Which term describes and enzyme?

A. Substrate
B. Reactant
C. Catalyst
D. Product

Answers

Answer 1
C. Catalyst because a catalyst has an enzyme
Answer 2
the answer will be C. catalyst 

Related Questions

What are the 2 different kind of t-cells and what is their jobs?

Answers

The two different kinds of t-cells are the Helper t-cells and the killer t-cells.
T cells are named T cells after the thymus, an organ situated under the breastbone. They are produced in the bone marrow and later move to the thymus where they mature. Helper T cells have a primary tsak of activating the B cells and killer T cells. The killer T cells are specialized in attacking cells of the body infected by viruses and sometimes also by bacteria. Additionally, they can attack cancer cells.

Answer:

Helper T cells

Killer T cells

Explanation:

The two main types of T cells are –  

a) Helper T cells

b) Killer T cells

The function of these two cells is as follows –  

a) Helper T cells – These act as messenger for the immune system of the body. They don’t do anything by themselves but through chemical messaging they pass on the information to other cells of the immune system.

b) Killer T cells – These cells find and attack the infected cells. They are able to distinguish between the healthy cell and infected cell.  

What forms during the zygote period to cushion and protect the zygote?

Answers

Amnion is the answer to this question

Answer:

A zygote is the union of the sperm cell and the egg cell. Also known as a fertilized ovum, the zygote begins as a single cell but divides rapidly in the days following fertilization. After this two-week period of cell division, the zygote eventually becomes an embryo

Explanation:

How does the size of a landmass relate to species diversity? the size of a landmass is unrelated to species diversity. larger landmasses have less diversity. larger landmasses have greater diversity?

Answers

larger landmasses have greater diversity

Answer:

larger landmasses have greater diversity

Explanation:

How does the size of a landmass relate to species diversity? the size of a landmass is unrelated to species diversity. larger landmasses have less diversity. larger landmasses have greater diversity?

A landmass is actually the environment which species live. Greater land masses have greater specie diversity . diversity in the sense that there are similarities and differences. E.g A desert in Africa can have lions, zebras, insects etc

C. larger landmasses have greater diversity  is suitable

I need help on a Biology practice please?

1. A unicellular organism with no nucleus is a (1 point)

2. The type of infection in which a virus does not immediately start replicating itself, but inserts a piece of DNA into the host cell’s genome which becomes activated at a later date is called a (1 point)

3. A spiral or corkscrew-shaped prokaryote is called (1 point)

4. The thick internal wall that can enclose a prokaryote’s DNA and some cytoplasm when conditions are unfavorable is called a (1 point)

Answers

1. Prokaryote - a unicellular organism that does not have a nucleus
 2. Lysogenic infection - the virus spreads the normal reproduction of the cells 3. Spirillum - there is also another type of spiral bacteria which is called a Spirochete
 4. Endospore - they are resistant to very strong environmental factors

what two chromosomes do males have for gender

Answers

Males have two different chromosome that determine their sex: X and Y

Females have two of the same chromosome which determines their sex: X and X

Chromosomes carry genetic information, and they are called X and Y because that's just just what they look like coincidentally. Look it up! It's pretty interesting.

x and y chromosomes is correct

why do newly discovered species live in remote, hard to reach places?

Answers

This is because these species would not have been studied much or documented in the past because of their inaccessibility. Many species may be unknown to science, but that does not mean they are unknown to humans. Traditional knowledge within rural areas may have knowledge of these species, but the remoteness of these areas means that universities and research centres may not have sent scientists into these areas. 
Final answer:

Newly discovered species often inhabit geographically isolated areas because these unique environments allow them to evolve and retain their distinctive traits over time. These remote locations also provide the necessary isolation for new species to develop. However, these species are often endangered due to rapid habitat loss.

Explanation:

Newly discovered species often inhabit remote, hard-to-reach places because these geographically isolated areas provide unique environments where species can evolve without much interruption or competition. Examples of this can be seen in places like Hawaii and New Guinea, where unique patterns of species distribution are found due to geographical isolation. In these secluded areas, species are capable of retaining their unique characteristics over time as they remain separated from other species.

