Answer:
In eukaryotic cells, or cells with a nucleus, the stages of the cell cycle are divided into two major phases: interphase and the mitotic (M) phase. During interphase, the cell grows and makes a copy of its DNA. During the mitotic (M) phase, the cell separates its DNA into two sets and divides its cytoplasm, forming two new cells.
Explanation:
1. How much confidence would you have in the conclusion of experiment 3 if you found out that the temperature was not controlled? Explain your reasoning.
2. Create your own flow chart to answer a causal question.
I would have a good confidence level if I found out that the temperate was not controlled because in Experiment 3, because the use of temperature was not needed, as only light was needed.
What is an Experiment?This refers to the procedure that is done, usually in a controlled manner to find the results of something.
Hence, we can see that the three experiments were done in order to find out the factors that would lead to an increase in water evaporation, and because in Experiment 3, light is used, and not temperature, I would not be bothered.
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The stress hormone cortisol plays a major role during the stress response in Group of answer choices relieving pain. mobilizing nutrients to meet energy needs. increasing heart and respiratory rates. decreasing appetite and thirst.
The stress hormone cortisol plays a major role during the stress response in mobilizing nutrients to meet energy needs
The two adrenal glands, one on top of each kidney, need cholesterol to make the glucocorticoid (steroid hormone) cortisol. It is typically released in response to situations and activities including getting up in the morning, working out, and intense stress.Since it is involved in reactions to stress, cortisol is frequently referred to as the stress hormone. Blood pressure, blood sugar, and immunological responses all rise as a result. created during arduous activity, excitement, and orgasm by the pituitary gland and hypothalamus, which has analgesic benefits.In addition, cortisol is crucial for human nutrition. By deciding which kind and quantity of substrate (carbohydrate, fat, or protein) the body needs to meet its physiological demands, it manages energy.learn more about cortisol here: https://brainly.com/question/1059659
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Which operon type(s) use the product produced from the biochemical pathway as a repressor or activator
Both negative repressible and positive repressible operon.
What are negative and positive repressible operon?
A regulatory protein attaches to DNA during the negative control process and prevents transcription. For positive control, the situation is the opposite.
Operons that are negatively repressible require an inducer to bind to them in order to stop transcription.
Regulatory proteins are activators in the presence of positive control. In the case of positive repression, the inducer binds to the protein to change its structure, preventing it from binding to the DNA and allowing transcription to take place.
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Question
A statistical sample is part of a population taken to estimate a parameter or characteristic of the
entire population.
true or false ?
Cell X has a resting potential of -80mV. If a ___________ open and causes the potential to change 10mV, the resulting potential will be ___________.
K+ channel opens, resulting potential -90mV
This is due to hyperpolarization.
What is hyperpolarization?Hyperpolarization is a change in a cell's membrane potential that makes it more negative (i.e. decreases).It results in increase in the potential difference across the membrane.K+ moves from the inside to outside as some potassium channels remain open and sodium channels reset. A period of increased potassium permeability results in excessive potassium efflux before the potassium channels close. K+ channels typically cause membrane potential to become more negative.Learn about depolarization here:
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How does the proper breakdown of collagen in red meat affect the final texture when braised or stewed
Collagen makes up the majority of skin and the tendons that join muscles to bones. Cooking techniques that use slow, wet heat, such stewing or braising, are optimal for cuts that are high in collagen. Collagen is soluble in water, and it transforms into gelatin when cooked gently over moist heat. By chopping meat into smaller pieces, that makes the fibers smaller and simpler to break apart, we can also make collagen less rigid.
The most common protein in animals is collagen, a lengthy, rigid protein. It is made up of three distinct molecules that are wrapped around one another to form a rope-like structure. These molecules are each formed of amino acid chains. The collagen is extremely strong because of this structure, which also makes it more challenging to break down. A piece of meat becomes increasingly difficult to cut and chew as the amount of collagen increases.
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s slogans on good habits and cleanliness
Clean your hands. Protect your health
Answer:
cleaning your body every day.
washing your hands with soap after going to the toilet.
brushing your teeth twice a day.
covering your mouth and nose with a tissue or your sleeve when sneezing or coughing.
washing your hands after handling pets and other animals.
Explanation:
The edge of a continent where the ocean water is shallow is called the
A) abyssal plain
B) ocean trench
C) mid-ocean ridge
D) continental shelf
Answer:
D. Continental Shelf
Explanation:
Continental shelves have shallow waters before the continental slopes and then to the deep ocean. A continental shelf is the edge of a continent lying beneath the ocean. Also, it is in the name, Continental Shelf.
Hope this helps!
