Which explains a difference between prokaryotic and eukaryotic gene reguation?
A.
Prokaryotes do not have mRNA, so they do not have processes to degrade mRNA.
B.
Prokaryotes process DNA in the nucleus, so genes do not need to be activated.
C.
Eukaryotes utilize operons, so they do not need to produce sections of mRNA.
D.
Eukaryotic gene regulation is controlled by more than one promoter and one regulator.
The statement 'eukaryotic gene regulation is controlled by more than one promoter and one regulator' explain the difference between prokaryotic and eukaryotic gene regulation (Option D).
How does eukaryotic gene regulation take place?Eukaryotic gene regulation is a complex process controlled by different types transcription factors that bind to specific nucleotide regions upstream target complementary genes called promoters, while in prokaryotes there is only one promoter.
In conclusion, one of the most important distinctions observed in transcription between prokaryotic and eukaryotic organisms is the fact that gene regulation in eukaryotes is controlled by more than one promoter and one regulator (Option D).
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How similar is this physical model to real object? Only right answer please.
The model is very similar to the internal composition of the human body.
What is seen in the image?The image shows a scale model of the human body in which some organs and tissues such as the skin, the lungs, the liver, the intestines, the brain, among others, are distinguished.
What is this model for?This model has been created so that apprentices in areas related to medicine have access to the internal structure of the human body and learn about this subject without the need to access a real human body.
On the other hand, it should be noted that there are different types of models, not only in medicine are these tools used. Also in areas such as architecture, engineering, biology, botany, chemistry, physics, among others, because the models allow us to interact with an element in a controlled way without the need to use real elements that can be risky or difficult to access.
According to the above, it can be inferred that the similarity between the model and reality is high because high standards of quality and fidelity with reality are needed so that the learner can learn the greatest amount of information from the model.
Note: This question is incomplete because there is some information missing. Here is the complete information:
Image attached.
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Negative feedback loops are positive feedback loops are
(1 point)
O dangerous; beneficial
O painful; pleasurable
O slow; fast
O inhibitory; stimulator
Negative feedback loops are slow, Positive feedback loops are fast.
Negative feedback loops- When a system's output reduces or dampens the processes that result in its output, the system produces less output. This is known as negative feedback. Negative feedback loops typically enable systems to self-stabilize (slow). A crucial regulating mechanism for maintaining the body's homeostasis is negative feedback.
Positive feedback loops- Loops with positive feedback, where changes in one direction lead to more changes in the same direction. For instance, as a substance's concentration rises, a feedback loop results in further concentration rises.
Homeostasis- All bodily systems must be in a condition of balance for the body to live and work properly.
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explain why the following statements are false. a. feedback inhibition is defined as a mechanism of down-regulating enzyme activity by the accumulation of a product earlier in the pathway. b. protein phosphorylation is another way to alter the conformation of an enzyme and serves exclusively as a mechanism to increase enzyme activity.
False. Feedback inhibition occurs when an enzyme acting early in a pathway is inhibited by the accumulation of a product late in the pathway
What is inhibition ?Inhibition is the conscious or unconscious restriction or restraint of a process or behavior, especially of urges or wants. The ability to inhibit oneself from acting on some impulses, such as the desire to hit someone in a fit of rage, and to delay the satisfaction of pleasurable activities allows one to perform vital social functions. When two desires are perceived that are in conflict, conscious suppression often occurs in daily life (e.g., the desire to eat a rich dessert versus the desire to lose weight).
According to psychoanalytic theory, inhibition serves as a mediator between the id and the superego, or conscience, and is largely unconscious (primitive desires). The socially imposed inhibitions known as taboos, such as those prohibiting incest or murder, are elevated to the level of moral prohibition.
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The prefix that is added to the word autotroph to denote organisms which can use inorganic compounds in the environment to fix carbon dioxide with hydrogen atoms to make sugar is?.
The prefix that is added to the word autotroph to denote organisms which can use inorganic compounds in the environment to fix carbon dioxide with hydrogen atoms to make sugar is 'litho'.
We describe autotrophs as organisms that have the ability to form their own nutrition. The addition of the prefix 'litho' to the word autotroph forms the lithoautotrophs.
Lithoautotrophs are a specific type of autotroph that can derive their energy by using inorganic substances. As lithoautotrophs use substances like carbon dioxide or minerals to derive energy, they fix carbon dioxide in the environment and replace it with hydrogen. The lithotrophs can either derive energy from light or they can derive energy from chemicals. The sugar produced by lithoautotrophs is then used for carrying out other functions.
