Where is sperm and egg made? What their journey to fertilization? What happens if the egg is not fertilazed?

Answer:

Reduce the mass and measure the speed of pendulum.

Explanation:

First measure the swings of the pendulum at its original weight. After that some weight is removed from the pendulum and again measure the number of swing of pendulum at specific time period. We have to reduce mass of pendulum and then measure the number of swings. In this way, this experiment moves forward and we can find out the impact of mass on the speed of pendulum.

Answer:

they are least three inches tall

Explanation:

thx

Answer:

Restriction enzymes and DNA ligase are often used to insert genes and other pieces of DNA into plasmids during DNA cloning.

The statement "molecular orbital (MO) theory treats a molecule as a collection of nuclei with MOs delocalized over the entire structure" is true. It is a fundamental concept in molecular orbital theory, which is one of the two primary ways to describe the electronic structure of a molecule.

In this theory, each molecule is viewed as a whole with its constituent atoms' atomic orbitals combined to generate new molecular orbitals.The electrons are assigned to these new MOs according to the Pauli exclusion principle and Hund's rule, which govern the electronic configuration of the molecule.

The molecular orbital theory explains the bonding, antibonding, and nonbonding interactions between electrons, which underlies the physical and chemical properties of the molecule.MO theory also makes it possible to describe the molecule's spectroscopic properties, such as UV-visible and infrared spectra. For example, electronic transitions that lead to absorption in the UV-visible region of the electromagnetic spectrum can be attributed to electron excitation from the bonding to antibonding molecular orbitals.In conclusion, molecular orbital theory treats a molecule as a collection of nuclei with MOs delocalized over the entire structure.

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Answer:

Explanation:

Answer:

a) faults

Explanation:

The two main categories of igneous rocks are extrusive and intrusive. Extrusive rocks are formed on the surface of the Earth from lava, which is magma that has emerged from underground. Intrusive rocks are formed from magma that cools and solidifies within the crust of the planet.

Answer:

The paired centromeres from each chromosome have just begun to separate and the sister chromatids are being pulled apart by the kinetochore microtubules as they are shortened by the loss of tubulin monomers. ... These chromosomes appear V-shaped when observed during anaphase.

Explanation:

Environmental and engineering elements to control laboratory animal allergens include proper ventilation, air filtration systems, personal protective equipment, and facility design.

To control laboratory animal allergens and minimize exposure to allergenic substances, several environmental and engineering measures can be implemented. These measures aim to create a safe and healthy environment for both animals and personnel working in the laboratory.

Proper ventilation is essential to ensure adequate air exchange and removal of allergens from the air. Ventilation systems should be designed to provide fresh air and prevent the accumulation of allergens in the laboratory environment. Additionally, air filtration systems can be installed to capture and remove allergenic particles from the air.

The use of personal protective equipment (PPE), such as gloves, masks, and lab coats, can help prevent direct contact with allergens and reduce the risk of sensitization and allergic reactions. PPE should be worn consistently and appropriately in areas where allergens are present.

Facility design is another important element in controlling laboratory animal allergens. Design considerations may include separate ventilation systems for animal housing areas, dedicated areas for cleaning and waste disposal, and the implementation of barrier systems to prevent cross-contamination between different areas.

By implementing these environmental and engineering elements, laboratories can effectively control laboratory animal allergens, reduce exposure risks, and promote the health and safety of both animals and personnel.

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Answer:

Well, I cannot see your list of suggestions but I am assuming one of them would be muscles.

Muscles use a lot of energy and require a large number of mitochondria.

Explanation:

The given statement "movement of Ca²⁺ out of the cell through the Na / Ca²⁺ channel is an exergonic process" is FALSE.

Exergonic reaction refers to a chemical reaction that releases energy. When the movement of  Ca²⁺ ions takes place, it is an endergonic process. Endergonic reaction is the opposite of exergonic reaction, which means it requires energy to proceed. Therefore, the movement of  Ca²⁺ ions out of the cell through the Na+/ Ca²⁺ channel is an endergonic process.

When the concentration of  Ca²⁺ ions in the cytosol is higher, it can move out of the cell with the help of Na⁺/ Ca²⁺ exchanger. This exchanger is an antiporter protein that moves one  Ca²⁺ ion out of the cell in exchange for three Na+ ions to move inside the cell. In conclusion, the statement "movement of  Ca²⁺ out of the cell through the Na / Ca²⁺ channel is an exergonic process" is incorrect.