Which of the following statements about turning points in environmental policy is true? a. Environmental policy has changed over time as a result of pressure from industry. b. Turning points in environmental policy were typically the result of urban expansion. c. Turning points in environmental policy have come about through increased public awareness. d. Environmental policy has changed little over the history of the United States. Please select the best answer from the choices provided
The True statement about turning points in environmental policy is :
( C ) Turning points in environmental policy have come about through increased public awareness.
Turning point in environmental policies
The turning points in environmental policy came through the increase in public awareness on the importance of a safe and habitable environments for habitants. Environmental policies have relatively remained the same over time but have continued to gear support from all corners therefore an increase in public awareness.
Hence we can conclude that Turning points in environmental policy have come about through increased public awareness.
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All of the following are iron-binding proteins found in humans EXCEPT Group of answer choices ferritin. siderophorin. hemoglobin. transferrin. lactoferrin.
All of the following are iron-binding proteins found in humans EXCEPT siderophorin.
Serum proteins, or iron-binding proteins, are found in the blood and are utilized to bind and transport iron, as their name implies. The multifunctional protein of the transferrin family is called lactoferrin (LF), also referred to as lactotransferrin (LTF).Based on the structure of their active site, iron-dependent enzymes can be categorized into three major classes: non-heme mono-iron, non-heme diiron, or heme centers. These enzymes catalyze a wide range of biological events.The oxygenase are a well-known set of iron-dependent enzymes that aid in the addition of one or both oxygen atoms to a hydroxyl group.Iron-binding enzymes include transferrin, lactoferrin, hemoglobin, and ferritin.However, siderophorin are iron chelating compounds found in bacteria and fungi.learn more about iron-binding proteins here: https://brainly.com/question/17246364
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The ________________ releases hormones directly into the blood and the ________________ receives hormones from the hypothalamus cells which in turn causes the release of more hormones.
The Endocrine glands releases hormones directly into the blood and the Pituitary gland receives hormones from the hypothalamus cells which in turn causes the release of more hormones.
Endocrine glands produces hormones that are immediately released into the blood and travel to all of the body's tissues and organs. Numerous bodily processes, including growth and development, metabolism, and reproduction, are regulated by endocrine glands.The pituitary, thyroid, and adrenal glands are a few examples of endocrine glands.The pituitary gland is a tiny, pea-sized gland that is situated beneath the hypothalamus at the base of the brain.Released hormones from the hypothalamus, such as CRH, GnRH, and TRH, affect the pituitary gland. The pituitary gland releases gonadotropins (such as LH and FSH) or TSH in response to these stimuli. The adrenal glands are stimulated to release cortisol, which has metabolic effects.learn more about Endocrine glands here: https://brainly.com/question/1401777
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When Nibras was chased and attacked by a dog during his regular morning run, he experienced the classic symptoms of the fight-or-flight response. According to Walter Cannon, it is likely that Nibras's sympathetic nervous system stimulated his adrenal medulla to secrete hormones called:
According to Walter Cannon, it is likely that Nibras's sympathetic nervous system stimulated his adrenal medulla to secrete hormones called catecholamines.
A catecholamine is a monoamine neurotransmitter, an organic compound that has a catechol and an aspect-chain amine. Catechol can be either an unfastened molecule or a substituent of a larger molecule, in which it represents a 1,2-dihydroxybenzene organization.
A kind of neurohormone (a chemical that is made by means of nerve cells and used to ship signals to different cells). Catecholamines are crucial in strain responses. excessive degrees purpose high blood stress that could lead to headaches, sweating, pounding of the heart, pain inside the chest, and anxiety.
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Peter and rosemary grant began studying the galapagos finches in 1973. For about 40 years, they studied the finches on daphne major. Why was this an ideal place to study the evolution of the finches?.
Peter and rosemary discovered a natural ecosystem with an extreme climate, oscillating between cycles of intense drought and abundant rainfall, as well as an uncontaminated area that had never been explored by humans. This was an excellent location to study the evolution of Galapagos finches.
For their outstanding long-term studies showing evolution in action in Galápagos finches, Peter and Rosemary Grant are renowned.They have shown that natural selection is responsible for the incredibly quick changes in body and beak size in response to variations in the availability of food.Due to the lack of predators or rivals for the finches, Daphne Major makes an excellent location for research. (The cactus finch is the only other finch on the island.) The weather, and consequently the availability of food, has a significant impact on the medium ground finch's capacity to survive.learn more about Galápagos finches here: https://brainly.com/question/960688
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You work in a museum that has a huge, beautiful, stained-glass window. Each panel tints the light a different color. Recently a new exhibit showcasing plants from around the world has set up a table in front of the window. Plant 1 is in front of a blue stained glass, Plant 2 is in front of a purple stained glass, and Plant 3 is in front of a green stained glass. Which plant should you tell the museum director to move so it doesn’t become malnourished?
