Two students were testing the amount of fertilizer that would best promote the growth of tomato plants in a garden. Which of the following could be an unavoidable source of experimental error?

Answers

Answer 1
the ingredients of the fertilizer. 


Related Questions

The endocrine system responds to input from the nervous system, particularly from the ____.

Answers

Thyroid gland T3 ,T 4


which statement applies to plants, animals, and bacteria in relation to glucose?

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they all need glucose, A tree makes glucose using the suns energy, and a mouse(the animal) gets glucose by eating other living things. Its energy must be transferred to molecules of ATP.

Hope that helps you

Which element is present in all amino acids, but not necessarily in fats or carbohydrates?

A. Carbon
B. Nitrogen
C. Oxygen
D. Hydrogen

Answers

The answer is B.Nitrogen

A basic amino group (NH2), an acidic carboxyl group (COOH), and an organic R group (or side chain) that is specific to each amino acid make up an amino acid, an organic molecule. Therefore, option (B) nitrogen is correct.

What is amino acids  ?

Organic substances known as amino acids have both amino and carboxylic acid functional groups. Alpha-amino acids, which make up proteins, are by far the most significant of the hundreds of amino acids found in nature. In the genetic code, only 22 alpha amino acids are present.

Histidine, isoleucine, leucine, lysine, methionine, phenylalanine, threonine, tryptophan, and valine are the necessary amino acids. Alanine, asparagine, aspartic acid, glutamic acid, and serine are the non-essential amino acids.

Carbohydrates and fats consists of carbon, hydrogen and oxygen. Therefore, Option (B) is correct. Nitrogen is present in all amino acids but not  necessarily in fats or carbohydrates.

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A upright sprinkler head is different from a pendant sprinkler head because

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" The basic difference between fire-preventive upright sprinklers and pendant sprinklers is the position each takes on a water pipe. An upright sprinkler, as its name implies, stands atop the pipeline, whereas a pendant type hangs from the pipe. These two types of sprinklers, however, bear more slight differences than their opposing operating arrangement. "

Hope this helps ^-^

Answer:

The difference between preventive vertical fire sprinklers and pendant sprinklers is the position each of these sprinklers takes in the water line.

Explanation:

A vertical sprinkler is located on the pipe. Due to their configuration, vertical and pendant sprinklers are classified as distribution sprinklers. Both sprinklers use a design in which they spray water in an equal pattern from their positions. On the other hand, a vertical sprinkler has a water deflector on top that allows water to shoot upward. The pendant type hangs from a pipe, and its water baffle is placed at the bottom, but both sprinklers have the same circular pattern.

What is the maximum amount of time allowed by the fda food code that time/temperature control foods can be kept in the temperature danger zone?

Answers

The maximum amount of time allowed by the FDA food code that time/temperature control foods can be kept in the temperature danger zone is less than 4 hours.

Final answer:

According to the FDA food code, foods should not be in the temperature danger zone (40°F to 140°F) for more than two hours to prevent rapid bacterial growth and foodborne illness.

Explanation:

The maximum amount of time allowed by the FDA food code that time/temperature control foods can be kept in the temperature danger zone is more than two hours. The temperature danger zone is defined as the range between 40°F and 140°F, wherein bacteria grow rapidly. Foods that remain within this range for more than two hours may become dangerous to eat due to rapid bacterial growth. Therefore, it is crucial to adhere to this guideline to prevent foodborne illness.

Explain why carbon is essential to all known living things on earth?

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Carbon is a key compound in all life on earth. Complex molecules (such as oxygen, hydrogen, and nitrogen) are carbon bonded with other elements. 

When assessing orientation, the nurse completes the assessment by asking which questions? select all that apply. "can you tell me where you are?" "would you count from 1 to 10 backward, please?" "what is your name?" "what day of the week is it?" "what did you eat for breakfast today?" submit answer?

