The water moves up the xylem by the process of Agglomeration.
The tension created by transpiration "pulls" water into the xylem of the plant, pulling it up, much like a straw pulls water up. Agglomeration (water sticking together) pulls the top water toward the pores, so more water molecules fill the gaps in the xylem.
Water molecules in xylem cells strongly attract each other. Due to hydrogen bonding, there is a strong cohesive force between molecules. Thus, a continuous column of water is wicked into the stem by evaporation of the leaves in the transpiration flow.
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In guinea pigs the coat may be rough or smooth. Certain rough-coated guinea pigs when crossed with smooth-coated ones produce all rough- coated offspring. Other rough-coated guinea pigs when crossed with smooth-coated ones produce equal numbers of rough-coated and smooth-coated offspring. Smooth-coated guinea pigs crossed together always produce smooth-coated offspring. Explain these results. Write the genotypes for all animals concerned in the crosses.
The result for this will be:
smooth in 1:1 proportion. 8 rough: 7 smooth is near 1:1.
Smooth-covered parent must be rr. The rough covered parent is either RR or Rr.
In the event that the parent is RR, RR X rr ought to give all Rr progeny in F1s, or as such,
all Rough covered offspring in F1s. This doesn't occur.
In the event that the parent is Rr, Rr X or ought to give Rr: rr descendants in 1:1 proportion or unpleasant:
smooth in 1:1 proportion. 8 rough: 7 smooth is near 1:1.
So parental genotypes are Rr and rr
What's the genotype mean?
From an expansive perspective, the expression "genotype" alludes to the hereditary cosmetics of a life form; at the end of the day, it depicts an organic entity's finished arrangement of qualities. In a more limited sense, the term can be utilized to allude to the alleles, or variation types of a quality, that are conveyed by an organic entity.
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Describe how controlling gene expression will alter the overall protein levels in the cell. (6)
Gene expression is the process by which genetic information is transcribed into proteins.
When a gene is turned on, it produces a protein that interacts with other proteins in the cell and causes a change in cell function. Gene expression is controlled by either negative or positive regulators.
Negative regulators are proteins that bind to the promoter region of a gene and inhibit its transcription. Positive regulators are proteins that bind to the promoter region of a gene and enhance its transcription.
When a gene's promoter region is bound by a negative regulator, the transcription of that gene will be inhibited. This means that the levels of protein produced from that gene will be decreased as well as their functions. On the other hand, when a positive regulator binds to the promoter region of a gene, it increases its transcription and production levels.
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List some human activities that cause deforestation.
Deforestation is the process of removing the trees of an area permanently. It can be prvoked by natural causes, but also by human activities such as: wood extraction, infrastructure expansion and oil extraction.
Water moves by capillary action through soil from moist areas to dry areas. Which property of water is most responsible for this capillary action?
Answer:
Water has a high surface tension
Explanation:
This is a symbiotic relationship in which one of the organisms gains
something and the other loses something in the process
A competition
B mutualism
C parasitism
D commensalism
Major horticulture grouping
Floriculture, olericulture, pomology and post-harvest technology are major horticulture grouping
Floriculture is a branch of ornamental horticulture concerned with growing and marketing flowers. olericulture a branch of horticulture that deals with the production, storage, processing, and marketing of vegetables.
Pomology is the study and cultivation of fruits it is also known as fruticulture. Pomology is emerging field in science and technology for production and handling of temperate fruit and nut crop. Post harvest technology is responsible for protection, conservation, processing, packaging, distribution, marketing of fruits and vegetables .
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A cross-country skier travels 5Km due North, makes a right-angled turn, and travels a further 12Km due East. (a) If the distance is covered in 51 min, what is the skier average speed in Km/h? (b) What is the magnitude of the skier's average velocity in Km/h?
The skier's average speed in Km/h is 20 ms⁻¹.
The average speed of the object is multiplied by the time traveled to discover the displacement. The equation x = ½( v + u)t may be manipulated, as proven below, to locate any one of the 4 values if the other 3 are regarded. Speed is the directional speed of an object in motion as an indication of its rate of change in function as observed from a selected body of reference and as measured by means of a particular standard of time.
calculation:-
Average speed = total distance / total time taken
= 5 + 12 / 51 min
= (17 / 51)× 60 hr
= 20 ms⁻¹
total displacement = [tex]\sqrt {5^{2} +12^{2}[/tex]
= 13 m North - East
Magnitude of average velocity = (13/51) x 60
= 15.29 ms⁻¹
The velocity is the time fee at which an item is moving along a direction, even as the pace is the rate and route of an item's motion. speed is the speed at which something moves in a particular route. An example as the speed of an automobile touring north on a toll road, or the velocity a rocket travels after launching. In a scalar way, the absolute price magnitude of the velocity vector is continually the rate of the motion.
