sientific method hypothesis
A refrigerator thermometer is read ten times and registers degrees Celsius as:
39.1, 39.4, 39.1, 39.2, 39.1, 39.2, 39.1, 39.1, 39.4, and 39.1. However, the real
temperature inside the refrigerator is 37 degrees C. Is this an example of
precision, accurate, neither, both or neither, Make a selection and explain.
Answer:
Precise, but not accurate
Explanation:
First, let’s define accuracy and precision.
Accuracy: how close you are to the actual value
Precision: how close the measurements are to each other.
Let’s examine the data given:
39.1, 39.4, 39.1, 39.2, 39.1, 39.2, 39.1, 39.1, 39.4, 39.1
Each number is very close to 39, within 0.1 to 0.4.
The actual temperature of the refrigerator is 37 degrees. Each measurement is about 2 away from 37.
Since the measurements are close to each other, but far from the true value, we can say this is precise but not accurate.
Someone diagnosed with meningitis has inflamed membranes that cover and protect the brain and spinal cord. Meningitis is a result of pathogenic gram-negative bacteria that cause extreme infections when their bacterial cell wall dies and lipopolysaccharide (a lipid and polysaccharide) is released. The lipopolysaccharide is an example of a/an
Answer: ENDOTOXIN
Explanation: Meningitis is a nervous system disorder that occurs when there is an infection and inflammation of the meninges,these meninges are the membranes that cover the brain and the spinal cord,they are the pia mater, dura mater,and the arachnoid mater.
This infection and inflammation of the meninges is causes by inversion of microorganism, bacteria precisely,when these bacteria that are gram negative invade the meninges,the cell wall of the bacteria dies off exposing the cellular contents, this exposure introduces a toxin known as LIPOPOLYSACCHARIDE directly in to the meninges which disrupts the normal functioning of the meninges, infection further sets in and inflammation is triggered as well.
HELPPP!!!! ME!!!! PLEASE!!!!
Answer:
If plants are grown in soil containing worms, then both the plants and worms will benefit from each other because worms break down the organic matter around the dirt, fertilizing the dirt which helps the plants grow.
difference between paw paw and tomato
Answer:
❥ Ripe pawpaws give off a wonderful fruity aroma. If the pawpaw does change color, it will likely turn a lighter shade of green, possibly with some yellowing. A more reliable indicator is feeling. The fruit will begin to feel softer, much as a peach or avocado.
❥ Your ripe tomato will give slightly to the touch. It shouldn't be soft but rather a little tender. Because tomatoes ripen from the inside out, this is a good indicator that it's ready.
Why plant cell does not burst even if placed constantly in hypotonic solution?
Answer:
Explanation:
It's simply law of osmosis.
In osmosis solvent particles move from lower solute concentration to higher solute concentration until both the solution acquire the same concentration. So when a plant cell is kept in hypertonic solution (having more solute concentration), the solvent particles move outside the cell causing it to shrink, which is also known as plasmolysis of cell.
When a plant cell is kept in hypotonic solution (having less solute concentration), the solvent particles move inside the cell causing it to swell up which is also known as deplasmolysis. But due to the presence of cell wall, plant cell can not burst. Cell wall is a very stratchable boundary made up of cellulose mainly which makes the plant cell non-collapsable (but animal cells can burst in hypotonic solution due to absence of cell wall)
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The general trend that is shown on the graph is that average surface temperature on Earth
o has fallen by 0.4°C since 1880.
o has risen by nearly 1°C since 1880.
o dropped a fraction of a degree in 2000.
o rose sharply betuneen the tears 1900 and 1920
Answer:
B
Explanation:
Answer: The answer is B. Has risen by nearly 1 degree C since 1880
Explanation: Edge2021
Viruses that are sitting in a droplet of water on a desk are...
1 dividing very rapidlly and becoming more dangerous
2 able to live for 3 days and then die
3in a dormant replication stage
4 inactive, they need a cell to reproduce
The virus that is sitting in a droplet of water on a desk is inactive, and they need a living cell to reproduce themselves because they do not have the machinery to reproduce. Thus, the correct option is D.
Viruses can be defined as the acellular organisms. These are very small organisms which does not have any organelles. The viruses contain only the genetic material in the form of DNA or RNA and a protein coat which surrounds the genetic material.
