Explanation:
An enzyme inhibitor is a molecule that binds to an enzyme and decreases its activity. ... Not all molecules that bind to enzymes are inhibitors; enzyme activators bind to enzymes and increase their enzymatic activity, while enzyme substrates bind and are converted to products in the normal catalytic cycle of the enzyme.
Arginine utilizing enzymes in macrophages showed different specificities for various arginine analogues and derivatives as substrates and inhibitors. Isolated arginase was strongly inhibited by L-canavanine(Can) and L-ornithine(Orn) but only slightly by L-homoarginine(Hom) and L-argininamide(ArgNH2). These effects were not or only weakly observed when released urea was measured in long term cell cultures. On the other hand, both L-canavanine and L-argininamide were substrates for arginase in long-term cultures. The known inhibitors of NO synthase were ineffective. The mechanisms of inhibition were different for L-canavanine and L-ornithine, but clear mechanisms could not be identified). NO synthase was studied only in long term cell cultures without purification. Certain N-guanidino (NG)-substituted arginine derivatives caused a marked inhibition while inhibitors of arginase had only slight or no effect. L-homoarginine was also found to be the substrate of NO synthase. The comparison of these effects of arginine analogues and derivatives made possible a computer-aided approximation for the fitting of active centers of these enzymes to their substrates.
fire converts energy into what
What is the process of sea floor spreading?
Answer:
(See Below)
Explanation:
[1] Magma comes out of the rift valley.
[2] Magma cools to rock and hardens.
[3] Rock is pushed away as new rock is formed at MOR (Mid Ocean Ridges)
[4] Oceanic crust and continental crust meet at the trench.
[5] Oceanic crust bends down under the continental crust.
[6] Gravity pulls rock towards mantle.
[7] Rock melts to mantle.
Explanation:
Sea floor spreading is a process that occurs at mid ocean ridges,where new oceanic crust is formed through volcanic activity and then gradually moves away from the reach.
skin is an organ ? I’m confused can someone explain this?????
Answer:skin is the biggest organ on your body :)
Explanation:
Answer:
Yes
Explanation:
It's an organ
because we have the following
[tex]cell\rightarrow\:tissues\rightarrow\:organs[/tex]
it's an organ because it's a "set" of tissues
the epidermis
the dermis
ect.
NEED HELP DUE TODAY PLZ HELP ME!!!!
I will give brainly!!!!
NOTE: Cells are NOT to scale.
Which of the following statements is true regarding Cells A and B?
Choose 1 answer:
(Choice A)
A
Both Cell A and Cell B are eukaryotic because they have ribosomes.
(Choice B)
B
Cell A is eukaryotic because it has DNA.
(Choice C)
C
Cell B is eukaryotic because it has a nucleus.
(Choice D)
D
Neither Cell A and Cell B are eukaryotic because they have flagella.
cell b is eukaryotic because it has a nucleus
what percentage decrease in fossil fuel usage is required to achieve this goal?
Answer:
Further decrease fossil fuel consumption to 80 percent below current levels by 2050
is algae plant- like, fungus- like, or animal- like
Answer:
plant-like
Explanation:
Even though It's a living thing, it contains structures within their cells that resemble plant cell structure. For example, it has chlorophyll.
A collection of cells with similar function forms -
Answer:
Tissue is a collection of cells with similar function forms.
Explanation:
two effects of climate change on the environment
Answer:
various factors of climate change can effect the environment
Explanation:
1. extreme heat - droughts, bushfires
2. flooding effects infrastructure
3. rising in sea levels
How is DNA expression regulated in individual cells?
Answer:
Gene regulation can occur at any point during gene expression, but most commonly occurs at the level of transcription (when the information in a gene's DNA is transferred to mRNA). Signals from the environment or from other cells activate proteins called transcription factors.
Explanation:
Gene regulation can take place at any stage of gene expression, although it often happens during transcription when the data from a gene's DNA is converted to mRNA.
What is gene regulation?Proteins known as transcription factors are activated by signals from the environment or from other cells.
Limiting the amount of mRNA that is generated from a certain gene regulates transcription.
Eukaryotic gene expression is regulated by the nucleus-based mechanisms of transcription and RNA processing and the cytoplasm-based activities of protein translation.
