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What must happen before a chemical reaction can begin?
The activation energy must be exceeded.
The activation energy must be reached.
The concentrations of products and reactants must be equal.
The concentration of reactant molecules must be reduced.

Answers

Answer 1

Answer:

A

Mark me as brainliest ONLY if my answer is correct

I apologize if my answer is incorrect I will better my answering strategies if it is incorrect.

Explanation:

Answer 2
A - the activation energy is the minimum energy needed for the reaction to take place

Related Questions

After the head is struck, the brain continues to move in the fluid and may be contused on the other side; this type of injury is called:

Answers

Answer:

contrecoup

Definition:

a contusion caused by the brain colliding with the skull on the side opposite the point of impact.

Food Allergies ___________.
A. only impact Highly Susceptible Populations.
B. are very uncommon.
C. are serious and can be fatal.
D. are a cause of foodborne illness.

Answers

[tex] \: \: \: \: \: \: [/tex]

C. are serious and can be fatal.

hope it helps

#carryonlearning

Answer: are serious and can be fatal

What must be present for a compound to be organic

Answers

Answer:

any large amount of chemical in which one or more atom are found

A dog who inherits an allele for
curly hair and an allele for straight
hair has curly hair because the
allele for-

E. curly hair is recessive.
F. curly hair is dominant.
G. straight hair is dominant.
H. curly hair is inherited from both
parents.

Answers

F. curly hair is dominant

in the odorant cells of mammals, specific odorants are detected by binding to ________.

Answers

Answer:

protein-coupled receptors.

List three limitations for measuring cell size​

Answers

Answer:

Cell size is limited by the cell's surface- area- to - volume ratio

why was it impossible to know about bacteria 5,000
years ago

Answers

Answer:

Im assuming because microscopes hadnt been invented. Also the idea of communicable diseases wasnt around so people assumed it was things like god that caused illness

Answer:

A true understanding of the physiology of these bacteria and their roles in ecology, host health, and natural product production requires their cultivation in the laboratory. Recent advances in growing these species include coculture with other bacteria, recreating the environment in the laboratory, and combining these approaches with microcultivation technology to increase throughput and access rare species. These studies are unraveling the molecular mechanisms of unculturability and are identifying growth factors that promote the growth of previously unculturable organisms. This minireview summarizes the recent discoveries in this area and discusses the potential future of the field.

Explanation:

Prokaryotes and Eukaryotes share which
of the following structures?

DNA, cytoplasm, ribosomes, cell membrane

DNA, cytoplasm, ribosomes, mitochondria

nucleus, cytoplasm, ribosomes, mitochondria

Answers

Answer:

Dna,cytoplasm,ribosomes,cell membrane

Explanation:

CO
Why are liquids usually difficult to compress?
a. Their atoms are held in position
b. Their atoms are already packed closely
together
c. Liquids have a definite shape
d. Liquids are not difficult to compress
Please select the best answer from the choices provided
Ο Α
B
Ο ΟΟΟ
С

Answers

The answer is b. Their atoms are already packed closely together
Option b is the correct option

help me please help ​

Answers

Answer:

1) Predation

2) Competition

3) Symbiosis

Explanation:

Answer:

1. Predation

2. Competition

3. Symbiosis

Explanation:

A classmate states that both energy and matter can be created during photosynthesis and cellular respiration. Is this true? Explain

Answers

No, the chemical equations for both processes are evidence that matter and energy or neither created nor destroyed

Energy and matter are also produced during photosynthesis.Chemical energy in the form of glucose and matter in the form of oxygen gas are produced during photosynthesis.Since these are the results of the reaction, they are regarded as process outputs.

Can both energy and matter be created during photosynthesis?