Viruses are found to be pathogenic in nature. These can infect many organisms such as plants, bacteria, and animals. Viruses cannot divide outside a living body as they do not have the machinery to reproduce and thus requires a cell to divide. These are inactive outside the living body.
Therefore, the correct option is D.
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How do mitosis and meiosis differ among humans, chickens, and alligators?
Answer:
Mitosis- produce two identical somatic daughter cells
Meiosis- produce four genetically different reproductive daughter cells.
Explanation:
Mitosis and meiosis are the two major cellular divisions in multicellular organisms. However, they differ in series of aspects.
Mitosis is a cell division that involves the production of two daughter cells which are genetically identical to the parent cell. Mitosis is used to multiply somatic cells, hence, it is called multiplication division. Mitotic process is the same in humans, alligators and chickens.
Meiosis, contrarily, is a cell division that involves the production of four daughter cells which are genetically different from the parent cell. Meiosis occurs in a two step division process in order to produce sex cells or gametes with a reduced number of chromosomes. Hence, meiosis is called reduction division. Note that, meiosis only occurs in reproductive cells. Meiotic process is likewise in humans, alligators and chickens as long as they reproduce sexually via gametes.
Mitosis and meiosis differ among humans, chickens and alligators because of their different functions and the presence of chromosomes.
Cell DivisionMitosis and meiosis have two kinds of cell division.
In humans, mitosis is a single cell that splits into two exact daughter cells.
Meiosis creates egg and sperm cells.
In animals, meiosis creates gametes directly, and mitosis happens in somatic cells.
Meiosis in the chicken embryo is formed late in embryogenesis. Meiotic germ cells are rather noticeable only in female gonads.
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In comparing stop-transfer and internal start-transfer sequences in proteins, it can be said that __________. In comparing stop-transfer and internal start-transfer sequences in proteins, it can be said that __________. both cause the formation or stabilization of the translocon both cause the disassembly or destabilization of the translocon both are hydrophobic both lead to integral membrane proteins with the same orientation of C and N termini
Answer:
Both are hydrophobic
Explanation:
Because first of all Internal start- transfer process is a process where a peptide is transfered to the side opening of translocon and then then fixes itself in the membrane, whereas
Stop-transfer sequences in proteins act to stop this process of translocation and moves out through the side opening in translocation to fix itself on a membrane this is consistent with the hydrophobic nature that repels water. Because they are non polar and lack the capacity to form a hydrogen bond with another molecule
Wich statements accurately describe cells?Check all that apply.
1. Cells are the smallest unit of life
2.All organisms are made up of cells
3.Cells only make up unicellular organisms
4.Multicellular organisms are made of many cells
5.A plant is a unicellular organism made up of one cell
Answer:
Answers 1, 2, and 4
Explanation:
3 is incorrect because every organism is made of cells, not just unicellular organisms. these organisms do, however, have one cell that carries out all functions for the organism.
5 is incorrect because plants are multicellular organisms and thus have more than one cell.
Conlan wants to answer the question, “Does phosphorus affect tomato fruit production?” Which statement represents a hypothesis that he can test to answer his question?
Provided question lacks the group of choices to answer the question, however, the correct group of choices are given below:
A)If phosphorus affects tomato fruit production, then tomatoes that are fertilized with phosphorus will have larger leaves.
B)If phosphorus affects tomato fruit production, then phosphorus should be added to the soil during planting.
C)If phosphorus affects tomato fruit production, then adding phosphorus to the soil will make tomatoes taste better.
D)If phosphorus affects tomato fruit production, then plants that are fertilized with phosphorus will produce more tomatoes.
Answer:
The correct answer would be option D) )If phosphorus affects tomato fruit production, then plants that are fertilized with phosphorus will produce more tomatoes.
Explanation:
To answer the question of Conlan, “Does phosphorus affect tomato fruit production?” he should form a hypothesis that can test the amount of the phosphorus and amount of the production of tomato fruits.
Productivity of fruits dealt with the producing tomato fruit instead of their taste, or size of leaves. So the statement D represent the hypothesis for his question due to the fact that phosphorus can increase the capacity of tomato fruit production.
Thus, the correct answer is option D.
1. How are environmental science and ecology connected?
Answer:
Ecology is the scientific analysis and study of interactions among organisms and their environment. ... Environmental science focuses on the interactions between the physical, chemical, and biological components of the environment, including their effects on all types of organisms.