Another factor is the element of endemism. Many geographically isolated areas such as islands or high-elevation habitats provide the isolation necessary for new species to develop and adapt. Due to the isolation of their habitats, many of these species have been able to escape detection until they are discovered by scientists.

However, it's important to note that while these environments allow for unique speciation, they also pose threats to these endemic species. As most new species are often found in rapidly shrinking tropical forests, these unique living organisms are frequently threatened by extinction due to human activities and environmental changes.

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What are the 4 steps to purify DNA from a cheek swab.

Answers

 1.) Collect cheek cells. 2.) Burst cells open to release DNA. 3.) Separate DNA from proteins. and debris. 4.) Isolate concentrated .

The four steps to purify DNA from a cheek swab are as follows:

Collect the cells from the required site, i.e. Cheek swab.Break or disrupt the cell in order to release DNA content.Now, separate this content of DNA from proteinaceous constituents.Isolated the required DNA with the phenol-chloroform method.

What is DNA purification?

DNA purification may be defined as a type of process through which various physical and chemical methods are utilized in order to separate  DNA from cell membranes, proteins, and other cellular components.

DNA extraction is carried out by organic extraction which is known as phenol-chloroform methods and non-organic extraction which is known as salting out and proteinase K treatment. Apart from these two most common methods, other methods are also utilized for the same.

Therefore, the four steps of DNA purification from a cheek swab are well described above.

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Four strategies have been proposed to increase the world's food supply in places where populations are underfed

Answers

One is the diversification of food sources. Second is increasing agricultural production by implementing good agricultural practices and adopting contemporary technologies such as Genetically Modified Foods. The third is increased exports to these counties with undefined populations. Fourth is embracing good agricultural land management practices such as reducing land fragmentation/subdivision so as to promote large-scale production.  






How much percent of biodiversity on land will be lost if all rain forests are destroyed?

Answers

Forests is a major part of the biodiversity, forests cover about 6% of the planet, but they harbor up to 90% of the world's terrestrial biodiversity. This biodiversity is irreplaceable, and also has important economic uses. However, forests continue to disappear at an alarming rate. I therefore believe if all rain forests are destroyed then it means about 90% of terrestrial biodiversity will be  destroyed.

Blood leaving the heart for the body passes through a large blood vessel called the __________. vena cava pulmonary vein aorta pulmonary artery

Answers

Aorta is right the answer.

Answer:

Explanation:

Aorta is right the answer.

The four bases contained in dna are _____. the four bases contained in dna are _____. cytosine, guanine, thymine, uracil adenine, guanine, purine, thymine adenine, guanine, uracil, thymine adenine, guanine, cytosine, thymine

Answers

The four bases in DNA are: adenine, thymine, cytosine, guanine.
In RNA, thymine gets replaced by uracil. 
Purine is only a name for the two bases guanine and adenine. 

Answer:

The correct answer is Adenine, thymine, guanine, cytosine.

Explanation:

When performing rescue breathing, be sure to always ____ the head before performing breaths?

Answers

When performing Cardiopulmonary Resuscitation or CPR you have to follow the following steps:

1. Make sure that the scene or environment is safe.
2.Tap the patient and ask if he/she is okay, if the victim is non-responsive proceed to CPR.
3. First, perform the head-tilt chin-lift maneuver to open the airway.
4. Start by giving 30 chest compressions and 2 breaths thereafter. Watch for response from the patient and if there is none, repeat the cycle.

Therefore, when performing rescue breathing, tilt the head of the patient.

When performing rescue breathing, be sure to always tilt the head before performing breaths. Tilting the head is an essential step in rescue breathing to ensure an open airway.

By gently tilting the head backward, it helps to align the airway and prevent any obstruction that could hinder the flow of air. This position helps to clear the air passage and make it easier to deliver rescue breaths. It is important to maintain an open airway during rescue breathing to ensure effective ventilation and oxygenation.

When performing rescue breathing, tilting the head is an important step in the process of ensuring a clear and open airway. The head tilt-chin lift maneuver is commonly used to achieve this.

When a person is unconscious or unresponsive, their muscles may relax, including those in the neck and throat. This relaxation can cause the tongue to fall backward and block the airway, making it difficult for air to pass through.