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Which of the following is NOT an essential part of turning nitrogen into a form usable by animals?A. LightningB. Nitrogen fixing bacteriaC. Denitrifying bacteriaD. Nitrifying bacteria
The correct answer is A. Lightning. Thunders do not participate in any way in the N cycle.
1. The graph below shows rate of reaction data for 2 different enzymes. One of these enzymes is found in the stomach, the other is found in the mouth.a) Both these enzymes have the same optimum pH, TRUE or FALSE?2. Explain, in terms of bonding, why the rate of reaction gradually falls once the pH increases above the optimum rather than denaturing straight away.
According to the graph, the enzymes have different optimum pH as the curves do not overlap.
The answer of question a is: False
In terms of bonding, the rate of the reaction falls gradually once the pH increases above the optimum rather than denaturing, because the enzyme might suffer certain modifications that may decrease its affinity towards the sustrate, or alter its active site, but not necessary degrade, or denature the whole molecule. This proccess doesn't occur at a minimal pH change.
In some parts of the world people use spears in order to catch fish. Quite often when people try
to do it for the first time they will miss, even if the fish is only a meter or so away.
In a reversal of roles there is a very special fish called the Archer Fish that does the opposite and
hunts bugs outside the water. It squirts a jet of water, that is accurate up to 2 meters and knocks
bugs off leaves, to fall into the water and be eaten.
hello! it would help if you could put a question along with the text so we can better help you ^^
Help asap please help will give brainliest (very easy) (science middle school not biology)
There is more water that enters the water cycle from the tropical region than from the desert regions.
What is the water cycle?Water does move from one point to the other in the eco system and this crosses all of the spheres of life. The water cycle involves the evaporation of water both from the surface waters and from plants and the condensation of the same to fall back to the earth as rain.
Given the fact that there is abundant rain fall in the topics than we have in the desert, there is a greater availability of water in the tropical region than in the desert regions. This makes it only natural that we expect that more water would evaporate into the water cycle from the tropical region than it does from the desert regions.
Thus means that the region that would ultimately contribute to the water cycle is the tropical region.
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how long are the polymers that make them up? 1 monomer? 2 monomers ? many monomers ?
100 point for this please answer
thank you
The polymers that make 1 monomer are 1 unit, 2 monomers 4 unit, and many monomers of various units.
There are 4 essential kinds of monomers, which include sugars, amino acids, fatty acids, and nucleotides. each of those monomer kinds plays a vital role in the life and development of lifestyles, and everyone may be synthesized abiotically.
Polymers are massive molecules made from lengthy chains or networks of smaller molecules referred to as monomers. natural polymers include silk, hair, proteins, and DNA, while artificial (guy-made) polymers consist of polyethylene, polypropylene, and polyester.
A polymer is a molecule made of repeating gadgets. those devices, called “monomers”, shape an extended molecular chain. it might have branches, or it might simply be one straight line of molecules, each related in an equal manner. A monomer of polyethylene.
A polymer is a large molecule, or macromolecule, composed of small repeating singular molecular structural units called monomers. The repeating molecular devices are joined collectively chemically thru covalent bonds.
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How can septic tanks potentially contaminate water?
Wastewater flows into home septic tanks instead of city storage.
Septic tanks leak into coastal waters due to rising sea levels.
Using septic tanks near urban areas
Using septic tanks in rural areas
Septic tanks are used for waste water management in homes. It can potentially contaminate water by (A), (B) and (C).
What is septic tank?Septic tanks are watertight containers that allow solids to settle to the bottom and less dense liquids to float, allowing bacteria to decompose solid waste in home wastewater.
Since septic tanks can't pump wastewater to a water treatment facility, they need some maintenance.
Septic tanks in rural areas can contaminate drinking water due to poor water systems. In rural areas, water comes from wells, rivers, and streams, so if a septic tank is too close, it could contaminate the water. Wastewater can contaminate drinking water.
Due to rising sea levels and heavy rainstorms, septic tanks near coastlines may contaminate drinking water. This prevents soil from treating septic tank wastewater before it contaminates groundwater and drinking water.
If a septic tank is clogged or has a high volume of water, it may saturate the ground with sewer water and leak into groundwater, contaminating any nearby water source with pathogenic germs.