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Questions like "can you tell me where you are?, what is your name? what day of the week is it?, and what did you eat for breakfast today?" should be included. They are all significant in determining   a patient’s  cognitive status.

Neurons found in the center of the spinal cord that receive information from the sensory neurons and send commands to the muscles through the motor neurons are called ________.

Answers

Neurons found in the center of the spinal cord that receive information from the sensory neurons and send commands to the muscles through the motor neurons are called INTERNEURONS.

What would be the impact on the nitrogen cycle if there were a decrease in decomposition in a given ecosystem?

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Because decomposition helps create nitrogen, a lack of decomposition would result in a lack of nitrogen being created.

A decrease in the decomposition rate in an ecosystem will impact the nitrogen cycle such that the amount of nitrogen available in the soil decreases.

The nitrogen cycle

Decomposition of dead organic matters in ecosystems releases nitrogen into the soil in the form of ammonium compounds.

The more the decomposition activities in an ecosystem, the more the amount of nitrogenous compounds available in the soil.

Thus, a decreased decomposition rate in an ecosystem will reduce the amount of nitrogen available in the nitrogen cycle, specifically in the soil.

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What is the ability of a cell membrane to allow materials to pass through it called?

Answers

permeability is the answer
hope it helps
The answer would be 
permeability.
Hope this helps! :)

Which topical agents are used to clean highly colonized wounds? select all that apply?

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The topical agents that are helpful in cleaning highly colonized wounds are the following; sodium hypochlorite, acetic acid and hydrogen peroxide. These topical agents are helpful in cleansing the wound and will likely help in healing the wound as it does not damage the tissues.

Many enzymes in both prokaryotic and eukaryotic cells are compartmentalized within organelles.
a. True
b. False

Answers

B) False Because they are not compartmentalized within organelles.

The S-P interval of seismic waves recorded at a seismometer is 8 minutes. Approximately how far away is the earthquake’s epicenter from the seismometer? [equation: (S-P interval) = 0.00146 (distance to epicenter)]
8 km
550 km
5,500 km
less than 1 km

Answers

i remember this from 8 grade here are the answer for 




1.) A 
2.) C 
3.) C

Answer:

5,500

Explanation:

The number of kilocalories provided by a food that contains 30g of carbohydrate is

Answers

Each gram of carbohydrate yields 4 kilocalories .

30g x 4 = 120 Kilocalories

Oxidized ldl in the blood is picked up by the ________. b100 receptor scavenger pathway b48 receptor no cell can pick up oxidized ldl

Answers

Low-Density Lipoproteins (LDL) is broken down to protein and free cholesterol. Used for maintaining cell membrane or synthesizing special compounds (estrogen, testosterone, vitamin). Oxidized LDL in the blood is picked up by the Scavenger pathway for Cholesterol Uptake. The WBC sense oxidized LDL, digest and overcome it which avoids it from re-entering the blood stream which able to pick up vast amounts of LDL.

The nurse should suspect that a client who had a recent myocardial infarction is experiencing denial when the client:

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The nurse should suspect that a client who had a recent myocardial infarction is experiencing denial when the client= attempts to minimize the illness

Consider the feedback loop that cools the body when it is too warm

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The feedback loop that cools the body when it is warm is a negative feedback loop.
When the hypothalamus sense that the body temperature is too high, it will sends a signal to the skin which will constrict in response thus reducing heat loss. As a result of this muscles will begin to shiver and generate heat, this will increase the body temperature and the signal from the hypothalamus will be reduced.
The stimulus that initiated this process is the hypothalamus while the response is the constriction of the skin and the shivering of the muscles.

Plant cells _________ have organelles that conduct photosynthesis. Photosynthesis uses the energy from sunlight to create food for the plant

Answers

chloroplasts is blank should be

Answer:

The correct answer will be-photosynthetic organelle called chloroplast

Explanation:

The plants are known as the photoautotrophs as they utilize the sunlight to synthesize the food molecule called glucose. The process of synthesis is known as photosynthesis.

