In Natural selection, variation in a species creates many different individuals. Some individuals are suited for the environmental conditions and others are not. What happens to the ones that are not suited?

A. They continue on in the population, there are just fewer of them.
B. Their population will continue to grow because they find a way to adapt
C. The struggle to survive leads to them being killed off and their genetics leave with them. They don't live long enough to mate or have offspring.

Answer:

The description of the phrases given throughout the following description.

Explanation:

a) It is possible to have a single cure for cancer as research advances.

b) Just as an infectious disease spreads to other people, cancer cells are able to spread throughout the body. This is a crude but fair approximation of the nature of cancer.

Cancer is a kind of disease in which there is a sudden development of  malignant cells in the body. These malignant cells are able to reproduce rapidly and the reproduction of these cells would lead to the spread of the cancer.

There is the possibility of a single cure for all cases of cancer but this would depend on the furtherance of research into the etymology of the disease and its pathology.

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Answer:

A.) White dwarfs are formed from the collapse of low mass stars, less than about 10 time the mass of the Sun. ... On the other hand, neutron stars are formed in the catastrophic collapse of the core of a massive star.

B. According to the HR diagram, a star with the surface temperature of 10,000 Kelvin is a star with a B spectral type. Moreover, if the star were on the main sequence, then it would have a luminosity nearly 100 times more than that of the sun.

C. After leaving the main sequence, Vega will become a class-M red giant and shed much of its mass, finally becoming a white dwarf. At present, Vega has more than twice the mass of the Sun and its bolometric luminosity is about 40 times the Sun's.

Explanation:

Answer:

Seniors can combat health problems they may face by exercising, paying attention to weight, eating healthy foods, and doing activities they enjoy. Seniors can combat health problems they may face by avoiding the factors which contribute in that health problems. For example, chronic disease occurs when the individual consume foods with more cholesterol so for reducing the risk of this disease the person should avoid the intake of food with high cholesterol levels. If they don't avoid the intake of  such type of food, this disease may lead to death by closing the valves of the heart. They should get plenty of exercise in to fight off any illnesses because when you get older, even a cold can be harsher on the body from when you were younger. They should make sure to stay active in hobbies they enjoy. It relaxes you and makes you feel happy. Overall, they need to just make sure to watch what they eat, stay active, and still do hings they enjoy.

Answer:

Effects of Ecstasy on the nervous system:

- stimulant

- psychedelic

- neurotoxic

- abnormal neurotransmitter function  

- injured cognitive functions (e.g., sleep and pain control)

Explanation:

Ecstasy, also known as MDMA (3,4Methylenedioxymethamphetamine), is a stimulant and psychedelic drug that may exhibit neurotoxic effects. This amphetamine analog (i.e, drug based upon the amphetamine structure) has several effects on the nervous system which are caused by the increase in the activity of three major neurotransmitters: serotonin, dopamine, and norepinephrine. It has been shown that Ecstasy alters the central nervous system, producing neurotoxic effects and affecting brain functions including, among others, cognitive functioning and development, neuroendocrine release mechanisms, sleep control, pain control, etc.

The lysine amino acid will provide a positive charge to the active site. If this mutation changed all of the lysine amino acids to aspartic acid, it will produce an enzyme having a negative charge.

A mutation is any alteration in the nucleotide (DNA) sequence of the genome of an organism.

A mutation that alters the active site of an enzyme will invariably affect its catalytic activity.

A mutation that involves a change in lysine (positive) to aspartic acid (negative) will produce a protein having a net negative charge.

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Explanation:

a nonpolar fatty acids

hope this help u

A non-polar fatty acids prevent cell membrane from dissolving in water. The correct option is A.

The cell membrane, also known as the plasma membrane, is uncovered in all cells and serves to separate the cell's interior from the outside environment.

The cell membrane is made up of a semipermeable lipid bilayer. The cell membrane controls the transport of materials into and out of the cell.

These are glycerophospholipids, which are molecules made up of glycerol, a phosphate group, and two fatty acid chains. Glycerol is a three-carbon compound that serves as the membrane lipids' backbone.

As, these non-polar fatty acids are insoluble in water, so it protect the cell membrane from water. It actually prevent the cell membrane to get dissolve in the water.

Thus, the correct option is A.

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Answer:

Homocysteine

Explanation:

Answer:

Linnaeus

Explanation:

Answer:

Linneaus

Explanation:

Linnaeus is responsible for taxonomy, the most modern classification of heirarchy we use today.

Cytosine binds with guanine, therefore there will be the same percentage of guanine nucleotides as cytosine.

100-38-38 is 24% adenine and thymine

24/2=12%thymine

Turning the ankle so that the sole of the foot points laterally is called inversion.

