What is the temperature of lactase catalyzed reactions in mammals?.
Answers
The temperature of lactase-catalyzed reactions in mammals is around 37°C (98.6°F). Lactase is an enzyme that breaks down lactose, the sugar found in milk.
Lactase-catalyzed reactions occur in the small intestine of mammals, where lactose is present in the diet.
Lactase is a critical enzyme because it allows mammals to digest lactose, which is present in milk.
Mammals stop producing lactase after weaning, which is why many people are lactose intolerant, meaning they cannot digest lactose properly.
However, some populations have evolved to maintain lactase production into adulthood, allowing them to continue consuming milk and other dairy products.
There are various factors that affect lactase activity, including temperature, pH, and the presence of other substances.
In general, lactase activity is highest at the optimal temperature of 37°C. At higher or lower temperatures, lactase activity decreases.
This is because enzymes are proteins, and their activity is affected by changes in temperature. At temperatures above the optimal temperature, the enzyme can denature, or lose its shape, and become inactive.
At temperatures below the optimal temperature, the enzyme's activity slows down because the molecules move more slowly. Therefore, 37°C is the ideal temperature for lactase-catalyzed reactions in mammals.
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Related Questions
what are the three distinct stages in the catabolism of glucose?
Answers
The three distinct stages in the catabolism of glucose are glycolysis, the citric acid cycle, and oxidative phosphorylation.
Glycolysis: It is the process of breaking down glucose into pyruvate, and it is the first stage of cellular respiration. Glycolysis occurs in the cytoplasm, and it does not require oxygen, which means that it is an anaerobic process. The Citric Acid Cycle: This stage of cellular respiration is also called the Krebs cycle, and it occurs in the mitochondrial matrix. In this stage, pyruvate is broken down further, and the products of the breakdown are used to generate energy.
Oxidative Phosphorylation: This is the final stage of cellular respiration, which occurs in the inner mitochondrial membrane. It involves the transfer of electrons from electron carriers, such as NADH and FADH2, to oxygen. The energy released by this process is used to produce ATP.
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1. which of the following statement describe how the prokaryotic cells appear compared to the eukaryotic cells? A. the prokaryotic cells have cell membrane will the aquatic cells do not. B. the prokaryotic cells have a nucleus while the aquatic cells do not. C.the prokaryotic cells are much smaller than the aquatic cells D. the prokaryotic cells have cytoplasm and ecori attic cells do not.
2. Does a prokaryotic cell have a cell wall?
Answers
The prokaryotic cells appear much smaller than the aquatic cells when compared to the eukaryotic cells.
Prokaryotes are one of the oldest groups of living organisms on the planet, with fossil records dating back nearly 3.5 billion years. Prokaryotic cells are those that lack a true nucleus or membrane-bound organelles. These are microbes with one cell. Bacteria and Archaea are examples of prokaryotes, while cyanobacteria are examples of photosynthetic prokaryotes.
Eukaryotes are larger and more complex than prokaryotes. Except for Kingdom Monera, they include almost all of the major kingdoms.
Eukaryotes have a cell wall, which supports and protects the plasma membrane. The plasma membrane surrounds the cell and regulates the entry and exit of various substances.
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Cross a hemophilia female with a normal male. Why is there a 100%
chance of the sons having hemophilia?
Answers
Answer:
No
Explanation:
The normal male would need it in order to have a son with hemophilia.
what are the types of human grafts.somebody help
Answers
Allogeneic graft: The skin will be taken from another person
Isogeneic graft: The recipient and the donor will be genetically identical (identical twins)
Xenograft: Also termed as xenogeneic, the donor and the recipient will be of different species
Laboratory-grown: Under this one, the skin cells will be taken the patient or the donor, so as to grow new skin
Prosthetic: The procedure will be done using prosthetic implants, that is, synthetic materials such as metal, plastic, or ceramic
Explain the relationship between these terms photosynthesis chlorophyll thylakoids chloroplasts
Answers
Answer:
In photosynthesis, oxygen, carbon dioxide, ATP, and NADPH are reactants. GA3P and water are products. In photosynthesis, chlorophyll, water, and carbon dioxide are reactants. GA3P and oxygen are products
Answer:
Photosynthesis occurs in the chloroplasts.
