If a physician tells you that Staphylococcus aureus can cause an asymptomatic infection, what effect will that infection have on a patient?

Answer:

Water and sunlight are the experimental constants.

Explanation:

As we know, scientific experiments are composed of variables (dependent and independent) that are factors that researchers can manipulate to provoke a reaction that allows them to observe results. What few know is that in addition to variables, experiments are composed of factors called "constants". Experimental constants are factors that are maintained in the same way throughout the experiment without being manipulated. An example of this can be seen in the question above, where the researcher used as constant the amount of water supplied to plants and the amount of sunlight.

D) In the past, accidental discoveries have played a major role in scientific progress.

Scientists never assume that existing scientific theories are perfect, although they explain a great variety of facts. You must be ready for new findings, which challenge accepted ideas. Unintentional findings have played an important role in scientific progress in the past. If all the results that were contrary to accepted theories were ignored, science progress would be severely limited.

Answer:

D

Explanation:

Its the correct answer on my usatestprep

An intrusive igneous body is C. a batholith because it is the largest of all.

Answer:

Yes it would be B.) fossil evidence

Explanation:

It was found that there was similar type of genetic characteristics of animals living in different parts of the world. So therefore it would be fossil evidence. Have a nice day!

White blood cells, also called leukocytes, are an important part of the immune system. These cells help fight infections by attacking bacteria, viruses, and germs that invade the body. White blood cells originate in the bone marrow but circulate throughout the bloodstream.

The given question says that a student has constructed a model of cellular transport using fences and several gates.  

This model can be used to demonstrate the cellular transport.

The gates of the fences can be supposed as the protein pumps and the other fence demonstrates the lipid bilayer.  

Let’s suppose in the fence, there are many cattles, and outside, there are less cattles, but the student open the gate and bring more cattles inside the fence. In this case, the transport of the cattles is similar to the active transport of the molecules using protein pumps. At cellular level, the energy for the active transport is provided by ATP molecules.

Now, let’s say, the student wants to feed the cattles with some nutrition rich food, which can help in maintaining the health of the cattles. The student fills his car with the cattle food and he enters inside the fence through gates. In this case, the food was not present in the fence, but was abundant in the outside environment, so, the diffusion would occur. But food cannot come self, without help of others, so, the movement is facilitated by the car, as it is done by the carrier proteins. Hence, it is an example of facilitated diffusion.  

PCD would make concieving children difficult because the fallopian tubes cannot push an egg out in order for the sperm to fertilize it

Answer:

Conclusions can’t be trusted.

Experiment may not be repeatable.

Data may be incorrect.

Data may not reflect actual situation.

Data may not answer question asked.

Results may be biased.

Explanation:

edg 2020 answers :)

Natural gas is nonrenewable once it is gone it cannot be used anymore.

Some examples of nonrenewable resources are: fossil fuels, oil, natural gas, and coal and nuclear energy.

1. nervous

2. muscular

3. skeletal

Jenna's ability to catch her falling pencil quickly is made possible by her nervous system's fast reaction time.

In the scenario described, Jenna's ability to quickly catch her falling pencil is due to her nervous system's fast reaction time. The nervous system is responsible for recognizing the stimulus (falling pencil) and sending signals to activate the necessary components (muscles) to catch it.

The nervous system works through the specialized cells called neurons, which transmit electrical signals. When the pencil falls, the sensory neurons in Jenna's hand and arm detect the movement and send signals to the brain. The brain then processes this information and sends signals through motor neurons to the muscles in Jenna's hand and arm, allowing her to reach down and catch the pencil in time.

The structure that is present in both plant and bacteria is the Cell Wall

Cell wall presents outside the plasma membranes to protect the cells. It is only present in plants bacteria. It is The cell wall is As made up of cellulose, it gives support and flexibility to cells. In bacteria, it plays an important role to protect it from the external stress and gives specific shape. In both organisms, The cell wall also contains pores to enable the movement of food particles in or out of the cells. If it is not present in their outer surfaces, the much entrance of particles or other related compounds may lead to cell brust.