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The relative humidity is approximately 22.9% based on the given wet bulb temperature of 10°C and dry bulb temperature of 14°C.

Wet bulb temperature: 10°C = 50°F

Dry bulb temperature: 14°C = 57.2°F

SVP at wet bulb temperature: 0.284 * \(e^(17.27 * 10 / (10 + 237.3))\)= 0.284 * \(e^(-7.09)\) = 0.284 * 0.000828 = 0.0002356 psi

SVP at dry bulb temperature: 0.284 *\(e^(17.27 * 14 / (14 + 237.3))\) = 0.284 * e^(-5.97) = 0.284 * 0.002562 = 0.0007296 psi

AVP = 0.0002356 - (0.00066 * (57.2 - 50) * 14.7) = 0.0002356 - (0.00066 * 7.2 * 14.7) = 0.0002356 - 0.0686 = 0.000167 psi

RH = (AVP / SVP at dry bulb temperature) * 100

RH = (0.000167 / 0.0007296) * 100 = 0.229 * 100 = 22.9%

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The type of selection that may eliminate intermediate phenotypes is disruptive selection, option (b) is correct.

Disruptive selection, also known as diversifying selection, occurs when extreme phenotypes at both ends of a trait spectrum are favored over intermediate phenotypes. This type of selection can lead to the splitting of a population into two distinct groups, each adapted to different environmental conditions or resources. In disruptive selection, the intermediate phenotypes experience reduced fitness compared to the extreme phenotypes.

This can result from factors such as divergent selection pressures or the presence of multiple selective forces acting simultaneously. Over time, as the extreme phenotypes continue to thrive and reproduce, the intermediate phenotypes may become less prevalent or even disappear from the population. This process can ultimately lead to the formation of two separate subpopulations or the evolution of new species, option (b) is correct.

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Answer:

Millions of these tiny brown specks, from more than 930,000 varieties of food crops, are stored in the Global Seed Vault on Spitsbergen, part of Norway's Svalbard archipelago. It is essentially a huge safety deposit box, holding the world's largest collection of agricultural biodiversity.

Explanation:

thanks me later

The sequence of RNA codons resulting from the substitution mutation that changed the 5th base in the DNA from a C to a T is AUGUGCGUUAUCCAGGGUAGCCAAUUGA.

In DNA, the base C (cytosine) pairs with G (guanine), while in RNA, the base C pairs with G. However, due to the substitution mutation, the original C is replaced by a T (thymine) in the DNA sequence.

In RNA, thymine is replaced by uracil (U). Therefore, the RNA codons corresponding to the mutated DNA sequence can be derived by replacing each T with U and maintaining the sequence order.

The original DNA sequence TACACGCAATTACCAGGGTAGCCATTGATT would have the corresponding RNA codons AUGUGCGUUAUCCAGGGUAGCCAAUUGA. Each codon consists of three bases and represents a specific amino acid or a start or stop signal in the translation process of protein synthesis.

It's important to note that the given DNA sequence is provided as a single continuous string, and without additional information about the reading frame or specific gene sequence, it is not possible to determine the precise protein sequence or the functional implications of the mutation.

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Answer:

But around 8,000 years ago in what's now Turkey — just when humans were starting to milk newly domesticated cows, goats and sheep — mutations near the gene that produces the lactase enzyme started becoming more frequent. And around the same time, adult lactose

Explanation:

people started to build lactose tolerance

Answer:

en el grupo 3 se encuentran los halogenos no metales

Explanation:

Genotype is the DNA code for each organism, while Phenotype is the expression of the code.

The Genotype of an organism is its entire set of genetic material. The chemical composition of DNA in the collections of genes responsible for a particular trait is known as Genotype. It is visible in blood groups, genetic diseases, etc. It is a set of DNA genes responsible for unique traits or characteristics. Genotypes are affected by genes.

Phenotypes is the outcome of interaction between the Genotype and environment. Phenotypes are affected by Genotype and environmental factors. Phenotype is the physical appearance, physical properties or physical characteristics which are visible of an organism like hair, eyes, colour and height.

