. Buffer solution resists change to its pH when small amounts of an acid or an alkali are added to it. Buffer solutions can be used to keep the pH of a substance constant during an experiment. For example, if pH 5.5 buffer solution is added to a mixture of amylase and starch solution, the pH of the mixture will remain constant at 5.5. The student has the following buffer solutions available: 5.5, 6.0, 6.5, 7.0, 7.5 and 8.0. Describe how the student can adapt the tube experiment to investigate the effect of pH on the action of amylase.

Answers

Answer 1

Answer:

hey

Explanation:


Related Questions

A response to an unconditioned stimulus that occurs naturally without learning is known as a(n) __________ response.
A. neutral
B. conditioned
C. reconditioned
D. unconditioned

Answers

Answer:

it is going o be B. conditioned

Answer:

D

Explanation:

edge

A.While the traits studied in Exercise 1 were hypothetical genetic traits, what type of genetic traits do you think are important to study and predict

Answers

Answer:

Genetic disturbances harmful to the organism are genetic characteristics that must be studied and predicted.

Explanation:

Genetic disorders that harm an organism such as sickle cell anemia, hemophilia, Turner syndrome, among others, are important to be studied and predicted, because it will provide better maintenance of that organism. Allowing people who inherit these characteristics to have more efficient treatments and a better life, since the prediction of these characteristics allows the family to establish better adapapitativo methods, that will make the life of this individual easier and with more quality.

What percentage of the nation’s demand for electricity could be produced in the future by wind energy?

Answers

Answer:

5-10%

hope this is helpful

Why are G proteins known as guanine nucleotide-binding protein?

Answers

Answer:

G proteins, also known as guanine nucleotide-binding proteins, are a family of proteins that act as molecular switches inside cells, and are involved in transmitting signals from a variety of stimuli outside a cell to its interior. ... G proteins belong to the larger group of enzymes called GTPases.

If a person had not drunk any water for 8 hours before collecting a sample, would you expect his/her urine to have a high or low specific gravity? Why?

Answers

Answer:

The person’s urine will have a high specific gravity

Explanation:

A high specific gravity is characterized by an increased concentration of solutes in the urine of am individual. A low specific gravity is characterized by a low or decreased concentration of the solutes.This is usually due to dehydration as a result of environmental conditions or tedious physical activities.

This explains why a person who had not drank any water for 8 hours and is dehydrated before collecting a sample is thought to have a urine with a high specific gravity

Which sentence about protist is accurate

Answers

Answer:

there are no sentences

Explanation:

When the body cells are hypotonic to the blood plasma, water will move from intracellular fluid to extracellular fluid.
A. True
B. False

Answers

Answer:

True

Explanation:

why are g protein important for drug discovery?

Answers

Answer:

G protein - coupled  receptors(GPCRs)n belong to a large family of signaling proteins that  mediate cellular  reponses to most hormones ,metabolites,cytokines and neuotransmitters and therefore serve as fritful targets for DRUGS DISCOVERYS.

Explanation: histamine(HRH1),serotonin dopamine,opiod and adrenergic receptors.

I HOPE IT'S HELPS YOU TO UNDERSTAND

QUICKLY! The chemical reaction equation of photosyntesis is shown here: What information is not given in this equation. It does not show if the reaction is reversible. It does not show the reactants needed for the reaction. It does not show that photosynthesis consists of many separate steps. It does not show the number of molecules required to produce glucose.

Answers

Answer:

C: It does not show that photosynthesis consists of many separate steps.

Explanation:

Photosynthesis is a unique process carried out by the cells of autotrophic organisms. It is the process whereby they synthesize their own food in form of sugars (glucose) in the presence of sunlight. Ideally, the photosynthetic process makes use of carbon dioxide (C02) and water (H20) in the presence of light energy (from sun) to produce glucose sugar (C6H12O6) and oxygen (02). The general photosynthetic equation is as follows:

6CO2 + 6H20 + light → C6H12O6 + 6O2

However, the process is not as simple as portrayed as it involves many separate steps that collectively forms the photosynthetic product (glucose). Photosynthesis occurs in two major stages namely: light stage and light independent stage, which in turn consists of series of reactions that forms the products.

Therefore, the equation attached to this question describes photosynthesis but It does not show that photosynthesis consists of many separate steps.

Answer:

C: It does not show that photosynthesis consists of many separate steps.

