.
Metabolic reactions are necessary for the body to function and maintain homeostasis. Which of the following statements describes an enzyme’s role in these reactions?

A. Enzymes are formed into lipids.

B. Enzymes are catalysts that lower the activation energy allowing the reaction to occur.

C. Enzymes are used up as a part of the reaction and cannot be used again.

D. Enzymes can be any shape to bind to the substrate.

Answers

Answer 1
The correct answer is B.  Enzymes are catalysts that lower the activation energy allowing the reaction to occur.

Enzymes are biological catalysts which accelerate chemical reactions(reactions are millions of times faster than without them). Every enzyme has an active site which binds substrates and converts them into products. Binding to the substrate, enzyme changes its shape.

Related Questions

Research the types of cells present in the kidney.

Answers

The kidney has many different types of cells in it: 1) blood vessel cells

2) cells of connective tissue: this holds the different kidney tissues together
a) adipose (fat) cells
b) fibroblasts producing collagen and ground tissue

3) functional cells: these pertain to the filtration of blood plasma into urine.
a) glomerular cells: these are very thin squamous cells with special "slits" in them to filter (the first part of the nephron.
b) cuboidal tubular cells: these are squarish (cube-like) cells that make a stricter filtering layer, the 2nd part of the neuron.
c) squamous tubular cells: also in the tubule of the nephron, these cells help to filter water and some electrolytes.

4) urothelial cells: these cells are at the end of the nephrons, the collecting ducts, and into the urinary spaces (calyces and renal pelvis)
It contains a specialized type of cell that has smooth muscle under it for contraction.

5) macula densa cells: these are important for sensing how much blood is entering the nephrons, which can secrete a hormone to change/regulate that bloodflow.

6) smooth muscles in front of every nephron: these tiny strips of smooth type of muscle cells is wrapped around the tiny blood vessels entering the glomerulus of the nephron. These muscles can contract around the vessels to restrict bloodflow show it be too much.

The case of little albert is used by behaviorists to explain ____.
a. ​obsessive-compulsive disorder
b. ​generalized anxiety disorder
c. ​posttraumatic stress disorder
d. ​phobias

Answers

The answer is D. phobias. The little Albert experiment demonstrated that emotional responses can be conditioned in human beings. The 9 months boy was exposed to different stimuli which included a rabbit, masks, a white rat, burning newspapers and a monkey. After some time he was exposed to the white rat and later a loud noise of metal was made and it scared the boy. This exposure was repeated and eventually the boy became afraid of white furry things including animals.

Final answer:

The case of Little Albert is used by behaviorists to illustrate how phobias can be learned through classical conditioning.

Explanation:

The case of Little Albert is used by behaviorists to explain phobias. This classic experiment performed by John B. Watson and Rosalie Rayner demonstrated how a previously unfeared object, such as a white rat, could become a source of intense fear through the process of classical conditioning.

Little Albert developed a conditioned response of fear toward the rat, which was associated with the loud noise that had been paired with it. Although unethical by today's standards, the study highlighted how phobias could be acquired through environmental experiences and conditioning, rather than being innate.

Behaviorists argue that phobias are specific fears of a certain object, situation, or activity, and are characterized by their specificity and their irrationality.

Unlike generalized anxiety disorder (GAD), where the anxiety is more diffuse and is not linked to specific triggers, or obsessive-compulsive disorder (OCD), characterized by repetitive thoughts and behaviors aimed at reducing anxiety, phobias are marked by avoidance of particular stimuli that provoke intense fear.

After the delivery of her child, the mother went to the _________ unit of the hospital.

Answers

After  the   delivery  of  her  child,  the  mother  went  to  the  postpartum  unit  of the   hospital
  The  postpartum  unit  of   a  hospital  is  the  area  where  babies  (new  born)   and  their  moms    recover  after  birth.  In  the  postpartum unit   the  neonatal  nurse   specialist   focus  on  the  care  of   newborn  infant.  The  nurses  focuses  their  care  for  premature or  ill  newborns.

