A bacterial cell is in a solution with a chemical gradient. The bacterial cell directs its movements in order to move toward the highest concentration of glucose molecules within the solution. This is an example of positive _______.
A.
geotropism
B.
homeostasis
C.
phototaxis
D.
chemotaxis
Answers
Answer:
The answer is D. chemotaxis
Explanation:
A bacterial cell is in a solution with a chemical gradient. The bacterial cell directs its movements in order to move toward the highest concentration of glucose molecules within the solution. This is an example of positive chemotaxis
Related Questions
A (hydroelectric)
B (wind)
C (geothermal)
Answers
Answer:
Wind energy
Explanation:
flat lands and high winds
Answer:
my recommendation is B. wind.
How do the properties of lipids
help explain the structure of a cell membrane?
Answers
Explanation:
Lipids give cells membranes a flexible structure which forms a strong barrier between the cell and its surroundings
Answer:
Lipids give cells membranes a flexible structure which forms a strong barrier between the cell and its surroundings. This tells us that the lipid surrounds the structure which then forms the shape of the cell.
Explanation:
Suppose you have an unknown chemical reaction involving carbohydrates. What is one way to test whether the reaction is dehydration synthesis or hydrolysis reaction? (1 point)
a. Measure the pH level of the reaction.
b. Observe the release of heat during the reaction.
c. Test for the presence of water molecules in the reaction.
d. Analyze the change in color of the reactants.
Answers
The answer is c. When we have an unknown chemical reaction involving carbohydrates, one way to test whether the reaction is dehydration synthesis or hydrolysis reaction is to test for the presence of water molecules in the reaction.
When we have an unknown chemical reaction involving carbohydrates, one way to test whether the reaction is dehydration synthesis or hydrolysis reaction is to test for the presence of water molecules in the reaction. The answer is c. Hydrolysis is the reverse of dehydration synthesis, which breaks down a larger molecule into smaller subunits with the addition of a water molecule. The splitting of a polymer with water into two monomers is called hydrolysis. Hydrolysis is a chemical reaction in which a compound is broken down by reacting with water. This occurs when a water molecule breaks up into H+ cations and OH- anions, which then form bonds with the reactants. This reaction occurs in the opposite direction to dehydration synthesis, which involves the removal of water molecules from reactants to form a larger molecule. When a water molecule is absorbed by the reactants, it is a hydrolysis reaction. Therefore, when testing the reaction, if we observe the presence of water molecules in the reaction, then we can confirm that the reaction is hydrolysis.
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why is the sky black
Answers
Answer: The sky appears black at night due to the absence of sufficient light reaching our eyes from distant stars and galaxies.
Explanation:
The sky appears black during the night when there is no significant source of illumination. This phenomenon is known as the "night sky paradox." The reason behind the blackness of the night sky is primarily attributed to the vastness of the universe and the limitations of human vision.
During the day, the sky appears blue because of a process called Rayleigh scattering. The Earth's atmosphere scatters shorter blue wavelengths of light more than longer wavelengths, creating the blue color we observe.
At night, when the sun is no longer visible, our line of sight extends deeper into space. We can observe countless stars in various directions, implying that there should be light coming from all those stars. However, the night sky still appears dark overall.
The reason for this darkness is that the universe is not infinitely old. It has a finite age. Consequently, the light from the most distant stars and galaxies has not had enough time to reach us yet. As a result, the vast majority of the universe is beyond our observational reach, and we perceive the night sky as predominantly black.
In addition, there are other factors that contribute to the blackness of the night sky, such as interstellar dust, which absorbs and scatters light, and the absorption of light by gases and particles in our atmosphere.
Therefore, the sky appears black at night because the light from distant stars and galaxies has not reached us, and the absence of significant illumination sources contributes to the overall darkness.
Which of the possible examples below would most likely lead to a change in the cell theory? A Scientists find life on Mars that is not made of cells. BScientists identify a cell organelle that practices the process of photosynthesis. C Scientists determine that an organism is living if it is made of twenty structurally-identical cells. D Scientists gather life from a volcano that is composed of cells which are very different from humans.
Answers
Answer: Probably B?
Explanation:
The possible examples below would most likely lead to a change in the cell theory: Scientists discover life on Mars that is not made of cells, i.e., option A, despite the fact that the cell theory states that all living organisms are made of cells.
What is the significance of the cell and its importance?Cell theory explains that life is made up of cells, but If scientists were to discover life on Mars that did not fit this definition, it would challenge the current understanding of the cell theory and the discovery of life on Mars that is not composed of cells would indicate that the cell theory is not universally applicable.
Hence, the possible examples below would most likely lead to a change in the cell theory: Scientists discover life on Mars that is not made of cells, i.e., option A, despite the fact that the cell theory states that all living organisms are made of cells.