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What type of bonding exists in network solids?\?

Answers

type: covalent bonds

What substance is a source of chemical potential energy that animal cells can use

Answers

Glucose is a source of chemical potential energy that animal cells can use. 

Trypsin is an enzyme that hydrolyzes(1)______________ into smaller subunits called(2)________________. the gelatin contained this substance. steapsin is an enzyme that hydrolyzes(3)_________into smaller subunits called (4)________________ & (5)_____________________. phenol red is a color indicator that turns what color in the presence of an acid? (6)_________________.

Answers

Trypsin is an enzyme that is present in pancreatic juice. It helps to digest proteins and break them down into something that can be absorbed by the body. It is an enzyme that hydrolyzes(1)peptide bonds into smaller sub-units called (2)oligopeptides and dipeptides, which are further hydrolized into amino acids to make them available for absorption into the blood stream. 

Steapsin is also an enzyme in pancreatic juice or is a pancreatic lipase called triacylglycerol lipase. It catalyzes the breakdown of fats. It is an enzyme that hydrolyzes (3)fats into smaller sub-units called (4)fatty acids & (5)glycerol. Phenol red is a pH indicator that can determine the presence of acids. It is a color indicator that turns turns (6)yellow in the presence of acid.



The variation of kernel color in corn plants is an inheritated trait. R is the dominant allele for red kernels in a corn plant and r is the recessive allele for yellow kernels. What is the probability that a corn plant withe the genotype Rr crossed with a corn plant rr will have offspring with the genotype r? Express your answer as a fraction

Answers

Rr crossed with rr
1/2 of the offspring with have the genotype of rr, possessing yellow kernels.
Final answer:

The probability of getting an offspring carrying the rr (yellow kernels) genotype from a cross between Rr and rr parent corn plants is 1/2 or 50%.

Explanation:

The probability that a corn plant with the genotype Rr crossed with a corn plant rr will have offspring with the genotype rr can be calculated using a Punnett square analysis. When we cross Rr (heterozygous red) with rr (homozygous yellow), we find that one of every two offspring (or 1/2) will be Rr (red) and one of every two will be rr (yellow). So, the probability for the offspring to have the genotype rr (yellow kernels) is 1/2 or 50%.

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Some bears kept in the zoo allow veterinarians to routinely give them total body checkups. these bears open their mouths for teeth cleaning and present their paws for nail clipping. your friend wonders how anyone could ever get these dangerous animals to be so cooperative without anesthesia. you, however, a psychology student, quickly surmise that the bears had most likely undergone

Answers

Answer: Operant Conditioning

Some bears must have had undergone operant conditioning that is why they open their mouths for teeth cleaning and present their paws for nail clipping.

Operant conditioning is a form of learning in which a reward or punishment is given for some voluntary behavior. 

Bears that have undergone operant conditioning are called food-conditioned bears. They are dangerous but learned to approach humans, or frequent human-occupied sites, in search of food (reward).

Which of the following following terms best describes air?

A)element
B)compound
C)mixture
D)none of the above


Answers

air is a homogeneous mixture mixture of several gases

 

Final answer:

Air is best described as a mixture, specifically a homogeneous mixture, with its components uniformly mixed at a molecular level and varying in composition. The correct option is C.

Explanation:

The term that best describes air is C) mixture. Specifically, air is a homogeneous mixture, which means that the different components that make up air (primarily nitrogen, oxygen, and other gases like argon and carbon dioxide) are mixed uniformly at a molecular level. Unlike a compound or an element, the composition of a mixture can vary, and its components can be separated by physical means, though not simple mechanical means like sorting or filtering.

Elements are pure substances that cannot be broken down into simpler substances by chemical means. An example of an element would be iron, which is purely composed of iron atoms. A compound is made up of two or more elements chemically bonded together in a fixed ratio, such as water (H₂O), which consists of hydrogen and oxygen combined in a 2:1 ratio.

Where would you find humus in this photograph

Answers

Humus is the dark organic matter that forms in the soil when plant and animal matter decays. Humus is usually formed in the soil's top layer.

Hopes this helps; couldn't quite see the answer.

