Answer:
The factor that is improved by adding pocket gophers to an abandoned pasture is:
B. Colonization is limited by poor dispersing plant species.
Explanation:
In ecological management, colonization describes the action by a plant or animal to establish itself in an area. When pocket gophers are added to an abandoned pasture, the area is repopulated by these rodents. By their nature, pocket gophers move some quantity of soil annually, thereby aerating the soil. Moreover, they build tunnels, which they later abandon for other species as natural habitat. They also leave some waste products to fertilize the soil, making the ecosystem alive again.
Researchers isolated a yeast phosphofructokinase mutant in which a serine at the fructose-2,6-bisphosphate (F26BP) binding site was replaced with an aspartate residue. The amino acid substitution completely abolished the binding of F26BP to PFK. There was a dramatic decline in glucose consumption and ethanol production in the mutant compared to control yeast.
Required:
a. Propose a hypothesis that explains why the mutant PFK cannot bind F26BP.
b. What does the decline of glucose consumption and ethanol production in the yeast reveal about the role of F26BP in glycolysis?
Answer:
Explanation:
a.
Phosphofructokinase-1, also known as the glycolysis stimulator, is among the most important glycolysis regulatory enzymes. It's an apoptotic enzyme with effectors (activators/inhibitors) that control its activity. Fructose 6-phosphate and ATP are converted to fructose 1,6-bisphosphate and ADP by PFK-1.
Suppose the serine in PFK's active site is substituted with aspartic acid, the enzyme's active site would be devoid of phosphorylation sites. The enzyme PFK contributes to the transferase family since it has kinase activity. It serves as an acceptor by transferring phosphorus groups to an alcohol group (serine).
Insulin stimulates protein phosphatase, which eliminates the phosphate group from the serine residue, stabilizing the kinase role and promoting F26BP formation. The phosphorylation reaction will not take place provided the serine is substituted with aspartic acid. Therefore, the PFK's kinase activity will be lost. Similarly, F26BP will not form PFK, and it will not be aborted in the future.
b.
Their decline reveals that:
F26BP increases the overall net flow of glucose by glycolysis modulates PFK production and induces Fructose 1,6 bis phosphatase, which also catalyzes the glycolysis reverse process.
Fructose-2,6-bisphosphate transcriptionally activates the rate-limiting process of glycolysis catalyzed by PFK 1.
Increased levels of Fru-2,6-P2 located in the liver raise PFK1's propensity and resistance for fructose 6 phosphate while lowering its affinity for its' inhibitors ATP and citrate.
Fructose 2,6-bisphosphate supersedes the inhibition of ATP and promotes greater sensitivity of the eukaryotes to be regulated by hormones (glucagon and insulin).
Crossed extensor reflex is a
Answer:
The crossed extensor reflex is a type of motor response that occurs to tactile stimulation of a lower limb. This, like other reflexes, is an indication of the proper integration and development of the central nervous system.
Explanation:
Stimulation on one side of the body can produce, in addition to the ipsilateral response. The crossed extensor reflex is a type of motor response, reciprocal innervation is involved: the flexor muscles of the stimulated limb contract at the same time that the extensors of said limb are inhibited. Coupled with flexion of the stimulated limb, the reflex produces an opposite effect in the contralateral limb: the extensor muscles are activated and the flexors are inhibited, this cross-extension reflex increases postural support during withdrawal of the painful stimulus.
temperature usually increase when water condenses. which behavior of water is most directly responsible for this phenomenon?
Answer:
the release of heat by the formation of hydrogen bonds.
Explanation:
Temperature can be defined as a measure of the degree of coldness or hotness of a physical object. It is measured with a thermometer and its units are Celsius (°C), Kelvin (K) and Fahrenheit (°F).
Condensation can be defined as a process which typically involves the change in the physical state of matter from the gaseous phase into a liquid phase i.e water changing from gas (vapor in the air) into a liquid form.
Temperature usually increase when water condenses. This phenomenon is as a result of the release of heat (exothermic reaction) by the formation of hydrogen bonds in water i.e hydrogen-hydrogen bond in water molecules formed by the chemical elements; oxygen and hydrogen.
What are the causes of soil compaction? (Site 1)
Answer:
Internal factors include particle-size distribution, organic matter content, mineralogy and water content of the soil. Externally applied forces are generally mechanically applied forces, the primary source of these being vehicular traffic
Explanation:
why is the air temperature in the rain forest of Peru so warm?