Explanation:
Answer:
Ecology is the study of all organisms in an environment
Environmental science is the study of the interrelatedness of everything in that environment
Explanation:
Unicellular cells must carry out ___ of life.(1 point) A. all functions B. a few functions C. a single function D. specific functions
Answer:
all functions
Explanation:
To survive, unicellular cells must carry out all functions.
Hope this helps!
Unicellular cells must carry out all functions of life. Thus, the correct option is A.
What are Unicellular cells?Unicellular cells may be defined as those organisms that generally consist of only a single cell. This single cell carries all the essential functions of life which are required in order to survive in nature.
The complexity of the genome in a such single-celled organism is very simple. The mechanism of compartmentalization is not found inside the cell of such organisms. All the functions are carried out by the same cell.
Examples of unicellular organisms are Bacteria, amoeba, Paramecium, archaea, protozoa, unicellular algae, and unicellular fungi. They possess a cell wall made up of peptidoglycan, chitin, or other forms of polysaccharides. This protect the inner content of the cell.
Therefore, unicellular cells must carry out all functions of life. Thus, the correct option is A.
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Who is the primary consumer in the following food chain?
Flower ---> Mouse
--->
Snake
--->
Hawk
Answer:
mouse
Explanation:
A student wants to investigate how adding fertilizer affects the growth of flowering plants. She gathers 10 identical flowering plants and divides them into two groups of five plants. One group receives the same amount of fertilizer at the same time each day for four weeks. The other group does not receive fertilizer. All plants in both groups are kept at the same temperature and given the same amount of water and light every day for four weeks. The growth of the plants after four weeks what would be the independent variable , dependent variable, hypothesis, and 3 controls no
Independent Variable: Fertilizer
Dependent Variable: Plant Growth
Hypothesis: Giving plants fertilizer will help them grow faster than plants with no fertilizer.
Controls: Type of plant, watering routine, temperatures, amount of sunlight.
Explanation:
Independent variable always modifies the dependent variable.
Dependent variable always changes based off of the independent variable.
The hypothesis must be a statement that can be tested with an experiment.
Control variables should stay the same throughout the experiment in order for the experiment to be testable and accurate.
When we begin to get dehydrated, we usually get thirsty, which causes us to drink fluids. Is thirst part of a negative or a positive feedback system
In order for evolution to occur:
new genes must form during reproduction.
organisms must change from one kind to another through mutations.
both statements above would have to be true.
Answer:
Yes, evolution is the change in the heritage characteristics of biological populations over successive generations
Jose designs an experiment to determine how music affects a plants' growth. He plans to carry
out his experiment by using six different flowering plants. Each plant will be placed in one liter
of potting soil, and given the same amount of water and sunlight each day. Each plant will be
exposed to six types of music for the duration of the experiment. He presents his plan to his
teacher for approval, but was told there is an error in the design of his experiment. What error
did Jose make?
A. Jose's plan does not have a hypothesis.
B. Jose's plan has too many control variables.
C. Jose's plan has more than one test variable (independent variable).
D. Jose's plan does not have an outcome variable (dependent variable).
Answer:
a
Explanation:
Water has a relatively high specific heat capacity that affects the boiling point of water compared to other molecules that are similar in shape and size. Explain the chemical properties that cause water to have a relatively high specific heat.
Answer:
first one
Explanation:
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Water's properties high heat capacity caused by hydrogen bonding, after absorption of heat, hydrogen bonds are broken and water molecules can move freely.
What are the properties of water ?Water is the chemical substance represents as H2O that is two hydrogen atoms covalently bonded to a single oxygen atom in one water molecule.
It is a colorless and tasteless have hydrogen bonds resulting present in the condensed form.
It has high melting and boiling points, with high specific heat, thermal conductivity, surface tension, dipole moment, etc.
It is an excellent solvent and helps in the transportation of ions and molecules, high latent heat of vaporization which maintain the body temperature.
Water is amphoteric in nature as it act as both acid and base, some electropositive elements reduce water to hydrogen molecule.
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What role best describes the bee's role of gathering pollen?