A. Plant 3
B. Plant 2
C. Plant 1
D. All three plants
Answer:
The plant that should be moved to not become malnourished is the plant 3.
Explanation:
The visible spectrum, or optical spectrum, is the portion of the electromagnetic spectrum whose radiation is composed of photons capable of sensitizing the human eye of a normal person. The corresponding range of visible light radiation is identified.
With that being said, plant 3 is in front of a green stained glass. plants have chlorophyll pigment that reflect back the green light, so the green light is least effective for photosynthesis and for that reason it will die as quickly as if it is kept in dark.
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brainstorm ideas brainstorm ideas for your house. think about devices, appliances, and building materials you want your house to have. in addition, these computer tools might help you brainstorm some ideas. this calculator gives you the average energy use of household appliances, so you can research energy-saving alternatives. this quiz can tell you what your carbon footprint is and how to reduce it in your home. consider turning some of the questions into energy solutions. for example, one of the questions is, do you turn off your faucets? if water supply is a concern in your region, perhaps faucets that turn off automatically might be an eco-friendly solution. this database provides information about air emissions rates in a region. search the zip code for the location you chose and select one of the electrical companies listed. then scroll down to see how much of the energy in this zip code comes from renewable and nuclear energy (a non-renewable, cleaner energy source) compared to fossil fuel sources (oil, coal, and gas). bar graphs compare the zip code's energy profile to the national average. write down your ideas for the house you’ll design. explain how those ideas can reduce carbon dioxide emissions and preserve natural diversity.
The carbon emission can be reduced and natural diversity can be preserved by constructing homes as “green buildings”.
A "green building” is one that minimizes or eliminates negative effects on our climate and natural environment all through design, construction, or operation and can create a positive impact. Green buildings protect valuable natural resources and raise our standard of living.
The carbon footprint is the total amount of greenhouse gases including carbon dioxide that is generated by human activity.
Following improvements in house designs can help in reducing the emission of carbon dioxide:
Use of renewable energy resources like solar energy, hydraulic energy, etc because these forms of energy do not emit any greenhouse gases while their production and operation.
Planting indoor plants and creating a garden to absorb the carbon dioxide produced in the house and improve the quality of air.
Installing appliances with more energy stars, these types of appliances have low CFC emissions and hence decrease carbon dioxide trapping in the environment.
Planting a garden with no usage of chemical fertilizers or pesticides to preserve natural diversity.
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Which of the following need therapeutic cloning technology?
I. Tissue transplantation
II. Replacing insulin-producing pancreatic cells
III. Generating human organs
A. I and II
B. II and III
C. I and III
D. I, II, and III
All of the following will need therapeutic cloning technology which is why option D was chosen.
What is Therapeutic cloning technology?This is the process which involves creating a cloned embryo to produce embryonic stem cells which has the same DNA as donor cells.
This is used for the treatment of different forms of disease or serious forms of injuries encountered by individuals.
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In its excretory role, the urinary system is primarily concerned with the removal of __________ wastes from the body.
Answer:
Toxic
Explanation:
The body removes toxic waste from your body in order to protect it.
The mineral substances that are normally found in the blood, such as sodium and potassium, are known as ____________________.
The mineral substances that are normally found in the blood, such as sodium and potassium, are known as Electrolytes.
Who are electrolytes?Electrolytes are minerals that carry an electrical charge when they are dissolved in a liquid such as blood. Blood electrolytes – sodium, potassium, chloride and bicarbonate – help regulate nerve and muscle function and maintain an acid-base balance.
Major Electrolytes are Sodium, potassium, calcium, phosphate and magnesium are the electrolytes involved in salt balance disorders. In addition, the concentration of chloride and bicarbonate is commonly measured.
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An sRNA is isolated from a bacterial cell. What would you do to determine whether it is a cis-encoded or a trans-encoded sequence
The direction of the regulation of gene expression is to identify whether the sRNA isolated from bacterial cell is cis-encoded or trans-encoded.
Small Regulatory RNAs:
These are the small RNA molecules (sRNA) used for the gene expression in prokaryotes. They directly bind to the target mRNA and initiate the regulation of the gene expression.There are two types of small regulatory RNA -cis encoded and trans encoded sRNA.
