Sickle Cell anemia is a disease caused by a recessive allele. What is the chance a child will have Sickle Cell if one parent has it, and the
other parent does not and is homozygous
A. 100%
B.33%
C.0%
D. 75%

Answer:

Mitosis

:Sorry if i'm wrong

Answer:

Mitosis

Explanation:

Replacement and regeneration of new cells regeneration and replacement of worn-out and damaged tissues is a very important function of mitosis in living organisms. Mitosis helps in the production of identical copies of cells and thus helps in repairing the damaged tissue or replacing the worn-out cells.

Continuing to use Fresh Kills Landfill as a landfill is not an adequate waste management strategy because residents will be exposed to hazardous pollution from the landfill.

A landfill is a space set aside for disposing refuse by burying it underground. Usually, a landfill is sited away from a residential area so that people do not suffer from the hazardous wastes emanating from the landfill.

In this case, residents now live at the very edge of the landfill which exposes them to the hazardous wastes emanating from the landfill.

Therefore, it is not an adequate waste management strategy to continuing to use Fresh Kills Landfill.

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Answer:

It’s D

Explanation:

I hope this helps and i go to FLVS

The two similarities between chromosomes that you get from your parents are Genetic Material and Number of Chromosomes.

In terms of Number of chromosomes: Every Humans have 23 pairs of chromosomes, for a total of 46 chromosomes. Each parent contributes 23 chromosomes to their child, for a total of 46.

in tems of Genetic material: The chromosomes that you get from your parents contain the same genetic material. This is why you look like your parents and why you have inherited some of their traits.

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Answer:

At the end of one cell cycle, a cell with 10 chromosomes will divide into two daughter cells, each with 10 chromosomes.

After 2 cell cycles:

One cell divides into two, so there are now 2 cells.

Each of those two cells divide into two, so there are now 4 cells.

Each of those four cells divide into two, so there are now 8 cells.

After 3 cell cycles:

One cell divides into two, so there are now 16 cells.

Each of those 16 cells divide into two, so there are now 32 cells.

Each of those 32 cells divide into two, so there are now 64 cells.

So at the end of 3 cell cycles, there are 64 daughter cells.

Each daughter cell will have 10 chromosomes, since the number of chromosomes did not change during the cell cycles.

Explanation:

DNA replication is the process of a cell or bacterium making copies, or replicating its DNA/Genetic Material to prepare for cell division.

