ASAP PLEASE HELP ASAP
1.Alex poured some pond water into three beakers. She then put waterweed into each
beaker. She put the beakers in different places.

i) In which beaker did the waterweed grow best? Give the correct letter.

________

ii) The waterweed in the box changed from dark green to pale yellow. Why did this happen?

2.In the school pond there were lots of water lilies with large leaves covering the surface. There were not many plants growing below the surface. Suggest a reason
for this.

3.In another experiment, Alex put similar pieces of waterweed into two more beakers of pond water. She added fertiliser to one of them. She kept them both by a window.

i) Alex added fertiliser to beaker E. Suggest the results of this experiment.
ii) What do fertilisers contain to help plants grow? Tick the correct box.

Answer:

6 amino acids

Explanation:

6 amino acids (asparagine, glutamine, histidine, serine, threonine and tyrosine) have both hydrogen donor and acceptor atoms in their side chains.

Answer:

The magma moved. The crystaline water is no longer being heated by the magma so it stops being a hot spring.

Answer:

The magma melts

Explanation:

The mouse Xist gene produces a 15 kb non-coding RNA transcript specific to the inactive X chromosome. It plays a crucial role in X chromosome inactivation, coating the nucleus and contributing to gene silencing without encoding a protein.

The product of the mouse Xist gene is a 15 kb long transcript that is specific to the inactive X chromosome (Xi). This transcript plays a critical role in X chromosome inactivation (XCI), a process that occurs during early development to silence one of the two X chromosomes in female mammals.

The Xist transcript is a non-coding RNA, meaning it does not encode a protein. It lacks a conserved open reading frame (ORF), suggesting that it does not produce a functional protein product. Instead, Xist functions as an RNA molecule involved in the regulation of gene expression.

Upon transcription, the Xist RNA localizes to the nucleus, where it coats the future inactive X chromosome. This coating leads to the recruitment of various protein complexes and epigenetic modifications, ultimately resulting in the silencing of genes on the Xi. Xist is thought to contribute to the establishment and maintenance of the inactive state by mediating long-range chromatin interactions and influencing the organization of the Xi.

Understanding the molecular mechanisms of Xist and XCI is important for unraveling the complexities of gene regulation and the development of sex-specific traits in mammals.

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At about day 26, the blastocyst will form chorionic villi, which sprout from the blastocyst's outer membrane and make contact with the maternal blood supply.

The tiny, finger-like chorionic villi are extensions of the placenta with the same genetic makeup as the growing fetus. Testing for further genetic abnormalities and illnesses may be possible, depending on the family history and the availability of lab tests at the time of the surgery.

The placenta contains chorionic villi, which significantly increase the surface area via which the fetus can access the maternal blood supply.

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Agronomy is one of 20 important branches of agriculture. Horticulture. Plant genetics and breeding.

What are the Four Agriculture Types? The four different types of agriculture are shift cultivation, subsistence agriculture, pastoralism, & intensive farming. Agriculture has become the most pervasive activity despite its unpredictability.

Food and beverage production, food and beverage retail, food services, eating and drinking establishments, textile, garment, and leather goods, as well as forestry and fishing, are all allied industries to agriculture.

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From the right atrium to the right ventricle, the deoxygenated blood flows .The overview of the circulation process are  blood enters from the right atrium contracts through tricuspid valve into the right ventricle.

The circulatory system, also known as the cardiovascular system, is responsible for transporting blood, oxygen, and nutrients throughout the body. It consists of the heart, blood vessels, and blood. Here's an overview of the circulation process:

1. Blood from the body, containing waste products and carbon dioxide, enters the right atrium through the superior and inferior vena cava.

2. The right atrium contracts, pushing the blood through the tricuspid valve into the right ventricle.

3. The right ventricle contracts, sending blood through the pulmonary valve into the pulmonary artery, which carries it to the lungs for gas exchange (removal of carbon dioxide and absorption of oxygen).

4. Oxygen-rich blood returns to the heart from the lungs via the pulmonary veins, entering the left atrium.

5. The left atrium contracts, pushing blood through the bicuspid (mitral) valve into the left ventricle.

6. The left ventricle contracts with considerable force, sending oxygen-rich blood through the aortic valve into the aorta.

7. The aorta branches into various arteries that distribute oxygenated blood and nutrients to cells, tissues, and organs throughout the body.

8. Deoxygenated blood and waste products are collected in veins, which ultimately return the blood back to the right atrium, completing the circulation process.

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The sex ratio, as always is 50%-50%.

Daugthers will have 50% chance of being carriers.

Sons will have 50% chance of being hemophiliacs.

In other words:

25% of the total offspring will be carriers of the condition (half of the females).

25% of the total offspring will be hemophiliacs (half of the males) .

Answer:

ggss x ggss

Explanation:

To produce 100% offspring having yellow pods (g) and wrinkled seed (s), we need to cross two organisms having yellow pods and wrinkled seeds.

You'll understand more by the Punnett square in the attached file.