Answer: On the top of the dark band

Humus is a dark organic matter in the soil produced by the decomposition of the dead plants, animals and their traces.The humus develops mainly by the plant litter, when the plants drop their leaves, twigs and other materials piles up and degraded and decomposed by the soil microbes. Humus can be produced naturally or by the process of composting. The humus makes the soil fertile, it is a rich source of nutrients hence, supports growth and development in plants.

In the given picture the dark layer on the top of the soil horizon represents humus.

A(n) _______ is a characteristic arising from genes located on chromosomes that are not gender-determining.
genotype
allele
sex-linked trait
autosomal trait

I'll award medals. :)

Answers

So, this question is asking about genes and the way they link to create a gender. The number of chromosomes is not the key indicator of the gender, but rather it is the kind of them. Here though, the trait that would be the characteristic is the autosomal trait.

A client is currently experiencing panic. which acation would be most appropriate for the nurse to do?

Answers

Staying with the client.
Speaking in short sentences.

A client who is currently experiencing panic, for the nurse to help the client to achieve calmness should stay with the client and speaking in short sentences.

The reassurance of support will help the client to become to a normal situation of being calm.

An adult client is brought to the emergency department by a friend who states, "we were all partying at a club, and all of a sudden my friend collapsed." vital signs revealed a temperature of 99.2° f, pulse of 152, respiratory rate of 32, blood pressure of 163/92. after performing a physical assessment and collecting a health history from the client, what action should the nurse take next?

Answers

I believe the first action the nurse should take is to inform the healthcare provider about the status of the client. The nurse should later prepare to do an Intravenous line. An Intravenous line is a thin flexible plastic tube that is use to deliver fluids, blood products and medication to the patient's blood stream. In this situation, It should be used to administer medication

Answer:

In the given case, the appropriate nursing step would be to inform the healthcare provider regarding the status of the client and to prepare for the beginning of an intravenous line. Ecstasy refers to a drug of abuse, which exhibits both hallucinogenic and stimulant characteristics.  

Stimulants possess the tendency to result in dehydration by enhancing the activity and diaphoresis via enhanced release of adrenaline. The client is showing signs of dehydration, and the healthcare provider must be notified as soon as possible so an IV can be prescribed.  

Nicotine from cigarette smoke acts as a ligand and associates with specific cells in the nervous system. nicotine eventually produces feelings of pleasure and well-being. below are the events that happen in the cellular response to nicotine. place the events in the correct order to describe the steps in the signaling pathway.
a. the acetylcholine receptor is an ion channel, and, when a ligand binds, the ion channel opens.
b. an influx of ions carries the signal to the reward areas of the brain.
c. nicotine binds to the transmembrane protein that normally binds the neurotransmitter acetylcholine.
d. the signal causes release of dopamine in the brain, which causes good feelings.
e. nicotine is quickly eliminated from the body (causing cravings for more cigarettes to produce good feelings). c, d, b, a, e a, d, b, c, e nicotine is quickly eliminated from the body (causing cravings for more cigarettes to produce good feelings). c, a, b, d, e b, a, c, d, e

Answers

The sequence of events is c, a, b, d, e. This defines nicotine dependence /addiction. A person with nicotine dependence cannot stop smoking even when their health deteriorates. Withdrawal symptoms associated with nicotine dependence include; lightheadedness, anxiety, problems focusing, slow pulse, and mood depression.






Nicotine binds to acetylcholine receptors, opens ion channels causing an influx of ions, which leads to dopamine release and pleasurable feelings, and is quickly eliminated causing cravings for more cigarettes.

This detailed answer explains the correct order of events in the cellular response to nicotine in the signaling pathway.

The correct order of events in the cellular response to nicotine in the signaling pathway is:

c. Nicotine binds to the transmembrane protein that normally binds the neurotransmitter acetylcholine.a. The cholinergic receptor functions as an ion channel that opens in response to ligand binding.b. The signal is sent to the brain's reward regions by an influx of ions.d. The signal triggers the brain's dopamine release, which results in positive emotions..e. The body rapidly rids itself of nicotine, which leads to desires for more smokes to feel good.

