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
Stella [2.4K]
3 years ago
9

What chemical ion is responsible for initiating the contraction of a muscle fiber?

Biology
1 answer:
Semenov [28]3 years ago
4 0
Calcium ion is responsible for Muscle Contractions.
You might be interested in
When doing experiments, researchers change a condition called a(n) __________ so that they can see the results of that change.
Fiesta28 [93]
The answer to your question is answer choice .1 Independent variable.
4 0
3 years ago
What is true of all eukarotes?
inysia [295]

Answer: they all have a nucleus

Explanation:

Unlike prokaryotes, the dna is neatly inside the nucleus and not scarttered around, The types of eukaryotes are plant and animal cells

3 0
3 years ago
PS: PLEASE DO NOT PUT A LINK I AM NOT GOING TO OPEN THE LINK THAT IS IN THE ANSWER SECTION! THERE ARE 4 QUESTIONS.
k0ka [10]

Answer: 1. a. logistics model of growth

2. a. environmental conditions

3. b. all limiting factors

4. b. water availability

Explanation:

1. a. logistic model of growth will show the increase in population of a species in accordance with the carrying capacity exponentially but when the population will experience the scarcity of resources it will decline considerably.

Carrying capacity is the total number of members of the population of a species that an ecosystem can sustain by providing resources.

2. b. All environmental conditions which favor the survival of the living beings will contribute to the carrying capacity for example food, water, shelter, and other resources.

3. b. Limiting factor is the one which limit the chances of survival and growth of a particular species in an ecosystem. For example, scarcity of food, here food is the limiting factor.

4. d.  A density dependent limiting factor is the one which affects the population of the species based upon the density. The water availability is a density dependent limiting factor because the more the density or abundance of a population more will be the scarcity of water as it will be required by all organisms. So, the species population may experience decline due scarcity of water.

8 0
3 years ago
he burning of coal, a fossil fuel, produces water and carbon dioxide. How is this similar to cellular respiration? A) Both requi
MariettaO [177]
Hello There!

Now, i'm not 100% sure on this but i think it is C. 

Please let me know if it is correct..i'm sorry if it is wrong.

Hope This Helps You!
Good Luck :) 

- Hannah ❤
8 0
3 years ago
Read 2 more answers
. If a person comes in contact with this same virus years later, what does our body produce to get rid of or kill the virus
borishaifa [10]

If a person comes in contact with this same virus years later, our body produces antibodies to get rid of or kill the virus

Explanation:

When a person is infected by a virus, the infected person's body develops antibodies as an immune response to act against the virus. Antibodies are produced as part of humoral immunity.

Antibodies work by neutralizing the viral activity, agglutination,  phagocytosis or by complement system.

Antibodies are protein compounds which can recognize the invading pathogens and attack them.

Antigens or viral proteins in the virus leads to the production of antibodies in the host's body.

The specific antibodies triggers innate immune response upon detecting specific viral antigens when infected and will help the body to get rid of  or kill the virus.

6 0
3 years ago
Other questions:
  • What would occur if a fetus's villi tissue ruptured? 
    6·2 answers
  • If your parent cell started out with 8 chromosomes, how many sister chromatids would be produced during interphase? during mitos
    8·2 answers
  • Crosses and ________ appear on the gables of the borgund stave church in norway (fig. 15- 14 to guard the church and its congreg
    14·1 answer
  • Contributing factors that lead to Xenophobia
    10·1 answer
  • Endosymbiosis can best be described as:
    9·1 answer
  • Herbicides are used to kill weeds or plants growing where they are not wanted. A crop of corn has been genetically modified so t
    7·1 answer
  • Explain the benefit of an increase in capillary-action to a hockey player.
    11·1 answer
  • Answer all 3 parts of this essay question:
    15·1 answer
  • Which of these would not be used by a biologist to determine the relationship between two organisms
    9·1 answer
  • Write a one-paragraph (5-7 sentences) reflection on the dangers of drugs and how they can interfere with you achieving your goal
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!