Answer:
Explanation:
A way you can use celery stalks to demonstrate the conditions with loss or gain of turgor pressure, is by setting us the same situation with water. I. You could possibly make a chart with how the celery could change. II. Testing the different out comes of the celery changing and what it has done and if it matches the hypothesis. III. The type of data you could conduct would be is seeing the height, length, and width. As wellas trying to see how much celery would soak up. IV. A possible conclusion of that experiment would be that the celery stalks would all expand expect for the one not in any water and it all would possibly start to grow into more than one celery and sprout. H2OH2O
Turgor pressure is the pressure due to fluid in a cell, that provides a force making the plasma membrane to push upon the cell wall
The responses and reasons for the experiment demonstrating the conditions by which turgor pressure is lost or gained are as follows:
Observation: Cut celery placed in water are fresher and are not as wilted than cut celery placed on a table without water, or placed in a salt solution
(i) A testable hypothesis is given as follows;
Hypothesis: The turgor pressure is gained by increasing the hypotonicity of the water that the celery stalks is placed into
(ii) An outline of an experiment to test the hypothesis is presented as follows;
Procure three celery ticks and three beakers that can contain a stick eachPlace 100 mL fresh water from the tap into one of the beaker, 100 mL of 5% salt solution into the second and 100 mL 10% salt solution into the third beaker, and label the beakersMeasure and record the mass and sizes of celery stalk lengths cut to 5 cm length and identically sized, after which they are placed one each into each beaker Take a picture of the sticks in the containers that shows the sizes of the sticks, and also write a note describing each stick in the lab notebookPlace the containers into the fridge overnightMeasure and record the parameters of the sticks removed from the fridge and take a picture of the sticks with a ruler by the side of the container to show the size of the sticksRecord the observation(iii) A description of the type of data that will be collected include, the width, mass and length of each celery
(iv) A possible conclusion that could likely be made after completing the experiment is that the gain in turgor pressure is directly related to the hypotonicity of the solution the stick of celery stalk is placed
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What would be the best microscope to view living single-celled organisms in a sample of pond water
Answer:
compound light microscope
Explanation:
compound light microscope
Therefore, the best microscope to view living single-celled organisms in a sample of pond water is the compound light microscope. Electron microscopes are very expensive and with a great magnification, up to 1,000,000 times, they are better for some structures on the cell membranes.
What is meant by "concentration"? How can you increase the concentration of salt (electrolytes) in a solution of water? How can you decrease the concentration of electrolytes in a solution?
Answer:
See the answer below
Explanation:
The concentration of a solution refers to the amount of solute that is dissolved in a particular amount of solvent.
In order to increase the concentration of salt in a solution of water, more solute (that is, the salt) would be required to be added to a fixed volume of the solution. The more the amount of the salt added, the more the concentration of the solution provided the volume remains constant.
In order to decrease the concentration of electrolytes in a solution, more solvent would be required to be added to the electrolyte while keeping the dissolved solute constant. The more the added solvent, the lower the concentration as long as the amount of solute dissolved remains constant.
Define population size
Answer: Population size refers to the number of individuals in a population.
and it affected by births,deaths,immigration, and emigration.
Explanation:
can someone pls answer my question from my profile
Answer:
population size means the number of individuals in a certain area.
Explanation:
I hope this helps a bit!
What advantage does nuclear power have over power produced through the combustion
of fossil fuels?
A. Nuclear power produces only greenhouse gases, while combustion of fossil
fuels produces pollutants.
B. Nuclear power does not directly produce greenhouse gases or air pollutants,
while combustion produces both.
O c. Nuclear power produces only air pollutants, while combustion of fossil fuels
produces greenhouse gases.
XO D. Nuclear power uses a renewable fuel resource, while fossil fuels are
nonrenewable resources.
Answer:
B. Nuclear power does not directly produce greenhouse gases or air pollutants,
while combustion produces both.
Explanation:
Ap€x
what correctly describes the relationship of genes , dna , proteins and traits
Identify the factors that made early Earth a hot planet.
Answer:
meteorite striking the dinosaures
how do cells compare in size to things like rice and salt ?
Which of the foldwing is the most important in determining how quickly materials can move into and out of
a cell? (A) the volume of the cell (B) the mass of the cell (C) the surface area of the cell (D) the location
of the cell in relation to its environment.
Answer:
b the mass of the cell
Explanation:
What happens to DNA once transcription is done?
O It is destroyed.
O It makes more copies of itself right away.
O It zips back up until it is necessary to transcribe the gene again.
