Place the steps of Vitamin B-12 absorption in the correct order
1. Cleavage food bound of Vitamin B-12
2. Secretion of intrinsic factor by stomach cell
3. Formation of intrinsic factor/B-12 complex
4. Absorption of Vitamin B-12

Answer:

protozoan i toook test mate

Explanation:

This process will be important to you as an evolutionary biologist because, while being an unpleasant sensation, pain serves as a helpful adaptation rather than a sickness. In this case, option A is correct.

Movement is restricted and muscle activity is altered by pain to prevent additional damage to the sensory-motor system.

Signals produced by touch receptors in your skin serve as the basis for sensations. They move along sensory receptors, which are made up of bundled fibers connected to spinal cord neurons. The thalamus receives messages after that and transmits them to the remainder of the brain.

After traveling along a sensory neuron, the impulse is received by the spinal cord. The impulse travels across a synapse between a spinal cord nerve cell and a sensory neuron. The impulse enters the brain stem nerve cell solely on a single side of the cord, where it then proceeds to the other.

Complete question:

A brilliant scientist has come up with a procedure that blocks sensory receptors in our skin from sending signals to the spinal cord and brainstem so that people no longer have to feel physical pain. As an evolutionary biologist, why would this procedure be concerning to you? Group of answer choices

A - Although pain is an unpleasant experience, it is a beneficial adaptation rather than a malady.

B - No pain no gain Without pain, women would be more likely have offspring which increases their fitness

C - Pain makes us more vulnerable to harm

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In order for transcription to begin, cis-acting elements and trans-acting factors must interact in both bacteria and eukaryotes. The two groups' approaches to controlling gene regulation at this level, however, differ significantly.

The RNA polymerase component in bacteria recognizes promoters and controls specificity. Activators and repressors can affect how RNA polymerase recognizes promoters by binding to specific locations nearby. Large DNA loops are also created, joining promoters, enhancers, and silencers together. Repressor proteins cause repression loops, which alter the DNA's structure and inhibit RNA polymerase from attaching to promoters.

In eukaryotes, transcriptional control is more complex. Activators and repressors bind to enhancers and silencers, respectively, which are located upstream of the promoter. Chromatin structure may need to be modulated by chromatin remodeling, histone modifications, or DNA modifications to make the promoter accessible.

RNA polymerase II recognizes promoters and initiates transcription, but the initiation requires the formation of a pre-initiation complex that includes transcription factors and RNA polymerase II.

In summary, while both bacteria and eukaryotes use cis-acting elements and trans-acting factors to regulate transcription initiation, the control mechanisms are different and more complex in eukaryotes. Eukaryotic regulation involves chromatin modifications, enhancer and silencer elements, and the formation of a pre-initiation complex.

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Steroid hormones derived from amino acids are poorly soluble in water, similar to steroid hormones.

A class of hormones known as steroid hormones is produced from cholesterol and function in the body as chemical messengers. Numerous physiological functions, including the growth and operation of the reproductive system, are regulated by steroid hormones.

The cyclical chemical compounds known as steroid hormones, which are composed of rings of carbon atoms, are crucial for a variety of physiological processes, including growth, growth, energy metabolism, homeostasis, and reproduction.

A steroid hormonal is a steroid that has hormone-like properties. Sex hormones such as androgens, estrogens, and progesterones, corticosteroids such as glucocorticoids and mineralocorticoids, and anabolic steroids are all examples of steroid hormones.

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Thyroid hormones derived from amino acids are poorly soluble in water, similar to steroid hormones

Thyroid hormones and steroid hormones are generally lipid soluble hormones. They can't dissolve in water. Steroid hormones are produced from cholesterol and function in the body as chemical messengers. They control various physiological functions, including the growth and operation of the reproductive system.

Steroid hormones includes S.e.x hormones such as androgens, estrogens, and progesterone, corticosteroids such as glucocorticoids and mineralocorticoids, and anabolic steroids are all examples of steroid hormones.

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The one Distinguishing feature of each of the four major divisions is Cenozoic era which is the present era humans appear.

Cenozoic era is the time period in which we are living and they are also known as present era of the human beings as well as human appears. Mesozoic era is defined as the time period or age in which dinosaurs were found and in that age mammals and birds starts to appear.

Paleozoic era is defined as the period of time during which a large number of animals, corals, sponges, trilobites as well as corals including fish and sharks appears at first time. Air breathing animals and plants went to the land with insects and the large or big salamanders.

Therefore, The one Distinguishing feature of each of the four major divisions is Cenozoic era which is the present era humans appear.

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Answer:

use this to help you I'm sure you're teacher already reached you how to used this.

A population is a group of organisms of the same species that live in the same place.

A community is a group of populations that live in the same place.