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The combining form that means hump (increased convexity) of the spine is Kyphosis. It is a condition that can affect people of all ages, but is most common in older adults.

Kyphosis can be caused by a variety of factors, such as poor posture, aging, osteoporosis, and tumors. It is usually characterized by an excessive arch in the upper back, resulting in a rounded or humped spine. In severe cases, the spine may be bent in an extreme arch, causing pain, difficulty breathing, and a visible deformity. People with kyphosis often find that their head is bent forward and their chest is sunken.

Treatment for kyphosis depends on the severity and cause of the condition, but may include physical therapy, surgery, or bracing. If left untreated, kyphosis can lead to further medical complications and even disability. Kyphosis is a condition that should not be ignored, as it can have serious consequences if not treated properly.

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The predicted mRNA Expression (RNAseq) value for HeLa cell line based on the given Affy value of 8.2 is approximately 7.60.

Here in this question,
RNAseq = 0.935 * Affy - 0.12

Substituting the given Affy value of 8.2 into the equation, we get:

RNAseq = 0.935 * 8.2 - 0.12

RNAseq = 7.60

By following these steps, you will be able to determine the predicted mRNA Expression (RNAseq) value for the HeLa cell line, which was originally derived from Henrietta Lacks' cervical cancer cells.

Henrietta Lacks was an African American woman who was being treated for cervical cancer at Johns Hopkins Hospital in Baltimore, Maryland. During her treatment, a small sample of her tumor was taken without her knowledge or consent for research purposes. These cells were the first human cells to be successfully cultured in a laboratory and have since become one of the most important tools in medical research.

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Answer:

Major organs involved in the digestive system include the mouth, stomach, small intestine, large ... When it reaches your stomach, a sphincter opens and dumps the food in. ... To move into the small intestine, chyme must pass through the pyloric sphincter. From here it enters the duodenum, the first part of the small intestine.

Explanation:

Answer:

it’s B

Explanation:

The organism that would have had to evolve the most advanced homeostatic mechanism to cope with the greatest amount of solutes would likely be a marine invertebrate.

In order to answer this question, we need to understand what homeostasis is and how it relates to solutes. Homeostasis refers to the ability of an organism to maintain stable internal conditions despite changes in the external environment. One important aspect of homeostasis is maintaining a balance of solutes within the body. Solutes are particles, such as ions or molecules, that are dissolved in a fluid, such as blood or cytoplasm.

The organism that would have had to evolve the most advanced homeostatic mechanism to cope with the greatest amount of solutes would likely be a marine invertebrate, such as a jellyfish or sea cucumber. This is because these organisms live in a highly saline environment, with a much higher concentration of solutes than most terrestrial or freshwater organisms. To maintain a balance of solutes within their bodies, marine invertebrates have evolved specialized structures, such as contractile vacuoles and ion transporters, that allow them to regulate the movement of solutes across their cell membranes.

In contrast, terrestrial organisms, such as mammals and birds, have evolved mechanisms to conserve water and excrete excess solutes, since they typically live in environments with lower concentrations of solutes. Freshwater organisms, such as fish and amphibians, face the opposite challenge of taking in too much water and losing solutes, and have evolved mechanisms to actively transport solutes into their bodies and excrete excess water.

Overall, the organism that has had to evolve the most advanced homeostatic mechanism to cope with the greatest amount of solutes is likely to be a marine invertebrate, due to the extreme salinity of their environment.

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Answer:

β-oxidation and gluconeogenesis

Explanation:

This 22-year-old woman, by not eating her food for a long time, entered a period of prolonged fasting.

Which there are no glycogen reserves, since they were depleted and neither were glucose assimilations by the cells because the person only ingested water.

Prolonged fasting is extremely dangerous because fatty tissues are degraded resulting in ketone bodies that are considered toxic and cross the blood-brain barrier.

Once the fat tissue reserve is completely finished, the body will enter into proteolysis of the body's own structural proteins in order to obtain energy, this is how the phenomenon of abrupt consumption of muscle tissue occurs.

Answer:

He separated the phages into radioactive sulfur-containing protein ghosts and radioactive phosphorus-containing DNA. They found that the radioactive sulfur protein ghosts could attach to bacterial membranes while the radioactive phosphorus DNA could not. Hope this helps!