Chloroplasts capture light energy.
Thylakoids can be found inside chloroplasts, where light-dependent reactions occur.
Chlorophyll is found in the thylakoids.
Chlorophyll absorbs light energy.
Chlorophyll is what makes plants look green.
What are two reasons scientists classify organisms into groups?
A. To make it easier to communicate about organisms
B. To make sure scientists get credit for their discoveries
C. To understand why different organisms exist on earth
D. To understand how different organisms are related
Answers
Answer:
The answer is C and D.
Explanation:
To classify organisms into group is to understand why different organisms exist and how are they related .
(Correct me if I am wrong)
The two reasons scientists classify organisms into groups -
A. To make it easier to communicate about organisms
D. To understand how different organisms are related
Classification of organismScientists classified all the living beings into different kingdoms, phyla, classes, etc, and are based on different criteria. Living organisms are classified mainly make the study of organisms easy.
how various organisms are related to each other and easier to communicate about organisms by classification. It helps in avoiding confusion about their regional name and helps in called by a specific pattern universally.
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Which term refers to the energy an object has due to its position? A Electrical energy B. Potential energy C. Thermal energy D. Kinetic energy
Answers
Answer:
Option B
Explanation:
Using the process of elimination, we will find this answer.
It's not option A because electrical energy involves electricity and has nothing to do with motion/position, although you can build machines fueled on electrical energy to create motion or position. (Hence; vehicles)
It is option B because potential energy is energy the object has when it's at rest, which means when the object remains in the same position it has potential energy.
It's not option C because thermal energy involves heat which you could use heat energy and convert it into electrical and then build a machine that is fueled on electrical energy that creates motion or position. (Hence; boats)
It's not option D because Kinetic energy is purely energy when a object is in motion, has nothing to do with a position of a object. As long as the object is moving it has kinetic energy.
Your answer is option B or "potential energy."
Hope this helps.
Differences Between DNA and RNA include all of the following except that
Answers
DNA and RNA differ in structure, function, and synthesis. They have distinct roles in storing and transmitting genetic information, and in protein synthesis.
DNA (Deoxyribonucleic acid) and RNA (Ribonucleic acid) are the two essential nucleic acids found in living organisms. They both are composed of nucleotides, which are the building blocks of the nucleic acids. DNA and RNA are responsible for the storage, transmission, and interpretation of genetic information in living organisms.There are some differences between DNA and RNA.
Some of them are listed below: Structure: DNA is a double-stranded molecule that forms a helical shape, while RNA is usually single-stranded, but can form a helical shape in some instances. DNA is a long polymer that consists of repeating units called nucleotides. In contrast, RNA is usually much shorter than DNA, consisting of only a few hundred nucleotides. Function: The primary function of DNA is to store and transmit genetic information, whereas the primary function of RNA is to transfer genetic information from DNA to the ribosomes where proteins are synthesized.
Transcription and Translation: Transcription is the process in which DNA is used as a template to produce RNA, while translation is the process in which the information carried by RNA is used to synthesize proteins. DNA is transcribed into RNA by the enzyme RNA polymerase, whereas RNA is translated into proteins by the ribosome.Differences between DNA and RNA include all of the following except that they have the same function. DNA and RNA differ in their structure, function, and the way they are synthesized and utilized. They are both important nucleic acids, but they have different roles and properties in living organisms.
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Scientists want to track the wind speeds and precipitation for a hurricane that will affect the entire East Coast of the United States. Which weather equipment would be best to measure the impact of the storm for this entire region? A. an anemometer B. a rain gauge C. Doppler Radar D. global positioning system (GPS)
Answers
Answer:
A anemometer an instrument for measuring the speed of the wind, or of any current of gas.
GPS is to see where you on on the earth so this is a no.
rain gauge only shows the amount of rain so this is a no
Doppler radar determine's the location and velocity of a storm, clouds, precipitation. So therefore, this is your answer.
Explanation:
what is a biological detergent and how does it work
Answers
Can you please give me brainiest :)
9. Which statement describes how DNA, RNA and proteins are related?
a RNA copies DNA and uses the information to make proteins .
b. Protein produces DNA, which then puts RNA together.
c. DNA is made up of RNA and protein
. d. DNA and RNA are two different types of proteins.
