Answers
A person or thing that precipitates an event or change: His imprisonment by the government served as the catalyst that helped transform social unrest into revolution. a person whose talk, enthusiasm, or energy causes others to be more friendly, enthusiastic, or energetic.
Answer:
It means that it lowers the activation energy of a reaction and can be used again.
Explanation:
A catalyst is a substance that allows the chemical reaction to occur at a faster rate or under different conditions (e.g. at a lower temperature) without being affected by the reaction.
The activation energy is the minimum energy required for the reaction to occur. Catalysts lower this energy and can be used again, which is why the last option is the correct one.
Related Questions
1.270 calves were born from gray-variegated cattle. Of these, 136 have parental coloring. Determine the genotype and phenotype of the rest of the offspring, if it is known that the gray-variegated coloration occurs when crossing black and white individuals.
2.In some breeds of sheep there are animals without ears and animals with long ears. When they are crossed, animals with short ears are obtained. What offspring will be obtained by crossing short-eared animals and by crossing short-eared rams with long-eared sheep?
Answers
Answer:
This is hard
Explanation:
BRAINLIEST IF RIGHT 20+ POINTS
Which of the following categories was introduced as an advancement to the original Linnaean Taxonomy?
Archaea
Fungi
Plantae
Protista
Answers
Answer:
Archaea
Explanation:
Answer:
archaea
Explanation:
Jonathan designed an experiment to plant lima bean seeds. His variable was to change what kind of light each plant received. He
used a different kind of light with each plant. He hypothesized that the plant grown under the plant light would have the greatest
amount of growth. Did the data support the hypothesis? Explain.
Answers
Answer:
Yes, it was.
Explanation:
The data did support the hypothesis because the data given was generalized on the change of light each plant received. The hypothesis was that the plant light would have the greatest amount of growth. The data was the different light types and the hypothesis was which one he inferred would work best.
Answer:
- The type of plants used in the study
- The number of plants in each experimental group
- A complete citation of the source
Explanation:
1. The chemical equation for photosynthesis is shown below is incomplete
6H20 + ______________ energy C6 H12 O6 + ________________
Plant pigment
a) Complete the equation in either all words or all symbols.
b) Name the plant pigment necessary for this reaction
2.
Name the tissues labelled A………………….., B………………… and C…………………..(3M)
3. Complete the table by matching each of the described functions to one of the leaf parts as shown in above diagram (4M)
Description of function Leaf part
Main region for photosynthesis. Contain
many chloroplast to trap light energy.
Cells are loosely packed. Air spaces between cells allow gaseous exchange.
Thin and transparent layer that allows light to pass through.
Water vapor passes out during transpiration.
If question 2 is not answerable or if the picture is missing then leave it
Answers
Answer:
Explanation:
C2+c4=83
Carbon plus oxygen
Which of the following describes how both of these cellular division processes maintain genetic continuity?
А.Both processes involve the replication and division of identical genetic material.
B. Both processes creates cells with half the genetic material of the parent cells.
C. Both process involve the recombination and division of new genetic material.
D. Both processes create cells with twice the genetic material of the parent cells.
Answers
Answer: Both processes involve the replication and division of identical genetic material
Explanation:
During S phase interphase DNA is replicated and it is replicated as an exact copy
When a single cell divides into two cells through mitosis, genetic continuity occurs. One cell divides into two during the process of mitosis, and each of the two progeny cells has the same amount of DNA as the parent cell.
What is genetic continuity?The fact that when a cell divides, the resulting two daughter cells have the same number and type of genes as the original cell is referred to as genetic continuity. It also describes how when two sexually reproducing organisms mate, their offspring have the same number of genes as the parents. Nuclear division results in daughter cells with identical sets of chromosomes. Mitosis ensures the genetic continuity of the ancestral cells in the body's daughter cells. It consists of one fully equational division followed by a DNA synthetic phase. Because it creates a perfect copy of DNA for new cells, DNA replication helps to maintain species genetic continuity.To learn more about Genetic continuity refer to:
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based on the lesson, explain how dna creates proteins
Answers
Answer:
During transcription, the enzyme RNA polymerase (green) uses DNA as a template to produce a pre-mRNA transcript (pink). The pre-mRNA is processed to form a mature mRNA molecule that can be translated to build the protein molecule (polypeptide) encoded by the original gene.