Answer:

He separated the phages into radioactive sulfur-containing protein ghosts and radioactive phosphorus-containing DNA. They found that the radioactive sulfur protein ghosts could attach to bacterial membranes while the radioactive phosphorus DNA could not

Explanation:

The given statement “The temperature in # 3 is fresh water's temperature of maximum density” means that the temperature at point 3 has a density of maximum density compared to other points of fresh water. So, the temperature at point 3 is equal to fresh water's temperature of maximum density. Therefore, the answer is option b. equal to.

Water is known as the only substance on earth that exists in all three forms, i.e., solid, liquid, and gas. Moreover, the density of water is also unique compared to other substances. Density is the property of a substance that measures the relationship between the mass and volume of a substance. The density of water varies with temperature and pressure. So, the density of water is always higher than that of gases but lower than most solids.

The density of fresh water at standard atmospheric pressure is around 1000 kg/m³, whereas seawater has a density of around 1025 kg/m³ at the surface. The density of water at different temperatures: Water has a unique density-temperature relationship, meaning the density of water varies with temperature.

At 4 °C, fresh water has the highest density, and as the temperature rises or falls below this point, the density of water decreases. So, water has an anomalous density-temperature relationship. Hence, b is the correct option.

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Answer:

See below.

Explanation:

Organic fertilizer is more environmentally friendly and economical, but it comes at a different cost. These fertilizers are both harder to obtain and take more effort to formulate. Furthermore, these products are not created equally, meaning some of them may not work as well and have inconsistencies. Correspondingly, they are also lower in nutrients, meaning crops that rely on fertilizer will not grow as effectively and risk dying.

The correct answer is d. peristalsis, which moves digested food through the intestine. Commensal microorganisms in the gastrointestinal tract play an important role in maintaining gut health by facilitating several processes.

These include: a. Competition with pathogenic variants for nutrients and space: Commensal microorganisms compete with pathogenic microorganisms for nutrients and space in the gut, which helps to prevent the overgrowth of harmful bacteria. b. Conversion of toxic substances to benign derivatives: Commensal microorganisms are able to convert toxic substances in the gut, such as harmful bacterial toxins, into benign derivatives that are less harmful to the host.

Degradation of plant fibers to make their nutrients available: Commensal microorganisms are able to break down plant fibers and other complex carbohydrates into simpler sugars, which can be used as a source of energy for the host. Peristalsis, which moves digested food through the intestine: Commensal microorganisms do not have a direct effect on peristalsis, which is the movement of digested food through the intestine.

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Gross primary productivity is the total amount of organic matter that producers synthesize in the course of photosynthesis per unit of time and per unit of space (GPP).

In tropical regions, primary productivity is high and consistent throughout the year, but it is constrained by a cold temperature and a short growing season in temperate regions.

The tropics have the most sunlight, whilst the poles have the least. Due to this, net primary production (NPP) is highest in the tropics (>20 t ha 1 year) as opposed to the average (8 t ha 1 year) in temperate forests.

The synthesis of organic compounds from atmospheric or aqueous carbon dioxide is referred to as primary production in ecology.

Water for which productivity is to be assessed is confined in sealed white and dark bottles. Primary productivity can be measured from the amount of oxygen utilized by a volume of water in a defined amount of time (bottle painted dark so light would not enter).

Primary production, the lowest trophic level, provides vital nutrients and energy to higher trophic levels and higher organisms because it is the lowest trophic level.

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Answer:

White blood cells

Explanation:

Most pneumonia occurs when a breakdown in your body's natural defenses allows germs to invade and multiply within your lungs. To destroy the attacking organisms, white blood cells rapidly accumulate. Along with bacteria and fungi, they fill the air sacs within your lungs (alveoli).

The trait was that the parents were both heterozygous.

A dominant trait can have two different genotypes because the dominant allele masks the recessive allele. Dominant phenotypic traits are either homozygous dominant, where both alleles are dominant or heterozygosity, which is a genotype with one dominant allele and one recessive allele.

For plants, true reproduction occurs when a plant only produces offspring of the same variety when self-pollinated. For example, a blue-flowered plant produces only seeds, which grow into blue-flowered plants. With true reproduction, the trait is passed on to all subsequent generations. Crossing purebred P plants produces F1 heterozygotes that are capable of self-pollination. Self-crosses of the F1 generation can be analyzed.

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