These both sRNA are regulatory proteins, involved in the post-transcriptional regulation in prokaryotes and in eukaryotes.In cis-encoded sRNA, the regulation of gene expression starts in the opposite direction whereas, in trans-encoded the regulation starts in the same direction from the promoter of the bacterial chromosome.
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Acylhomoserine lactones used in quorum sensing regulate their own synthesis by a(n) _________ system. Multiple Choice riboswitch antisense catabolite repression autoinduction
Acylhomoserine lactones used in quorum sensing regulate their own synthesis by an autoinduction system.
Numerous bacteria use acyl homoserine lactones (acyl-HSLs), significant intercellular signaling molecules, to track the density of their population for quorum-sensing control of gene expression. The LuxI family of proteins produces the signals in question.A lot of proteobacteria use quorum-sensing signals from acyl-homoserine lactones. Cells create a baseline amount of signal at low population densities, and when enough signal has accumulated in the environment, it binds to its receptor and activates quorum-sensing-dependent genes.learn more about Acylhomoserine here: https://brainly.com/question/14452252
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Explain why a balance between effectivity and efficiency is of utmost importance in the educational environment
A balance between effectivity and efficiency is of utmost importance in the educational environment in order to undertake the right activities in the right manner.
Efficiency in education means gaining the right kind of knowledge and innate one's abilities with the given level of resources, avoiding any wastage.
Effectivity, on the other hand, implies whether or not using the given level of resources positively impacts academic achievement.
A balance between efficiency and effectiveness is required in the educational environment as effectiveness is achieved in most cases but efficiency remains of concern. The required outcomes of education are often achieved but resources required to achieve those outcomes such as time, competency, ability, and finances are often not utilized in an efficient manner and lead to wastage.
Therefore, a balance is required to complete the right activities in the right way.
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Anaerobic respiration occurs in absence of oxygen and lactic acid fermentation occurs in lack of oxygen, so, why lactic acid fermentation is a type of anaerobic respiration?
Fermentation of lactic acid occurs when cells make ATP without having a supply of oxygen.
Oxygen abundance permits aerobic respiration to proceed. This permits glucose to be totally oxidized to produce an abundance of energy. In contrast, when oxygen is low, cells switch to a significantly less efficient type of energy production. This process is called anaerobic respiration.
Glycolysis is the first step in the fermentation process, but fermentation does not involve the second and third stages of aerobic cellular respiration (the Krebs cycle and oxidative phosphorylation). Glycolysis results in the production of two additional ATP molecules on top of the reduction of two NAD+ electron carriers into two NADH molecules. It is important that NADH be oxidized once more so that glycolysis may proceed and cells can keep producing two copies of ATP. Due to the absence of oxygen, the cells are unable to undergo oxidative phosphorylation, which prevents them from producing more than two ATP during the fermentation process.
There are two different kinds of fermentation: alcoholic fermentation and lactic acid fermentation. Only the fermentation of lactic acid can take place within our cells. The pyruvate produced by glycolysis is converted to lactic acid in the process of lactic acid fermentation in the absence of oxygen.
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Assessment for surfactant level via lecithin/sphingomyelin (L/S) ratio in the amniotic fluid is a primary estimation of fetal maturity. The purpose of surfactant is to:
Assessment for surfactant level via lecithin/sphingomyelin (L/S) ratio in the amniotic fluid is a direct estimation of fetal maturity. The purpose of surfactant is to prevent the collapsing of the alveoli during expiration.
Lecithin Sphingomyelin RatioClinicians can evaluate fetal lung development using a number of techniques, including the Lecithin-to-Sphingomyelin Ratio (L/S ratio). Amniocentesis was used to obtain a sample of amniotic fluid for this biochemical test, which was first developed in the 1970s and used to assess the likelihood that the newborn will experience respiratory distress syndrome (RDS).The maturation of the pulmonary system advances with growing gestational age as fetal lung development happens gradually.Alveoli don't collapse during expiration thanks to the surfactant's impact. Phospholipids, proteins, and lipids are all components of the surfactant. The phospholipids' chemical makeup is significant. One phospholipid in mature surfactant is phosphatidylcholine, also known as lecithin.To learn more about Lecithin refer to:
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Which describes the correct pairing of DNA bases?
O A. A with G, and C with T
O B. A with C, and T with G
O C. A with A, and G with G
O D. A with T, and C with G
ANSWER:
O C. A with A, and G with G
EXPLANATION:
The pH indicator bromothymol blue is an alkaline solution and yellow is an acidic solution. A slight increase in acidity. Such as when co2 gas is added, causes a solution with the indicator to change from blue to yellow. A solution with the indicator would be most likely to turn from yellow to blue when which combination of factors exists?