Explanation:

A mutation that hides the effect of another mutation at a site that is distinct from the site of the original mutation, but with in the same gene. This mutation is best described as a

Answers

Answer:

The correct answer is intragenic suppressor mutation.

Explanation:

A suppressor mutation partially or completely converses the effects of a different mutation. A suppressor mutation is of two kinds, that is, an intragenic suppressor and an intergenic suppressor. An intragenic suppressor converses the influence of a mutation at a distinct site in a similar gene.  

On the other hand, an intergenic suppressor converses the influence of a mutation at a distinct locus of the gene. It is the intragenic suppressor mutation, which takes place in a similar gene where the occurrence of the first mutation had taken place. Therefore, the mutation, which hides the influence of another mutation at a location, which is different from the location of the original mutation, but taking place in a similar gene can be illustrated as the intragenic suppressor mutation.  

(06.03 LC) Which of the following is an example of how HIV can be transmitted from one person to another? Contact between infected blood and a mucus membrane Contact between infected saliva and an open wound Contact between infected blood and skin Contact between infected saliva and lining of mouth

Answers

Answer:

i believe the answer is contact between a infected blood and a mucus membrane

Explanation:

____________ a regulatory protein that may bind DNA to inhibit transcription. ____________ a DNA sequence that binds a regulatory protein. ____________a DNA sequence that binds RNA polymerase and regulates transcription. ____________a compound that interacts with another protein or compound to form an active repressor ____________a compound that induces or activates transcription, such as lactose.a. Repressorb. Operator c. Promoterd. Corepressore. Inducer

Answers

Answer:

A repressor is a regulatory protein that may bind DNA to inhibit transcription. An operator is a DNA sequence that binds a regulatory protein. A promoter is a DNA sequence that binds RNA polymerase and regulates transcription. A corepressor is a compound that interacts with another protein or compound to form an active repressor. An inducer is a compound that induces or activates transcription, such as lactose.

Explanation:

Repressor proteins bind to DNA and RNA to suppress target gene expression. A DNA repressor blocks transcription by inhibiting the attachment of RNA polymerase to the promoter sequence, while an RNA repressor bind to the mRNA to block translation of the protein. An operator is a DNA sequence required for the attachment of transcription factors. The genes that are transcribed by the binding of a transcription factor to an operator sequence are collectively referred to as an operon. Operons are generally found in prokaryotes but they also can be found in some eukaryotes including Caenorhabditis elegans and Drosophila melanogaster. An inducer is a molecule that activates gene transcription either by binding to repressors/corepressors (thereby inactivating their functions) or by binding activators. For example, the allolactose act as an inducer of the lac operon.

I need help with this

Answers

Answer:

I know the answer

Explanation:

Yes

Yes

Yes

The main function of a cell membrane is to allow substances to enter and leave the cell. Which is a correct description of transport through a cell membrane

Answers

Answer:

The question is incomplete, below is the completed question:

The main function of a cell membrane is to allow substances to enter and leave the cell. Which is a correct description of transport through a cell membrane ?

a. Diffusion, or passive transport, occurs when molecules diffuse from a lower concentration to a higher concentration.

b. Facilitated transport occurs when proteins that extend through the cell membrane provide a channel through which certain substances can diffuse more rapidly than by passive diffusion.

c. The lipid bilayer opens up and allows the ions or molecules to enter the cell, then closes.

d. Active transport occurs when molecules diffuse from a higher concentration to a lower concentration.

Answer:

b. Facilitated transport occurs when proteins that extend through the cell membrane provide a channel through which certain substances can diffuse more rapidly than by passive diffusion.

Explanation:

Transport through cell membranes can be broadly classified as active transport or passive transport.

Active transport requires energy in the form of ATP for the transportation of substances across the cell membrane.

Option b correctly describes facilitated diffusion, which is a passive-mediated diffusion process, where channels in the cell membrane mainly composed of proteins called transmembrane integral proteins, allow for the movement of certain molecules (mostly polar/hydrophilic) molecules that will not otherwise be transported through simple diffusion because of the hydrophobic nature of the cell membrane.