List three things needed for microorganisms to grow and reproduce

Answers

For microorganism to grow and form a population, they require both chemical and physical requirements. The chemical requirements required are gas such as oxygen and also mineral elements. The elements that are required are nitrogen and phosphorous.  The physical elements required include the temperature of the environment. According to temperature organism are classified into three groups. Psychrophilic microorganisms are found in the cold temperatures, mesophilic are the ones which are found in the moderate temperatures and the thermophilic are found in areas with high temperatures.

Final answer:

Microorganisms require nutrients, moisture, and an appropriate temperature range to grow and reproduce. These conditions facilitate the exchange of matter with the environment, which is vital for their life processes.

Explanation:

To ensure their growth and reproduction, microorganisms require certain conditions to be met. Three crucial things they need are:

Nutrients: Microorganisms need food, just like all living organisms. These nutrients can come from various sources, depending on the type of microorganism.Moisture: Water is essential for the biochemical reactions necessary for microbial growth.Appropriate temperature: Each microorganism has an optimal temperature range that supports its growth and reproduction.

By having access to these basic needs, microorganisms can exchange matter with the environment, which is critical for them to grow, reproduce, and maintain organization.

Skin color in humans is an example of a phenotypic trait that is determined by polygenic inheritance. three separate gene loci determine skin color (p, q and r), where each gene locus has an additive effect on skin color and the capital letters represent incompletely dominant alleles producing dark skin. what fraction of the children of a medium-toned (ppqqrr) mother and medium-toned (ppqqrr) father would exhibit the lightest possible skin color(genotype: ppqqrr)?

Answers

1/64 is the answer. Polygenic inheritance occurs when the characteristics is under the control of two or more genes. In the presence of large number of genes it is very hard to differentiate the effect of each individual gene in accordance to the Mendelian rules. 

Example, There are 3 genes let us designate with X, Y, Z. Each goes in two alleles. One express the trait (capital) and the other cannot express (lower case). These can have an additive effect. xx cannot contribute to trait and Xx genotype cane contribute to trait and AA would express more of the trait. The same thing would happen to other genes Y, Z.
Final answer:

The fraction of children with the lightest possible skin color in this case is 1.

Explanation:

Skin color in humans is determined by polygenic inheritance, meaning that it is influenced by multiple genetic factors. In this case, three gene loci (p, q, and r) determine skin color, with each locus having an additive effect. Capital letters represent incompletely dominant alleles producing dark skin. To determine the fraction of children with the lightest possible skin color (genotype: ppqqrr), we need to consider the inheritance patterns.

Both parents have the same genotype, ppqqrr, which means their children will also have this genotype.Since the alleles for dark skin are incompletely dominant, individuals with the genotype ppqqrr will have the lightest possible skin color.Therefore, all of their children will have the lightest possible skin color, resulting in a fraction of 1.

So, all of the children of a medium-toned (ppqqrr) mother and medium-toned (ppqqrr) father would exhibit the lightest possible skin color.

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When considering light moving through a diffraction grating, you should treat the light as A) both a particle and a wave. B) a particle. C) a wave. D) neither a particle nor a wave.

Answers

Answer:

A) both a particle and a wave

Explanation:

I just had this question on USA Test Prep so I know it is right.

Answer:

A) both a particle and a wave

Explanation:

You should treat the "light as both a particle and a wave.. Due to the way the light interacts after the grating, you can see a pattern of interference that can only be explained by waves.

A client who had surgery for a laryngectomy is returned to the surgical unit from the postanesthesia care unit. in which position is it most appropriate for the nurse to place the client at this time?

Answers

Answer: The appropriate position the nurse should do is the side-lying position and the semi-Fowler position helps to maintain the head in functional body alignment and facilitates respiration; also gravity moves the abdominal organs down and away from the diaphragm, facilitating respiratory excursion. Oral intake should not be attempted until the return of the gag reflex because the client could aspirate. Although some slight irritation may occur following this test, there is usually no painful squeal; oral intake would not be withheld because of painful swallowing, although the consistency of food may be changed. The statements that the performance of the graduate nurse is inappropriate because the client may be anxious or thirsty are not correct; additional factors must be considered.

if you flip a penny 99 times and each time it came up heads then the chance of the penny coming up heads is ___
a.1%
b.50%
c.25%
d.100%

Answers

The chances of heads as a result when flipping a penny will always be 50%. Although heads came up 99 times in a row, the events that occurred before will not affect the probability of the current event in terms of a coin flip.