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The membrane that lines the thoracic cavity walls is the __________.parietal pleura visceral pleura parietal peritoneum parietal pericardium
The membrane that lines the thoracic cavity walls is known as the parietal pleura, which is a serious complex membranous structure that originates a sac known as membrane pleural sac (Option 1).
What is the parietal pleura?The parietal pleura is a membranous structure found in the thoracic wall which is known to separate the pleural cavity structure of the mediastinum.
In conclusion, The membrane that lines the thoracic cavity walls is known as the parietal pleura, which is a serious complex membranous structure that originates a sac known as membrane pleural sac (Option 1).
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What is the mass of a rock that has a density of 3.52 g/cm^3 and when put in a graduated cylinder with 50mL of water makes the level rise to 62mL.
SHOW ALL YOUR WORK and UNITS ON YOUR PAPER and answer ONLY with a number below.
Answer:
m = 42.24 grams
Explanation:
I hope this helps :)
Question 7 of 15
Which is not true of the Intertropical Convergence Zone (also known as the
doldrums)?
A. It's a high-pressure zone with rising air.
OB. It's where the trade winds collide.
OC. It is near the equator.
D. It features heavy precipitation.
SUBMIT
Answer:
A it's a high pressure zone with raising air.
Experiment 4: Mouthwash
Scientists wanted to determine the most effective mouthwash. They had three groups of volunteers. One group used 10 mL of Listerine mouthwash, one group used 10 mL of ACT mouthwash and one group used 10 mL of water. All participants ate the same foods the day of the experiment and swished the mouthwash for 30 seconds. The scientist took a swab of the inside right cheek of each participant. After 24-hours the scientist counted the number of bacterial colonies that formed on a Petri dish from the mouth swab.
What is the independent variable and dependent variable? How do you know?
The independent variable of an experiment is the variable that is changed or manipulated in a series of experiments.
On the other hand, the dependent variable is the variable or outcome that is measured to see the effectiveness of the treatment
According to this question, scientists wanted to determine the most effective mouthwash. They had three groups of volunteers.
One group used 10 mL of Listerine mouthwashOne group used 10 mL of ACT mouthwashOne group used 10 mL of waterAfter 24-hours, the scientist counted the number of bacterial colonies that formed on a Petri dish from the mouth swab.
This suggests that the independent variable is the different mouthwash used while the dependent variable is the number of bacterial colonies.
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Joan smells a very strong odor, bruce smells an odor that is harely detectable. Based on what is known about neural transmission you coule preeict thwy the action potentials will...
The odorant molecules are converted into action potentials by olfactory receptor neurons (ORNs).
In the olfactory epithelium, olfactory receptors are present. The superior nasal cavity contains a specific region of nasal mucosa that covers some of the ethmoid bone (cribiform plate). The olfactory pathway's first-order neurons are called olfactory receptor cells. They have one axon and one dendrite and are bipolar neurons. - When olfactory receptors are stimulated, nerve impulses are set off and travel up the olfactory nerves to the brain. – lubricant secretion over the eyeballs. As a result, the rate of stimulus is determined by the selected breathing rhythm, which in mouse varies from 2 to 10 Hz.
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check all that apply: how does the body protect its iron stores when iron stores are low? group of answer choices increases the absorption of iron the body doesn't have a mechanism to protect its iron stores excretes more iron in the urine stores iron in the thyroid gland recycles old red blood cells
The body can store a certain amount of extra iron in a red blood cell protein called ferritin.
Describe ferritin.The ionic strength of a given environment serves as a gauge for its ion concentration. When ionic compounds dissolve in water, ions are created. The overall concentration of electrolytes in the solution will have an influence on important factors like the dissociation constant or the solubility of different salts.
One of the most important characteristics of an ion-containing solution is its ionic strength. For clarity, the units must be provided when expressing ionic strength as either molal (mol/kg solvent) or molar (mol/L solution). Lewis and Randall introduced the concept of ionic strength by describing the activity coefficients of strong electrolytes in 1921.
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regular use of ivermectin as prophylaxis for covid-19 led up to a 92% reduction in covid-19 mortality rate in a dose-response manner: results of a prospective observational study of a strictly controlled population of 88,012 subjects
Study on use of ivermectin for Covid-19: Regular use of ivermectin for Covid-19 prophylaxis reduced Covid-19 mortality by 92% in a dose-response manner.