Answer:
Because Peru is located between the equator and Tropic of Capricorn. Since it is in the tropics, one might expect Peru to be a country of extreme heat and heavy vegetation.
Explanation:
A fireman feels a door and it is hot from the fire on the other side due to blank
Answer:
A fireman feels a door and it is hot from the fire on the other side due to conduction. Explanation: One side of the door is touching the other, and it transfers heat. 16. The cause of weather systems on earth is convection and radiation.
Explanation:
Correct me if I am wrong?
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The fossil record indicates that in some cases reasonably well-defined species appear suddenly and remain unchanged for a long time before they become extinct. This phenomenon is referred to as
Answer:
The correct answer is - punctuated equilibrium.
Explanation:
The phenomena represent punctuated equilibrium, according to which the new well-defined species appear suddenly and quickly. These species remain unchanged for a long time as they occur because of mutations in genes.
This phenomenon suggests that once it made in the fossil record the population becomes stable for a long time until they become extinct and have to adapt to the changes take place to survive.
Which type of electromagnetic wave is the most similar in wavelength to visible light?
A. Radio Waves
B. Gamma radiation
C. Ultraviolet light (UV radiation)
D. Sound waves
Answer:
uv
Explanation:
im pretty sure
38. In asexual reproduction, a single
parent passes copies of all of its
genes to each of its offspring.
When is asexual reproduction in
plants advantageous?
F. when the environment is
unstable
G. when there is little competi-
tion for resources
H. when plants are well adapted
to the environment
I. when there are multiple dis-
ease agents in the environment
Asexual reproduction in plants is advantageous when plants are well adapted to the environment that is present in Option H, as plants that are well adapted to their environment are more likely to produce offspring that can thrive in that environment as well.
What is asexual reproduction?Asexual reproduction allows for the efficient production of genetically identical offspring without the need for finding a mate or investing energy in gamete production, and this can be particularly advantageous in stable environments where there is little change and plants can thrive without the need for genetic diversity. In plants, asexual reproduction can occur through various means, including vegetative reproduction, where new plants are produced from parts of the parent plant such as stems, leaves, or roots.
Hence, asexual reproduction in plants is advantageous when plants are well adapted to the environment that is present in Option H.
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RNA is a molecule with characteristics and a role similar to DNA. Why is RNA necessary for DNA to fulfill its function?
a. DNA does not contain all the genetic material necessary for a living organism
b. DNA cannot leave the cell’s nucleus, so RNA is needed to bring the code to protein-producing organelle.
c. RNA contains the instructions for how an organism functions and DNA contains the instructions for creating the physical structures of an organism.
d. RNA acts as a checkpoint to ensure that DNA’s code does not contain errors.
Answer:
Transcription and translation are the means by which cells read out, or express, the genetic instructions in their genes. Because many identical RNA copies can be made from the same gene, and each RNA molecule can direct the synthesis of many identical protein molecules, cells can synthesize a large amount of protein rapidly when necessary. But each gene can also be transcribed and translated with a different efficiency, allowing the cell to make vast quantities of some proteins and tiny quantities of others (Figure 6-3). Moreover, as we see in the next chapter, a cell can change (or regulate) the expression of each of its genes according to the needs of the moment—most obviously by controlling the production of its RNA.
Explanation:
RNA is a molecule with characteristics and a role similar to DNA. RNA necessary for DNA to fulfill its function because RNA is needed to bring the code to protein-producing organelle.
What is tRNA ?t RNA is the transfer RNA which brings up messages to code for a particular type of protein via the message carried by the m RNA after which the amino acid chains start gets forming.
A triplet codon is produced where three of the nucleotides bind together to form a particular type of a protein.
Rna has a machinery for the messages transferred as it will channel information to tRNA where on the ribosomal unit it will start synthesising a particular kind of amino acid.
RNA contains the instructions for how an organism functions and DNA contains the instructions for creating the physical structures of an organism.
Therefore, RNA is important as well.
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How do you think Earth manages to have a continuous supply of oxygen, carbon dioxide, and nitrogen when they are constantly used by living things?
Answer:
It's all a part of a very complex cycle… one thing feeds into another making an almost infinite loop.
The problem with the existence of humans is that we are interrupting the cycle by pumping out carbon dioxide at unsustainable rates. Nitrogen based fertilizers are causing massive algal blooms causing fish die offs on unprecedented scales… but I digress.