Answer:

While exercising, the muscles need additional energy as the breathing rate and volume of each breath increase to bring more oxygen into the body and remove the carbon dioxide produced. If insufficient oxygen is available to the muscles, for instance, the exercise is vigorous and/or prolonged, the heart and lungs are unable to supply sufficient oxygen. Muscles begin to respire anaerobically. Lactic acid is produced from glucose, instead of carbon dioxide and water. Muscles continue to contract, but less efficiently. When a period of exercise is over, lactic acid must be removed, because the body's tolerance to lactic acid is limited. These processes require oxygen. This is why, when the period of activity is over, a person’s breathing rate and heart rate do not return to normal straight away.

The name given to the cells produced at the end of meiosis 1 in females is secondary oocytes.

Secondary oocytes, also known as secondary follicles, are a stage of egg cell development that occurs during the menstrual cycle in women. These cells are formed after the primary oocyte undergoes meiosis I, which produces two cells: a secondary oocyte and a polar body.

The secondary oocyte is larger than the polar body and contains most of the cytoplasm and organelles of the original cell. It is surrounded by a layer of cells called the corona radiata and a protective coating called the zona pellucida.

If the secondary oocyte is fertilized by a sperm cell, it undergoes meiosis II and forms a mature ovum (or egg cell) and another polar body. The mature ovum is then capable of being fertilized by a sperm cell and developing into an embryo. If the secondary oocyte is not fertilized, it will degenerate and be expelled from the body during menstruation.

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Answer:

B. Fibre

Explanation:

Answer: I can only help you with one

4. D because you need data fro what ever your doing.

thats as much as i can help vote me the brainleirst

Answer:

D

Explanation:

A deceased person can save up to 8 lives but I don't know if that would be the case for living people if that's what the question is asking

Answer:HH: 0.01

              Hh: 0.74

              hh:  0.16

Explanation:

Solution:

Advantages of solar appliances:

- Renewable Energy Source

- The ecological footprint is much smaller since greenhouse gases are not generated, since coal burning is not used.

- Reduces Electricity Bills

- Diverse Applications: solar energy can be used to produce electricity in areas without access to the power grid, distill water in regions with limited clean water supplies, and power satellites in space.

- Low Maintenance Costs: Most solar panel manufacturers offer a 20-25 years warranty. Solar power systems only need to be relatively clean.

There are no moving parts, there is no wear. The inverter is usually the only part that needs to be changed after 5-10 years. It works continuously to convert solar energy into electricity and heat (solar PV vs. solar thermal).

Disadvantages of solar appliances:

- The initial cost of purchasing a solar system is fairly high.

- Weather-Dependent: Solar panels are dependent on sunlight to effectively gather solar energy. Therefore, a few cloudy, rainy days can have a noticeable effect on the energy system.

- Solar Energy Storage Is Expensive: the batteries, used in off-the-grid solar systems, can be charged during the day so that the energy is used at night. This is batteries are expensive.

Answer:

I will give you an explanation, and try to figure it out!!

Explanation:

Incomplete dominance can occur because neither of the two alleles is fully dominant over the other, or because the dominant allele does not fully dominate the recessive allele. This results in a phenotype that is different from both the dominant and recessive alleles, and appears to be a mixture of both.

Answer:

True

Explanation:

The Sun has a higher mass, and if measured from the same distance would exert a higher gravitational force than Jupiter.

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The  biogenic sedimentary rocks form is option C - shells of marine organisms collect on the seafloor and are lithified. This process occurs when the shells of marine organisms such as corals, clams, and snails accumulate on the seafloor over time.

These shells are made of calcium carbonate and when they accumulate in large amounts, they can become compacted and cemented together to form a rock. This type of rock is called a biogenic sedimentary rock. Option A is describing the process of metamorphism, option B is referring to the breakdown of pre-existing rocks by organisms, and option D describes the process of transportation and deposition of eroded sediments, which can eventually form sedimentary rocks, but not specifically biogenic sedimentary rocks.

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Answer:

If trypsin is in an acidic environment, it will decrease its function, since its optimum pH is 8.

Explanation:

Trypsin is an enzyme responsible for break peptide bonds, thus hydrolyzing proteins into peptides and amino acids. This enzyme is secreted by the pancreas and poured into the duodenum —an alkaline environment— where it acts.

Since the optimal pH for trypsin to fulfill its function is 8, if the enzyme were placed in an acidic environment it would decrease its function. This is because enzymes work under specific pH and temperature conditions, and changes in these conditions affect enzymatic activity.

Answer: The animals would be at an increased risk of extinction because of the risks of inbreeding.

Explanation:

Answer:

168ml

Explanation:

It takes 83 mL of a 0.45 M NaOH solution to neutralize 235 mL of an HCI solution, than the concentration of HCl will be 0.158 mL.

The amount of a chemical substance in a mixture is expressed by the substance's concentration.

The interaction of H+ ions with OH- ions produces water in a neutralization reaction, which occurs whenever an acid as well as a base reacts to form water and salt.

Calculation of concentration.

