The three factors that must have contributed to their erroneous results obtained from Jonathan and Molly is the presence of contaminants, use of unwashed test tubes and expired laboratory reagents.
What is a nutritional label?A nutritional label is defined as the description found on the packages of food products which gives the consumer an insight of the nutritional value of the package food content.
The various contents of the food are being classified under the following nutrients with their exact caloric quantity:
Carbohydrates.Proteins.Proteins.Fats.Vitamins.Minerals.Dietary fibre, andWater.The presence of protein in a food product can be tested using the Biuret reagent while the presence of fat can be tested with the use of ethanol.
If after the procedure the test turns out positive for fat and protein but should be negative, the following factors may have contributed to the error in the experiment:
presence of contaminants, use of unwashed test tubes and expired laboratory reagents.Learn more about proteins here:
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How many base pairs long are the E.coli o157:h7 dna fragments that were seperated out on gel
QUESTION 7From the list provided, select all that are needed in the process of genome editing. (Check all that apply.)The target DNA sequenceThe ability to replace the mutated gene sequence with the correct gene sequenceThe ability to remove the mutated gene sequenceThe correctly folded protein encoded by the gene
To answer this we need to remember how gene editing work, for this we need our target sequence, restriction enzymes, and our new sequence, so we can say that the correct options are: 1,2 and 3
The electrical gradient across a muscle cell membrane at rest would drive the movement of Na ions
Answer: The resting potential is determined by concentration gradients of ions across the membrane and by membrane permeability to each type of ion.
Explanation:
Complete the table below by writing Y for a Yes and N for a NO.
The cell membrane is a phospholipidic structure that separates the internal environment of the cell from the outside. It protects the cell and allows communication with the outside by the selective exchange of molecules. It is present in all kinds of cells, prokaryotes (such as bacteria) and eukaryotes (in both animal and plant cells).
Help please thank you!! Match the answers with the questions
Answer: Type of magnet -> Controllable, Temperature -> Independent, Pins -> Dependable
Explanation:
This is easier to understand if you think how an experiment is crafted:
- You need to make sure the elements are somehow the same so you can't have results because of an external variable you were not controlling. In this case, what you are clearly controlling before the experiment is the type of magnet, making sure they are all identical and they don't catch more or less pins because they are big or small.
- Then there is the experiment itself - does temperature affect magnets capabilities? In every experiment there is one thing that you control but change - independent variable. Its not something that the results can change, its something you do. In this case, you put magnets through different temperatures.
- And last, there is the outcome of all this: how many pins they catch. This is the dependable variable, the one that is going to change because of the changes on the independent variable and that you want to observe and note. Sometimes you may already have suspicions (hypothesis) but either way the final result is not something you change yourself.
I hope this was useful!
Assume that a pinhead is 1mm how many spherical bacteria lined up side by side would fit across the pinhead
The no. of bacteria lined up side by side would fit across the pinhead is 1000.
We know that the average size of cocci bacteria is 1 micrometer and 1mm = 1,000 micrometer.
Thus, on a 1mm size pinhead a total of 1000 cocci bacteria should be fit.
Cocci bacteria are spherical because their bodies are round. We can determine whether they are gram-positive or gram-negative by looking at the makeup of their cell walls. There are numerous genera in the Coccus class.
The Greek term "coccus" denotes a spherical body. Staphylococcus, a species that causes phenomena in humans, is the greatest example of a cocci. They are really tiny in size. All cocci bacteria differ from one another in terms of their physiological characteristics, but their bodies are always round. This means that while their size and colour may vary, the shape of their bodies is always cocci or round.
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Which term refers to a cell that is small?
Select one:
a.
macrocyte
O b. microcyte
O c. neocyte
d. normocyte
Answer:
The term that refers to a cell that is small is b) microcyte.
Explanation:
A microcyte is an unusually small red blood cell, associated with certain anemias. A most common cause is iron deficiency in the blood. Hope this helps :)
9. Ecosystems are not based on
a) interrelationships
b) interactions
c) feeding patterns
d) one species
Answer:
d
Explanation:
you need big biodiversity in ecosystems, species, and individuals leads to greater stability. For example, species with high genetic diversity and many populations that are adapted to a wide variety of conditions are more likely to be able to weather disturbances, disease, and climate change.
What is species diversity?
The species diversity has to do with the existence of many organisms in a given habitat.