Answer:

true

Explanation:

edge 2020

the correct answer is

C) cell membrane

Not to entirely sure but it looks like A to me

Answer:

The statement that can be made after the analysis of the information is:

c) we have evidence about particular abilities from specializing cells. So, this is the correct option.

Explanation:

ok, to understand this we need to analyze the options.

a) this sounds good but the information doesn't say anything about structures and functionality relation.

b) the information provided can't make us say if it is general or only for humans, therefore incorrect.

We have two left and we are talking about specialized cells, so one of these might be the one.

c)

d) we don't have information about tissues, so this is incorrect.

the two lower GI system procedures that involve a endoscope is the colon, or rectum. They are done to diagnose or treat any irregularities or diseases

The devices that are used to examine GI tract

As the name indicates, it is the examination of the colon (the lowest portion of GIT). It allows the examiner to view the whole large intestine. It can be done for the screening of colon cancer, To know the cause of changes in bowel habits, weight loss,  pain,  bleeding,  GIT ulcers,  tissue inflammation,  constipation or diarrhoea.

Sigmoidoscopy is a procedure that helps the doctor to view inside of a sigmoid portion of the colon because sigmoid colon sometimes requires closed inspection. Sigmoidoscopy is done to check any abnormal cell growth,  GIT ulcers, polyps, abdominal pain,  bleeding,  constipation or diarrhoea.

Answer:

The bottom of the pyramid is made up of plants and other organisms that perform photosynthesis. Photosynthesis transforms energy from the Sun into usable energy for living things. An ecosystem needs to have more of these organisms than any other organism because they provide energy for the entire ecosystem.

Explanation:

answer from Plato

This trophic pyramid shows different level of energy for different type of organism present at different trophic level.

The bottom of the pyramid is made up of photosynthesis in  plants and other organisms. Photosynthesis converts solar energy into useful energy for living organisms. Because they generate energy for the entire ecosystem, an ecosystem needs more of these organisms than any other.

The producers, or green plants, are found on the first and lowest level. The second-level organisms, herbivores, or plant eaters, consume the plants or their products. Primary carnivores, or meat eaters, devour herbivores at the third level, and secondary carnivores eat primary carnivores at the fourth level.

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Amoebas are single-celled organisms, which means that they are composed of just one cell. Each amoeba is a cell capable of performing all living functions by itself. They can reproduce asexually. They are protozoans with no fixed shape. Most have no hard parts and look like blobs of jelly.

The right option is d) bubbles

The production of bubbles when baking soda mixes with an acid such as vinegar is the observation that indicated a chemical property of the baking soda.

Baking soda (also known as sodium bicarbonate) is a nonflammable, white crystalline powder. Baking soda is odorless, and alkaline. Baking soda reacts with vinegar (acetic acid) to produce carbon dioxide (a gas), water, sodium ion and acetate ion. Baking soda is used for many purposes such as; as an antacid for treating indigestion, for baking, in fire extinguishers, as a water softener, as a pesticide, and to remove dirts from materials.

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Ans.

G1 (or gap 1) is first stage of cell cycle of cell division in eukaryotes. During G1 phase, cell starts to synthesize mRNA (messenger RNA) and protein molecules, which are necessary for DNA replication in next stage and other processes. At the end of G1 stage, cell moves into S-phase of cell cycle, where DNA replication takes place.

Before entering the S-phase, cell's nutritional content and DNA integrity is checked. If cells in G1 show DNA errors or damaged DNA  (such as breaks in DNA strands), it will lead to problems as 'it will result into formation of daughter cells with damaged or mutated DNA, if not gets repaired.'

For G1-phase, one way mistakes during the cell cycle could result in problem is cell doesn’t have a sufficient amount of proteins or other raw materials for the replication of DNA. This condition results in formation of mutated daughter cell.