Given data:

\(V_{1}\) = 83 mL

\(C_{1}\)= 0.45 M

\(V_{2}\) = 235 mL

\(C_{2}\) = ?

Concentration of HCl solution will be calculated by using the solution.

\(C_{1} V_{1} = C_{2} V_{2}\)

where, C is concentration and V is volume.

Put the value of given data in above equation.

\(C_{2} =C_{1} V_{1} / V_{2}\)

\(C_{2}\) = (0.45 M)(83 mL) / 235 mL

\(C_{2}\) = 0.158 mL.

Therefore, the concentration of HCl will be 0.158 mL.

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These carbon atoms are part of the acetyl-CoA molecule, which is the precursor for mevalonate synthesis.

Mevalonate is a molecule involved in the biosynthesis of cholesterol. It is derived from the precursor molecule acetyl-CoA. When palmitate labeled with 14C at every even-numbered carbon is added to liver homogenate, the radiolabel appears at the first and second carbon atoms of mevalonate.

The structure of mevalonate consists of a six-carbon chain with a hydroxyl group (-OH) attached to the third carbon atom. The first and second carbon atoms of mevalonate are derived from the acetyl-CoA precursor molecule. Acetyl-CoA is generated from the breakdown of fatty acids, including palmitate, in a process called beta-oxidation.

Since the palmitate used in the experiment is labeled with 14C at every even-numbered carbon, when it is metabolized and converted to mevalonate, the radiolabel will appear at the first and second carbon atoms of mevalonate. This indicates that the carbon atoms derived from the labeled palmitate are incorporated into the acetyl-CoA molecule and subsequently into mevalonate during the biosynthesis of cholesterol.

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Answer:

B. phases

Explanation:

The changing shape of the moon in the sky is called phases.

The moon seems to change shape from day to day in a cycle that lasts about a month as it goes through Phases.

The Moon seems to change shape because we notice distinct amounts of the lit portion as the Moon orbits Earth.

When the Moon is between Earth and the Sun, the lit flank is obscured from us.

As it moves around Earth, the lit flank comes into view. Then it commences and vanishes again.

Thus, The moon seems to change shape from day to day in a cycle that lasts about a month as it goes through Phases.

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The vestigial structures listed in the given responses are tail, ear muscles, and pelvis. However, the one structure that serves a purpose in humans is the ability to raise hair, which causes goosebumps. While this response also mentions the purpose of raising hackles in other animals, the ability to raise hair in humans still serves a purpose in response to cold temperatures, fear, or strong emotions. Therefore, the correct response is "hair raising: goosebumps in humans versus raising hackles to appear larger and aggressive in other animals like cats and monkeys".

Chromatography explains that leaves change color in the fall due to the breakdown of chlorophyll and the appearance of other pigments.

Leaves change color in the fall because of a process called chromatography. Chromatography is the separation of compounds based on their different properties, such as size, solubility, and polarity. In the case of leaves, the process of chromatography helps to explain the phenomenon of changing colors during autumn.

During the summer, leaves are vibrant green due to the high concentration of chlorophyll, the pigment responsible for capturing sunlight for photosynthesis. However, as the days shorten and temperatures drop in the fall, trees prepare for winter by breaking down chlorophyll molecules.

This breakdown reveals other pigments that were present in the leaves all along but masked by the dominant green chlorophyll. These pigments include carotenoids, responsible for orange and yellow colors, and anthocyanins, responsible for red and purple hues.

Carotenoids are often present in leaves throughout the year but are masked by the overwhelming green of chlorophyll. When chlorophyll breaks down, carotenoids become visible, resulting in the vibrant yellows and oranges associated with autumn foliage. Anthocyanins, on the other hand, are produced in response to environmental factors like light intensity and temperature. As chlorophyll breaks down, some trees produce anthocyanins, leading to the appearance of red and purple colors.

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The correct option is B -Terrestrial insects−−uric acid.

The species that is incompatible with the main sort of nitrogenous waste it excretes is an insect that lives on land. The correct response for terrestrial insects is "uric acid," not "ammonia."

The primary nitrogenous waste excreted by terrestrial insects, such as insects and spiders, is uric acid. Uric acid is a somewhat insoluble waste product that requires less water for excretion in organisms living in dry or terrestrial settings.

Hence option B is correct.

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Answer:

6) Solar power

7)sugarcorn

8) geothermal

9)C

10) CARBON DIOXIDE

When covalent bonds form between hydrogen and oxygen atoms in a water molecule two hydrogen atoms share their electrons with an oxygen atom.

A covalent bond is formed when two atoms exchange one or more pairs of electrons. The two atomic nuclei are simultaneously drawing these electrons to them. When the difference between the electronegativities of two atoms is too small for an electron transfer to take place to form ions, a covalent bond is formed.

An atom can form bonds with other atoms in two main ways: covalent and ionic. The sharing of electrons between two or more atoms forms a covalent bond. When two or more ions come together, they can form ionic bonds that are held together by charge differences.

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Answer: When covalent bonds form between hydrogen and oxygen atoms in a water molecule two hydrogen atoms share their electrons with an oxygen atom.