Models are useful to scientists, but they can have drawbacks. For example, models can oversimplify a process or show only parts of the structures involved in the process. List two pros and two cons of the model you created in part A.

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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The one criticism of the drive-reduction theory is option C: It doesn’t explain why a person’s behavior increases discomfort.

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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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.  

An 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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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.

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).

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.

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The species diversity has to do with the existence of many organisms in a given habitat.

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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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

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.

Viruses are not living organisms because they are not made up of many specialized cells.

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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.

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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The behavior is called 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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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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Answer: brown-fured individuals

Explanation:

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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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.

The approach used in the given question for problem solving to provide the answer is algorithm.

Problem solving is the ability of the brain to find the solutions from simple to complex situations or questions. Brain is the most complex and largest organ of humans that functions to serves all the cognitive functions like problem solving, thinking, decision making, stimulus generation, etc.

Algorithm is the type of problem solving ability in which the person follows a hierarchy of steps in order to reach the accurate solution to the given problem. It is an ensured way to reach to the solution.

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Answer:

Heuristics

Explanation:

Answer:

A pyramid is a polyhedron that has a base, which can be any polygon, and three or more triangular faces that meet at a point called the apex. These triangular sides are sometimes called the lateral faces to distinguish them from the base.

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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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Answer:

Flowering plants Angiosperms.

Explanation:

vacuole and centriole lysosome

Answer: The resting potential is determined by concentration gradients of ions across the membrane and by membrane permeability to each type of ion.

Explanation:

Answer: The thyroid is a small, butterfly-shaped gland in your neck. Thyroid tests help health care professionals diagnose thyroid diseases such as.

Explanation:

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.

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.

Yes. Of course

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

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.

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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