There are 1 out of 2 chances of it occurring or 1/2. Divide that and multiply it by 100% to get the probability in percent. So the answer will be 50%.

The answer is B.

what is the wet-bulb depression?

Answers

The wet bulb depression is the difference between the dry-bulb temperature and the wet-bulb temperature. It is measured by a psychrometer . If there is 100% humidity, dry-bulb and wet-bulb temperatures are identical, making the wet-bulb depression equal to zero in such conditions. (In short; the difference between the temperature of a dry bulb and wet bulb.)

What does the large intestine extract water from undigested food?

Answers

By the time food and digestive juices reach your large intestine, most digestion and nutrient absorption has already taken place. The large intestine's major jobs are to absorb excess water and to prepare feces -- or undigested waste material -- for removal via the rectum and anus.
It absorbs excess water and  prepares feces.

Hope this helps !

Photon

Why does a plant cell need a cell wall of cellulose whereas an animal cell does not?

The cell wall houses chloroplasts, which animal cells do not need.

Only animals have a cytoskeleton, which serves the same function as a cell wall in plant cells.

Plant cells receive structure from the cell wall to help them remain upright, which animals do not need.

Water and minerals are transported through plant cell walls, whereas animal cells transport water and minerals through the cell membrane.

Answers

Hope the helped, you can read this and make a educated guess based off information given.

All cells have cell membranes, and the membranes are flexible. So animal cells canhave various shapes, but plant cells only have the shapes of their cell walls. That's nice for plants, because it gives them the ability to grow up and out, where they can get lots of sunlight for making their food.

Plant cells receive structure from the cell wall to help them remain upright, which animals do not need.

Galen's new baby is scrunching up her face, breathing irregularly, making little sounds, and moving her eyes rapidly back and forth under closed lids. galen asks you if this means the baby is waking up. from what you know about sleep cycles, your best answer would be _____.

Answers

The answer would be: No, the baby is most likely in the REM sleep stage

One of the cycles of sleep called Rapid Eye Movement or REM. In this cycle, the eye is moving constantly and intermittently. The eye movement is not voluntary and the baby is not a sign of waking up. This cycle is important, so the parent should not interrupt it by waking the baby.

Final answer:

Galen's new baby is likely in a phase of REM sleep, which is characterized by rapid eye movement, occasional body twitching and irregular breathing. This phase doesn't indicate the baby is waking up.

Explanation:

Based on the behavior Galen's new baby shows - scrunching up her face, breathing irregularly, making little sounds, moving her eyes rapidly back and forth under closed lids - it appears that she is probably in an REM (Rapid Eye Movement) sleep phase, not waking up. This phase of sleep is characterized by such eye movement and occasional body twitches. Babies spend a lot of time in REM sleep, which is crucial for the extraordinary brain development happening in their early life.

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What evidence would prevent scientists from classifying viruses as living organisms?

Answers

The evidence would prevent scientists from classifying viruses as living organisms that would need the scientists to see the organisms as per their phylogeny relationship.

What is the name of any living fossil ?

The name of a living fossil are the sedimentary rocks  such as with the multiple impressions with it.

Viruses are not made out of cells such  that  they can't keep themselves in a stable state as  they don't grow such that  they can't make their own energy as even though they definitely replicate and adapt to their environment, viruses are more like androids than real living organisms.

Proteins help to  diagnose the structures of the species via the type of  structures that are present in the structure in order to view the types of structures that are present in it.

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The correct option is A (i) and (iii)

Viruses are the smallest among all microorganisms.

Some scientists consider viruses nonliving because they are completely dependent on a host cell for all their vital processes.