The other options are wrong because:

a. diffusion or simple transport involves the movement of substances from regions of higher to a lower concentration not lower to higher as suggested here.

c. The lipid bi-layer does not allow ions or hydrophilic molecules because it is hydrophobic in nature, and it is not a channel, so it does not open and closes

d. In active transport, transfer of molecules is from regions of lower to higher concentration and not higher to lower concentration as suggested here.


is the basic unit of structure and function of living things.

Answers

Answer:

cells

Explanation:

is the basic unit of life :)

RNA polymerase is an enzyme that copies (1 point)
o DNA into DNA.
O RNA into mRNA
O mRNA into tRNA.
DNA into RNA

Answers

Answer:Copies DNA into RNA

Explanation:

Knowledge of the driver mutations underlying cancer has led to targeted therapeutics, such as the protein kinase inhibitor imatinib (trade name Gleevec) in cases of chronic myeloid leukemia. Cancer cells often become resistant to a given drug, so researchers continue searching for new drugs that target proteins that contribute to the cancerous phenotype. One recent promising approach uses drugs that lead to ubiquitination and proteasomal degradation of the target protein. Which of the following mutated proteins are good candidates for this approach?
A) oncogenes
B) proteins with loss-of-function mutations
C) proteins with gain-of-function mutations
D) tumor suppressor genes

Answers

Answer:

C) proteins with gain-of-function mutations

Explanation:

Gain-of-function mutations: In biology, the term "gain-of-function mutation" is described as one of the different types of mutation in which the altered or changed "gene product" consists of an entirely new pattern or molecular function associated with gene expression. However, the "gene-of-function mutations" are being always considered as "Semidominant or Dominant".

In the question above, the correct answer is option C.

In the image, the arrow Is pointing to a celestial object. Which attribute disqualifies the object from being a planet?
A. It appears to have no moons.
B. It is spherical in shape.
C. Its neighborhood is not clear.
D. It has horizontal bands on its surface.

Answers

The correct answer is C. Its neighborhood is not clear.

Explanation:

One of the key features of a planet is that it clears its neighborhood; this means the planet gravitational force is strong enough that there are no other celestial bodies on its orbit or next to it except by its moons or satellites. This does not occur in the image presented because there are smaller celestial bodies near to the main or bigger celestial body. This likely occurs if the celestial body is not big enough to clear its neighborhood, and therefore it is not a planet.

A paleontologist finds a relatively complete skeleton but isn’t sure if it is an ape fossil or a hominid fossil. Which of the following features would NOT help distinguish between the two choices?
a. position of the opening in the skull for the spinal cord
b. design of the pelvis
c. relative length of the hind limbs
d. position of the eyes

Answers

c. relative length of the hind limbs. Overall fossilized apes and hominids are 90+% similar in the past 3.5 million years since Australopithecus afarensis but this one aspect of upper vs. lower limbs is the greatest difference. Hope this helps!

ABO blood type is examined in a Taiwanese population, and allele frequencies are determined. In the population,
f (IA) = 0.30,
f(IB) = 0.15, and
f (i) = 0.55.
What are the frequencies of the various genotypes and various phenotypes in this population? Assume Hardy-Weinberg equilibrium.

Answers

Answer and Explanation:

Due to technical problems, you will find the answer and explanation in the attached file.

Choose only one correct option. Explanation needed.

Answers

Answer: D

only green plants

Answer:

[tex]\large \boxed{\mathrm{D. \ Photosynthesis}}[/tex]

Explanation:

Photosynthesis is a characteristic present in plants. Photosynthesis is a process where plants transform light energy into chemical energy. Reproduction, respiration, and excretion are all characteristics of living organisms.

What complications might arise from genetic screens targeting an organ that differentiates late in development?

Answers

Answer:

No sign of testicular development in boys and breast development in girls.

Explanation:

Complications like no sign of testicular development in boys and breast development in girls occurs if an organ develop very late. There are many causes of this type of complications such as long term illness, eating improper food and disorder of sexual development. Sometime these complications  also occurs due to genetically. These complications should be treated well with medication and use of nutritious food. These medicines increases the performance of sex hormones in order to initiate puberty.

all of the following are examples of organic matter soil except

Answers

This question is incomplete; here is the complete question:

All of the following are examples of organic matter soil except

A. Decaying plants

B. Bacteria

C. Fungi

D. Water

The answer to this question is D. Water

Explanation:

Organic matter derives from living beings, due to this, organic matter is considered as a biological product. In this context, materials such as decaying plants are organic matter because they derive from living organisms and contain biological molecules (most contain carbon). This category does not apply to water, which is composed of hydrogen and oxygen and does not derive from living beings. Thus, the one that is not organic matter is water.