Therefore, the translation of mRNA into proteins is regulated by post-transcriptional processes, which constitute the second level of regulation.
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Scientists use tissue cultures to study possible medicines that can be used to treat cancer patients. What is one benefit of this procedure?
Patients do not receive harmful or ineffective medication.
The cultured cells are not in their normal environment.
Doctors know how to treat all types of cancer.
One tissue culture can be used for all cancer patients.
Answer:
b. Patients do not receive harmful or ineffective medication.
Explanation:
on edge
Tissue culture is used to treat cancer patients, as this procedure does not use any harmful or ineffective medication on the patients unlike the other treatment options. Thus, the correct option is A.
What is Tissue Culture?
Tissue culture is the process of growth of tissues or cells in an artificial medium that is separate from the parent organism. This technique is also known as micropropagation method. It is typically facilitated via the use of a liquid, a semi-solid, or a solid growth medium, such as the broth or agar medium.
Tissue culture is used widely in science for the propagation of plants, in the study of medicines such as those related to cancer. Tissue culture can be used as a treatment option in cancer as this technique does not show any harmful or ineffective medication. The cultured tissues of stem cells can be used for replacement of infected cells or body parts.
Therefore, the correct option is A.
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Which statement describes a newton? It exists only for objects on Earth. It measures the mass of an object. It reflects the amount of force an object exerts. It states that every object attracts another object.
Answer:
It reflects the amount of force an object exerts
Explanation:
A newton is a unit of force that will accelerate one kilogram of mass one meter per second squared.
Answer:
its C
Explanation:
Can someone please help me?
The similar shapes of fast swimming marine predators are an example of:__________
Answer: convergent evolution
Explanation:
The similar shapes of fast swimming marine predators are an example of convergent evolution.
Convergent evolution shows how different species possess identical structures even though they evolve separately. Convergent evolution typically takes place with the organisms that are not really related.
An example of convergent evolution is the similarity that can be noticed in the wings or the flights of bats, birds, insects, etc
I am a multicellular organism. I am heterotrophic and rely on oxygen to metabolize my food. I belong to Kingdom
Answer:
Kingdom Animalia
Explanation:
Kingdom Animalia is one of the seven kingdoms living organisms are classified into. The Kingdom contains organisms called ANIMALS. They are eukaryotic i.e. possess a membrane-bound nucleus. Animals are heterotrophic i.e. they rely on other organisms for their source of energy (food).
In order to break down this food via metabolism, animals need oxygen to do so. This process is called respiration, and it yields energy in form of ATP, which is used by their cells to carry out cellular functions. Therefore, a heterotrophic multicellular organism that relies on oxygen to metabolize its food belongs to KINGDOM ANIMALIA
What are four types of organic compounds found in all living things?
Answer:
Most organic compounds making up our cells and body belong to one of four classes:
carbohydrateslipidsproteinsnucleic acidsHope this helps :)
Answer:
carbohydrates, lipids, proteins, and nucleic acids
Explanation:
how many teeth do I have
Answer:
an adult has 32
Explanation:
give two roles of nucleus in the cell
Explanation:
The nucleus controls and regulates the activities of the cell (e.g., growth and metabolism) and carries the genes, structures that contain the hereditary information. Nucleoli are small bodies often seen within the nucleus.
is it ok if u could try and help me with my last question if so thx
due date today 1:00 pam
Answer:
The amount of light that a plant has determines how much the plant grows, plants need sunlight for photosynthesis, and photosynthesis is how they make food so if a plant has little to no sun it won't grow well.
how natural selection could lead to the trait distribution?
Imagine green and yellow bugs live in the grass. Their predator is the speckled finch. Now, the finch flies down to grab some tasty beetles, and which ones does it go for? The yellow ones. The green beetles, due to their natural grass camouflage will have a much smaller chance of being eaten than the yellow ones which stand out. While the yellow ones get eaten the green thrive and reproduce. Soon, there won't be anymore yellow bugs. They'll most likely die out or breed with the green ones to make offspring of a more green color.
5 Devise Imagine that one tree outside your
school looks unhealthy, although all the other
trees seem healthy and strong. Describe how
you could apply scientific thinking to the
situation.
Can you help me with the question listed in the pictures below? Please and thank you. Will mark BRAINLIEST!!!