An ecosystem is the interaction of biotic and abiotic factors in one delimited area.

The biosphere is the global ecosystem.

Because the guppies are organisms of the same species, they are a population.

The menstrual cycle are menstruation, have the follicular phase, ovulation and the luteal phase.

Common menstrual problems have heavy or sore periods and premenstrual syndrome (PMS).

When in the menstrual cycle a woman is Considered as likely to conceive can improve the possibility of pregnancy.

Thus, have the follicular phase, ovulation and the luteal phase.

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Answer:

B

Explanation:

When Courtney and Kenzie submitted their results to a journal for publication, scientists criticized the experiment. The experiment would need to be changed so that scientists might accept their findings by having several more tanks of fish.

Why would they need to change their experiment? Scientists criticized the experiment because it is not possible to determine which fish food gives their fish more energy just from two tanks of fish. Having more tanks of fish would mean that the study is more precise and closer to what could happen in the real world. This will result in more precise findings to support or reject the hypothesis that the fish food gives their fish more energy. Therefore, it can be concluded that C) There would need to be several more tanks of fish is the correct option.

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Serum HCG (human chorionic gonadotropin) can typically be detected in maternal blood shortly after implantation occurs. Implantation usually happens around 6 to 12 days after fertilization.

Once implantation occurs, the developing embryo begins to produce hCG, which can be detected in the mother's blood.

The timing of hCG detection in maternal blood can vary depending on factors such as the sensitivity of the pregnancy test being used and the individual's hCG levels.

Generally, hCG can be detected in the maternal blood as early as 8 to 11 days after ovulation.

It's important to note that the concentration of hCG in the blood increases rapidly during early pregnancy, doubling approximately every 48 to 72 hours.

This exponential increase in hCG levels allows for its detection in maternal blood and urine, making it a key marker for confirming pregnancy.

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In general, the dorsolateral corticospinal tract controls the muscles of the limbs, particularly the distal muscles involved in fine motor control and skilled movements.

The corticospinal tract is a major pathway that connects the cerebral cortex, specifically the motor areas, with the spinal cord. It plays a crucial role in voluntary movement and motor control. The dorsolateral corticospinal tract refers to the lateral portion of the corticospinal tract, which originates from the primary motor cortex and adjacent areas in the frontal lobe. This tract descends through the internal capsule and brainstem before crossing over to the contralateral side in the medulla, forming the pyramidal decussation. From there, it continues down the spinal cord and terminates in the ventral horn, where it synapses with lower motor neurons that innervate the muscles.

The dorsolateral corticospinal tract predominantly controls the muscles involved in skilled movements of the limbs, such as reaching, grasping, and manipulating objects. It provides precise and fine motor control, allowing for intricate movements of the fingers, hands, arms, and legs.

The control of distal muscles by the dorsolateral corticospinal tract reflects the organization of the motor cortex, where the somatotopic arrangement allocates specific areas for the control of different body regions. The cortical neurons that project through this tract are responsible for activating and modulating the motor output to the distal limb muscles.

In summary, the dorsolateral corticospinal tract primarily controls the muscles of the limbs, specifically the distal muscles involved in skilled movements. It plays a significant role in fine motor control, allowing for precise and coordinated movements of the fingers, hands, arms, and legs.

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Answer:

Fossils can be formed by Freezing,Drying

Explanation:

it is a long but interesting process

Tarsiers have several unique anatomical traits that set them apart from other primates. One such feature is their huge eyes, which are the largest relative to body size of any mammal.

These enormous eyes give tarsiers exceptional visual acuity and allow them to hunt insects in complete darkness. Additionally, tarsiers have an elongated tarsal bone in their ankle, which gives them the ability to leap up to 40 times their body length. This anatomical adaptation is crucial for their survival in their forest habitats, where they must quickly move between branches to avoid predators and catch prey.

Another unique anatomical trait of tarsiers is their dental formula, which differs from that of other primates. Tarsiers have fewer teeth than most primates, with only two incisors and one premolar on each side of their jaw, which are adapted for catching and eating insects. Overall, tarsiers' unique anatomical features allow them to thrive in their specialized arboreal habitats and make them one of the most distinctive and fascinating primates in the world.

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Answer:

The natural blind spot is due to lack of receptors where the optic nerve and blood vessels leave the eye. There can also be artificial blind spots when something blocks light from reaching the photoreceptors, or when there is local adaptation of the retina as just after seeing a bright light

Explanation:

It was correct.

Answer:

Because there is bacteria and plants and monocell and there are viruses wich is living organism and non living organism at the same time

Answer:

interaction between two different organisms living in close physical association, typically to the advantage of both.Compare with antibiosis.

a mutually beneficial relationship between different people or groups.