O It mutates.
Answer:
it makes more copies of itself right away
Explanation:
transcription is the process by which the information in a strand of DNA is COPIED into a new molecule of the messager RNA
When DNA transcription is done, it zips back up until it is necessary to transcribe the gene again (option C)
What is DNA transcription?The process of DNA transcription involves copying the information, from DNA into RNA.
Once transcription is complete the DNA molecule returns, to its double helix structure. This occurs because DNA is highly stable and doesn't require transcription. The DNA molecule is transcribed again solely when the cell requires production of a protein.
With the above information, we can conclude that when DNA transcription is done, it zips back up until it is necessary to transcribe the gene again (option C)
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Which three observations provides evidence of a cold air mass is moving towards a warm moist air mass over a city? ASAP 20 points!!!!!
Air quality is important to maintain for the health of all animals and plants. True or false
Answer:
true
Explanation:
seems self explanatory
Why would scientists use a spectrometer in space?
A. To maintain a constant air supply on board a space shuttle
B. To convert light from stars into usable energy for humans
C. To detect the birth and death of distant stars and galaxies
D. To study the chemical composition of the surface of a planet
Answer:
B. A spectrometer measures the wavelength and frequency of light, and allows us to identify and analyse the atoms in a sample we place within it.
Explanation:
Answer:
D. To study the chemical composition of the surface of a planet
Explanation:
took the test
What best describes the role of photosynthesis and respiration in the carbon cycle?
Answer:
Cellular respiration and photosynthesis are important parts of the carbon cycle. The carbon cycle is the pathways through which carbon is recycled in the biosphere. While cellular respiration releases carbon dioxide into the environment, photosynthesis pulls carbon dioxide out of the atmosphere.
Explanation:
Please mark me as brainlist
Photosynthesis removes carbon from the atmosphere, respiration adds carbon to the atmosphere.
What is photosynthesis?Photosynthesis is defined as the process through which plants convert carbon dioxide, water, and sunshine into oxygen and sugar for energy.
It can also be defined as a method used by plants and other living things to change light energy into chemical energy that can then be released through cellular respiration to power the organism's activities.
Through photosynthesis, plants transport carbon from the atmosphere into the biosphere and up the food chain. They use solar energy to chemically combine carbon dioxide, oxygen, and hydrogen from water to create sugar molecules.
Photosynthesis is primarily used to convert solar energy into chemical energy, which is then stored for use at a later time.
Thus, photosynthesis removes carbon from the atmosphere, respiration adds carbon to the atmosphere.
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Name four RNA viruses that jumped from animals to humans.
Explanation:
SARS, Ebola, swine flu, rabies
If you could help me it would make my day a 100x better.
Answer:
The way it's worded makes no sense, and I can't send actual links but hope this can help so you can look it up your self.(Link is on top left):
Explanation:
Answer:
12 19 15 17 14 18 16 13
Explanation:
A model answer for translation is always this:
mRNA leaves the nucleus via the nuclear pores and travels to a ribosome (in the cytoplasm or on the rough endoplasmic reticulum)
The ribosome attaches to the start codon on the mRNA.
A tRNA molecule with an anticodon complementary to the start codon on the mRNA carries a specific amino acid to the ribosome and lines up against the mRNA codon.
This is repeated, and each tRNA molecule transports a unique amino acid to the ribosome until the stop codon on the mRNA strand is reached.
As the ribosome moves along the mRNA strand, peptide bonds form between the adjacent amino acids, forming a polypeptide chain.
This chain detaches from the ribosome and will undergo folding to become a specific type of protein.
Hope this helps you to understand the process a little better! :)
Paleontologists construct a model of a dinosaur from its fossil bones and teeth. The fossil bones and teeth can help the paleontologists to infer all of the following about the dinosaur except the?
height of the dinosaur,
type of food the dinosaur ate
length of the dinosaur,
skin color of the dinosaur
Answer:
B - Dinosaur Skin
Explanation:
Unless the skin is mummified, like that of a Pinacosaurus, the chromatin in the bones will be completely deteriorated.
From fossils, scientists can learn more about dinosaurs. Scientists can learn about dinosaur lengths and tooth shapes from fossils. Scientists speculate on the weights, movements, and diet of the dinosaurs.
What are fossils?Fossils are defined as the well-preserved remnants of plants and animals whose carcasses were buried beneath ancient seas, lakes, and rivers in sediments like sand and muck. Usually, sedimentary rocks include fossils, though rarely, low-grade, fine-grained metamorphic rocks will as well. It's possible that the fossils have been removed, leaving molds in the surrounding rock.