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What are 3 solutions that would work better than the stamp act
Answers
The solutions that would work better than the stamp act are:
The Declaratory ActsThe Sugar Act The tea Act What was the solution to the Stamp Act?Benjamin Franklin petitioned the British House of Commons, and the Stamp Act was repealed by a vote of Parliament. However, the Declaratory Acts were approved by Parliament the same day, stating that the British government possessed unrestricted and complete legislative authority over the colonies.
The Stamp Act imposed a tax on products inside the colonies, whereas the Sugar Act solely applied to imports. Internal taxes had hitherto solely been the responsibility of colonial assemblies.
Therefore, one can say that the Tea Act was enacted by the British Parliament in 1773 in an effort to salvage the struggling business. The act gave the firm permission to commission agents who would have the exclusive right to sell tea in the colonies and to send its tea directly to the colonies without first landing it in England.
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what is the role of helper t cells in the adaptive immune response? what is the role of helper t cells in the adaptive immune response? helper t cells produc
Answers
Helper T cells are arguably the most important cells in adaptive immunity because they are required for almost all adaptive immune responses.
They promote the activation of macrophages and B cells that secrete antibodies and kill ingested microbes, as well as cytotoxic T lymphocytes that kill infected target cells. We cannot defend ourselves against many typically benign bacteria without helper T cells, as was clearly demonstrated in AIDS patients. Helper T cells, however, require stimulation to develop into effector cells; they are unable to function on their own. They emerge on the surface of antigen-presenting cells during the innate adaptive immune reactions triggered by an infection.
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what will happen if the relative humidity is 100 percent, and the temperature begins falling?
Answers
Answer:
It will start to rain.
Explanation:
What best explains why different cells within and individual organism function differently
Answers
Answer:
The majority of living things are made up of various types of cells that are each specialized to execute a specific purpose. Because certain enzymes, also known as proteins, play a big role in biochemical function, distinct sets of genes must be turned on and off in different cell types. This is how cells differ from one another.
What would you expect population of sand dollars to be
if they sampled 8 m' of the reef? 12 m??
Answers
Answer:
Mark as Brillianist bbfgkcdgjbcdgjnbxdhjnvxd
Where are gliding joints found? A. Wrist and ankle B. Neck and back. C. Hip and shoulder. D. Knee and elbow
Answers
Answer: A
Explanation: The primary places in the human body that you will find gliding joints are in the ankles, wrist, and spine.
Which of the following is NOT true about homeostasis?
A - Maintaining homeostasis requires that all body systems work together.
B - Long periods of stress can disrupt homeostasis.
C - Body temperature is a factor of homeostasis.
D - Only the nervous and endocrine systems are involved in maintaining homeostasis.
Answers
what is a dangerous chemical sometimes found in brown algae
Answers
Answer:
chlorate is toxic only to brown algae thats what ik
Explanation:
As humans, our eyes are adapted to see the colors in the visible light range. If we are looking at an orange object, such as a pumpkin, why does that object appear orange? because the object is 4,000 K because the object is absorbing orange wavelength light because the object has a wavelength of about 0.6μm because the object is reflecting orange wavelength light
Answers
The pumpkin appears orange because the object is reflecting orange wavelength light.
When we perceive the color of an object, it is due to the way light interacts with that object. In the case of a pumpkin, its appearance as orange is primarily attributed to the fact that it reflects light in the orange wavelength range. The surface of the pumpkin absorbs light of other wavelengths and reflects the orange light, which then reaches our eyes. Our eyes are adapted to detect this range of colors, known as the visible light spectrum, which encompasses wavelengths between approximately 400 to 700 nanometers.
The color of an object is determined by the wavelengths of light that it reflects or emits. When light from a source, such as the sun or a light bulb, strikes an object, some wavelengths are absorbed while others are reflected. In the case of the orange pumpkin, it absorbs light of other colors (wavelengths) such as blue and green, but reflects the orange wavelength light. This reflected light enters our eyes and is interpreted by our brain as the color orange.
The phenomenon of selective reflection and absorption of light by objects is what allows us to perceive a variety of colors in our surroundings. It is the interaction between light and matter that gives rise to the perception of color, and in the case of the orange pumpkin, its distinct coloration is a result of its ability to selectively reflect light in the orange wavelength range.
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What type of bond is found in region 2?
A. Hydrogen bonds
B. Peptide bonds
C. Covalent bonds
D. Enzyme substrate bonds
Answers
Answer: A
Explanation:
Organisms with the most beneficial traits will survive. This is commonly known as:.
Answers
Answer:
Natural selection
Explanation:
you carry out the experiments, check the results with what you would have expected to happen given if each explanation were correct, to eliminate all the ones whose expected results did not come out of the experiment. the explanation that remains after this process is called
Answers
You conduct the tests, compare the findings to what you would have anticipated would occur if each explanation were true, and then rule out any candidates whose predicted outcomes did not emerge from the experiment. The scientific explanation or hypothesis is what is left over after this procedure.