Yep, it is exactly what it sounds like!

~~~Harsha~~~

From the given graph it can be inferred that in the growth of Spirulina platensis alga, over a period of five days maximum biomass was produced at a light intensity of 2000 lux. So the light levels that would be optimum to use in a bioreactor would be 2000lux. Option C is correct.

Spirulina platensis is a microalgae. It is used to produce several fine chemicals. It is used in industries to produce proteins, vitamins, Beta-carotene, phycocyanin, and linolenic acid. It is also a great source of nutraceuticals.

The most crucial variables for the large-scale production of Spirulina biomass are nutrient availability, temperature, and light. Spirulina platensis has a high economic importance due to the production of a variety of pigments and nutraceuticals.

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The given question is incomplete. the most probable question is:

1. In many situations, algal reproduction is affected by external conditions. Look at this graph of hypothetical data that compares the growth rate of S. platensis over a period of 5 days when exposed to different light levels. Given these data, what light levels would you use for a bioreactor containing this species?

Options:

A. 500 lux

B. 1000 lux

C. 2000 lux

D. 3000 lux

Answer:

beesechurger

Explanation:

Answer:

Cellular Respiration

As you all know, cellular respiration is one of the, if not the, most important process that goes on in our bodies and other animals' bodies today. Cellular respiration is the process that is opposite from photosynthesis. While plants are taking in carbon dioxide and water to make sugar and oxygen, cellular respiration uses the oxygen and sugar o make carbon dioxide, water and 36 ATP. The three "mini processes" that take place during cellular respiration are glycolysis, oxidative respiration, and the electron transport chain. Fermentation also occurs in some cases where there is no oxygen present.

Glycolysis is the first stage in cellular respiration. It starts with a six-carbon glucose. Then, two ATP come and are converted to two ADP and two phosphates. Those same phosphates are added to the glucose to make a six-carbon glucose phosphate. That is then divided into two 3-carbon sugar phosphates. ADP comes and leaves charged as ATP because of the phosphate. Without the phosphates the process finishes with two 3-carbon piruvates.

If there is no oxygen present after glycolysis, then the next process is fermentation. Fermentation takes the 3-carbon piruvates from glycolysis and adds and electron to them. The result is lactic acid in animals and ethyl alcohol and carbon dioxide from plants, yeast and fungi. Oxygen can then be added back to the lactic acid to form piruvate again.

After glycolysis or after the oxygen is added back to lactic acid from fermentation, the oxidative respiration, also known as the Krebs cycle, takes place. The 3-carbon piruvates are converted to acetyl-CoA. That is then turned into a 6-carbon citrate. After an electron is added to NAD+ to turn it into NADH, a 5-carbon molecule is formed. Then it turns into a 4-carbon molecule which is then recycled.

The electron transport chain is occurring the whole time that cellular respiration is taking place. It starts with a NADH and a FADH2. Electrons and hydrogen ions are added until the final results are NAD and 2H which yields 32ATP and turns O2 into H2O.

Over all there is 2ATP made during glycolysis, 2ATP made during Krebs cycle, and 32ATP made during the electron transport chain for a grand total of 36ATP!!! After all these products are made they are then converted back by photosynthesis and the cycle goes on and on and on.

Answer:

The smallest planet in our solar system is Mercury. It has a radius of 1,516 miles (2,440 km), which is about 1/3 the size of Earth. Mercury is also the closest planet to the Sun. It takes Mercury 88 Earth days to orbit the Sun, but only 59 Earth days to rotate on its axis. This means that Mercury has a day that is longer than its year.

Mercury is a very hot planet, with surface temperatures reaching up to 800 degrees Fahrenheit (427 degrees Celsius). This is because Mercury has no atmosphere to protect it from the Sun's heat. Mercury also has a very thin atmosphere, which is made up of hydrogen, helium, and oxygen.

Mercury is a very interesting planet, and scientists are still learning about it. In 2011, NASA's Messenger spacecraft became the first spacecraft to orbit Mercury. Messenger spent four years in orbit, studying Mercury's surface, atmosphere, and magnetic field. The data collected by Messenger has helped scientists to better understand this small, but fascinating planet.

Explanation:

Or pluto/ dwarf planet

Carbon dioxide is easily excluded in proteins that bind oxygen, such as myoglobin, due to its slight size difference. However, in rubisco, an oxygen molecule can easily bind in the location intended to bind to carbon dioxide. The oxygen is then added by Rubisco to the sugar chain, creating an improperly oxygenated product.

The oxidative photosynthetic carbon cycle, also known as the C2 cycle or photorespiration, is a process in plant metabolism where the enzyme RuBisCO oxygenates RuBP, wasting some of the energy produced by photosynthesis.

RuBisCO aids in the Calvin-Benson cycle's CO2 fixation (carboxylation), but it also fixes O2. The latter reaction is where photorespiration begins.

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As opposed to protists, all plants are non mobile. So, the correct option is (C).

A protist is defined as a eukaryotic organism that is not an animal, plant or fungus that shares a common ancestor, the exclusion of other eukaryotes means that protists do not form a natural group or clade.

Protists are primarily unicellular microscopic organisms that may share some morphological and physiological characteristics with animals or plants or both.

Protozoa, algae, and slime molds are some examples of members of the kingdom Protista, a highly heterogeneous collection of microbial eukaryotes where many protists show at least some similarity to each other.

Thus, as opposed to protists, all plants are non mobile. So, the correct option is (C).

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The correct statement is: With channel proteins, molecules or ions flow passively through the protein from high concentration to low concentration.

Neither channel proteins nor carrier proteins themselves flow or move in any direction. They are static structures that are embedded within the cell membrane and act as conduits or gates for the movement of specific molecules or ions across the membrane.