Answer:
If you truly enjoy something, it won't feel like work.
Explanation:
if your job is something you just have to do and you are not happy it will
feel like work, like chores. No one likes to wash dishes so it feels like work.
Which of these units are most commonly found/used in science?
feet/inches
pounds/ounces
yards/miles
meters/grams
Answer:
Meters/grams are the most common.
Explanation:
Grams are very exact and meters are also common to use.
What is the purpose of a cell?
Answer:
They provide structure for the body
Explanation:
they take in nutrients from food, convert those nutrients into energy, and carry out specialized functions. Cells also contain the body's hereditary material and can make copies of themselves. Cells have many parts, each with a different function.
Drag each tile to the correct location. The tiles can be used more than once. Megan observes four cells under a microscope and makes sketches of them as shown. Identify whether the cells are prokaryotic or eukaryotic.
Answer:
The correct image with related to question is attached please do check.
Explanation:
Genetic material or Nuclear material can be found in the cell either in "nucleus" a membrane bound organelles or found in the cytoplasm. This is the major difference between prokaryotic and eukaryotic cell.
In prokaryotic cell the genetic material that is DNA, and RNA is not present in the nucleus as there is no body like nucleus for instance figure 2 and 3 whereas in eukaryotic organisms it is present in a nucleus like in figure 1 and 4.
Answer:
1. eukaryotic cell
2. prokaryotic cell
3. prokaryotic cell
4. eukaryotic cell
Explanation:
I got it right on plato.
During an investigation, Sam observes the number of hummingbirds that come to his large bird feeder at different times of day. He fills the feeder to the top the first day and counts the number of birds at 6 a.m., noon, and 6 p.m. over ten days. What are the independent and dependent variables in Sam’s investigation?
Answer:
The independent variable in this question is the time of day the feeders are observed and the dependent variable is the number of humming birds.
Explanation:
The number of humming birds DEPENDS on the time of day the feeders are filled
Hope this helps :)
A student investigates the effects of fertilizer on corn plants by performing the following steps: 1. Plant groups of corn plants in the same type and amount of soil in full sunlight. 2. Add the same amount of different brands of fertilizer to each group. 3. Water the plants for 5 minutes each day. 4. Measure the heights of the plants each day. What is the independent variable in this investigation?
I think the answer would either be the different brands of fertilizer
how can an error in dna get us sick?
Pleaseeee explain!
Answer:
Errors during Replication. DNA replication is a highly accurate process, but mistakes can occasionally occur as when a DNA polymerase inserts a wrong base. Uncorrected mistakes may sometimes lead to serious consequences, such as cancer. Mutations: In this interactive, you can “edit” a DNA strand and cause a mutation.
HURRY PLS HELP ASAP
Which substances compose the backbone of DNA?
sugars and lipids
phosphates and amino acids
sugars and phosphates
lipids and proteins
Answer:
sugars and phosphate compose backbone of dna
Answer:
sugars and phosphates
Explanation:
c
The diagram below shows hydrogen bonds between water molecules.
What describes each hydrogen bond?
1. An attraction between neutral ends of two molecules.
2. An attraction between the positive end of one molecule and the negative end of another molecule.
3. An attraction between positive ends of two molecules.
4. An attraction between negative ends of two molecules.
hydrogen bonds between water molecules. An attraction between the positive end of one molecule and the negative end of another molecule describes each hydrogen bond.
What are the characteristics of water ?Water is amphoteric in nature because it serve as both acid and a base, highly viscous in nature due to the presence of a force of attraction between molecules.
Water is participate in Redox reaction as it help in release of dihydrogen molecules easily, the dielectric constant is also high, form the connections with other chemical compounds known as hydrates.
The temperature below 4 degrees Celsius the water ordinarily behaves, when it is cooled further, its unusual properties of water molecule are being observed.
During cooled condition, the density of water can also slowly increases and further cooled down leads to decrease in the density of water and the expansion of matter called as the anomalous property of water.
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How does a marathon runner use oxygen and produce carbon dioxide during the marathon
Explanation:
Alright, a marathon runner is running, what do you do when you run, you breathe in (usually heavy too) so when the runner is breathing in, they take in oxygen (air), and breathe out carbon dioxide (used air.)