Answer:

D. Water

Hope this Helps!! :))

Which of the following best explains the potential health problems associated with endocrine disruptors? A) Endocrine disruptors are the only available pesticides,hence they are used widely. B) Endocrine disruptors mimic hormones that regulate critical biological processes. C) Endocrine disruptors do not biodegrade, remaining toxic years after their release. D) There are no major health problems associated with exposure to endocrine disruptors. E) Endocrine disruptors encompass a wide array of toxic pesticides.

Answers

B) Endocrine disruptors mimic hormones that regulate critical biological processes.

Endocrine disruptors, at times moreover called as hormonally unique trained professionals, endocrine disturbing engineered substances, or endocrine upsetting blends are manufactured substances that can interfere with endocrine structures. These aggravations can cause threatening developments, birth flees, and other developmental issues.

The potential health problems associated with endocrine disruptors is that Endocrine disruptors mimic hormones that regulate critical biological processes.

For more information:

https://brainly.com/question/22965068?referrer=searchResults

Answer:

It's A.) Endocrine disruptors mimic hormones that regulate critical biological processes.

Explanation:

Quizlet gave me the answer

The diagram represents a food pyramid. The concentration of the pesticide DDT in individual
organisms at level D is higher than the concentration in individuals at level A because DDT is
A. produced by organisms at level C ingested by
those in level D
B. passed through levels A, B, and C to organisms
at level D.
C. excreted by organisms at level A as a toxic
waste.
D. synthesized by organisms at level D.

Answers

Answer:

The answer is "Choice b".

Explanation:

In the given question diagram is missing. so first, we define the diagram after that we explain why the above given choice is correct.  

In the attached file the food pyramid can be a divide into the level, in which the D pesticides use the "dichloro-diphenyl-trichloroethane ", which concentration is higher than its entities from the level of A because DDT is transferred with species at level D by levels A, B, and C, that's why the choice "b" is correct.  

Which conclusion can be drawn from the experimental observation that a single strand of DNA contains 2100 dA residues and 1800 dT residues?

Answers

a. There must have been some loss of material in the extraction because the number of dA and dT residues must be the same.

b. This is a palindromic sequence.

c. There must be 2100 dT and 1800 dA residues on the complementary strand.

d. This must be prokaryotic DNA

e. None of these

Answer:

c. There must be 2100 dT and 1800 dA residues on the complementary strand.

What makes up the backbone of a DNA molecule? nucleic acids RNA molecules sugars and phosphates ribose and deoxyribose

Answers

Base, sugar and phosphate and deoxyribose make up a nucleotide on a DNA molecule

Answer:

sugars and phosphates

Explanation:

gradpoint

Which location is least likely to experience a volcanic eruption? Α. an island hot spot, such as the island of Hawaii B. Hamilton County on the plains of central Texas с. a convergent boundary, as in the Ring of Fire D a volcanic island arc, such as the Aleutian Arc in Alaska

Answers

Answer:

i think that the answer is B. Hamilton County on the plains of central Texas i took the test

Explanation:

Hamilton County on the plains of central Texas is least likely to experience a volcanic eruption. Therefore, option (B) is correct.

What are volcanoes?

Molten rock and gases stored under the surface erupt through a volcano, generating a hill or mountain.

Active, inactive, or extinct volcanoes. Active volcanoes are likely to erupt again. Dormant volcanoes may erupt again. Extinct volcanoes won't erupt.Magma collects inside active volcanoes. The magma chamber's pressure forces it through rock channels and onto the planet's surface.

Volcanic eruptions can be violent or slow-moving. Volcanoes erupt through vents on the sides or a primary entrance at the top. The volcano's morphology depends on eruption rate and magma chemistry. Land and sea volcanoes exist. As lava cools and hardens, underwater volcanoes build mountains and ranges. When volcanoes rise above the ocean, they create islands.