Lack of cellular structure

Viruses lack a cellular structure and the cellular machinery needed to make proteins by themselves.Inability to maintain homeostasisViruses do not maintain homeostasis.Inability to reproduce on their ownViruses can only reproduce after they have invaded the cells of another organism.Inability to use their own energyOutside of a host cell, viruses do not use any energy and only become active when they come into contact with a host cell.

Once activated, they use the host cell's energy and tools to make more viruses.

Correct question is : Which of the following statement(s) is/are true about viruses?
i. Viruses are the smallest among the microorganisms
ii. Viruses can live freely
iii. Viruses use the host cell to reproduce
iv. Viruses do not have DNA or RNA
A. i and iii
B. ii and iv
C. i
D. iii and iv

Which of the following statements is true about the function of DNA in the body?
a.
DNA transfers cell products.
b.
DNA confers structure on the cell.
c.
DNA makes enzymes work more efficiently.
d.
DNA stores the information needed to make protein.,

Answers

DNA is the blueprint of the body. It contains all the instructions for putting the body together, this information is needed to make protein by encoding instructions for putting amino acids together.

DNA stores genetic information to make proteins in the body.

True statement about the function of DNA in the body: d. DNA stores the information needed to make protein.

DNA serves as the blueprint for cell structure and physiology, containing genetic information required for protein synthesis. This information is crucial for building structural proteins, enzymes, and all cellular components.

DNA's primary function is to store genetic information and direct the synthesis of proteins necessary for cell growth, reproduction, and cellular functions.

What are chemical mechanisms that start a reaction

Answers

To activate means to start, and activation energy starts the reaction, which means activators start the reaction. 

Answer: Activators

A water-treatment method in which water is filtered through a screen to eliminate chemical contaminants and microorganisms is known as a water-treatment method in which water is filtered through a screen to eliminate chemical contaminants and microorganisms is known as reverse filtration. chlorination. distillation. micron filtration.

Answers

I believe the water treatment stated above is micron filtration. Micron filtration is a water treatment method where water is filtered through screens that have microscopic holes. The holes are measured in microns and the smaller the hole the more contaminants can be removed.

Answer:

Option D, micron filtration.

Explanation:

Micron filtration is a process of water clarification in which waste or impure water is passed through a set of sieve which can be of any pore size depending upon the impurity type i.e the size of contaminants or micro organism

However in reverse filtration water is force to passed through a semipermeable membrane on application of pumping force. Distillation is a physical process of cleaning in which mixture is separated based on difference in boiling points and chlorination is addition of chlorine or its compounds.

Thus, option D is correct.

Which three groups contain large algae known as seaweeds? which three groups contain large algae known as seaweeds?

Answers

The three groups are green algae, red algae and brown algae.Seaweeds are a group of photoautotrophic, multicellular algae occurring  in marine environments. They are simple organisms that can perform photosynthesis. They have characteristics such as they are non-vascular plants, flowerless, seedless, lack embryos and cells contain chlorophyll among other characteristics. 

A chemoorganotroph and a photoautotroph in the same environment would not compete for

Answers

Chemoorganotrophs oxidize chemical bonds in organic compounds to obtain energy. Photoautotrophs are photosynthesizing organisms such as plants.
Since chemoorganotrophs obtain carbon directly from the organic compounds, whereas photoautotrophs obtain carbon from carbon dioxide. there would not be competition for carbon. 

Final answer:

Chemoorganotrophs and photoautotrophs would not compete for light energy as they have different energy sources, with the former relying on organic compounds and the latter on sunlight for photosynthesis.

Explanation:

A chemoorganotroph and a photoautotroph in the same environment would not compete for light energy, because chemoorganotrophs do not rely on light. Instead, they obtain energy by oxidizing organic compounds. In contrast, photoautotrophs like plants and algae use sunlight to convert carbon dioxide and water into organic compounds, a process known as photosynthesis. Therefore, these two types of organisms have different nutritional requirements and energy sources, reducing direct competition between them.

Chemoautotrophs are distinct from photoautotrophs because they extract energy from inorganic chemical compounds rather than from sunlight. Both types of autotrophs produce organic matter from carbon dioxide, but the source of energy for that process is different. Chemoautotrophs often thrive in environments devoid of sunlight, such as deep-sea hydrothermal vents, where they can utilize the chemical energy available from substances like hydrogen sulfide (H₂S).