The photosynthesis reaction begins with the absorption of the sunlight from the sun using a special organelle called chloroplast. The chloroplast contains chlorophyll pigment in the photosystem molecules to capture the light energy at 700 nm and 680 nm.

Thus, -photosynthetic organelle called chloroplast is the correct answer.

Which is likely to be the most important contribution of genetic engineering to the practice of selective breeding

Answers

the most important contribution of genetic engineering to the practice of selective breeding is developing crops that are more resistant to attack of pests.

A nurse is caring for a 5-year-old boy with end-stage acquired immunodeficiency syndrome (aids). the child confides that he is ready to go to heaven and see his grandpa. the nurse knows that the child's parents aren't comfortable with the idea of discontinuing treatment. what should she do?

Answers

Since the child is not yet at the legal age to make the decision in terms of medical conditions and treatment, it is only legal that the one responsible for the decision is the legal guardian of the child such as the parents. If the parents wants to continue the treatment, then the nurse should follow the parents.

What is the difference between a longitudinal section and a cross section?

Answers

Answer: See Explanation

Explanation:

Cross sectional study is form a class of research methods that involve observation of all of a population, or a representative subset, at a defined time. Longitudinal study is a correlation research study that involves repeated observations of the same items over long periods of time — often many decades. It is a type of observational study.

What two or more tissues join together together for a specific function they form a/an ________________. examples include_____________________,_________________and_____________?

Answers

they form an organ.
examples are the kidney, liver, heart, onion bulb in plant.
Final answer:

When two or more tissues join together for a specific function, they form an organ. Examples include the heart, liver, and lungs.

Explanation:

When two or more tissues join together for a specific function, they form an organ. Examples include the heart, which is made up of cardiac muscle tissue, connective tissue, and nerve tissue; the liver, which is made up of various types of tissues including hepatocytes and blood vessels; and the lungs, which are made up of respiratory epithelium, smooth muscle, and connective tissue.

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A red-tailed hawk swoops down and captures a young rabbit feeding on dandelions growing in a park. the relationship between the hawk and the rabbit represents __________.

Answers

The hawk, a carnivore (animal meat-eater), is predating on the rabbit, an herbivore (plant-eater). So the hawk can be seen as the predator and the rabbit as the prey.
But another type of relationship important in Ecology is consumers. So producers are the plants that feed a food web. That makes the rabbits the primary consumers (herbivores) of these plants. Then the hawks become the secondary consumers (carnivores) of the primary consumers, by eating the herbivores.
Hope that this makes sense!

Before a scientific theory is accepted and supported, it has A) been tested by only one scientist. B) been published in scientific journals. C) been tested many times by different scientists. D) been approved by the International Committee of Scientists.

Answers

C- been tested many different times by different scientist

Answer:

The correct answer will be option-C.

Explanation:

A scientific theory is a well-substantiated idea which explains any natural phenomenon in depth. The theory is the elaborate and explanatory form of a hypothesis which has to prove through experiments.

The theories are formed by the use of many earlier theories which explains the same natural issue like Theory of relativity by Einstein. Before the theory is accepted it must be supported by the experiments of the work of another scientist as well as earlier theories. It should be tested with other scientists working on the same issue.

Thus, Option-C is the correct answer.

What is life expectancy? question 4 options: 1) maximum life span that an individual of a given species could reach 2) number of individuals in a population that survive in a given year 3) number of years an individual of a certain age will probably live 4) probability that an individual will survive infancy 5) all of these are descriptions of life expectancy?

Answers

1) maximum life span that an individual of a given species could reach

The maximum life span that an individual of a given species could reach is referred to as life expectancy. The correct option is 1.

What is most common life expectancy?

Life expectancy is a measurable statistic of how long an organism is expected to live based on its birth year, current age, and other demographic factors.