Answers
explanation :
Which step of the scientific method do you perform after you collect data and
observations?
O A. Form a hypothesis.
O B. Conduct an experiment.
OC. State the problem.
O D. Draw conclusions.
Answers
Answer:
D. Draw conclusions
Explanation:
The scientific method
At the core of biology and other sciences lies a problem-solving approach called the scientific method. The scientific method has five basic steps, plus one feedback step:
Make an observation.
Ask a question.
Form a hypothesis, or testable explanation.
Make a prediction based on the hypothesis.
Test the prediction.
Iterate: use the results to make new hypotheses or predictions.
The scientific method is used in all sciences—including chemistry, physics, geology, and psychology. The scientists in these fields ask different questions and perform different tests. However, they use the same core approach to find answers that are logical and supported by evidence.
What is taxonomy? Someone plss hel
Answers
the middle men get – times more money than he catch fishes
Answers
Answer:
the middle men half of times more money than he catch fishes
Explanation:
1. what is the relationship between intensity and oxygen consumption? is it linear, curvilinear, u- shaped, no relationship? explain the graph and its importance (2 pts).
Answers
The relationship between intensity and oxygen consumption is curvilinear.
As exercise intensity increases, oxygen consumption initially increases in a linear fashion.
However, as the intensity continues to increase, the rate of oxygen consumption eventually plateaus and may even decrease if the intensity becomes too high.
The graph of this relationship would show an initial steep increase in oxygen consumption as exercise intensity increases, followed by a leveling off and possible decrease in oxygen consumption at very high intensities.
This graph is important because it helps to determine the optimal exercise intensity for achieving specific fitness goals, such as improving cardiovascular endurance or burning calories.
By understanding this relationship, individuals can tailor their exercise routines to meet their specific needs and goals.
For example, someone looking to improve their cardiovascular endurance might focus on exercising at an intensity that falls in the linear portion of the curve, while someone looking to burn calories might focus on exercising at an intensity that falls in the steeper portion of the curve.
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Give one similarity between the cell theory and the theory of spontaneous generation.
Answers
Explain how sex-linked, codominant and incomplete dominant traits are passed on to offspring.
Answers
Sex-linked traits are genes carried on the sex chromosomes, the X and the Y chromosome. Only males carry the Y chromosome, and therefore all genes on the Y chromosome are passed down to the son. Women carry two X chromosomes; therefore, sex-linked traits can be passed on from both the mother and the father.
Examples of sex-linked traits include red-green colour blindness and haemophilia.
In codominance, both alleles are expressed in the phenotype of heterozygous offspring. The human ABO blood group is an example of codominance.
There are three alleles for the ABO gene: IA, IB, and I (i is recessive to both IA and IB). If an individual is heterozygous for both the IA and IB alleles, they will express both A and B antigens on their red blood cells. If they are homozygous for either IA or IB, they will express only one antigen on their red blood cells.
Incomplete dominance occurs when neither allele is dominant nor recessive, but instead, the phenotype is a blend of both. An example of incomplete dominance is the snapdragon flower, which has a red flower and a white flower. When the red flower is crossed with the white flower, the resulting offspring have pink flowers, which is a blend of red and white. The genotype for pink flowers is Rr, where R represents the red allele, and r represents the white allele.
When two pink flowers are crossed, their offspring will have a ratio of 1:2:1 of red, pink, and white flowers.
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A pension fund manager is considering three mutual funds. The first is a stock fund, the second is a long-term government and corporate bond fund, and the third is a T-bill money market fund that yields a sure rate of 5.5%. The probability distributions of the risky funds are: Expected Return Standard Deviation Stock fund (S) 15 % 32 % Bond fund (B) 9 % 23 % The correlation between the fund returns is 0.15. a. What would be the investment proportions of your portfolio if you were limited to only the stock and bond funds and the portfolio has to yield an expected return of 12%? b. Calculate the standard deviation of the portfolio which yields an expected return of 12%. (Do not round intermediate calculations. Round your answer to 2 decimal places.)