The most reliable source of vitamin b12 for the vegan would be

Answers

almond is the most reliable source for vitamin b12

If 70 percent of the hypothetical population passed along allele b, the dominant allele for brown eyes, and 30 percent passed along allele b, the recessive allele for blue eyes, the proportion of the subsequent generation with brown eyes would be ___________, given the hardy-weinberg equilibrium.

Answers

Final answer:

The proportion of the subsequent generation with brown eyes is 0.91.

Explanation:

The proportion of the subsequent generation with brown eyes can be determined using the Hardy-Weinberg equilibrium equation. In this case, the equation is: p^2 + 2pq + q^2 = 1
where p^2 represents the proportion of individuals homozygous dominant for brown eyes (allele BB), 2pq represents the proportion of individuals heterozygous for brown eyes (allele Bb), and q^2 represents the proportion of individuals homozygous recessive for blue eyes (allele bb).
Given that 70% of the population has allele B (brown eyes) and 30% has allele b (blue eyes), we can calculate the proportion of individuals with brown eyes as follows:
p^2 = (0.7)^2 = 0.49
2pq = 2(0.7)(0.3) = 0.42
q^2 = (0.3)^2 = 0.09

Therefore, the proportion of the subsequent generation with brown eyes would be 0.49 (homozygous dominant) + 0.42 (heterozygous) = 0.91.

The nurse is taking a history on kumar, who informs her that he has an allergy to adhesive tape. when the nurse asks kumar to describe his reaction to the tape, he describes it as "blotchy and reddened." what type of allergic reaction is this?

Answers

I believe the correct answer is hives.

Which type of muscle tires quickly during exercise. smooth muscle breathing muscle skeletal muscle cardiac muscle?

Answers

the skeletal muscle

What are some factors of diseases that researchers look at in deciding whether or not a disease is appropriate for gene therapy?

Answers

With its potential to eliminate and prevent hereditary diseases such as cystic fibrosis and hemophilia and its use as a possible cure for heart disease, AIDS, and cancer, gene therapy is a potential medical miracle-worker.

Having an extra finger is a dominant condition. a woman is homozygous dominant for an extra finger and her husband is homozygous recessive. what phenotypes do the offspring have and in what proportions

Answers

Answer:100% offspring has extra finger

Let say that the dominant gene for extra finger is F and the recessive gene if f. That means the parent genetic would be:
Mother: homozygous dominant = FF
Possible allele: 100% F

Father: homozygous recessive= ff
Possible allele: 100% f

Since the father has 100% chance to give f allele and the mother has 100% of giving F allele, then the offspring would be:
100% Ff (heterozygous). Since the extra finger condition is dominant, a heterozygous individual will express the extra finger condition.

Studies conducted in England during the industrial revolution have shown that children born to poor families were on average shorter than those born to wealthy parents. The most likely explanation for the difference in height is difference in

Answers

The answer is nutrition. Much like the difference between the height of people today and our grandparent's generation. Improved nutrition among wealthy families means that the bodies of the members of those families could reach their full potential height as limited by their genetics, and environmental factors did not come into play. In other words, the heights of poorer people are limited by both nurture and nature, whereas those of wealthyl people are limited only by nature.

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What prediction can you make about the impact of these threats on the resident populations versus the transient populations?

A) The resident populations are more likely affected by these threats because of their proximity to shore.
B) The resident populations and the transient populations are likely to be equally affected by these threats.
C) The transient populations are more likely affected by these threats because of their distance from shore.
D) Neither the resident populations nor the transient populations are likely to be affected by these threats in the future.

Answers

Answer: A) The resident populations are more likely affected by these threats because of their proximity to shore.

Explanation:

All of these threats are higher in coastal regions.

As contaminants usually reach the ocean through rivers or because of coastal cities, the highest degree of pollution is there. All chemicals will accumulate in this region first, before they disperse into the offshore region. This is also caused by the fact that the coastal waters have a lower volume and surface area than the offshore which results in a higher degree of contamination.