The world's current life expectancy in 2016 was 72.0 years, 74.2 years for females, and 69.8 years for males, according to the World Health Organization (WHO).

Thus, the correct option is 1.

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Which of these includes sugars, starches, and cellulose?

Answers

Carbohydrates. Carbohydrates are macromolecules made up of carbon, hydrogen and oxygen. Sugars, starches and celluloses are made of these elements and hence belong to carbohydrates. cellulose is found only in plant cells while starches and sugars are found in animal and plant cells.
Final answer:

Polysaccharides, which include starch, glycogen, and cellulose, are complex carbohydrates important for energy storage in plants and animals (starch and glycogen) and providing structural support in plants (cellulose).

Explanation:

The substances that include sugars, starches, and cellulose are known as polysaccharides, which are complex carbohydrates consisting of long chains of monosaccharide units. Cellulose is a kind of polysaccharide that forms an integral part of plant cell walls and is used in the production of materials like paper and cardboard. Starch is another type of polysaccharide that plants use to store energy, and it's commonly found in foods like potatoes. Glycogen, also a polysaccharide, serves as the main form of energy storage in animals and fungi.

These polysaccharides are critically important to both plant and animal life. Cellulose provides structural integrity to plant cells, thereby contributing to the rigidity of plants. Starch and glycogen function as energy reserves in plants and animals, respectively, and play vital roles in maintaining energy homeostasis. Although all composed of glucose molecules, starch, glycogen, and cellulose differ structurally, leading to their unique properties and uses in living organisms.

The instructions for making proteins come originally from
A) RNA.
B) ribosomes.
C) DNA.
D) amino acids.

Answers

It originally comes from C. DNA

Hope this helps!

Answer: C. DNA

Explanation:

DNA contains the genes that codify for all of the proteins in the body. DNA is translated into RNA, which exits the nuclei of the cell and enters the cytoplasm. In the cytoplasm RNA is transcripted into proteins by the ribosomes. Ribosomes can be found by themselves or on the endoplasmatic reticulum.

Using data from the table above, select the best explanation for why that cell will be able to eliminate waste most efficiently?\

Answers

The correct option is this: CELL 2 WILL THE ONE THAT WILL BE ABLE TO ELIMINATE WASTES MOST EFFICIENTLY. This is because it has the highest surface area to volume ratio which facilitates the exchange of materials between a cell and its environment.
The rate of diffusion of materials into and out of the cell depends on the surface area to volume ratio of the cell. The higher this ratio, the higher the rate of diffusion.

If a formation in the dna of an organism results in the replacement of an amino acid containing a polar r group with another amino acid containing a nonpolar r group how might the structure of the protein be affected? address the impact on all levels of the protein structure in your answer

Answers

The structure of the protein will be affected if the protein is hydrophillic in nature while the R group is hydrophobic in nature.
The tertiary structure of a protein is determined by the interaction and bond of the R group within a protein. Thus, if a mutation occur at the R group side chain the tertiary structure of the protein will be affected.

Water is __________ when a nucleotide is added to the end of a dna strand.

Answers

Water is ELIMINATED when a nucleotide is added to the end of a DNA strand.
In the DNA molecule, the phosphodiester bond is the force that joined the nucleotides in the DNA together. Each time a nucleotide is attached to the DNA strand, a water molecule is given off through a process known as dehydration synthesis.

Answer;

-Produced

Water is produced when a nucleotide is added to the end of a DNA strand.

Explanation;

Nucleotide is a monomer in nucleic acids, consisting of a five-carbon sugar covalently bonded to a nitrogenous base and (1-3) phosphate groups.

-The polymerization of nucleotides is a condensation reaction. condensation reaction is the chemical reaction in which two or more molecules combine to produce a simple molecule that happens in nucleic acid synthesis. (like hydrolysis but not water product). For a covalent bond to form between the nucleotide and DNA strand, an OH from the nucleotide and an H from the strand of DNA combine to form water.


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