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The membrane of a cell is depicted as mosaic because it _______A. is composed of many different kinds of macromoleculesB. moves proteins laterally through the entire length of a cellC. does not hold the characteristics of a solid substanceD. folds itself into a double layer when placed into polar surroundings
A mosaic is a figure created by a pattern of many pieces that can have different conformations, sizes and colors. The cell membrane carries the characteristicis of all options for the answer, but the one that relates to the mosaic is the fact that it is composed of many different kinds of macromolecules, which can also have different conformations and sizes. Therefore, the correct answer is A.
this freshwater biome is characterized by fast-flowing water that can originate from underground springs or runoff, which carries sediment and organic material.
River is a freshwater biome is characterized by fast-flowing water that can originate from underground springs or runoff, which carries sediment and organic material. Because of gravity, water flows from a higher height to a lower elevation to produce rivers.
Freshwater biomes include lakes, ponds, rivers, streams, and wetlands; they vary in depth, water movement, and other abiotic elements. When rain falls on land, it either seeps into the ground or transforms into runoff, which travels to the sea by flowing downhill into rivers and lakes as freshwater biomes.
A river is a significant, un-manmade stream of moving freshwater. On practically every type of land and on every continent, rivers can be found. Some flow continuously throughout the year. Others flow sporadically or during wet years.
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Select one of the ABIOTIC factors you identified above to elaborate on how this factor impacts anorganism's population.
Water has a huge impact on a living organism, it is considered that life was possible due to water so talking about the impact of this abiotic factor on populations has deep implications. We can divide water influence into two main categories, one is in aquatic organisms and the other on terrestrial organisms, in the first case is their medium in which live and are adapted to so is not just vital support but the environment itself. In the second case on terrestrial organisms we have that abundance and availability of water has shaped the flora and fauna we see on different ecosystems, and the organisms on it are adapted to deal with it, for example, we have deserts, where plants and animals are adapted to the scarcity of water, in wich way they maximize the few millimeters of water available, and on the other hand, we have rain forests or jungles were plants and animals are adapted to deal with water excess. So as we can see water shapes basically the entire ecosystem.
Which of the following describes astate where the conditions cause apopulation to NOT evolve?A. Hardy-Weinberg equilibriumB. Natural selectionC. Genetic DriftD. Gene Flow
The correct answer is the letter
A. Hardy-Weinberg equilibrium
Hardy-Weinberg equilibrium means that allele frequencies of the population do not change if certain conditions are met.
Natural
3. (3 pts) The H295R cells for the final experiment were treated with Atrazine using the
following protocol:
Step 1: Combine
1 ul of (3 X 10 ppm Atrazine, DMSO)
0.999 ml of cell culture media
Step 2: Combine the following 3 liquids (consider the final volume of this mixture
= 60 ml for your calculations).
60 ul of the solution prepared in step 1
3 ml of cells suspended in cell culture media.
57 ml of cell culture media
a. What is the concentration of Atrazine in ppb in the treated cells?
b. How much more concentrated is the atrazine in the highlighted solution than in the
treated cells? Describe the highlighted solution (relative to the experiment) in X terms.
C. What is the concentration of DMSO in the highlighted solution in %v/v?
d. What is the concentration of DMSO in the treated cells in %v/v units?
Answer:
Explanation:
I need to know which answer is the correct answer so.. I can finish my homwork
The presence of nucleus and organelles with membrane makes the difference between eukaryotes and prokaryotes, so: Cell A is an eukaryotic cell and cell B is a prokaryotic cell.
Jakob has just measured distilled water in a glass beaker. He notices that there is a small chip on the opening of the beaker. He won't be heating the beaker or adding any other chemical substances to the beaker. What should he do next with the beaker to follow chemical safety quidelines?
A. Pour the distilled water down the sink drain and dispose of the beaker by placing it in the hazardous waste container.
B. Pour the distilled water down the sink drain and dispose of the beaker by placing it in
the container labeled for glass.
C. Continue to use the beaker, but mark the beaker with a red X, and inform other lab students to only use it for room temperature water.
D. No steps need to be taken because he is only using the beaker for distilled water.
Answer:
the answer is A
Explanation:
100 points (its not A
Which of the following is a possible consequence of chemical pollutants in a lake or river?