Learn more about volcano, here:

https://brainly.com/question/18058649

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Other Questions
simplify the equation. (5xE2 - 3x) - (5xE2 - 3x+1) 10. Write a word problem for this equation:n ($25) = $125 To test the belief that sons are taller than their fathers, a student randomly selects 13 fathers who have adult male children. She records the height of both the father and son in inches and obtains the following data. Are sons taller than their fathers? Use the alphaequals0.10 level of significance. Note: A normal probability plot and boxplot of the data indicate that the differences are approximately normally distributed with no outliers.Height of Father Height of Son72.4 77.570.6 74.173.1 75.669.9 71.769.4 70.569.4 69.968.1 68.268.9 68.270.5 69.369.4 67.769.5 6767.2 63.770.4 65.5Which conditions must be met by the sample for this test? Select all that apply.A. The sample size is no more than 5% of the population size.B. The differences are normally distributed or the sample size is large.C. The sample size must be large.D. The sampling method results in a dependent sample.E. The sampling method results in an independent sample.Write the hypotheses for the test. UpperH 0 :H 1 :Calculate the test statistic. t 0=? (Round to two decimal places as needed.)Calculate the P-value. P-value=?(Round to three decimal places as needed.) Should the null hypothesis be rejected? Do not reject or Reject Upper H 0 because the P-value is less than or greater than the level of significance. There is or is not sufficient evidence to conclude that sons are the same height or are shorter than or are taller than or are not the same height as their fathers at the 0.10 level of significance. Click to select your answer(s). Often, myths are based on events that actually happened. How does a story become a myth rather than history? Historians decide that the event actually could have happened that way. As people retell the story, they add extra details to make the story more impressive. Once the story becomes part of history, people decide to add parts to it. A mythologist writes a book that includes a factual description of the event. Aman paid 15600for a newcar. Hewas given a discount of7%. Find the marked priceof the car find the perimeter of the quadrant whose radius is 21cm In concert with quality management programs, _______ controls help monitor the quality of goods or services at each step in the production process to alert managers to problems. feedforward concurrent feedback bureaucratic clan Records indicate that x years after 2008, the average property tax on a three bedroom home in a certain community was T(x) =20x^2+40x+600dollars. Required:a. At what rate was the property tax increasing with respect to time in 2008? b. By how much did the tax change between the years 2008 and 2012? Explain what a limiting reactant is and describe the process to determine the limiting reactant in the example listed below: Given 3.4 grams of x compound with a molar mass of 85 g and 4.2 grams of y compound with a molar mass of 48 g How much of compound xy can be generated 2x + y2 = 2xy Sheridan Company, had 837000 shares of common stock issued and outstanding at December 31, 2017. On July 1, 2018, an additional 40600 shares of common stock were issued for cash. Sheridan also had unexercised stock options to purchase 31400 shares of common stock at $15 per share outstanding at the beginning and end of 2018. The average market price of Sheridan's common stock was $20 during 2018. What is the number of shares that should be used in computing diluted earnings per share for the year ended December 31, 2018 Identify the sentence that has the subordinating conjunction underlined and is punctuated correctly.A. Please take a few minutes to help me clean up, even if you feel you are too busy.B. We have to finish our work, before we can play a game.C. Although it is not fun to do chores everyone must do their share.D. You must finish your homework early because we have a busy night. An atom of 120In has a mass of 119.907890 amu. Calculate the mass defect (deficit) in amu/atom. Use the masses: mass of 1H atom What is the solution to this system of linear equations?y-x = 6y + x = -10(-2,-8)(-8.-2)(6.-10)(-10.6) Help please all questions. Carlos is using the software development life cycle to create a new app. He has finished coding and is ready to see the output it produces. Which stage of the software development life cycle is Carlos ready for next? Coding Design Maintenance Testing William Bradford was one of the elected governors for which group of colonies? Please help with this Harry and Sally formed the Evergreen partnership by contributing the following assets in exchange for a 50 percent capital and profits interest in the partnership. Basis Fair Market Value Harry: Cash $30,000 $30,000 Land $100,000 $120,000 Totals $130,000 $150,000 Sally: Equipment used in business $200,000 $150,000 Totals $200,000 $150,000 a. How much gain or loss will Harry recognize on the contribution? b. How much gain or loss will Sally recognize on the contribution? c. Should Sally consider selling the property to the partnership rather than contributing it? A. YesB. No What is the reason for using short sentences at the beginning of this article?O The author wanted to become more famous.O The author wants to describe things clearly.O The author wants to analyze important details.O The author wants to get the readers' attention. Solve for x. 3x-91>-87 AND 17x-16>18