genes?
    9·1 answer
  • When a person can move only his or her eyes and brain waves are still present, that person is experiencing:?
    6·2 answers
  • Amylase is a chemical that decomposes starch into maltose and dextrin. Which BEST describes the role of amylase in the human bod
    14·1 answer
  • Plz help me <br> WILL GIVE BRAINLIEST
    8·1 answer
  • Redux reaction apply in respiration
    6·1 answer
  • HI GUYS ........................................................................................................................
    13·1 answer
  • Please help me with the image that I am going to attach! I am very confused
    7·2 answers
  • Pls help me help me pls​
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!