How does the asexual reproduction of a lily differ from sexual reproduction? All BUT ONE statement describes a difference between asexual and sexual reproduction of this lily, namely:

Answers

Asexual reproduction uses one organism who has both male and female gametes.
Final answer:

The asexual reproduction in lilies results in genetically identical plants, as it happens through a process called vegetative propagation. Sexual reproduction, however, produces genetically unique plants, as it involves the fertilization of the ovule by the pollen, which is genetically different. The main difference between the two thus lies in the genetic diversity.

Explanation:

The asexual reproduction in lilies involves a process known as vegetative propagation, often through bulbils or bulblets. This occurs when a new lily plant grows from a fragment of the parent plant, inheriting the exact same genetic information as the parent, resulting in a genetically identical (clone) lily plant.

On the other hand, sexual reproduction in lily plants involves the fertilization of the ovule by the pollen, which is genetically different. The ovule then develops into a seed and eventually grows into a new plant. The offspring produced is genetically unique because it contains a mix of genes from both parent plants.

Thus, the main difference between asexual and sexual reproduction in lilies lies in genetic diversity. Asexual reproduction results in plants that are genetically identical, while sexual reproduction produces new genetic combinations, increasing genetic diversity.

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The students in Mrs. Cosby's class were observing worms. The students wanted to find out if a worm's body weight is related to how much food it eats. For their experiment, the students set up five containers in the same place, each with the same type of worm. They measured the starting weight of each worm before they began, and then offered the same amount and type of food to all the worms. What data must they collect during their experiment?

Answers

Final answer:

To answer the question, the students should collect data on the starting weight of each worm and measure their weight again after offering them the same amount of food.

Explanation:

The students in Mrs. Cosby's class want to find out if a worm's body weight is related to how much food it eats. To answer this question, they should collect data on the starting weight of each worm before they begin the experiment. They should also measure the weight of each worm again after offering them the same amount and type of food. By comparing the starting and ending weights, they can determine if there is a relationship between the worm's body weight and the amount of food it eats. Comparing the starting and ending weights will help determine the relationship between a worm's body weight and the amount of food it eats.

When a neuron's membrane is at rest, the concentration gradient tends to move potassium ____ the cell and the electrical gradient tends to move it ____ the cell?

Answers

go to quizlet.com they give you all types of information

A surgical client is receiving a neuromuscular junction (nmj) blocker. the nurse knows that the client cannot move because the client's acetylcholine receptor sites have been stimulated and the drug is remaining in the receptor sites, preventing repolarization. what medication is this client receiving?

Answers

The patient is receiving succinylcholine or commercially called anectine. 
Succinylcholine is a medication often used in the context of general anaesthesia and its main effect is general paralysis. The drug's mechanism of action includes the inhibition of the acetylcholine's action on skeletal muscles. This inhibition is caused by the binding of the drug on the nicotinic acetylcholine receptor and the depolarization of the muscle cell.

What would indicate that a corpse had been dead between 2-8 hours?

Answers

Hey there! :)

When pressing a corpse, the colour disappears, this is called Livor Mortis.
The discolouration when thumbed upon a dead body indicates the death of between 2 - 8 hours as it is permanent 
This happens during post-mortem 

why do producers need decomposers?

Answers

consumers need the producer to eat and not starve

and decomposers. Decomposers are the garbage men of the animal kingdom; they take all the dead animals and plants

Decomposers return nutrients to the earth by decomposing organic material (such as deceased animals and organisms). Producers are dependent on the nutrients they gain from the soil to make their own "food". Without decomposers, the soil lacks nutrients.

Select all that apply. You can identify or classify archaea and eubacteria by _____.

Answers

Archaea and eubacteria are both prokaryotes that lack organelles. They are a unicellular organisms that has thick cell walls and reproduce asexually through binary fission.
In order to determine whether an organism is archaea or and eubacteria you must consider the following characteristics or factors:
1. habitat
2. their means of existence
3. genetic makeup
3. the shape of their cells
4. arrangement/ cell organization
5. through gram staining
6. how they gain nutrients
7. how they move

If you wanted to try and identify or classify archaea or eubacteria, you would study their habitat, study their genetic make-up, study their shape and arrangement, conduct Gram staining, study how they gain energy and nutrients and study how they move. Archaea and eubacteria are genetically different; Archaea have more complex RNA polymerases that contain multiple polypeptides while eubacteria have simple RNA polymerases that contain four polypeptides. Archaea cell walls do not contain peptidoglycan while almost all bacteria cell walls contain peptidoglycan.