Explanation:
The term _____ means that lit sided of the Moon we see from Earth is getting smaller.
a. waning
b. waxing
c. crescent
d. gibbous
Answers
Answer:
waning
Explanation:
waning means to shrink or get smaller
at what age does the brain grow the most connections
Answers
Answer:
90 Percent of a Child's Brain Develops by Age 5
and The rational part of a teen's brain isn't fully developed and won't be until age 25 or so.
Answer:
At the age 5
Explanation:
NEED HELP ANSWERING THIS PLS
Answers
Answer:
a
Explanation:
Solve the scrambled letter according to the clue: nlpituloo _ _ _ _ _ _ _ _ _: Litter on the ground or harmful chemicals in the water. Who answers correctly will have 30 bonus pts.
Answers
Answer:
pollution
Explanation:
The correct word would be pollution.
Pollution can be described as the presence of ecologically harmful substances in the environment.
Littering the ground is considered pollution because it is harmful to the environment in the long term. Harmful chemical in water is outrightly considered pollution because this will hurt the organisms living in the water and rendered the water unusable to those around it.
Answer:
same for m pollution
Explanation:
What are the possible results of gametes receiving the wrong number or proportion of chromosomes during meiosis II? Select all that apply.
A) zygote that cannot survive
B) gametes with one copy of chromosomes
C) two new nuclei forming during cell division
D) medical conditions for the offspring
Answers
Answer: a and d
Explanation:
edg.
Answer:
A and D are the correct answers
Explanation:
How many of each element is in Na3Ag(S2O3)2?
Answers
Answer:
3 sodium, 6oxygen, 4 sulphur, 1silver
TRUE FALSE: Organisms can CHOOSE to have a mutation
Answers
Answer:
False
Explanation:
Organisms themselves cannot choose to have a mutation. However, it can be artificially done in labs.
Organisms can choose to have a mutation, but this is a false statement because mutation is not voluntary but involuntary and can be caused by many factors, such as environmental factors.
What is the significance of the mutation and its consequences?mutation has many consequences, such as the Mutations can cause developmental disorders such as birth defects, mutations can increase an individual's risk of developing genetic disorders, and they also reduce the genetic diversity of a population. Mutation leads to the loss of function in an essential gene, resulting in a decrease in the organism's fitness in the ecosystem.
Hence, organisms can choose to have a mutation, but this is a false statement because mutation is not voluntary but involuntary and can be caused by many factors, such as environmental factors.
Learn more about the mutation here.
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Which of the following most accurately describes
the amount of water that covers the Earth’s
surface?
A. The ocean covers just over half of the Earth’s surface.
B. The ocean covers less than half of the Earth’s surface.
C. Water covers over 95 percent of the Earth’s surface.
D. Water covers 75 percent of the Earth’s surface.
Answers
Answer: (C) Because 95 percent of the planet is sea water. And, we still have not discovered 75 percent of it. :)
Explanation:
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Answer:
Earth is covered with about 75% water. More accurately, the Earth is covered with about 71% water.
Explanation:
The oceans of the Earth are 91% of that 71%. About 2.1% is is frozen withing glaciers. About 2.5% of water is the freshwater. About 1.69% is made up of ground water.
Where do the most powerful earthquakes on Earth occur?
Answers
Answer:
Most earthquakes happen at or near the boundaries between Earth's tectonic plates
Explanation:
because that's where there is usually a large concentration of faults. Some faults crack through the Earth because of the stress and strain of the moving plates.
If you don't know where the tectonic plates are there is a lot of maps out there :>
theres these platetechtonics at the bottom of some places at earth, but i dont know where.
The breakup of Pangea caused climate changes that caused organisms to adapt
Paleozoic era.
Please select the best answer from the choices provided T F
Answers
Answer:
f
Explanation:
Answer:
F
Explanation:
Was during the Malsozoic Era
Scientists believe all the continents were once connected. They named the supercontinent ________.
1) Euroasian.
2) Pre-America.
3) Prehistoria.
4) Pangea.
Answers
When a billiard ball moves across a table, it experiences _________.
Answers
Explanation:
etsa super el experimento
When a billiard ball moves across a table, it experiences friction as billiards is a popular sport that requires good hand-eye coordination and is played at leisure using a stick and balls.
What is the significance of the billiard game?It is an old game played in leisure time with a stick and balls on a table and It is a test of skill, precision, and focus that requires good hand-eye coordination and the ability to make accurate shots, and it can be played either individually or by teams. It is also a competitive sport where professional billiards organizations and tournaments around the world take place.
Hence, when a billiard ball moves across a table, it experiences friction as billiards is a popular sport that requires good hand-eye coordination and is played at leisure using a stick and balls.