What is species diversity?The term species diversity has to do with the different species that can be found in a habitat. We know that a habitat refers to a place where living organisms could be found. There is always diversity in a habitat because they various organisms do make up the food web of the habitat which is the complex feeding relationships that we have in the habitat.
Diversity is the key that sustains the interaction of species in a habitat. The organisms that are found in a habitat can be found in communities and each of the communities in the ecosystem do have individuals that make it up in populations.
Thus, we can see that the diversity is the key to the sustenance of any ecosystem habitat as the organisms in the habitat must be interdependent.
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How do psychiatrists differ from clinical psychologists?
Question 7 options:
Psychiatrists typically can’t prescribe medication.
Clinical psychologists earn a medical degree and become physicians.
Psychiatrists earn a medical degree and become physicians.
Clinical psychologists typically prescribe medication.
Clinical psychologists typically prescribe medication. Option D.
The main difference between the two fields is that psychiatrists are doctors and can prescribe medications. Psychologists usually have a Ph.D. but they have not attended medical school and are not doctors. Clinicians can only evaluate patients, but psychiatrists can and are licensed to prescribe them.
A psychologist may be a good choice if you want to spend time discussing problems and working through them in one-on-one sessions. If you are interested in taking psychiatric medications to alleviate the symptoms of a mental disorder please consult your psychiatrist first. To illustrate the main difference between clinical psychology and counseling psychology the clinical discipline focuses on psychopathology the study of mental disorders. Counseling psychologists on the other hand help patients and clients cope with emotions.
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How are new red blood cells formed?A. They develop by Meiosis.B. They develop by Binary Fission.C. They develop in yellow bone marrow.D. They develop in red bone marrow.
Erythropoiesis is the process to form new red blood cells.
It starts with a stem cell, that divides and differentiates. This process happens in the red bone marrow.
The answer is D.
What concept is essential to understand how the earth-moon-sun system works?
A. Gravity
B. The number of moons around each planet
C. Planetary motion
D. Elliptical orbit
Answer:
C. Planetary motion
Explanation:
planetary motion is the concept that is required to understand how moon sun system works so basically if you want to understand it clearly you have to learn Kepler's laws of planetary motion.
If Earth is moving at a rate of 29.8 km/s, how many mi/hr would that calculate to be?
-Guys this is science, but I didn't see that option-
18.5169 miles per hour is equal to 29.8 kilometers per hour.
Calculation: multiply the kilometers per hour amount by "0.62137119223826," which is a conversion factor.
Therefore, 29.8 kilometers per hour equals 18.5168615287 miles per hour when multiplied by 0.62137119223826.
Simply increase the amount in kilometers per hour by 0.62137119223733 to convert it to miles per hour (the conversion factor).
Consider trying to translate 29.8 km/h into mph. Using the above conversion formula, you will obtain:
29.8 multiplied by 0.62137119223733 to get 18.5169 mph
Calculation: multiply the kilometers per hour amount by "0.62137119223826," which is a conversion factor.
Simply increase the amount in km/h by 0.62137119223733 to convert it to mph (the conversion factor).
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I NEED HELP RN PLSSSS
Yes. Of course
Explanation:Ask the question.I will answer it.What is one criticism of the drive-reduction theory?
Question 12 options:
It doesn’t account for a person’s need for love and acceptance.
It explains too little about a person’s spiritual needs.
It doesn’t explain why a person’s behavior increases discomfort.
It doesn’t put enough emphasis on mental images.
The one criticism of the drive-reduction theory is option C: It doesn’t explain why a person’s behavior increases discomfort.
What kind of behaviors cannot be explained by the drive-reduction theory?The theory of drive reduction are those behaviors are driven by the biological need to preserve homeostasis, or the internal state of equilibrium of the body's systems.
Risky, harmful, or any thrill-seeking behaviors that add to discomfort are not taken into account by theory. Despite the fact that the drive-reduction theory explains why biological behaviors are motivated, Hull believed it might be used to explain "non-biological" behavior (eating, also drinking, and looking for shelter).
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Using the data below, determine which type of moth is best adapted to its environment.
a.
Light moths on light trees.
b.
Light moths on dark trees.
c.
Dark moths on light trees.
d.
Dark moths on dark trees.
Lab Habitats - Lab Assessment; Edgen2020
The best type of moth is best adapted to its environment is dark moths on light trees. Thus, option C is correct.
What is environmental change?
Environmental change has a change or the disturbance of the climate which has most often causes due to the human behavior, the human activity or the natural ecological processes.
Environmental change has been consists many factors, such as the natural disaster, human interferences, or the animal interactions. It has been also included the physical change.