Increase of oxygen in the water
Decrease in algae colonies
Quick drop in dissolved oxygen
Increase in nitrates and phosphates
Answer:Decrease in algae colonies
Explanation:Because with more toxic chemicals its poisoning algae certain fish and things of that nature
What was the first eon of the Precambrian?A. PaleozoicB. HadeanC. PhanerozoicD. Archean
Hadean is the first eon of precambrian, and took place around 4.6 and 4.0 billion years ago.
Watson and crick deserve credit for DNA because
Answer: Crick and Watson were the ones who discovered the double helix shape of DNA.
5. What organisms save water by turning carbon dioxide into a special carbon compound before carrying out photosynthesis? photosynthetic plants
C4 plants
CAM plants
photosynthetic bacteria
The organisms which save water by turning carbondioxide into a special carbon compound before carrying out photosynthesis is referred to as C4 plants and is denoted as option B.
What is Photosynthesis?This is defined as the process in which green plants manufacture food in the presence of sunlight and other compounds. On the other hand, a plant which cycles carbon dioxide into four-carbon sugar components for entry into the Calvin cycle is known as a C4 plant.
These organisms save water through this condition and it is common in areas with a very dry climate which is therefore the reason why option B was chosen as the correct choice.
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which sentence is the best example of living things reproducing to make more of their kind?
Answer: C
Explanation:
Answer:
D. A male robin and a female robin care for eggs that combine genes from both robins.
Explanation:
it is
The scatterplot shows a correlation between height and weight for giraffes.
Which graph shows the line of best fit for the data set?
Answer:
c
Explanation:
a line of best fit is only connected to 3 points which ate straight
The line of best fit for the data set is graph C.
A line of best fit is a line that minimizes the overall error between the line and the actual data points. In other words, it is the line that best represents the relationship between the two variables.
In the scatterplot, the data points tend to cluster around a line that slopes upwards from left to right. This suggests that there is a positive correlation between height and weight for giraffes. In other words, as giraffes get taller, they tend to get heavier.
The line of best fit for this data set is graph C. This line minimizes the overall error between the line and the data points. The other two lines are not as good fits for the data set because they do not minimize the error as well.
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Which of the following statements are true of logistic growth?
a. As the population becomes larger, it grows more slowly.
b. When the population reaches carrying capacity, it stops growing (
c. the population grows at a steady rate
d. As the population becomes larger, it grows more and more rapidly
Answer:
- When the population reaches carrying capacity, it stops growing.
- As the population approaches carrying capacity, it grows more slowly.
Logistic growth is the growth showing that the population grows in a curve where it is rapid first and reach the slow rate later on. The correct answer is option A.
What is population ?It is defined a s the mass of people living together who share the features in similarities in the choice of adaptation and habitat in which they reside in.
As the population sizes increases there is scarcity in the resources on which the people live on along with the kind of adaptation and habitat in which they are living.
The slower growth rate means the population is in a big number with the shortage of food this is why the logistic growth curve shows that there is a big increase in the population rate first but later on when the resources number gets slowed down then at that time it will show low population growth rate.
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What’s the correct answer answer asap for brainlist
In muscle contraction Actin and myosin comes in and out of the cell to make it thicker or thinner which changes its length.
Muscle contraction takes place while the skinny actin and thick myosin filaments slide beyond every other. It is typically assumed that this procedure is pushed through cross-bridges which expand from the myosin filaments and cyclically engage with the actin filaments as ATP is hydrolyzed. In order for a skeletal muscle contraction to arise;
There need to be a neural stimulus. There need to be calcium withinside the muscle cells. ATP need to be to be had for energy.
Muscle spasms can arise because of numerous causes, including a loss of nutrients, muscular tension, overuse of the muscle, extended call for of blood flow, or diverse underlying clinical conditions.
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Which of the following characteristics of water are important for its role in cellular reactions?
1. high heat of evaporation
II. low friction between molecules
III. solvent properties
IV. thermal stability
O I, II, III, and IV
O I, II, and III only
O II, III, and IV only
O I, II, and IV only
Explanation:
dang ..................................
A formal tone used for writing, as you are addressing your commanderA heading or title including a date and greeting to the commander (for example, “Confidential Letter, December 1786.”)First paragraph:An explanation of the powers that Congress has under the Articles of ConfederationA list of the strengths of the new government under the Articles of ConfederationA list of the weaknesses of the new government under the Articles of ConfederationExamples of how people have reacted to the new governmentSecond paragraph:An explanation of why a new, stronger government is necessaryIf you do well, your commander may reward you with a promotion. After all, your mission is for the glory of Great Britain, which was humiliated by its defeat in the Revolutionary War. The commander is detail oriented and will want as many facts as possible.
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