The movement of molecules or ions through these proteins depends on their concentration gradient. Channel proteins allow the passive flow of ions/molecules from high concentration to low concentration, while carrier proteins can facilitate both passive and active transport of molecules across the membrane. In active transport, molecules move from low concentration to high concentration, and this process requires the expenditure of energy (in the form of ATP).

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Answer:

a

Explanation:

Answer:

A.

Explanation:

During DNA replication (S phase), the chromosomes are duplicated, resulting in 16 sister chromatids. During metaphase, the sister chromatids align along the equatorial plane of the cell. During anaphase, the sister chromatids separate and move towards opposite poles of the cell, ensuring that each new cell receives a complete set of 8 chromosomes.

During mitosis, the process by which cells divide, the division of chromosomes occurs in a way that maintains the correct number of chromosomes in each resulting cell. The scenario you mentioned, where one cell with 8 chromosomes divides to form two cells each with 8 chromosomes, is possible due to three key events and their associated cell cycle phases:

DNA Replication (S Phase): Before mitosis begins, the DNA in the cell undergoes replication during the S phase of the cell cycle. This means that each chromosome replicates, resulting in two identical copies called sister chromatids. So, in the initial cell with 8 chromosomes, during S phase, each chromosome is duplicated, resulting in a total of 16 chromatids.

Chromosome Alignment and Separation (Metaphase and Anaphase): During metaphase, the replicated chromosomes align along the equatorial plane of the cell. The sister chromatids are connected at a region called the centromere. In anaphase, the centromeres split, and the sister chromatids separate, becoming individual chromosomes. The spindle fibers pull the separated chromosomes towards opposite poles of the cell.

Cytokinesis: After the chromosomes have separated, cytokinesis occurs, where the cell membrane pinches inward, dividing the cytoplasm into two distinct cells. Each new cell receives a set of chromosomes, resulting in two daughter cells, each with the same number of chromosomes as the original cell (8 chromosomes each).

Overall, through the processes of DNA replication, chromosome alignment and separation, and cytokinesis, the division of chromosomes during mitosis ensures that the resulting daughter cells maintain the correct number of chromosomes.

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Independent variable is the variable that is changed or manipulated in a series of experiments. According to this question, the amount of sugar is the independent variable because it is changed.

Dependent variable is the outcome measured to see the effectiveness of the treatment. According to this question, the amount of respiration undergone by the yeast cell is measured.

Control variable is the variable that is kept constant throughout the experiment. In this experiment, the type of yeast is the constant.

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Competition occurs among members of the same species and  between members of different species.

More broadly, competition can be described as the direct or indirect contact of organisms that results in a change in fitness when the organisms share a resource. Competition is most commonly thought of as the interaction of individuals that compete for a common resource that is in limited supply. The weaker competitors frequently suffer as a result of the outcome. The three main types of competition are as follows. Real competition is defined as two of them: interference competition and exploitation competition. Evident competition, a third form, is not. While exploitation competition and seeming competition take place between people in an indirect manner, interference competition happens between people directly.

Interactions are seen as interference competition when one person directly changes another person's resource-attaining behavior. For instance, a dominant male directly affects the mating behavior of other males when he prevents other males from approaching a partner by physical aggressiveness or aggressive displays.

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Trichoplax adhaerens is a small, flattened, and ciliated animal belonging to Placozoa phylum. Its body is a few millimeters in size and has a simple, two-layered structure, with an outer layer of cover cells and an inner layer of cylinder cells.

Thus, the different structures of Trichoplax adhaerens include dorsal surface which is the upper surface facing upward.  Then, cover cells are present which is the outermost layer of cells that cover the animal body.

Ventral surface in Trichoplax adhaerens is the lower surface of the animal facing downward. Cylinder cells are the inner layer of cells lining the digestive cavity of the animal.

Gland cells are the cells that secrete enzymes for digestion in Trichoplax adhaerens. Fiber cells help to maintain the shape of the animal and cilia are hair-like structures covering the surface of the animal.

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Answer:

The helicase is essential because they separate the double-stranded DNA into single strands so that it could be copied.

Hoped this helped!

Activities that take place on forest land can vary greatly and may include hiking, fishing, hunting, reading, taking pictures, camping, rock climbing, skiing, snowmobiling, logging, grazing, or mining. Here's a discussion of the questions you raised:

1. Cost to provide on forest land: Activities like logging, mining, and skiing/snowmobiling typically require infrastructure development, equipment, maintenance, and personnel, making them relatively expensive to provide on forest land.

2. Attracting visitors: Hiking, camping, fishing, and wildlife viewing tend to attract a significant number of visitors due to their accessibility, affordability, and recreational appeal.

3. Impact on forest ecosystem and wildlife: Logging, mining, and grazing have the greatest impact on the forest ecosystem. Logging involves the removal of trees, potentially altering the forest structure and disrupting habitats. Mining can lead to soil erosion, habitat destruction, and water pollution. Grazing by livestock can degrade vegetation and impact native wildlife habitats.

4. Duration of the impact: The impact of activities like logging, mining, and grazing can have long-term or even permanent effects on the forest ecosystem, particularly if they are not carried out sustainably or with proper mitigation measures.

5. Fragmentation: Activities like logging and mining can cause fragmentation by creating clearings or dividing the land into smaller patches. This fragmentation can disrupt wildlife movement, alter ecological connectivity, and reduce biodiversity.

6. Meeting critical societal needs: While activities like logging and mining may provide resources and contribute to economic needs, activities such as hiking, fishing, and wildlife conservation fulfill critical societal needs related to recreation, nature appreciation, and environmental conservation.

It's important to consider a balanced approach to land use planning and management, taking into account the diverse interests and impacts associated with various activities. This involves considering sustainable practices, mitigating negative impacts, and protecting the long-term health and integrity of forest ecosystems and wildlife populations.

Answer:

To a 1st Grader:  

Carbon is the magic element that is the basis of life on Earth. All living things contain carbon. Animals breathe it out, and plants breathe it in. Plants, people and animals depend on each other.

The carbon cycle is a process where carbon dioxide travels from the atmosphere into living organisms and the Earth, then back into the atmosphere. Plants take carbon dioxide from the air along with water and photosynthesis from the sun and use it to make food.

Explanation:

The carbon cycle is the biogeochemical cycle by which carbon is exchanged among the biosphere, pedosphere, geosphere, hydrosphere, and atmosphere of the Earth. Carbon is the main component of biological compounds as well as a major component of many minerals such as limestone.  To a first grader is different because they wouldn't understand what half of these words mean lol.

The carbon cycle is the biogeochemical cycle that exchanges carbon between the Earth's biosphere, parallel layers, geosphere, hydrosphere, and atmosphere.

The carbon cycle is nature's method of recycling carbon atoms, which travel from the atmosphere into organisms on Earth and then back into the atmosphere.

The majority of carbon is stored in rocks and sediments, with the remainder in the ocean, atmosphere, and living organisms.

The carbon cycle is critical to the survival of life on Earth. Nature has a tendency to maintain carbon levels in balance.

This means that the amount of carbon naturally released from reservoirs equals the amount naturally absorbed by reservoirs. Maintaining this carbon balance ensures that the planet remains habitable for life.

Thus, by regulating the rate of carbon dioxide in the atmosphere, the carbon cycle plays an important role in regulating Earth's global temperature and climate.

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Answer:

b

Explanation:

Answer:

Ecology

Explanation:

Answer:

Recycling is the process of converting waste materials into new materials and objects.It is an alternative to "conventional" waste disposal that can save material and help lower greenhouse gas emissions.

When hazardous wastes are recycled, less energy is needed to obtain raw materials and to manufacture products. When energy demand decreases, fewer fossil fuels are burned and less GHGs are emitted into the atmosphere, which can help lessen the impacts of climate change and decrease air pollution.

Answer:

The process of converting waste materials into reusable material is called recycling.When hazardous wastes are recycled, less energy is needed to obtain raw materials and to manufacture products. ... This means less need for hazardous waste landfills and incinerators, as well as a decrease in energy used for those systems, which leads to less pollution

14. The type of trait described in the image provided is referred to as sex-linked trait. The gene's location is on a sex chromosome. The reason why the concentration of the genes falls on the female side because a female carries X chromosome. This type of trait influence X chromosome. X chromosome is characterized as large with higher number of genes compared to Y chromosome.

The concepts of genetic recombination, the production of more offspring, and surviving the challenges of the environment are associated with natural selection.

Natural selection describes the adaptation and modification of populations of living things.

Members of a population are inherently varied, which means they differ in certain respects. Because of these differences, some individuals can be better suited for their surroundings, which is very important in enhancing the chances of surviving and increasing the chances of reproducing as well, thus passing on their adaptive features to their progeny. These beneficial features grow increasingly prevalent in the population over time. 

The differences in traits can be explained by changes in the structure of the molecules that make up genes (DNA) are known as mutations. Mutations can occur at random (for example, when replicating cells make a mistake while duplicating DNA) or as a result of exposure to toxic substances or radiation in the environment.

Mutations can be damaging, neutral, or even beneficial, leading to the development of a new, beneficial characteristic. Mutations can be handed on to children when they arise in germ cells.

These processes are all important for the evolution of species.

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For the listed factors, (1) No (2) Yes (3) No (4) Yes (5) No are the correct answers.

Populations of living things change and adapt through a process called natural selection. People in a community are naturally diverse, which means that each individual is unique in certain aspects. Because of this variety, some people have characteristics that suit their surroundings more than others.

Resources are scarce, therefore more creatures are created than can survive. Some organisms will do better than others at locating food, attracting mates, or avoiding predators, giving them a better chance to flourish, procreate, and pass on their DNA.

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Answer:

Bitumious Coal

Explanation:

Because it's important in generation of electricity and it's raw materialistic behavior it's set to be the most abundant one. It accounts about 45% coal in the whole United States