The scientific method is what is known as a methodical and empirical strategy used to research and understand natural phenomena.
The scientific method involves observation, hypothesis formation, prediction, experimentation, and conclusion drawing. The explanation that remains after all other explanations have been eliminated is referred to as the scientific theory.
A theory is a well-thought-out explanation for observations of the natural world that has been established using the scientific method and incorporates a number of facts and hypotheses.
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Which abdominopelvic region is located directly inferior to the left hypochondriac region? Hypogastric region O Epigastric region Left lumbar region Right hypochondriac region
Answers
The abdominopelvic region that is located directly inferior to the left hypochondriac region is the left lumbar region. The correct answer is the left lumbar region.
The left hypochondriac region is located on the left upper quadrant of the abdomen, just below the left ribcage. The left lumbar region is located on the left middle portion of the abdomen, between the left hypochondriac region and the left iliac region. Abdominopelvic region - The centre of the umbilical region (belly button) superior to the umbilical region is the epigastric region (above belly) inferior to the umbilical region is the hypogastric region (pubic area) Located lateral to the hypogastric area is the right iliac (inguinal region).The abdominal cavity and the pelvic cavity make up the abdominopelvic cavity, which is a bodily cavity. The stomach, liver, pancreas, spleen, gallbladder, kidneys, small intestine, and the majority of the large intestine are all located in the upper part of the body, which is called the abdominal cavity.
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Prompt:
Based on the TUVA activity, state a scientific explanation on the
main cause of global warming.
Claim (Please refer to number 2 on your handout):
Evidence (Please refer to table and questions 2 and 3 about the
table):
Reasoning (Please refer to the analysis questions from your
handout):
Answers
Answer:
Main causes of Global Warming
Global warming is an aspect of climate change, referring to the long-term rise of the planet's temperatures. It is caused by increased concentrations of greenhouse gases in the atmosphere, mainly from human activities such as burning fossil fuels, deforestation and farming.
Global warming occurs when carbon dioxide (CO2) and other air pollutants and greenhouse gases collect in the atmosphere and absorb sunlight and solar radiation that have bounced off the earth's surface.
Five Causes of Global Warming are:---
Greenhouse Gases Are the Main Reasons for Global WarmingVariations in the Sun's IntensityIndustrial ActivityAgricultural ActivityDeforestationThe ozone destroying pollutants primarily comes from air conditioner coolants, refrigerator coolant, aerosol spray, and plastic foam. *
true
false
Answers
Answer:
true
Explanation:
Chlorofluorocarbons or CFCs are the main cause of ozone layer depletion. These are released by solvents, spray aerosols, refrigerators, air-conditioners, etc. The molecules of chlorofluorocarbons in the stratosphere are broken down by the ultraviolet radiations and release chlorine atoms.
The ______ of photosynthesis are the _______ of cellular respiration meaning their equation are the same but _______ of each other. The processes and all of life _______ on each other for survival.
Answers
Answer: The products of photosynthesis are the reactants of cellular respiration meaning their equation are the same but in direct opposite of each other. The processes and all of life depend on each other for survival.
Explanation: feel free to let me know if im wrong
Circle the correct answer
1. True False
In AM waves, amplitude changes.
Answers
How many different types of gametes could an organism with the genotype aabbcc produce?.
Answers
Answer:
Thanks
Explanation:
primary insomnia is most often tied to: group of answer choices stress substance abuse gerd genetic factors
Answers
primary insomnia is most often tied to genetic factors, although other factors such as stress, substance abuse, GERD, and environmental factors can also contribute to sleep difficulties.
Primary insomnia refers to sleep problems that do not result from any other cause and are not linked with any other medical condition. According to the Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition (DSM-5), primary insomnia is described as sleep difficulty that lasts for a month or longer and is not related to other medical, psychiatric, or environmental factors.
The causes of primary insomnia are still unknown. However, certain risk factors have been found to contribute to the development of primary insomnia. They are:
Genetic factors
Hyperarousal
Stress
Sedentary lifestyle
Changes in circadian rhythmInappropriate sleep habits, such as sleeping in too late or going to bed too late
Psychological conditions like anxiety and depressionSubstance abuse or withdrawal
GERD (gastroesophageal reflux disease)
The symptoms of primary insomnia include difficulty in sleeping, waking up too early, or difficulty in staying asleep. The person affected by primary insomnia may also experience fatigue, irritability, difficulty concentrating, and decreased performance at work or school.
Treatment for primary insomnia may include cognitive-behavioral therapy, relaxation techniques, stimulus control, and sleep restriction therapy. Doctors may also prescribe sleep medication in cases of severe insomnia.