The aim of this study was to determine whether regular use of ivermectin affected his level of protection against COVID-19 and related outcomes, and to enhance the efficacy of ivermectin by demonstrating a dose-response relationship.
BACKGROUND:
We have previously shown that ivermectin, used as prophylaxis for coronavirus disease 2019 (COVID-19), is associated with reduced COVID-19 infection and hospitalization, and mortality.
METHOD:
An exploratory analysis of this prospective observational study included a program of ivermectin at a dose of 0.2 mg/kg/day for 2 consecutive days every 15 days for 150 days. Here is the definition of regularity:
A regular user received her 180 mg or more of ivermectin, and an irregular user received up to 60 mg of ivermectin throughout the program. After multivariate adjustment, comparisons were made between nonusers (those not using ivermectin) and regular and infrequent users. We calculated and compared the risk of COVID-19 infection and death from COVID-19 using the full city database. The COVID-19 database was used and propensity score matching (PSM) was employed for hospitalization and mortality.
RESULT:
Among COVID-19 participants, regular users were older and had higher prevalence of type 2 diabetes and hypertension than casual or non-regular users. Matching analysis after PSM included 283 subjects in each group of non-regular and regular users among regular and non-regular users, and 1,542 subjects among non-regular and non-regular users. rice field. 100% reduction in hospital admissions for regular users compared to infrequent users.
complete question, Study on use of ivermectin for Covid-19.
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Which of the following is not part of the cell theory? (4 points) Group of answer choices Every living thing is composed of cells. Cells come from pre-existing cells. Cells are the basic unit and structure of all living things. Every cell has a nucleus that contains genetic material.
The claim that each cell includes a nucleus that houses genetic material is not included in the cell theory.
THEORY OF CELLS:
A widely accepted theory that depicts life as a function of the cell is called the cell theory. Three scientists, Rudolf Virchow, Mathias Scleiden, and Theodor Schwann, developed the cell hypothesis in the 1890s.
The following three things make up the cell theory:
• All living things are built around their basic unit, the cell.
• At least one cell makes up every living creature.
• Every cell develops from an earlier cell.
Thus, the claim that is not supported by the theory of the cell is that each cell has a nucleus that houses genetic material. So, option D is the correct answer.
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Rhodobacter spheroides has the ability to swim quickly through water toward light, which is necessary for photosynthesis. such quick swimming is characteristic of __________.
In conclusion, Rhodobacter spheroides has the ability to swim quickly through the water toward the light, which is necessary for photosynthesis, and this quick swimming is characteristic of flagella structures in the cell.
What are flagella structures?Flagella structures are cytoskeleton structural parts of the cell composed of microtubules that are used by certain cell types for locomotion into the water and movement.
In conclusion, Rhodobacter spheroides has the ability to swim quickly through the water toward the light, which is necessary for photosynthesis, and this quick swimming is characteristic of flagella structures in the cell (in this case, bacteria).
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Early in the 20th century large areas of temperate forestland in the united states were cleared to make way for agricultural land, for each unit of this forest area that was cleared and replaced by farmland about how much npp was lost
6000 npp was lost for each unit of forest area that was cleared
NPP is the pace at which producers employ photosynthesis to make and store chemical energy, less the rate at which they utilise some of this stored chemical energy via aerobic respiration. NPP evaluates how quickly producers can generate the chemical energy stored in their tissue and possibly accessible to other organisms (consumers) in an ecosystem. It is also described as the difference between the energy fixed by autotrophs and their respiration, and it is typically equated to biomass increments per unit of land surface and time.
During the 1980s and 1990s, global agricultural growth carved a vast swath across tropical forests. According to Stanford researcher Holly Gibbs, more than half a million square miles of new farmland - an area approximately the size of Alaska - was developed in the developing world between 1980 and 2000, with more than 80 percent cleared out of tropical forests.
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The synthesis of sugar molecules through the process of photosynthesis requires energy absorbed from sunlight. Bearing this in mind, what kind of reaction is photosynthesis?.
The synthesis of sugar molecules through the process of photosynthesis requires energy absorbed from sunlight. Bearing this in mind, photosynthesis is an endergonic reaction.
The reactions that absorb energy to initiate are known as endergonic reactions. The absorb energy in order to produce more energy.
Plants absorb energy directly from sunlight to start the photosynthesis process. glucose is synthesized in plants during thus process. It is vital for the survival of plants.
Other than photosynthesis, metabolic reactions in living organisms' cells are also endergonic reactions.