Vessels are very similar to contaminants, as the number of vessels is highest in coastal waters, where ports are also placed. Vessels spread over large areas in offshore waters will gather in coastal waters as they enter the port. Recreational vessels not suited for open ocean are also numerous here.

Prey availability also is lower in coastal regions due to human activities such as pollution and fishing (which decreases the prey population), as well as vessels (which may scare the prey away or deteriorate their habitat).

Answer:

A Resident populations are more likely affected by these threats because of their proximity to shore

Explanation:

just took the test and got it right

Red blood cells contain approximately a 2% concentration of solutes. a red blood cell is placed into a solution that contains a 4% concentration of solutes to which the cell is not permeable. what will happen to the red blood cell?

Answers

I believe that the cells will decrease in size as water flows out of it. The red blood cell is hypotonic to the the solution while the solution is hypertonic, therefore, the blood cells losses water osmotically and decrease in size. Water moves from inside the cell to the outside by osmosis. The end result is the shrinking of the red blood cells.
Final answer:

The red blood cell will undergo crenation due to the surrounding hypertonic solution. Water from inside the cell will move out to the solution causing the cell to shrink and possibly leading to the cell's death.

Explanation:

When a red blood cell, which has a 2% concentration of solutes, is placed in a solution with a 4% concentration of solutes to which the cell can't permeate, the environment around the cell is considered hypertonic. This means that the concentration of solutes outside the cell is higher than inside the cell. In reaction to this, water in the red blood cell will move out of the cell to the surrounding solution in an attempt to balance the concentration of solutes. This process is known as osmosis.

As a result, the red blood cells will lose water and shrink, a process called crenation. This concentration of solutes in the cell will increase, making the cytosol denser which can interfere with diffusion within the cell. The functioning of the red blood cell will be compromised and it might lead to the cell's death due to the loss of water and inability to maintain its necessary functions.

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The opening between the right atrium and the right ventricle is controlled by the

Answers

I think the answer is the vitral valve..dbl check plse..

A client who has been having recurrent attacks of severe abdominal pain over the past few months informs the physician about a 25-pound weight loss in the past year. the nurse attributes which factor as the most likely cause of this weight loss?

Answers

  skipping  meals   due  to   fear  of painful  attack   is  what  attribute  to  weight  loss  to  a  the   client   who  have  attacked  by  severe  abdominal  pain  and   have   about   25  pound  weight  loss  in  the  past  year

   The  weight   loss  is   is  attributed     by  chronic  pancreatitis  disease  and  weight   loss   is  major  problem  in  chronic  pancreatitis.   this  weight  loss  is usually  caused  by   decreased  dietary intake.

In pea plants, tall (T) plants are dominant over short (t) plants. If a heterozygous (Tt) pea plant is crossed with a homozygous dominant (TT) pea plant, all of the resulting pea plants should be tall (TT or Tt). Each plant will receive a dominant allele from the homozygous dominant plant, while they could receive either a dominant or recessive allele from the heterozygous plant.

The fact that each plant gets only one allele from each parent plant is detailed in the law of _______.
A.
genetic inheritance
B.
multiple alleles
C.
independent assortment
D.
segregation

Answers

Answer: d. segregation

Explanation: i did it:)

The fact that each plant gets only one allele from each parent plant is detailed in the law of segregation. The correct option is D.

What is law of segregation?

The law of segregation, also known as Mendel's first law, explains how pairs of alleles segregate during gamete formation in parents and recombine during fertilisation to form the genotype of offspring.

According to the law, two alleles for each gene segregate from each other during gamete formation, so that each gamete receives only one of two alleles.

This segregation ensures that each offspring inherits only one allele from each parent, and it serves as the foundation for the dominance and recessiveness principle, which states that one allele may mask expression of another.

The law of segregation explains how, in the given scenario, the offspring of a cross receive only one allele from each parent, resulting in all offspring being either Tt or TT and exhibiting the dominant phenotype of tallness.

Thus, the correct option is D.

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