Answers
Proportion of stocks in complete portfolio is 0.5934 and Proportion of bonds in complete portfolio is 0.2453.
To determine the investment proportions of the portfolio and calculate the standard deviation, we can use the principles of portfolio theory and consider the expected returns, standard deviations, and correlation between the stock and bond funds.
a. To find the investment proportions of the portfolio, we need to use the concept of the capital market line (CML). The CML represents the optimal portfolio of risky assets that maximizes the expected return for a given level of risk.
Step 1: Calculation of standard deviation on portfolio
The equation for the CAL is
E (rc ) = rf +[E (rp) - rf / σp]σc
= 5.5 + 0.3154 σc
Setting E(rc) equal to 12%
12 = 5.5 + 0.3154 σc
σc = 20.61%
Setting E(rc) equal to 12% yields a standard deviation of: 20.61%
Step 2: Calculation of mean of complete portfolio as a function of proportion invested in risky portfolio
E(rc) = (l - y)rf + yE(rp) = rf + y[E(rp) - rf] = 5.5 + y(13.25 - 5.5)
Setting E(rc) = 12% ⇒ y = 0.8387 (83.87% in the risky portfolio)
1 - y = 0.1613 (16.13% in T-bills)
From the composition of the optimal risky portfolio:
Proportion of stocks in complete portfolio = 0.8387 x 0.7075 = 0.5934
Proportion of bonds in complete portfolio = 0.8387 x 0.2925 = 0.2453
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Your friend tells you that sunlight breaks rocks into small pieces. using what you learned from the video, revise this statement, explaining how the process is more complicated than that
Answers
The process is more complicated than that because the cycle of expansion and contraction brings about the weathering process.
What is Weathering?This is the process in which rocks are broken down into smaller fragments or particles.
Sunlight heats the rocks and causes expansion which cools down during the night. This cycle of expansion and contraction is what disintegrate the rocks into smaller pieces.
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Which property do solutions with low pH values have?
Answers
Answer:
b) Tastes sour
Explanation:
How two different prayer aids mightbe used by cathlics during prayer
Answers
Catholics use a variety of prayer aids to help them focus and deepen their prayer experiences. Two different prayer aids that might be used by Catholics during prayer are the Rosary and the Prayer Book.
The Rosary is a traditional Catholic prayer aid that consists of a string of beads arranged in a particular pattern. Catholics use the beads to guide them through a series of prayers, including the Hail Mary, the Our Father, and the Glory Be, while reflecting on specific events in the life of Jesus Christ.
The Prayer Book is another prayer aid that contains a collection of Catholic prayers, including novenas, litanies, and devotions to various saints. Catholics might use a Prayer Book to find inspiration for their own prayers or to follow a structured prayer practice.
Both the Rosary and the Prayer Book can be used by Catholics to help them focus their minds, deepen their faith, and create a sense of spiritual connection during prayer.
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when a large number of species or higher taxonomic group disappear during a relatively short time span, a _____ extinction has occurred.
Answers
A mass extinction occurs when a significant number of species or higher taxonomic groups vanish within a relatively short period of time.
What is taxonomic ?The study of classifying living things is known as taxonomy. The identification, classification, and nomenclature of various species of organisms are addressed by this area of biology. Based on shared traits and evolutionary links, taxonomy classifies organisms in a hierarchical manner.
The aim of taxonomy is to arrange the enormous variety of living things into a sensible and simple system. In addition to helping to categorise and classify newly discovered species, taxonomy also aids in the identification of unidentified species.
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Write a scientific explanation as to “What is the main cause of global warming?"
Answers
Answer:
It is the aspect of climate change
Explanation:
Referring to the long term rise of planet's temperatures,it is caused by increased concentrations of greenhouse gases in atmosphere
Answer:
Excess C02 in the atmosphere caused by coal burning, exhaust, factory smokestacks, and deforestation.
Explanation: i am sorry if this is wrong
Identify the type of growth response that each plant demonstrates.
Answers
Answer:
The first plant demonstrate stunt growth. The second one demonstrate rapid growth
Explanation:
The first one lacks proper care and is not exposed to sunlight. The second one is the opposite of the first one
Define the term earthquake
Answers
6. Compare how people are affected by an Air Quality Index of 140 with how they would be
affected by an Air Quality Index of 170. (2 points)
Answers
People are likely to experience severe health effects at AQI 170 as compared to 140.