In the environmental change natural systems transform the sun's energy into the living matter and cause changes by cycling material through geological, biological, oceanic and atmospheric processes.
Therefore, The best type of moth is best adapted to its environment is dark moths on light trees. Thus, option C is correct.
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Please write 5 sentences
Answer:
Explanation:
Active Transport- uses ATP to pump molecules AGAINST/UP the concentration gradient. Transport occurs from a low concentration of solute to high concentration of solute. Requires cellular energy.
Passive Transport- Movement of molecules DOWN the concentration gradient. It goes from high to low concentration, in order to maintain equilibrium in the cells. Does not require cellular energy.
Active and passive transport are biological processes that move oxygen, water and nutrients into cells and remove waste products. Active transport requires chemical energy because it is the movement of biochemicals from areas of lower concentration to areas of higher concentration. On the other hand, passive transport moves biochemicals from areas of high concentration to areas of low concentration; so it does not require energy.
There are two types of active transport: primary and secondary. In primary active transport, specialized trans-membrane proteins recognize the presence of a substance that needs to be transported and serve as pumps, powered by the chemical energy ATP, to carry the desired biochemicals across. In secondary active transport, pore-forming proteins form channels in the cell membrane and force the biochemicals across using an electromagnetic gradient. Often, this energy is gained by simultaneously moving another substance down the concentration gradient.
What types and proportions of genotypes and phenotypes do you expect from the cross of a female with white fur with a male with brown fur
Answer: brown-fured individuals
Explanation:
Sickle cell anemia is a recessively inherited blood disease that results from one nucleotide being switched in the hemoglobin gene.
What type of mutation causes sickle cell anemia?
A
B
с
substitution mutation
insertion mutation
deletion mutation
silent mutation
Sickle Cell anemia is a kind of recessively inherited blood disease that results from one kind of nucleotide being switched into the hemoglobin gene. It’s type of ABC substitution mutation.
Point MutationAn autosomal recessive condition known as SCA is brought on by a point mutation in the hemoglobin beta gene (HBB) on chromosome 18. The HBB gene is taken into mutated in sickle cell disease.
One component of hemoglobin can be made using instructions from the HBB gene. Four protein subunits make up hemoglobin; normally, there are two alpha-globin and two beta-globin subunits. The HBB gene contains the instructions needed to produce beta-globin.
An autosomal recessive condition known as SCA is brought on by a point mutation in the hemoglobin beta gene (HBB) on chromosome 18.
A point mutation in the hemoglobin beta gene (HBB), which is located on chromosome 11p15, is the cause of the autosomal recessive condition known as SCA.
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1) Choose whether thyroid or thymus applies to each of the following:
White
Dark red
Shaped like a V
Shaped like a small bean
Answer: The thyroid is a small, butterfly-shaped gland in your neck. Thyroid tests help health care professionals diagnose thyroid diseases such as.
Explanation:
when water is warmed by the sun, it ______
When water is warmed by the sun, the water molecules move faster and evaporates as water vapor .
Evaporation occurs when sunlight warms the surface of the water. Heat from the sun makes the water molecules move faster .
Water from the surface of oceans and other bodies of water is warmed and evaporate as water vapor these moist air goes up and condensed as clouds. Then come back on earth surface in form of precipitation .Sun plays an important role in water cycle by continuously evaporating ocean and sea water in form of water vapor. Global temperatures increase the rate of evaporation worldwide.
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Which of the following partial reinforcement schedules applies a reinforce after a specific number of correct responses?
Question 9 options:
Fixed-ratio schedules
Variable-interval schedules
Variable-ration schedules
Fixed-interval schedules
Fixed-ratio schedule is the partial reinforcement schedule that applies reinforce after a specific number of correct responses.
Reinforcement is a concept used in psychology. It is an action performed upon an individual so as to increase certain behavior on the person. Partial reinforcement is a type of reinforcement that is applied only for certain periods of time and not completely.
Fixed-ratio schedule is the one in which a response in reinforced only after certain number of desired responses are obtained. For example, if a student raises his hand majority of the times to answer the question asked by the teacher, it is possible that the teacher may ask particularly to him after fixed point of time.
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What happens directly after metaphase
A. Prophase
B. Anaphase
C. Telophase
D. Interphase
Answer:
Explanation:
B. Anaphase
Anaphase- is the stage of meiotic or mitotic cell division in which the chromosomes move away from one another to opposite poles of the spindle.
