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
Serga [27]
3 years ago
7

What must happen before a chemical reaction can begin?

Biology
2 answers:
Nitella [24]3 years ago
3 0
The answer should be <span>The activation energy must be reached.</span>
ankoles [38]3 years ago
3 0

Answer:

The reactants need to reach activation energy.

Explanation:

For a chemical reaction there need to be:

1.- The reactants ( the elements or compounds that are going to react).

2.- The activation energy (the necessary energy to start changing the matter in the interchange of atoms among the reactants).

You might be interested in
Explain 2 differences between the daughter cells made during meiosis compared to mitosis.
Degger [83]
The processes differ in two<span> fundamental. </span>Meiosis<span> has </span>two<span> rounds of genetic separation and cellular division </span>while mitosis<span> only has one of each. </span>In meiosis<span>homologous chromosomes separate leading to </span>daughter cells<span> that are not genetically identical. T</span>wo cells<span> with no net change </span>in<span> the number of chromosomes.</span>
7 0
3 years ago
Why is osmosis important to the survival of a cell?
Zielflug [23.3K]

What did you include in your response?

  • For a cell to survive, ion concentrations inside and outside the cell need to be the same.
  • If extra ions are not pumped out of the cell, water can enter the cell, causing it to swell and burst.
7 0
3 years ago
Read 2 more answers
You are studying with a classmate, who explains that increasing the amount of nutrients in a lake helps submerged, rooted aquati
Nataly_w [17]

Answer:

E-You disagree because the resulting increase in phytoplankton at the surface would inhibit sunlight from penetrating into the water, thus inhibiting photosynthesis in the submerged plants.

Explanation:

Eutrophication is the process wherein nutrients specifically phosphorus and nitrogen are present in excess in a water body such as a lake. The increased concentration of nutrients promoter the growth of cyanobacteria and algae such as phytoplankton.

The increased population of phytoplankton in surface water reduces the oxygen availability and clarity of water for the organisms present in deeper layers.  Also, reduced clarity of water limits the amount of solar radiations penetrating the surface water to reach the deeper layers.

Increased nutrient levels of the lake would rather inhibit the growth of submerged plants due to reduced availability of sunlight as caused by presence of phytoplankton in surface water.  

5 0
3 years ago
A major function of the human urinary bladder is
ioda
The answer is A, storing urine until it is eliminated.


The bladder stores urine, allowing urination to be infrequent and controlled. The bladder is lined by layers of muscle tissue that stretch to hold urine. The normal capacity of the bladder is 400-600 mL. During urination, the bladder muscles squeeze, and two sphincters (valves) open to allow urine to flow out.
7 0
3 years ago
Read 2 more answers
Sickle–cell anemia is caused when a mutation results in the replacement of glutamate with valine. Which type of mutation is obse
irina1246 [14]

Answer:

A.chromosomal mutation

4 0
3 years ago
Other questions:
  • "E. coli can be considered a manufacturing unit in the field of genetic engineering."
    13·1 answer
  • NEED ASAP PLZ HURRY IM BEING TIMED
    12·1 answer
  • The phytoplankton at the bottom of the pyramid take in and store a certain amount of the Sun's energy. Does all of the energy st
    13·1 answer
  • Ten different types of culture media were inoculated with the same strain of bacteria and incubated at the same temperature. Nin
    13·1 answer
  • List 3 facts about green house gases.​
    13·1 answer
  • Incidences of witchcraft are found universally among cultures of this time, but none had the devastating impact that Salem’s had
    14·1 answer
  • Answer the questions using the drop-down menus.
    6·2 answers
  • The hydrogen and oxygen atoms held together by what bonds
    8·1 answer
  • How many more oxygen atoms are represented in the formula for barium sulfate than in the formula for barium hydroxide?
    10·1 answer
  • What is skeletal system?<br>​
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!