The chemical equation of photosynthesis is :
6C02 + 6H20 → C6H1206 + 6O2
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Multicellular Organisms Quick Check
How is homeostasis achieved? (1 point)
O Cells maintain internal stability.
O Cells control involuntary movements.
O Cells secrete stomach enzymes.
O Cells control voluntary movements.
Answer: Cells maintain internal stability.
Explanation: I took the quiz so ik its the correct answer
suppose organism x is infected by organism y. in response, organism x's body temperature rises to 40°c. how will this change in temperature affect enzyme activity in both organisms?
It must decrease the enzyme activity in both of the organism X and Y.
Enzyme activity is always measured in the units which is indicate the rate of the reaction catalysed by that enzyme was expressed as the micromoles of the substrate transformed (or product formed) per minute. the Enzyme activity is the amount of the substrate to be converted by the enzyme in the moles per unit time. It is always measures the amount of the active enzyme which are present in the mixture at the given time .the Enzyme activity can be affected by the variety of the factors, such as the temperature, pH, and the concentration. the Enzymes work best as within the specific temperature and the pH ranges, and the sub-optimal conditions
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Contrary to the structures of the hindbrain and the midbrain, most structures of the forebrain are?
Contrary to the structures of the hindbrain and the midbrain, most of the structures of the forebrain are duplicated in both brain hemispheres (i.e., the right brain hemisphere and left brain hemisphere).
What are the right brain hemisphere and left brain hemisphere?The right brain hemisphere and left brain hemisphere are two structures that divide the cerebrum (i.e., the brain) into two major parts, which control the sensory and motor functions of the individual.
The right brain hemisphere controls functions of the left part of the human body, while the left brain hemisphere controls functions of the right part of the human body.
In conclusion, contrary to the structures of the hindbrain and the midbrain, most of the structures of the forebrain are duplicated in both brain hemispheres (i.e., the right brain hemisphere and left brain hemisphere).
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As a class project, Mrs. Wilson had the students collect data for the amount of seeds the class pet birds ate daily. Both birds were given the same amount of food daily. The students submitted that graph below. What should the label be for the y-axis of this graph? The y-axis is the independent variable and should be labelled days. , Not Selected The y-axis is the dependent variable and should be labelled amount of food eaten. , Not Selected The y-axis is the dependent variable and should be labelled type of dogs. , Not Selected Incorrect answer: The y-axis is the independent variable and should be labelled time.
The correct option from the question is B ( The y-axis is the dependent variable and should be labelled amount of food eaten. )
What is a dependent variable?The dependent variable is the variable that is being measured or tested in an experiment.
For example in the study above, we are at the looking at the amount of seeds the class pet birds ate daily. The dependent variable would be the the amount of seeds the class pet birds ate daily since that is what is being measured.
The correct option from the question should then be B ( The y-axis is the dependent variable and should be labelled amount of food eaten. )
One way to help identify the dependent variable is to have it in mind that it depends on the independent variable.
When researchers make changes to the independent variable, they then measure any resulting changes that may occur to the dependent variable.
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I need help please also its not biology its science but it wont let me put it
EASY ((10 PTS)) **HELP ME PLEASEEEEE**
Humans currently are
1. Two of these
2. All of these
3. unevenly distributed and the difference is increasing.
4. using almost half of the Earth's land.
5. using unevenly distributed resources; less than 20% use over 80% of the energy.
6. using over half of all renewable fresh water sources.
7. Three of these
The correct response to the question is; "Three of these"
How is human population?We know that the population of the planet earth have been increasing in leaps and bounds. The birth rate has fast exceeded the death rate in some parts of the world. This tends to upturn the balance that we have in the universe. We could confidently say that the planet is at the brink of exceeding its carrying capacity and this would of course have a much adverse effect on the individuals that live on the earth.
Looking at the map of the world, it is clear that if the population of the earth is not speedily contained the planet would soon exceed carrying capacity with the population being larger in some areas than it is in other places.
We could then conclude that humans currently are;
unevenly distributed and the difference is increasing.using unevenly distributed resources; less than 20% use over 80% of the energy.using over half of all renewable fresh water sources.Learn more about human population:https://brainly.com/question/18508068
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why does the brain have fat tissue and blood vessels? (1 point)
to receive nerve impulses from other body parts and interpret them
to interpret nerve impulses from other body parts and send responses
to protect and nourish the brain cells
to store information
The brain has fat tissue and blood vessels to protect and nourish the brain cells, which need blood vessels to receive nutrients (Option c is correct).