Learn more about billiards here.
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Which structure in this plant cell represents the site of ATP production from photosynthesis?
А
B
C
D
Answers
Bro the answer is b your welcome
I NEED HELP ON KEY CONCEPT!!
Answers
17. Which of the following is an example of an organ?
A blood B lung C hemoglobin D muscular system
Answers
Answer:
B lung
Explanation:
Lungs are spongy organs located in the chest.
Rachel types 162162162 words in 333 minutes. Rachel types at a constant rate. How many words does Rachel type per minute?
Answers
Answer:
54
Explanation:
162 divided by 3 is 54
and right on khan academy
Answer:
ANSWERS 54
Explanation:
MATH
Trees, such as those in the deciduous forest, are very important to the environment. If the number of trees on earth continues to decrease significantly, what might be the result? (Site 1)
Answers
Answer:
more carbon dioxide would build up without the tress to recycle it and many animals would lose their habitats
Answer:
Animals will begin to migrate towards residential areas if the number of trees on the planet continues to decline, as their natural habitat would be destroyed. There are numerous plant species that can be used as a source of medicine for disease prevention and treatment. Trees provide a significant amount of oxygen to the environment. Some deciduous forest trees grow near rivers, preventing soil erosion by attaching dirt to the plant's roots. Cottonwood, mountain ash, and fruit trees are commercially important trees. If there is a considerable reduction in the quantity of trees, all of the above benefits of trees will be lost.
Explanation:
how are elemens and compouds related,
Answers
Answer:
An element is a material that consists of a single type of atom. which Each atom type contains the same number of protons. the Chemical bonds link elements together to form more complex molecules called compounds. A compound consists of two or more types of elements held together by covalent or ionic bonds.
Explanation:
Which of the following correctly matches a catastrophic weather event with its effects on an ecosystem?
Answers
Answer:
I think the answer would be C.
Explanation:
It's the one that makes sense.
Buildings can be demolished, which can result in the release of various harmful substances into rivers, lakes, bays, and the ocean, harming marine life. These substances include paint, pesticides, and gasoline. Thus, option C is correct.
What are the effect of catastrophic weather on ecosystem?Droughts that are more frequent and extreme, storms, heat waves, rising sea levels, melting glaciers, and warmer oceans can all directly injure animals, destroy the habitats they rely on for survival.
And have a disastrous impact on people's way of life and communities. As climate change worsens, dangerous weather occurrences occur more frequently or with greater severity.
When drainage systems are destroyed by floods, raw sewage leaks into bodies of water.
Therefore, a thunderstorm lightning can start a forest fire.
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what organ works to keep you blood plasma isotonic, so that your blood cells do not shrivel up or explode?
helpppp
Answers
Answer:
The correct answer is - kidney.
Explanation:
Osmoregulation is the process that bilogical system perform for the maintain osmotic balance in the blood plasma. There is a regular intake of electrolytes, water in the biological system from various proces.
The kidneys assists in the exported excessive electrolytes and water which is excreted to help in the maiantaining blood plasma on istonic level and prevent i from hypertonic or hypotonic condition that could lead to explosde of the cells. It return the amount of water from the transported amount of electrolyte and water so it can maintain the osmotic pressure in the cell.
As the water taken by the body is lost by the skin and lungs the kidneys are a major site that regulates the excretion of water.
The function of the kidney is to control body fluids. The solution of a wide variety of the electrolytic and isotonic with the liver and kidney tissues have a similar osmotic pressure as the solution of sodium isotonic with tissues of both 2 organs.Hence the option C is correct i.e. kidney.
Learn more about the keep your blood plasma isotonic.
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if a human eats salmon, will the atoms from the salmon protein still exist inside the person?
Answers
Answer:
yes because the protein atoms in the fish will be consumed by the human
Explanation:
7. Contractions push the food along the gastrointestinal tract. Which two systems directly interact during this process? A muscular and digestive C digestive and circulatory B skeletal and muscular D digestive and excretory
Answers
Answer:
Respuesta A sistema muscular y sistema digestivo
Explanation:
Help me draw this in emt 100% smart people pls draw this and label it need the coronal line
Answers
Answer:
you should draw it at the top to bottom then driced it on the piece of papers
Which THREE processes are involved when a multicellular organism reproduces sexually? a. mitosis b. fusion of gametes c. meiosis d. formation of gametes. Pls help yall!!!
Answers
Answer:
B C D
Explanation:
the mitosis it reproduces by its own it doesn't need another person or animal to reproduce.