Long story short: the Earth is a biosphere with a beautiful balance that it seems humans seem dead set (pun intended) to throw out of harmony into chaotic turmoil.
Explanation:
because yes
Earth manages to have a continuous supply of oxygen, carbon dioxide, and nitrogen when they exist constantly utilized by living things because it exists as part of a complex cycle named the nutrient cycle.
What is meant by nutrient cycle?The soil's minerals, decomposing leaves and wood, water from snowfall and rain, as well as species that live above and below ground (the soil is alive! ), all contribute to the nutrient cycle. Trees and other plants take up nutrients from the soil, both mineral and non-mineral, through their roots.These nutrients are kept in reserve by plants in their leaves, flowers, and other parts. When animals eat plants, the nutrients either go back to the ground or are delivered to the animals.Arthropods, earthworms, fungi, and bacteria in the soil break down dead plants and animals. The decaying matter is ground up and combined with the soil by arthropods and earthworms.Some of the more complicated substances can be disassembled and divided into smaller parts by fungi.To learn more about the nutrient cycle, refer to:
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4) What factors influence the circulation of the Earth's atmosphere,
thereby producing our weather?
The uneven heating of the earth's surface is one of the main variables affecting the circulation of the atmosphere globally along with seasonal variations in precipitation and temperature and Earth turning on its axis.
What is weather?The state of the atmosphere is referred to as the weather, and can be described in a number of different ways, including the degree to which it is hot or cold, wet or dry, quiet or stormy, clear or cloudy. The troposphere, the lowest layer of the Earth's atmosphere, is where the majority of meteorological events take place. The stratosphere is the next layer up from the troposphere. The term "weather" is used to describe the temperature, precipitation, and other characteristics of the atmosphere on a day-to-day basis.
Variations in air pressure, temperature, and moisture from one location to another are the primary contributors to a day's weather. These disparities can be attributed to the fact that the angle at which the Sun is positioned at any given location varies with latitude. The vast temperature difference between the polar and tropical air masses is what gives rise to the biggest scale atmospheric circulations.
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Drinking too much water during exercise can cause a condition in which the concentration of sodium in the blood is lower than normal. What immediate response what are the blood cells have in this condition?
Explanation:
People may also drink excessive water because of a psychiatric disorder called psychogenic polydipsia. The result is too much water and not enough sodium. Thus, overhydration generally results in low sodium levels in the blood (hyponatremia),which can be dangerous.
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If a color-blind female wants to have children with a normal male, what is the probability one of their sons could be color blind? (Only the sons should be factored into this calculation...) One of their daughters color blind? One of their daughters a carrier? In addition, determine the genotypes of the two parents.
Answer:
Mother´s genotype: X⁻ X⁻ Father´s genotype: X⁺ Y Son´s genotype: X⁻ YDaughter´s genotype: X⁺X⁻The probability of having a color-blind son, X⁺Y, is 2/2 = 100% The probability of having a color-blind daughter, X⁻X⁻, is 0% The probability of having a carrier daughter, X⁺X⁻, is 2/2 = 100%Explanation:
Due to technical problems, you will find the complete explanation in the attached files
Help me on this please
Answer:
a is the answer the the following question
the picture shows a tropical rain forest with a large tree canopy that lets through very little sunlight. Which of the following is a form of life that survives well in this environment?
A. fungi that enjoy the dark forest floor and help to get rid of animal and plant waste.
B. mammals that need moist solid of the forest floor in which to lay their eggs.
C. plants that use moonlight to make food and energy for growth.
D. insects that require no water because rainfall is blocked by the canopy
Answer: AAAAA
Explanation:
Answer: A!
Explanation:
10 Many organelles in a cell are bound by membranes. Which organelles consist of
membranous tubes and sacs and serve as part of the cell's packaging and transport
system?
F. mitochondria and lysosomes
G. mitochondria and chloroplasts
H. ribosomes and endoplasmic reticulum
I. Golgi apparatus and endoplasmic reticulum
Answer:
Golgi Apparatus and Enoplasmic Reticulum
Explanation:
Both organelles are membranous organelles that assist in the function of packaging and transport. Endoplasmic reticulum is the site for protein synthesis while the Golgi Apparatus serves as the delivery system.