Take note of pattern, color, and shape. Matthew continues, "Seek for something distinctive on the ground, and as you examine it, look for patterns." Dinosaur bones typically have a lined organic pattern, which are the original bone tissue's preserved Haversian canals.
Thus, from fossils, scientists can learn more about dinosaurs. Scientists can learn about dinosaur lengths and tooth shapes from fossils. Scientists speculate on the weights, movements, and diet of the dinosaurs.
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This type of reproduction happens when the parent cell divides to form two new cells called
daughter cells
a) Prophase
b) Mitosis
c) Meiosis
d) Metaphase
Answer:
C.meiosis
Explanation:
Answer:
THE ANSWER IS C 100% sure and its Mitosis its c
Explanation:
PLZ HELP ME !!!!!!!!!!!!!!!!1
Answer:
Anaphase
Explanation:
Because it shows separation of chromosomes which occur in anaphse
are building blocks and molecules the same
and are there building blocks to fiber if so what is it
Answer:
pay attention in class
Explanation:
State the general relationship between the galaxies distances from earth and their recession
Answer:
well, as we know from the formula,
Distance = speed of recession/Hubble constant
so we can infer that as distance become larger, the recession velocities will also become larger
Explanation:
I hope this helps!
multiple choice - biology
Answer:
dna replication
Explanation:
Answer:
D. DNA replication
Explanation:
As you can see the Helicase is splitting the DNA into two parts with the DNA polymerase duplicating the missing half or replicating the DNA. Which is why D is the answer.
Hope this helps!
To cause cancer, tumor suppressor genes require __________ allele(s) to be mutated and therefore are considered ______________________ . The mutation results in a ________ of function.
Answer:
Two
Recessive
Loss
Explanation:
To cause cancer, tumor suppressor genes require two alleles to be mutated and therefore are considered recessive. The mutation results in a loss of function.
What biotic and abiotic factors influence the flow of matter and energy in different biomes
Answer:
Temperature, water and nutrients.
Explanation:
Biotic factor refer to the living component of the ecosystem. Plants and animals.
Abiotic factor refer to the nonliving component of the ecosystem such as light, temperature e.t.c.
Biomes refers to group of terrestrial ecosystems on the earth.
Therefore, the following factors affect biomes
Water: water can affect biomes in the sense that too much of it can lead to flood, thereby leading to loss of plants and animals. Decrease of it can lead to famine which also can lead to loss of biomes.
Temperature: The best temperature should be optimum temperature. An increase or decrease in temperature have negative effect on biomes which can lead to low vegetation, dehydration, inactiveness of animals.
Nutrients: nutrients availability can lead to increase in plants growth. Vegetation will increase if there is adequate nutrients supply but if there is low nutrients there will be reduced growth.
Therefore, temperature, nutrients and water is important for biomes.
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¿Cuál de los siguientes organismos transforman el nitrógeno gaseoso en nitratos? Plantas Herbívoros Bacterias nitrificantes
Answer:
la respuesta es bacterias nitrificantes
Explanation:
All living needs energy it is requirement for life. In a typical cell atp the high energy molecules is produced in the ___ in the presence of sugar
Which of the following is not considered an environmental impact of geothermal energy? A) gas emissions B) disturbance of the land at drilling sites C) requires large-scale transportation of raw materials to refining sites D) hot waters are corrosive
Answer:
b
hope this helps
Explanation:
Answer:
the answer is C. disturbance of the land at drilling sites
Explanation:
Which activity contributes to an increase in the concentration of greenhouse
gases in the atmosphere?
Answer:
D. Deforestation
Explanation:
Loss of forests contributes as much as 30 percent of global greenhouse-gas emissions each year--rivaling emissions from the global transportation sector.Hopes this helps. :)
Answer:
D
Explanation:
Just took the quiz
What are the three metabolic processes that make up cellular respiration?
Answer: It is glycolysis, the tricarboxylic acid cycle, and oxidative phosphorylation
Explanation:
Duplicated chromosomes are attached to each other by
Select one:
a. tetrads
O b. clones
c. centromeres
d. chromatids
Explain the effect of the different SA:Vol ratios on the rate of osmosis into the potato.
WILL MARK BRAINLIEST ANSWER
Answer:
a larger surface area will mean quicker osmosis
Answer:
a larger surface area will mean quicker osmosis
Explanation:
here is a larger area meaning a larger difference in concentration
hope this helped