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A scientist finds that on one side of a mountain 35 cacti have purple flowers and 16 have white flowers. If he goes to the other side of the mountain, what is the experimental probability that the first cactus he comes across has white flowers? With this faith we will be able to hew out of the mountain of despair a stone of hope. With this faith we will be able to transform the jangling discords of our nation into a beautiful symphony of brotherhood. With this faith we will be able to work together, to pray together, to struggle together, to go to jail together, to stand up for freedom together, knowing that we will be free one day."I Have a Dream,"Martin Luther King Jr.Which phrase uses connotation to support Kings purpose of inspiring hope by showing the beauty of an equal society?with this faitha stone of hopesymphony of brotherhoodto struggle together a shop made a profit of 23500 in 2009. in 2010 the profit increased to 28000.work out the percentage increase in profit, to the nearest 1% HELP PLEASE What is chemical equation A.substance present after a reactionB.reaction in which substances combine to form a more complex compoudC.principle that states that matter if not created of destroyed during a chemical rectionD. reaction in which one element replaces another in a compoud E.substance present before a reaction F.number telling how many molecules of a substance are involved in a chemical reactionG.reaction in which compounds are broken down into simpler substancesH.uses symbols and formulas to show chemical reactions. what type ofreproduction produces fungi that are different from either parent What shape does the molecule in the image have? A) linear B) tetrahedral C) double helix D) single helix What is one way homeostasis benefits living organisms? It maintains balance. It reduces air pollution. It increases food consumption. It regulates atmospheric temperature. PLZ HURRY Which of the following describes organelle structures that plant and animal cells have in common? A) They both have ribosomes that are used to synthesize proteins and a cell membrane that serves as a selective barrier for the cell. B) They both have a central vacuole that stores water and food and mitochondria that releases energy from glucose molecules.C) They both have chloroplasts where conversion of light to chemical energy occurs and a cell membrane that serves as a selective barrier for the cell.D) They both have a cell wall that provides protection and support and a nucleus where DNA is stored.(I think its A) Start with the number n = 54527. Divide n by 5 and round the result up to an integer. Keep repeating the division and rounding step until the resulting number is less than 5. How many divisions are performed? You can use a calculator for this problem, but you should not have to actually perform all of the divisions. Rabbits are introduced into a grassland area. Which action of the rabbits would harm the buffalo that live in the grassland? A. attracting predators B. eating the grass C. attacking prey When writing an essay, what should be included to address other viewpoints? A. Thesis statement B. Main idea C. Central claim D. Counterclaim MATH HELP LEASE WILL GIVE BRAINLIEST!!!What is the value of for the acute angle in a right triangle?sin() = cos(58)Question 4 options:325812229 can someone check my work. I don't know what I did wrong 1.A paper cup designed to hold popcorn is in the shape of a cone. The diameter of the cup is 12 centimeters and the height is 16 centimeters. What is the volume of popcorn the cup could hold? Use 3.14 for pi. Enter your answer, as a decimal, in the box. Charlene records the number of pieces of red colored candies in ten bags of candy of assorted colors. find and interpret the mean absolute deviation of the data 6,6,7,7,8,8,10,10,11 An artist wants to reduce the size of a drawing using a scale factor of 3:1 . The original drawing has an area of 720 square inches. What is area of the new drawing? Enter your answer in the box. in When the constitutional convention laid out the framework for the executive branch they wanted Match the scenarios with the economic concepts they illustrate. In a survey of 1756 adults 37% responded yes to the Severy question how many adults answer yes? PUTTING MAX POINTSFind all polar coordinates of point P where P = (6, -/5)Answer choices: (6, -/5 + 2n) or (-6, -/5 + 2n) (6, -/5 + 2n) or (-6, -/5 + (2n + 1)) (6, -/5 + (2n + 1)) or (-6, -/5 + 2n) (6, -/5 + 2n) or (6, /5 + (2n + 1))