How does air quality affect humans?Air Quality Index of 140 is considered unhealthy for sensitive groups such as children, elderly and individuals with lung diseases. AQI of 170 is considered unhealthy for everyone. AQI of 170 is unhealthy for everyone causing potential respiratory issues and discomfort.
Exposure to air pollution can affect health. When we breathe in air pollutants, they enter our bloodstream and contribute to coughing or itchy eyes and cause many breathing and lung diseases, leading to hospitalizations, cancer or also premature death.
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Which human action has had the most positive ecological impact on the environment
Answers
The human action with the most positive ecological impact on the environment is the implementation of conservation and reforestation efforts. These actions help restore natural habitats, increase biodiversity, and reduce carbon dioxide levels in the atmosphere. By preserving and restoring ecosystems, we are protecting the environment and promoting the overall health of our planet.
Conservation efforts can include protecting natural habitats, creating and maintaining protected areas, and reducing or eliminating harmful human activities like overfishing or illegal wildlife trade. These actions help to preserve and restore natural ecosystems, which in turn supports biodiversity and the overall health of the environment.
Reforestation is another important action that can have a positive ecological impact. It involves planting trees in areas where they have been removed, which can help to restore forests and increase carbon sequestration. Trees absorb carbon dioxide from the atmosphere during photosynthesis, helping to mitigate the effects of climate change.
It is important to note that the effectiveness of these actions depends on the specific context and may vary. For example, reforestation may not be the most effective solution in areas where other land uses may be more appropriate. Additionally, conservation and reforestation efforts must be coupled with other actions to address the root causes of environmental degradation, such as reducing greenhouse gas emissions and improving sustainable practices in agriculture and industry.
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the nurse understands that movement of otoliths may result in which of the following?
Answers
The nurse understands that movement of otoliths may result in vertigo and nystagmus (Option A).
What are otoliths?Otoliths are small particles in the inner ear that help with balance and spatial orientation. Movement of the otoliths or free-floаting debris cаuses the vestibulаr system to become more sensitive, such thаt аny movement of the heаd in the plаne pаrаllel to the posterior duct. When they move abnormally, they can cause symptoms like vertigo (a spinning sensation) and nystagmus (involuntary eye movements). However, movement of otoliths is not directly related to severe otalgia (ear pain), permanent hearing loss, or the inability to hear high-pitched frequencies, as these issues are usually associated with other parts of the ear or different conditions.
Your question is incomplete, but most probably your options were
A. vertigo and nystagmus.
B. severe otalgia.
C. permanent hearing loss.
D .inability to hear high-pitched frequencies.
Thus, the correct option is A.
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PLEASE PLEASE PLEASE HELP ME WITH THIS!! ONCE I FIGURE OUT HOW I'LL MARK BRAINLIEST (or however you spell it)!!
Answers
Answer:
1st segment: 3rd answer choice
2nd segment: 1st answer choice
3rd segment: 4th answer choice
4th segment: 2nd answer choice
5th segment: 5th answer choice
Having straight ears (E) is dominant over droopy ears (e). A parent with straight ears is crossed with a parent with droopy ears. The Punnett square will show the possible genotypes of the offspring. What is the genotype of each square?
A: EE, Ee, ee
B: EE, Ee, ee
C: EE, Ee, ee
D: EE, Ee, ee
Answers
Answer:
Ee Ee ee ee 50/50 on having either droopy ears or straight
Explanation:
The genotype of square A is Ee, square B is ee, square C is Ee, and square D is ee.
What are genotypes?Genotypes are the genetic makeup or the complete set of genes that an individual organism possesses. They are responsible for determining an organism's physical and behavioral traits.
The genotype of an organism is encoded in its DNA, which consists of long sequences of nucleotides that code for specific proteins and other functional molecules. These nucleotide sequences are organized into genes, which are located on chromosomes in the nucleus of the cell.
Genotypes can be inherited from parents and passed down to offspring through sexual reproduction. However, mutations and genetic variations can also occur spontaneously, leading to changes in an individual's genotype.
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