What is brain tissue?Brain tissues are different types of tissues that are mainly composed of neuronal cells, glial cells and endothelial cells, which contain associated tissues such as fat tissue and blood vessels.
In brain tissue, the blood vessels help to transport nutrients such as Oxygen, which is required to carry put the cellular respiration, and fat tissue required to electrically isolate these cells and provide energy storage when required accordingly. All these tissues work together to conduct electrical impulses (i.e. nerve impulses) in the brain.
In conclusion, the brain has fat tissue and blood vessels to protect and nourish the brain cells, which need blood vessels to receive nutrients (Option c is correct).
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The cortical regions that are not directly involved in sensory or motor functions are known as.
The cortical regions that are not directly involved in sensory or motor functions are known as association areas.
Motor functions are those that regulate the movement of the muscles in the body. The neurons that stimulate signals for the movement are called motor neurons. The motor activities include the reflex actions, the muscular movements and the involuntary actions of the body.
Association areas are located in the frontal lobe of the cerebral cortex of the brain. These regions receive inputs from various areas. The functions performed by association areas are: memory retention, communication and inter-sensory association. Examples are: amygdala, hippocampus, etc.
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Identify the dependent (responding) variable in this experiment. For crickets
The dependent variable in the experiment is the stridulation of the chirping of the crickets.
What are the dependent variables?The variable that alters when the independent variable does is known as the dependent or responsive variable. It is the sound of the cricket in this instance.
In an experiment, there are three different kinds of variables. These variables serve as controls, dependents, and independents.
Melissa's experiment in this case involves a cricket chirping as the temperature rises. Chirping will be the dependent variable.
Therefore, the dependent variable is the stridulation of the sound of the crickets.
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The question is incomplete. Your most probably complete question is given below:
Melissa raises crickets at her pet store that she sells for reptile food. She thinks that crickets chirp more often when the temperature gets warmer. She decides to conduct an experiment to prove her theory.
the main source of energy for our plants is
Answer:
sunlight brainliest please
Answer:
The main source of energy for plants is of course from the sun. Solar energy aka sunlight is emitted by the sun and that is basically fuel for plants to grow and develope.
Explanation:
What country is at 85* South and 10* East?
Answer: close to the south pole so antartica
antibiotics that target cell wall synthesis ultimately cause bacterial cell death as a result of antibiotics that target cell wall synthesis ultimately cause bacterial cell death as a result of plasmolysis. decreased synthesis of plasma membrane. cell shrinkage. inhibition of molecular transport. osmotic lysis.
Antibiotics that target cell wall synthesis ultimately cause bacterial cell death as a result of osmotic lysis.
Interactions between antibiotic drugs and their intended targets and the corresponding direct effects are typically well understood. The bacterial reactions to antibiotic medication treatments, on the other hand, that cause cell death are less well understood and have shown to be highly complicated, including numerous genetic and metabolic processes. Here, we discuss the complex impacts of drug-target interactions, including the critical cellular functions that bactericidal antibiotics impede and the related cellular responses that support bactericidal antibiotic death.We also go over recent discoveries about these mechanisms that have come from the study of biological networks and explain how these discoveries, along with associated advancements in synthetic biology, may be used to generate brand-new antibacterial drugs.To learn more about Antibiotics.
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Bottleneck events lead to _______. a. population growth b. an increase in inbreeding c. an enrichment of dominant genetic traits d. a reduced rate of species mutation please select the best answer from the choices provided a b c d
Answer:
d
Explanation:
a one-million-year-old skull bearing traits associated both with homo erectus and, in addition, homo sapiens has been found in the afar region of eritrea, and indicates that modern humans developed much earlier than previously thought.
A one-million-year-old skull bearing traits associated both with homo erectus and, in addition with both Homo erectus and Homo sapiens has been found in the Afar region of Eritrea, indicating.
Homo sapiens is a term used to describe all modern humans. Nearly 200,000 years ago, in conjunction with early Neandertal technology, our species of humans initially started to evolve. It is now known that early Homo sapiens, or modern humans, lived with Neandertals rather than emerging later. However, it seems likely that Homo heidelbergensis was the common ancestor of both modern humans and Neandertals.Modern humans often have more delicate skeletons than Neandertals and other late archaic humans. The occipital buns seen on the rear of Neandertal skulls are uncommon in them. They also have smaller features, pointy chins, and relatively high foreheads.To learn more about Homo sapiens.
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