Further Explanation:

The cell cycle refers to an ordered flow of events which includes cell growth as well as cellular division. This cycle produces two new daughter cells. The cycle starts with interphase in this the cell mature and replicates its own DNA or deoxyribonucleic acid. The interphase begins with:

The second stage of a cell cycle is the mitosis or M phase. Chromosomal abnormalities can occur during metaphase of meiosis. It would lead to enuploidy or polyploidy, due to unequal division of chromosomes. Mitotic phase refers to a multiphase process in this the chromosomes are aligned, segregated, and moved into the two new daughter cells which are identical to each other.

Learn more:

Answer Details:

Grade: High School

Subject: Biology

Chapter: Cell Cycle

Keywords:

Mitosis, meiosis, cell division, anaphase, telophase, cytokinesis, prophase, metaphase, segregation, chromosome.  

Activation energy is the minimum quantity of energy that the reacting species must possess in order to undergo a specified reaction.

So the answer : it is the required to form or break the bonds of reactant molecules that results in a chemical reaction.

Answer:

C.) the energy required to form or break the bonds of reactant molecules

Explanation:

Answer:

mitosis - cytokinesis- cell differentiation

Explanation:

The processes responsible for the development of this embryo, with the development of distinct organs and organ systems is mitosis - cytokinesis - cell differentiation. Cells continue to divide, but after several days, the cells begin to differentiate and activate specific proteins that enable cells to fulfill specific functions. Cell differentiation must take place before organ formation.

MY answer is correct, because I just took this test! Your welcome

Answer:

B) mitosis - cytokinesis- cell differentiation

Explanation:

Your answer is probably ether A.Dissolving salt in water. or C.Burning a piece of wood.

We have that The one from the options that is an example of a chemical change

Burning a piece of wood

Option C

From the question we are told

Which of these is an example of a chemical change?

A.Dissolving salt in water

B.Melting Ice

C.Burning a piece of wood

D.Breaking a tree branch

Generally

chemical change is likened to a change that is irreversible i.e the process cant be reversed to get its original state before change

Therefore

The one from the options that is an example of a chemical change

Burning a piece of wood

Option C

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Hello

The answer is option A

The most likely result is that the concentration of hydrogen ions (H⁺) will increase. Option A is correct.

Hydrochloric acid is a strong acid, which means that it dissociates completely in water to form hydrogen ions and chloride ions. When the student adds 10 mL of 5% hydrochloric acid solution to 100 mL of a non-buffered, colorless solution of sugar, the hydrogen ions from the acid will be added to the solution.

This will increase the concentration of hydrogen ions in the solution, which will lower the pH.The pH scale is a measure of the acidity or alkalinity of a solution. A pH of 7 is neutral, a pH below 7 is acidic, and a pH above 7 is alkaline. The lower the pH, the more acidic the solution. Option A is correct.

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The correct answer is A. The snake population will decrease rapidly and the grass population will increase rapidly.

Explanation:

In an ecosystem, different organisms depend on each other for food and nutrients, in the case presented it is expected the rabbits rely on the grass to feed, the snakes hunt the rabbits and finally, the hawks hunt the snakes creating a food chain. This also implies if the population of one organism is affected all the other organisms will also be affected.

According to this, in the case of the population of rabbits decreasing it is expected the grass population increases because there are not enough rabbits to feed on grass and in the same way as there are not enough rabbits for snakes to feed which will decrease the snake population. Thus, the effect, in this case, is a decrease in the snake population and an increase in grass population (Option A).

Answer:

B

Explanation:

The atoms that started out in hydrogen peroxide molecules are rearranged to form water molecules.

In chemical reactions, atoms are rearranged, not created or destroyed. This conforms to the Law of Conservation of Mass. An example is the reaction of hydrogen and oxygen to form water.

In chemical reactions, atoms are rearranged. They are not created or destroyed. This concept is based on the Law of Conservation of Mass which states that matter cannot be created or destroyed. Therefore, during a chemical reaction, the atoms of the initial reactants reorganize themselves to form the end products, but no atom is created or lost.

For example, if we have a chemical reaction of hydrogen and oxygen forming water (2H2 + O2 -> 2H2O), the atoms are rearranged such that the 4 hydrogen atoms and 2 oxygen atoms from the reactants end up as 2 water molecules in the product.

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