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Cells convert food into usable energy in a structure known as the powerhouse of the cell, or the ________. vacuole vacuole chloroplast chloroplast nucleus nucleus mitochondria
Answer:
Mitochondria are the "powerhouses" of the cell, breaking down fuel molecules and capturing energy in cellular respiration. Chloroplasts are found in plants and algae. They're responsible for capturing light energy to make sugars in photosynthesis
What does it mean to "induce" your cells?
Answer:
Induction, in embryology, process by which the presence of one tissue influences the development of others.
HELP ASAP I WILL GIVE BRAINLIST! Which formula can be used to calculate the molar mass of ammonia (NH3)? (5 points)
molar mass of N + molar mass of H
3 × molar mass of N + molar mass of H
molar mass of N + 3 × molar mass of H
3 × molar mass of N + 3 × molar mass of H
Answer:
c. molar mass of N + 3 × molar mass of H
Explanation:
Molar mass of NH3
M(NH3)= 14+3(1)
17gmol-1
Answer:
c
Explanation:
i got it right
Which best summarizes the article? achieve 3000 New Life at. Yellowstone
A. New life has appeared in Yellowstone 20 years after wildfires scorched the park
B. Wildfires burned 1375 square miles (4 856 square kilometers) in and around Yellowstone Park in 1988
C. Oficials in Yellowstone re examined a policy that allowed wildfires in the park
D. Drought once dried out trees in Yellowstone and helped fires spread out of control
can someone help with this question its due in 10 minutes
Answer:
The waves have eroded the sand and then deposited some of it in the water.
 Pressure increases with depth toward the center of the Earth. In which layer would you expect the pressure to be the greatest?
Answer:
The pressure would be the greatest in the Outer core.
Answer:
hi
Explanation:
the presure would be gresest
what is Classification?
Take 50 points
Answer:Classification, in biology, the establishment of a system of categories on the basis of presumed relationships among organisms. The science of biological classification is commonly called taxonomy.
Answer:
Thanks
Explanation:
Thanks
What functions are performed by the large intestine's
normal flora?
These bacteria are important in digestion and in keeping your large intestine healthy. The good bacteria that live in your colon are called your normal flora. They help prevent bad bacteria from multiplying and causing problems.
Undersea vents called black smokers release superheated, mineral-rich water. Light does not penetrate the water, making photosynthesis impossible. However, diverse communities of organisms exist around black smokers at depths of 2100 m below the ocean surface.
Which is the most likely reason these diverse communities can exist so deep in the ocean?
Group of answer choices
Black smokers are warm like tropical land areas.
Black smokers produce sulfur that blocks light and creates a good hideaway for many organisms.
Dead organisms that serve as bacterial food sources drift down from water close to the surface.
Producer organisms use minerals in the water to make food through chemosynthesis.
Answer: Producer organisms use minerals in the water to make food through chemosynthesis.
Explanation:
The producer organisms that exist around these underwater vents are able to produce food through an alternative process to photosynthesis known as Chemosynthesis.
With Chemosynthesis, producer organisms use the minerals in the water from black smokers by converting molecules that contain carbon to organic matter by using energy they acquired from oxidizing ferrous ions and other inorganic compounds.
TRUE or FALSE
People can see all types of light.
If FALSE explain:
TRUE or FALSE
Radiowaves and Microwaves are types of light waves.
If FALSE explain:
Answer:
false.
Visible light is the light that we can see, and thus is the only light detectable by the human eye. White light is visible light, and it contains all the colors of the rainbow, from red to violet.
a portion of the light spectrum that follows red. They have longer wavelengths than visible light.
true.
Radio waves and micro waves are type of light waves but they can't be seen.
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why many are dying because of having Co.vid Vaccine??
Answer:
milllions of millions people
Honest answers please!! Which organisms' decline may reduce the curlew population? (1 point)
trees
O milkweed
O grasshoppers
O livestock
Answer:
Milkweed
Explanation:
Several species of milkweed are poisonous to range animals.
BRAINILEST PLEASE
The curlew population will be reduced by milkweed because some species of milkweed are poisonous to curlew.
What is a population?A population is the total number of a species of organisms found in a particular habitat.
The population of organisms is affected by availability of:
food water matesas well as diseasesMilkweed is a plant specie.
The curlew population will be reduced by milkweed because some species of milkweed are poisonous to curlew.
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TRUE or FALSE
Visible light has very short wavelengths.
If FALSE explain:
PLEASE HELP!!!
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