Viruses are not living organisms. Which of the following criteria is most
important in determining whether a virus is living or not living?
A) Viruses do not have chlorophyll.
B) Viruses cannot reproduce themselves.
C) Viruses are not made up of many specialized cells.
D) Viruses contain genetic material,
Viruses are not living organisms because they are not made up of many specialized cells.
Why are viruses not considered as living organisms?Because they are not formed of cells, viruses cannot maintain a steady state, develop, or generate their own energy. Viruses are more like robots than actual living things, even though they do replicate and adapt to their surroundings. They are not cells, lack cytoplasm or cellular organelles, do not have their own metabolism, and must therefore replicate via the metabolic machinery of the host cell. These traits make them nonliving. Most significantly, viruses cannot produce ATP, which is how they differ from biological things. Additionally, viruses lack the tools required for translation.
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Which explanations for why we dream makes the most sense to you? How well does it explain your own dreams?
Explanations for why we dream make the most sense to you are dreams are frequently advanced as a storage mechanism for significant memories and lessons learned, a way to purge unimportant memories, and a way to organize jumbled feelings and complex thoughts.
According to the activation-synthesis theory, dreams consist of a collection of random events that come to the sleeping mind and are put together in a meaningful fashion when we wake. In this way, dreams might spur fresh insights, practical suggestions, or inspirational epiphanies in the dreamer's waking life. Most specialists agree that dreams help us relax, mend, and rejuvenate our bodies. Others argue that humans dream for psychological purposes, including stress relief, reevaluating the day's events, and giving pent-up emotions a release.
According to the continuity theory, a person's conscious experiences are reflected in their dreams, which serve as a reflection of their real life. 8 Dreams manifest as a patchwork of memory snippets rather than a simple replica of waking reality.
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An animal cell (left) and a plant cell (right) are shown.
Which two cell parts are most likely found in both types of cell?
vacuole and centriole lysosome
What is a source of air pollution?Choose all correct answers.factoriesburning fossil fuelscarsbicycles
From the listed options the ones that are sources of air polluation are:
Factories, Cars and burning fuels because of the chemicals compounds that they emit in the air burning fossil fuels.
How much has the average global temperature increased since 1860?I need help with this practice * ^
The average increase in global temperature since 1860 was 1.4 degrees Celsius. The warming that has been seen is caused by greenhouse gas emissions from human activity.
The correct answer is D
What a greenhouse gas is in simple terms.Gases in the earth's atmosphere called greenhouse gases (GHGs) trap heat. The earth's surface is warmed during the day by the sun's rays passing through the atmosphere. The earth's surface cools at night, releasing heat into the atmosphere once more. The atmosphere's greenhouse gases do, however, trap some of the heat.
What causes greenhouse gases to be produced most often?Almost majority of the rise in atmospheric greenhouse gases over the past 150 years can be attributed to human activity. Fossil fuel combustion for transportation, heating, and electricity generation accounts for the majority of greenhouse gas emissions caused by human activity in the United States.
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Which era saw the emergence of major geologic faults and subduction zones?
A. Cenozoic
B. Mesozoic
C. Cretaceous
D. Cambrian
The Mesozoic era saw the emergence of major geologic faults and subduction zones.
What is the Mesozoic era?The Mesozoic Era also known as the Age of Reptiles and the Age of Conifers, is the second-to-last era of Earth's geological history, lasting from about 252 to 66 million years ago and comprising the Triassic, Jurassic and Cretaceous Periods.
During the Mesozoic era or life form diversified rapidly and giant reptiles, dinosaurs and other monstrous beasts roamed the Earth.
The Mesozoic era is divided up into the Triassic, Jurassic, and Cretaceous periods.
In conclusion, the Mesozoic era was known as the era that marked the extinction of dinosaur.
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According to social-cognitive theory, if a woman sees that her friend improved her job performance by taking classes at a local college, she’s likely to try to take some classes to elevate her job skills too. What is this behavior called?
Question 11 options:
Learned cognition
Observational learning
Cognitive dissonance
Personal variables
The behavior is called observational learning.
What is observational learning?Observational learning can be described as the process of learning by watching the behaviors of others. The targeted behavior to which an individual want to emulate is watched, memorized, and then mimicked.
Social-cognitive theory is a theoretical perspective in which learning by observing others is the focus or the main point of study.
If a woman sees that her friend improved her job performance by taking classes at a local college, she’s likely to try to take some classes to elevate her job skills too. This behavior can be likened as observational learning.
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