Answer:
Its niche
Explanation:
How can Polaris be located in the sky? the brightest star in the northern hemisphere by using Orion as a guide the last star in Cassiopeia by lining up the last two stars in the Big Dipper
Explanation:
many people think Polaris is the sky's brightest star.... that's because it's located nearly at the north celestial pole, the point around which the entire Northern sky turns..... shining in the northern sky every night, from northern Hemisphere locations.... diagram or big Dipper with arrow from two stars to Polaris.
The
is the basic unit of life.
A. organism
B. cell
C. tissue
D. organelle
Explanation:
The cell is the basic unit of life
Answer:
B. Cell
Explanation:
The Cell is the most basic unit of life
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Which of these statements about heating up land and water is true?
Land is heated through radiant energy.
or
Land is heated by conduction.
Answer:
I think its land is heated through radiant energy
Answer: land is heated up by radiant energy
Explanation:
Radiation from the sun heats up Earth's landmasses and oceans. The weather and climate on Earth are directly dependent on this heat energy transfer, and so are all the phenomena that accompany weather, such as winds, tornadoes, hurricanes, rain, snow, and ocean waves.
Some flowering plants are pollinated by honeybees. At some time in the past, honeybees evolved the ability to see ultraviolet radiation. Some flowers have evolved to produce ultraviolet markers on their petals that direct honeybees to the reproductive parts of the flower. What is this an example of?
Answer:
Coevolution
Explanation:
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The example of flowers evolving to produce ultraviolet markers on their petal in response to the ability to see ultraviolet radiation in honeybees is that of coevolution.
According to a definition, coevolution refers to reciprocal changes in 2 or more living organisms that are involved in some forms of interactions.
In other words, it is the development of certain characteristics by one organism in response to characteristics developed by another based on the fact that the two organisms interact in some ways.
In the illustration, some flowering plants depend on honeybees for pollination. Thus, as the honeybees developed the ability to see ultraviolet radiation, flowers had to evolve ultraviolet markers so as to keep guiding the honeybees to them and keep the relationship going.
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What is division of labour in multicellular organisms?
hello,
here is your answer:
**********
Multicellular organisms are made up of millions of cells. These cells are divided into separate groups. Each group performs a specific function. Since these cells carry out only a particular function, they do it efficiently.
**********
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Consider an experiment in which starch is dissolved in a liter of water. Some of the solution is placed into a securely tied dialysis bag. The dialysis bag is placed into a beaker containing distilled water and iodine for 30 minutes. What are the correct answers for the questions below? (Note: Iodine reacts with starch to create a black/purple color.) What would happen to the color of the solution in the bag? a. The solution in the bag would turn purple as the iodine reacts with the starch. b. The solution in the bag would grow lighter as the starch leaves the bag and enters distilled water and iodine.
Answer:
a. The solution in the bag would turn purple as the iodine reacts with the starch.
Explanation:
According to this question, a solution containing starch is placed into a securely tied dialysis bag. The dialysis bag is then placed into a breaker containing distilled water and iodine for 30mins.
The starch is a solute substance, which when added to the solution in the dialysis bag makes the solution in the bag HYPERTONIC in comparison to the hypotonic (low solute concentration) distilled water+iodine in the beaker. Based on this concentration gradient (difference in concentration), osmotic flow will occur across the dialysis bag (semi-permeable membrane).
Note that, osmosis is the movement of water from a region of low solute concentration to a region of high solute concentration across a membrane. Hence, water+iodine from the breaker will move into the solution in the dialysis bag.
Because the solution entering the dialysis bag contain iodine, it will react with the starch content of the dialysis bag and form a dark purple coloration inside the dialysis bag.
Part
Identify the independent variable and the dependent variable in the experiment. (3 pts)
Answer:
what experiment?
Explanation:
Do male doctors perform more cesarean sections (c-sections) than female doctors? a study in switzerland examined the number of cesarean sections (surgical deliveries of babies) performed in a year by samples of male and female doctors. here are summary statistics for the two distributions:
Answer:
Yes, it seems that male doctors do indeed perform more of these surgeries than the female doctors.
Explanation:
According to the given data, the distribution curve for the female doctors will be more symmetrical since the mean and median value is close to one another. The mean value and other indicators in the data set show higher values for the male doctor.
As the Black Death spread in the mid-14th century, which region tended to experience the
greatest loss of life?
A) Urban areas
B) Rural Farms
C) Remote villages
D) Mountainous areas
Answer:
urban areas
Explanation:
because the population of urban areas in those countries is more then villages.