Water plants in the solution are placed under a bright lamp. Thus, option "B" is correct.
Explain your answer briefly?As we know adding carbon dioxide in as solution result in the change of its acidity this is result in the indicator to change from blue to yellow. In the question, it is asked that what factors from the given option will cause yellow indictor to blue which means what factors cause the solution to be alkaline from acidic.
Placing the green water plants in the solution under a bright lamp will cause the is utilizing and remove present carbon dioxide in the solution and leads the to blue color from the yellow color of the solution.
Thus, this could be the answer.
The question is incomplete, however, the missing part is given as below:
A. Yeast cells and sugar are placed in the solution. B. Water plants in the solution are placed under a bright lamp. C. Algae are placed in the solution and left in a dark room. D. A person blows air into the solution through a straw.
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explain the stages involved in testing a piece of onion for reducing sugar
Onions contains reducing sugars which include fructose, and glucose.
Steps involved in testing for reducing sugarReducing sugar are those sugars that contains free aldehyde groups which can be reduced further in a reaction.
Examples include of simple reducing sugar include fructose and glucose.
The steps that are involved in testing for the reducing sugar include the following:
Cut the onion into small pieces and put into a test tube.Add a few drops of Benedict's solution to the food solution. Heat the test tube in a water bath. If the solution turns orange-red, the food contains sugar.Learn more about sugars here:
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The blood-brain barrier functions to Multiple Choice regulate the movement of materials from the blood to the brain. regulate the synapses between the brain and the blood. serve as an open passage between the blood and CSF surrounding the brain. increase blood pressure in the cranium when needed.
The blood-brain barrier functions to regulate the movement of materials from the blood to the brain (option A).
What is the blood-brain barrier?The blood-brain barrier is a structure in the central nervous system (CNS) that keeps various substances found in the bloodstream out of the brain while allowing in the substances essential to metabolic function, e.g. oxygen.
The blood-brain barrier serves as a protective barrier for the brain that prevents the entry of substances in the bloodstream that can cause brain damage.
Therefore, the blood-brain barrier functions to regulate the movement of materials from the blood to the brain.
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HIV attack of CD4 T cells causes suppression of both cell-mediated and humoral immune responses. Group of answer choices True False
HIV's attack on CD4 T cells causes suppression of cell-mediated and humoral immune responses. the statement is correct is true
Group of answer choices True How does HIV infect the human body?HIV binds to a component of that cell's membrane, CD4, penetrating its interior to multiply. As a result, the defense system gradually loses the ability to respond properly, making the body more vulnerable to disease.
With this information, we can conclude that CD4 are immune system cells (lymphocytes) and the main target of the HIV virus. The number of CD4 decreases with the evolution of the pathology.
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A group of students wanted to compare the rate of respiration in four different fruits, as well as in tomatoes.
a. For this experiment, state the independent variable and the dependent variable, and suggest one variable
that should be fixed.
In this case, the dependent variable is the rate of respiration, the independent variable is the type of plant (either fruit or tomatoes), whereas a fixed variable may be the temperature.
What is a dependent variable?A dependent variable is any type of experimental condition that is modified during the experiment.
Conversely, independent variables do not change along the experimental procedure (e.g., type of plant).
Finally, a fixed variable, also known as a control variable, is any condition that remains stable during the experimental procedure (in this case, for example, room ambient temperature).
In conclusion, the dependent variable is the rate of respiration.
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Scientific research shows that our global climate is changing. The global sea level is rising and ocean temperatures are increasing. Which of the following best predicts an outcome of this global climate change in a coastal ecosystem? (4 points)
The change in temperature will cause organisms that are sensitive to cold to migrate to the area.
The milder temperature will encourage a growth in the diversity of sea life.
The loss of habitat will lead to endangering or extinction of species living there.
The rising sea level will provide water during drought to species living there.
The statement that best predicts an outcome of this global climate change in a coastal ecosystem is as follows:
The loss of habitat will lead to endangering or extinction of species living there.Thus, the correct option is C.
What is an Ecosystem?An ecosystem may be defined as a place or an area where organisms of different species live together and interact with one another for the purpose of food, shelter, and space.
Coastal ecosystems such as Mangroves, Estuaries, Deltas, Dune fields, Wetlands, Swamps, Salt marshes, etc. should be negatively influenced by the increasing sea level, damaging regional biodiversity by diminishing food sources, transformations in food chains, and structural modifications, in addition to provoking compelled migrations of wild populations from one place to another randomly.
Therefore, the correct option for this question is C.
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The loss of habitat will lead to endangering or extinction of species living there.Answer:
Explanation: