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question 4
- 20 points

Answer:

The organism must have two recessive alleles of the same type. Recessive alleles are usually represented by a lower case letter.

Examples:

rr, hh, bb, aa

Explanation:

When a compound passes from the plasma to the CSF, it first goes through the extracellular matrix, then the astrocytes, then pericytes, then the capillary endothelium and finally to the CSF.

Cerebrospinal fluid or the CSF is a clear and colorless fluid which is found in the tissues which are present around the brain and the spinal cord. The blood brain barrier or the BBB is the network which consists of tissues and blood vessels which perform the function of keeping the harmful substances away from the brain.

When a particular compound passes from the plasma to CSF, it first has to pass through the extracellular matrix of the ECM. From the ECM, it goes to the astrocytes and then to the pericytes. The compound then passes to the capillary endothelium from where it finally reaches the CSF.

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Answer:  A. DNA is transcribed into RNA, which is translated into protein

Explanation:

The process of gene expression is the information from DNA is transcribed into RNA, then this RNA is translated into protein.

Gene expression is the process of directing protein synthesis by utilizing the genetic information encoded in genes (DNA). Gene expression enables organisms to develop various cell types and adapt to internal and external influences.

The process of gene excretion takes place in the cell nucleus and cytoplasm and is divided into two stages: transcription and translation.

DNA is employed in the transcription process to create copies in the form of mRNA. While translation is the process by which individual polypeptides are synthesized in the ribosome. Protein can be made up of one or more polypeptides.

Therefore, the information from DNA is transcribed into RNA, which is then translated into protein during the gene expression process.

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The correct response is (C) since it would help the hungry people. Cereal grains that have been genetically engineered offer several benefits for civilisation.

Both farmers and the poor would gain from a GM grain variety that can produce its own vitamins and is drought tolerant.

The multiple environmental challenges affecting agricultural output have been further exacerbated by drought. Even in the absence of much rain or water, crop varieties that are resistant to drought provide a high yield. In areas that are prone to drought, these kinds have generated a significant yield.

Vitamins are necessary for a healthy diet. They are necessary for many different bodily metabolic activities. Thus, including genes that code for the synthesis of vitamins in cereal grains such as rice aids in feeding the population that is undernourished.

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Full Question ;

A scientist genetically engineered a grain cereal. The genetically engineered variety can produce its own vitamins and is drought resistant. What is the likely impact of growing such a cereal crop on the society?

a. May trigger an adverse climate change

b. May worsen the water crisis around the world

c.Would be beneficial for the malnourished population

d. Would increase the shortage of food around the world

The Correct answer is Option D.Oxygen

According to Oparin, oxygen was not present in the primitive atmosphere of the Earth.

The chemical element with the atomic number 8 and symbol O is called oxygen. It belongs to the periodic table's chalcogen group, is a very reactive nonmetal, and an oxidising agent that easily produces oxides with most elements as well as other compounds. After hydrogen and helium, oxygen is the third most plentiful element in the universe and the most abundant element on Earth. Two atoms of the element combine to generate dioxygen, an odourless and colourless diatomic gas with the formula O 2 at standard pressure and temperature.

According to researchers at MIT, the Great Oxygenation Event (GOE), which is thought to have started as early as 2.33 billion years ago, was the beginning of oxygen's ongoing presence in the atmosphere.

Louis Pasteur wrote about his research in 1864, demonstrating that microbial life could not have developed spontaneously in the absence of preceding life. This work is regarded as a milestone in modern science as it resolved a long-running debate regarding spontaneous generation.

The concept of spontaneous genesis holds that live things could appear miraculously from inanimate matter.

But Pasteur's findings presented evolutionary biologists with a fresh conundrum: if life could only develop from life, how did living things first originate on the planet?

The solution was presented in the 1920s by A.I. Oparin of Russia and J.B.S. Haldane of England, who independently made compelling cases that the origin of life could be explained by a lengthy and gradual process of chemical evolution rather than by the rapid spontaneous generation of complete organisms in a matter of weeks.

An atmosphere developed when Earth cooled, primarily from gases released by volcanoes. It contained methane, hydrogen sulphide, and ten to 200 times as much carbon dioxide as the atmosphere we are surrounded by today. The Earth's surface began to cool and solidify after roughly 500 million years, allowing water to accumulate there.

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Their are various adaptation that helps snail to defend from predators that include cryptic coloration , thickened outer shell . They also produces mucous and irritating smells . They have quick hiding and withdrawal behaviors.

In general ,snails have a hard exoskeleton usually formed from crystalline calcium carbonate. these shells helps to protect snails from predators and some time extreme temperature. In addition they can also help with the defence against nematodes. These shells have many different structures like the one with spiral shapes helps for better hiding from predators .

Snails are also capable of regenerating the broken shell which is also an adaptation strategy .

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3. Transform plate boundary can be located at around 40°N latitude and 0° longitude. It is a Venezuela region which lies in between South American Plate and Caribbean Plate.

Large rock slabs called tectonic plates that separate the Earth's crust move constantly, changing the topography of the planet. According to the system of ideas behind the plate tectonics theory, the lithosphere, which makes up Earth's outer shell, is divided into many plates that move across the rocky inner layer of the planet above its soft core (mantle).

The line dividing two plates is referred to as a tectonic plate boundary. The tectonic plates are constantly and slowly shifting, but they do so in numerous directions. Some are travelling past each other while others are moving in opposite directions.

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Answer:A, B and E

Explanation: lipid:fatty acid, protein: amino acid and carbohydrate: monosaccharides

(Did this in UsaTestPrep)

The correct biomolecule and monomer pair are as follows:

BIOMOLECULES:

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Question: Why are tood deserts dangerous to a community.

Explanation:

In food deserts, healthy foods like fruits, vegetables, whole grains, dairy, peas, beans,meat ,and fish are often expensive or unobtainable

The lack of access to healthily foods in these communities translates to health disparities and high rates of chronic disease

Answer:

this is only what I know

Explanation:

Without access to healthy foods and people living in food deserts may be a higher risk of diet-related conditions as such as obesity, diabetes and even worse is that cardiovascular disease

Answer: Gravity: If you spend a lot of time sitting or standing in one place for too long, water naturally pulls down into your arms, legs and feet

Answer:

I'm pretty sure it would be about 25% chance but i could be long

Explanation:

im sorry if this is wrong

the answer to your question is yes

Answer:

what do the numbers mean?

Explanation:

Answer:

Its 0.10

Explanation:

I just took the assignment

In contrast to transporters, ion channels in cellular membranes can only mediate passive transport form pores.

Only in order to open a membrane pore that enables a certain ion into the membrane do channel proteins undergo a conformation in the membrane. In contrast to carrier proteins, the ion will only move along its concentration gradient. It has been discovered that all membrane transport proteins that have been in-depth study are multipass transmembrane proteins, meaning that their transporters chains repeatedly pass through the lipid bilayer.  These proteins allow certain hydrophilic solutes to traverse the membrane without coming into touch with the hydrophobic interior of the lipid bilayer by establishing a continuous protein pathway across the membrane.

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Answer:

The independent variable belongs on the x-axis (horizontal line) of the graph and the dependent variable belongs on the y-axis (vertical line).

Answer:

Su bebé crecerá más y aumentará de peso más rápido. Sus órganos y partes del cuerpo continuarán desarrollándose. Las uñas de las manos y los pies comienzan a formarse y los riñones comienzan a funcionar. Al final del primer trimestre, su bebé ha triplicado su longitud a aproximadamente 3 pulgadas de largo.

Answer:

Hemophilia is a hereditary bleeding disorder caused by a deficiency in one of two blood clotting factors: factor VIII or factor IX. Several different gene abnormalities can cause the disorder.

Explanation:

An insertion and deletion mutation is called as a frameshift mutation .

An insertion is a point mutation in which one or more base pairs is added to a DNA sequence. Point mutations is further divided into silent mutations, missense mutations, and nonsense mutations.

Frameshift mutation is considered as a genetic mutation caused by a deletion or insertion in a DNA sequence. This kind of mutation shifts the way the sequence is read. diseases like cystic fibrosis is a result of frameshift mutation that alters the CFTR gene. The harshness of frameshift mutation is reliant on the number of nucleotides and the position of insertion of nucleotides.

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The cell bursts when the cell wall of a plant cell is removed by a certain way, then put in distilled water because the cell wall is removed, the cell would get wet, which would cause it to burst..

Putting a plant cell in distilled water causes it to become turgid. This is due to a process called osmosis, which causes the plant cell's cytoplasm to swell up and firmly press up against the cell wall as it absorbs water from the hypotonic distilled water.

Cell walls stop excessive endosmosis from happening when water enters the cell, which also prevents plant cells from bursting. If the cell wall were to be broken, water would enter the space and the cell would eventually burst.

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It is not advised to stop compressions after administering an epinephrine dose. Every two minutes, the American Heart Association advises stopping compressions to check for the resumption of circulation.

Evidence of what is most effective in reviving patients serves as the foundation for resuscitative care. Best practices for resuscitative care have been outlined in recommendations created by the American Heart Association.

Cardiopulmonary Resuscitation (CPR):

For a person whose heart has stopped, CPR is a technique that involves chest compressions and help breathing.

Although there is a minimal possibility that CPR will restart an arrested heart, it is a tried-and-true technology that saves many lives each year.

In order to ensure that the most people can be saved, the CPR recommendations are consistently reviewed and revised as new knowledge about best procedures becomes available.

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Answer:

Force acting on the plane = 87,500 N

Explanation:

Given:

Mass of airplane = 25,000 kilogram

Acceleration of plane = 3.5 m/s²

Find:

Force acting on the plane

Computation:

⇒ Force = Mass x acceleration

⇒ Force acting on the plane = Mass of airplane x Acceleration of plane

⇒ Force acting on the plane = 25,000 x 3.5

Force acting on the plane = 87,500 N

Due to their ability to blend in with their surroundings, White Rabbits are more likely to survive than Brown Rabbits.

The process through which populations of living things adapt and change is known as natural selection. A population's members are naturally varied, which means that they are all distinctive in some ways.

Resources are necessary for a species' growth and survival, therefore if there aren't enough of them to support each member of the species, they can't reproduce.

The adaptations that could affect a person's likelihood of survival are sharp teeth, rough skin, or claws to fight off predators. These adaptations stop them from killing.

As a result, we can draw the conclusion that white rabbits are more likely to survive than brown ones do because they can blend in better with the environment's light colours.

Thus, this can be the summary of the given scenario.

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Answer: There is no single ultimate authority on ethical issues, and different individuals and groups may have different approaches and sources of guidance for resolving them. The resolution may depend on the context, values, and beliefs of those involved.

Explanation:
(⌐■_■)

Risk is defined as the probability of an event and its result. The following is a common formula of calculation of risk: Risk = Impact × Likelihood.

Risk can be defined as the chance that anything negative will occur. Risk is the unpredictable impact a choice will have on anything important to people (such as their health, well-being, wealth, property, or the environment), with a propensity for being detrimental. There have been many original interpretations put forth. "Effect of Uncertainty on Objectives" is the globally accepted definition of risk for use in a variety of applications.

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During sexual reproduction, two gametes (sex cells) fuse to create a fertilized cell (zygote) with a complete set of chromosomes. What must be true about the number of chromosomes in each gamete is only one set of chromosomes.

Sexual reproduction is a way of developing living things by combining genetic information from two individuals of different sexes through the process of fertilization. Fertilization occurs when an egg and sperm cell meet to produce a zygote.

Chromosomes are a group of fine threads in cells that function as carriers and stores of genetic information in living things. Gamete cells have one set of chromosomes (haploid) consisting of 23 chromosomes with the composition of sperm cells 22 A + X or 22 A + Y and ovum cells: 22 A + X

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The energy available at the top of the pyramid is a small percentage of the energy present at the bottom of the pyramid because of the process of energy transfer.

As energy flows up the pyramid, each level of the pyramid takes in energy from the level below and uses it to produce its own energy. This energy transfer is not 100% efficient, so some energy is lost at each level. By the time the energy reaches the top of the pyramid, the amount of available energy is greatly reduced.

Additionally, the organisms at the top of the pyramid have to use energy to stay alive and move around, so there is even less energy left to transfer to the next level. This is why the energy available at the top of the pyramid is so much smaller than the energy present at the bottom.

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Answer:

Pilus.

Explicación:

Pilus es la estructura que se encarga de transferir el plásmido entre las células bacterianas. Un pilus es un apéndice con forma de cabello que se encuentra en la superficie de muchas bacterias y arqueas. Esta estructura de pilus es responsable de la transferencia de plásmido de una célula a otra. Esta transferencia de plásmido de una célula bacteriana a otra se llama conjugación bacteriana, por lo que podemos concluir que el pilus es la estructura o apéndices que causa la transferencia de plásmido.

Answer:

d) biodiversity increases as you move from the Earth's poles toward the equator.

Explanation:

i took the test

The meaning of the term latitudinal gradient is that biodiversity increases as you move from the Earth’s pole toward the equator. The correct option is d.

A latitudinal gradient shows the pattern of distribution of biodiversity in a geographical area. It tells where the species increase or decrease within the areas.

The latitudinal gradient tells that toward the tropic areas, the biodiversity of the terrestrial and marine ecosystems increases. The tropics is the area of tropic of cancer in the Northern Hemisphere and the tropic of Capricorn in the Southern Hemisphere.

Thus, the correct option is d) Biodiversity increases as you move from the Earth’s pole toward the equator.

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