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DNA sequences can act as "tape measures of evolution." Some highly-conserved regions of the human genome (similar to comparable regions in other species) don't code for proteins. Why?
1. Such regions coded for proteins in genomes of distant human ancestors, but over time they became noncoding; however, conserving their sequence remained unchanged.
2. Such regions play a significant role in gene regulation. That is why they remain conservative under the influence of natural selection.
3. Such regions are the sites of DNA recombination. They should remain conservative to provide an accurate recombination process during cell division.
4. Such regions remain conservative because the mutation rate differs along the genome. In other words, such regions remain conservative accidentally.
Answers
Answer:
2. Such regions play a significant role in gene regulation. That is why they remain conservative under the influence of natural selection.
Explanation:
Within the genome there are many non-coding regions that control the expression of master developmental genes such as, for example, Hox major transcription factors (TFs) in animals and MADS-box TFs in plants. These gene regulatory regions (e.g., promoters and enhancers) are generally evolutionarily conserved within certain taxonomic groups. In consequence, such non-coding regions are well known to be conserved and interact in a sequence-specific manner with major transcription factors in order to regulate developmental pathways.
consider the three key central metabolic pathways (glycolysis, pentose phosphate pathway, and the tca cycle). what three beneficial products of these pathways?
Answers
ATP, lowering power, and precursor metabolites are the three positive outcomes of these pathways.
What kind of thing is a metabolic example?Metabolic pathways include, for instance, the processes of constructing and decomposing glucose molecules. A metabolic route is a network of interconnected chemical processes that support one another. The route transforms molecules into products by bringing in one or more starting molecules and a succession of intermediates.
Poor metabolic health refers to what?You are more likely to suffer dietary inflammation and larger changes in your blood fat, blood sugar, and insulin levels after eating when your metabolic health is compromised. Your risk of developing metabolic disorders and the metabolic syndrome is increased by doing this, which is bad for your health.
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Adaptation implies that an individual has successfully created a new balance between the stressor and the ability to deal with it. The safety margin for adaptation of most body systems is considerably greater than that needed for normal activities. The method of adaptation that allows the body to live with only one of a pair of organs (i.e., one lung or one kidney) is called: Group of answer choices
Answers
The adaptation that allows the body to live with only one of a pair of organs is called compensation. Adaptation refers to a change in an organism to better survive in an environment. Compensation is a biological process that helps an organism maintain its physiological equilibrium despite the loss of a limb or organ.
The compensation mechanism allows the body to adjust its metabolic processes and circulatory function to maintain the homeostasis of vital organs in the face of loss or damage of some organs.The safety margin for adaptation of most body systems is considerably greater than that needed for normal activities. Compensation is a mechanism that allows for adaptation when the body loses an organ or part of an organ. This can occur through the use of residual or auxiliary function from other organs to maintain homeostasis, or through the enlargement of organs to accommodate the increased load.
Compensation can also occur through the development of new blood vessels to provide greater oxygenation or nutrient delivery to an area of the body that has lost its normal blood supply. The method of adaptation that allows the body to live with only one of a pair of organs (i.e., one lung or one kidney) is called compensation. This mechanism can be life-saving for individuals who have lost a critical organ or have a congenital defect. The remaining organ or organs take on the extra load, and metabolic and circulatory changes occur to maintain homeostasis in the body. Compensatory mechanisms are complex and often require the participation of several body systems to function properly. They are an excellent example of the body's ability to adapt and survive in the face of adversity.
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wht is photosynthesis
Answers
Answer:
a process used by plants to convert sunlight to energy
Which body response to an acute inflammation will the nurse assess if the client is experiencing a systemic response?
Answers
The body response to an acute inflammation that the nurse will assess if the client is experiencing a systemic response is Fever and tachycardia.
Acute inflammation occurs when a specific injury occurs in which certain soluble mediators like cytokine, acute phase protein and chemokines are released to the injury site that promotes migration of neutrophils and macrophages.
The signs of inflammation include heat, pain, redness, swelling, pain and loss of function.
When acute inflammation does not settle in a week or so it can lead to chronic inflammation that can last for years also.
Fever and tachycardia are the common responses seen during acute inflammation.
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a wave of chemical reaction and electrical activity transmitted between noureons is called a_______
Answers
The wave of chemical reaction and electrical activity transmitted between neurons is called a nerve impulse.
A nerve impulse is an electrical signal that transmits information between neurons, allowing for communication within the nervous system. The transmission of nerve impulses occurs when neurotransmitters release chemicals that bind to receptors on the receiving neuron, causing an electrical signal to be generated and propagated down the length of the neuron. The nerve impulse is essential to the proper functioning of the nervous system, allowing for the transmission of sensory information, the control of movement, and the regulation of bodily functions such as heart rate and breathing.
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