Explanation:

The opposition to golden rice is primarily political rather than scientific. Golden rice is a genetically modified variety of rice that has been developed to produce beta-carotene, a precursor of vitamin A.

Vitamin A deficiency is a significant public health problem in many developing countries, particularly in areas where rice is a staple food and access to diverse diets is limited. Scientifically, golden rice has been engineered to address this nutritional deficiency by providing a source of vitamin A. It has undergone extensive testing to ensure its safety for consumption, and multiple studies have demonstrated its effectiveness in raising vitamin A levels in deficient populations.

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Answer:

Exponential growth assumes that environmental factors like food, water supply, space, shelter, disease organisms, predators, weather conditions, and natural disasters do not affect the birth or death rate. As long as birth rate exceeds death rate (even slightly) population size will increase exponentially.

Explanation:

I'm not sure but hope it helps!

Explanation:

B. to break down food so that it can be used by the body

The diagram shows the digestive system of humans system. The main function of this system is to break down food so that it can be used by the body. The correct option is B.

The digestive system is the system that starts from the mouth to the intestine of the body. It includes the esophagus, liver, intestines, and small and large intestines, pancreas, etc.

This system is responsible for breaking down food material, and this breaking down release energy. This system provides energy to the body. This system contains enzymes and acids that break the food into small forms and release energy in the bloodstream of body.

Therefore, the correct option is B. to break down food so that it can be used by the body.

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Answer:

I think the answer is B they all reflect light rays to form an image

Answer:

B

Explanation:

All mirrors reflect light rays, resulting in a "mirror" image. Concave mirrors reflect the rays so they converge, while convex mirrors reflect light so they diverge. This results in the different images that are seen in these types of mirrors.

Answer:

B-Heat flow out

Explanation:

When you change the amount of greenhouse gases the factor you expect to change is Heat flow out.

What is greenhouse gases?

The main greenhouse gases whose concentrations are rising are carbon dioxide, methane, nitrous oxide, hydrochlorofluorocarbons (HCFCs), hydrofluorocarbons (HFCs) and ozone in the lower atmosphere.

How many greenhouse gases are there?

There are ten primary GHGs; of these, water vapor (H2O), carbon dioxide (CO2), methane (CH4), and nitrous oxide (N2O) are naturally occurring.

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Answer: The glass pane absorbs and re-radiates all of the infrared photons. The glass pane absorbs all invisible photons as well as visible photons. The glass pane transmits all invisible photons as well as visible photons.

To eliminate all non-transformed bacteria so that only transformed bacteria would grow in the LB plates, the researchers added an antibiotic-resistant gene to the plasmid that was inserted into the bacteria during transformation.

Transformation is the process in which bacteria absorb free DNA that is present in the environment and integrate it into their genome. This process may occur naturally or be induced in a lab setting. Antibiotic resistance genes, fluorescent proteins, and enzymes that are useful in a variety of industrial applications can be introduced into bacteria using this technique. It is also used in genetic engineering to generate transgenic organisms. The bacterial transformation process was not very efficient because only a small number of cells take up the foreign DNA.

The elimination of all non-transformed bacteria so that only transformed bacteria would grow in the LB plates is accomplished by adding an antibiotic-resistant gene to the plasmid that is inserted into the bacteria during transformation. When the bacteria are exposed to the antibiotic on the LB plate, only those that have taken up the antibiotic-resistant plasmid will survive and multiply. This technique is referred to as antibiotic selection.

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Answer: Heyaa! ~

When water vapor turns back into a liquid it's called Condensation.

Condensation Explaination: "The process of water vapor turning back into liquid water"

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- Matthew ^^

The option that isn't true of the Wada test is D. It is is used before elective surgery for the treatment of epilepsy.

It should be noted that Wada test is used to evaluate how important each side of the brain is with respect to language and memory function.

In this case, the option that isn't true of the Wada test is that is is used before elective surgery for the treatment of epilepsy.

In conclusion, the correct option is D.

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Answer:

I think

Explanation:

2 . Hypotonic state

The vessel that collects blood from smaller veins draining the myocardial capillaries and delivers it to the coronary sinus is called the cardiac veins.

The vessel that collects blood from smaller veins draining the myocardial capillaries and delivers this blood to the coronary sinus is called the cardiac veins. These cardiac veins play an essential role in collecting deoxygenated blood from the heart muscle and returning it to the coronary sinus, which then empties into the right atrium.The cardiac veins are the blood vessels that transport blood from smaller veins draining the myocardial capillaries to the coronary sinus. Deoxygenated blood is drawn from the myocardial tissue through the cardiac veins, which include the great cardiac vein, middle cardiac vein, and small cardiac vein. Eventually, these veins combine to form the coronary sinus, a bigger vein on the back of the heart. The blood is subsequently discharged from the coronary sinus into the right atrium of the heart.

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