Some cells employ a process called photosynthesis to convert light energy into food.Because it enables plants to produce the food required for the rest of the ecosystem, photosynthesis is crucial.Producing organisms, or those that grow their own sustenance, are plants.The foundation of the ecosystem is formed by producers, who transform solar energy into chemical energy in the form of food for themselves and other ecosystem inhabitants.Although many ecosystems are dominated by plants, other organisms are also capable of photosynthesis.Some bacteria and algae are capable of photosynthesizing, and these organisms are the producers in their ecosystem. A biological process called photosynthesis consumes both matter and energy.The world's physical components are made of matter.The capacity to perform work is energy.By use of various mechanisms, matter and energy can be switched for one another.On the other hand, neither matter nor energy can be generated nor destroyed.The first law of thermodynamics is that they constantly evolve into new forms.All processes in the universe operate in this manner.Energy can be transformed into a variety of forms.Several instances include:Chemical drivekinetic energythe potential energy of gravityelastic force The substance and energy persist even after an organism dies.Instead, they are changed into other forms.For instance, both matter and energy are components of plants.Fungi and bacteria in the soil aid in the breakdown of a plant's internal substance into its constituent parts when it dies.These can be used by newly sprouting plants by being recycled into the soil.As a result, neither the energy nor the substance is wasted; rather, they are transformed into new forms.

        To learn more about photosynthesis refer

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Tidal volume is air ________. Group of answer choices forcibly expelled after normal expiration inhaled after normal inspiration exchanged during normal breathing remaining in the lungs after forced expiration

Answers

Answer:

Tidal volume is air *around one half liter*. Group of answer choices forcibly expelled after normal expiration inhaled after normal inspiration exchanged during normal breathing remaining in the lungs after forced expiration

Explanation:

Have a great day!

Please help!!! Multiple choice problem.

Answers

Answer:

Explanation:

B

All of the following are true of hospitals in the United States, except: _____________

a. the average length of stay has declined substantially in recent decades.
b. the percentage of hospital services provided to outpatients has increased substantially in recent decades.
c. hospitals are owned and operated as governmental or not-for-profit institutions, but they are not owned by for-profit corporations.
d. hospitals receive a greater percentage of the healthcare dollar than any other healthcare institution.

Answers

There are different kinds of Healthcare system. The true statement about hospitals in the United States is that Hospitals are owned and operated as governmental or not-for-profits institutions but they are not owned by for-profit corporations.

U.S. Healthcare coverage is known to be divided into 2 part. They are;

Public healthcare (government-funded) Private healthcare (privately-funded)

Hospitals often offer basic care to the sick. They treat illness and do simple surgery. Their work includes removal of gallstones etc. The hospitals are not set up to make profit but too help people.

Learn more about Hospital from

https://brainly.com/question/6610493

where in the chloroplast does the photo part of photosynthesis occur?

Answers

Answer:

Photosynthesis happens when water is absorbed by the roots of green plants and is carried to the leaves by the xylem, and carbon dioxide is obtained from air that enters the leaves through the stomata and diffuses to the cells containing chlorophyll.

Explanation:

:)

Photosynthesis happens when water is absorbed by the roots of green plants and is carried to the leaves by the xylem, and carbon dioxide is enters the leaves through the stomata and diffuses.

What is the function of the chloroplast?

The organelles called chloroplasts allow plants to capture the energy of the Sun in energy-rich molecules, cell walls allow plants to have rigid structures.

Thus, photosynthesis occur in the chloroplast.

To learn more about chloroplast click here:

https://brainly.com/question/11136550

10. What are two examples of "typos" that happen when DNA is being copied?

Answers

Answer:

DNA “typos” cause variation

Explanation:

Any time DNA is copied, a mistake or change can occur in the letters of the DNA sequence, or gene. These changes result in variations or differences in DNA from person to person.

The "typos" that happen when DNA is being copied is mutations and variations.

What are mutations?

A mutation is a change that occurs in our DNA sequence, either due to mistakes when the DNA is copied or as the result of environmental factors such as UV light and cigarette smoke.

Moreover, mutations result either from errors in DNA replication or from the damaging effects of mutagens, such as chemicals and radiation, which react with DNA and change the structures of individual nucleotides.

Therefore, mutations within the DNA are a fairly common event. Mutations are random changes that occur within the sequence of bases in DNA. They can be large scale, altering the structure of the chromosomes.

Learn more about mutations:

https://brainly.com/question/17130462

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Where does cellular respiration take place?
A. endoplasmic reticulum
B. Golgi apparatus
С. mitochondria
D. ribosomes​

Answers

Cellular respiration takes place in mitochondrion
C. Cellular respiration takes place in the mitochondria, the powerhouse of the cell.

A gene has two alleles: A and a. In a population that is in Hardy-Weinberg equilibrium, 9% of individuals have the aa genotype. What is the frequency of the A allele

Answers

Not sure about what the question wants exactly, A alleles or AA alleles or Aa alleles. This is the answers for A alleles.

I have to screenshot the answer cuz Brainly says my words are rude. Sorry for the inconveniences!

these requires warm and moister damp condition to grow and divide​

Answers

Fungi? Question is a bit vague.

An organism's genotype is (1 point)

Answers

Answer:

an organism's complete set of genes.

Explanation:

Which statement accurately describes the role of key organelles in energy transfer?

a
Energy is captured and stored in the nucleus and released in the mitochondria.
b
Energy is captured and stored in the nucleus and released in the chloroplast.
c
Energy is captured and stored in the mitochondria and released in the chloroplast.
d
Energy is captured and stored in the chloroplast and released in the mitochondria.

Answers

Answer:

Energy is captured and stored in the mitochondria and released in the chloroplast.

Explanation:

SORRY I THINK

what plant organelle does photosynthesis take place in?

Answers

Answer:

photosynthesis takes place in chloroplasts, which contain the chlorophyll. Chloroplasts are surrounded by a double membrane and contain a third inner membrane, called the thylakoid membrane, that forms long folds within the organelle.

Explanation:

Have a great day!

what is the area of a room that is 10m long and 10m wide

Answers

Answer:

100 meters

Explanation:

all you need to do is 10 squared or 10 times 10

100 meters

10•10

area you always multiply

hope this helps

many protists are single-celled organisms. which other characteristic is common to organisms in kingdom protista?

Answers

They are neither plants nor animals. They fall in the dustbin kingdom.

Describe how the chemical energy in ATP is converted into electric potential energy

Answers

Answer:

espero ter ajudado boa noite

Explanation:

Descreva como a energia química em ATP é convertida em energia potencial elétrica

NEED HELP ASAP!!
Please no links!!

Answers

Answer:b) The air at high altitudes are less dense, so its harder to breathe.

Explanation:

AS altitude increases, the air pressure drops. This reduces the amount of gas molecules in the air so the air becomes less dense compared to air closer to sea level.

B because it would be harder to breathe

does anyone Rope, Breakaway, or Barrel Race?​

Answers

Answer: I do

Explanation: I have done them all but my horse likes barrel races the best.

Answer:

me!!!!

Explanation:

yes i do barrels

Amphibians, such as frogs, have adapted to have thin, very permeable skin that is well supplied with blood vessels. How does this adaptation most likely help amphibians survive in aquatic environments?
A. It allows them to maintain fairly stable internal temperatures.
B. It allows them to absorb nutrients directly from their environment.
C. It allows them to release chemicals into their environment to attract mates.
D. It allows them to take in oxygen and release carbon dioxide through their skin.

Answers

Answer:

to allow easier gas exchange

Explanation:

what type of plate boundary interactions take place when the tonic plates slide past each other
convergent boundaries
divergent boundary
subduction boundaries
transform boundaries

Answers

Transform boundaries is the answer because convergent boundaries move together and hit into each-other and divergent boundaries move apart

Based on their locations on the periodic table, which best compares the properties of the metalloids arsenic (As) and
antimony (Sb)?
Arsenic has a more metallic behavior than antimony because arsenic's atoms have fewer electron shells.
O Arsenic has a more metallic behavior than antimony because arsenic's atoms have more electron shells.
Arsenic has a more nonmetallic behavior than antimony because arsenic's atoms have more electron shells.
Arsenic has a more nonmetallic behavior than antimony because arsenic's atoms have fewer electron shells.

Answers

Answer:

Arsenic has a more metallic behavior than antimony because arsenic’s atoms have more electron shells.

Explanation:

the person above me is wrong

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