Inversion is a movement of the foot and ankle that involves turning the sole of the foot inward towards the midline of the body. This movement is typically achieved by contracting the muscles on the medial side of the lower leg, which pull the ankle joint inward. Inversion of the ankle joint can be caused by various activities, such as walking or running on uneven surfaces, stepping off a curb or stair, or landing awkwardly after a jump.

Ankle inversion can sometimes result in an ankle sprain, which is a common injury that occurs when the ligaments that support the ankle joint are stretched or torn.

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Red and blue colored lights are most effective for plant growth.

Plant Growth is the dependent variable and light color is the independent variable. The rest are control variables.

A Control variable is the part of the experiment that we keep the same throughout all of the test subjects. An independent variable does not depend on other variables and a dependent variable does.

Allow me to explain. When we perform an experiment, many factors that can change the results, For this reason, it is common practice to keep many of them the same for all test subjects (In this case for all of the plants). This way we know that if changes are measured, they were not caused by these variables. These are what we call control variables.

An independent variable does not depend on other variables to remain the same. For example, the species of plant would be an independent variable, given that a plant cannot change its species because of other factors.

A dependent variable does change according to other variables and is often what we try to measure. For this example given, the dependent variable is how much the plant will grow with each colored light.

Knowing that plants rely on light to produce the energy needed to grow, we can hypothesize that applying different colors of light will have an effect on plant growth. To test this, we can create an experiment where we use:

As control variables.

One group of plants will have blue light, another green, and another red. We can identify the color of light as an independent variable.

Since what we seek to measure is plant growth, we identify this as our dependent variable and measure it for each plant after a set amount of time, to compare results.

With this, you can confidently identify the control, dependent, and independent variables and how to use them in your experiment.

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Answer:

Subjective observations include the way patients feel, their histories, information about any injuries, and whether they have limited range of movement.

Some synovial joints are freely movable; others are immovable. The correct option is B

The most prevalent form of joint in the body are synovial joints. A fluid-filled gap between the bones that permits motion distinguishes them. However, not every synovial joint is the same. In comparison to other synovial joints the knee joint has more limited range of motion. Examples of these joints include the shoulder and hip joints.

Synovial joints are more mobile than cartilaginous and fibrous joints. The cartilage that holds cartilaginous joints together permits some movement but not as much as a synovial joint. Ligaments hold fibrous joints together, allowing for very little movement.

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Calcium and magnesium appear to reduce or prevent preeclampsia. The answer is: e.

Preeclampsia is a condition characterized by high blood pressure and organ damage during pregnancy. Studies have shown that calcium supplementation can decrease the risk of preeclampsia in pregnant women. Calcium helps regulate blood pressure and plays a role in maintaining proper vascular function.

Magnesium has also been associated with a reduced risk of preeclampsia. It helps relax blood vessels and has a beneficial effect on blood pressure. Several studies have shown that magnesium supplementation during pregnancy can lower the risk of developing preeclampsia.

While other nutrients like fish oils, vitamin E, folic acid, and vitamins C and E may have other benefits during pregnancy, the strongest evidence supports the use of calcium and magnesium in reducing or preventing preeclampsia.

Hence, the correct option is e.

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The tuberculin skin test, also known as the Mantoux test or PPD test, is a diagnostic tool used to detect exposure to the bacterium Mycobacterium tuberculosis, which causes tuberculosis (TB).

Here are the correct statements regarding the tuberculin skin test:
1. Involves the injection of PPD intradermally: The tuberculin test involves injecting a purified protein derivative (PPD) into the skin, usually on the forearm.
2. Will be positive if a person has had previous exposure: If a person has been exposed to the bacteria in the past, their immune system may react to the injected PPD, resulting in a positive test.
3. Uses a purified protein filtrate of Mycobacterium tuberculosis: The PPD used in the test is derived from a protein filtrate of Mycobacterium tuberculosis.
4. Will be positive in active TB: If a person currently has an active TB infection, their immune system is likely to react strongly to the PPD injection, resulting in a positive test.
In summary, the tuberculin skin test is an important diagnostic tool for detecting exposure to Mycobacterium tuberculosis. By injecting PPD and observing the body's immune response, healthcare professionals can determine if a person has been previously exposed or currently has an active TB infection.

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False. The T1 vertebral body does not bind the anatomical thoracic inlet.

It is actually bounded by the first rib, the superior border of the manubrium (part of the sternum), and the medial ends of the clavicles. The thoracic inlet, also known as the superior thoracic aperture, is the upper opening of the thoracic cavity. It is a passage for various structures between the neck and the thorax. The boundaries above create a triangular-shaped inlet through which important structures pass, including the trachea, esophagus, major blood vessels, and nerves.

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Answer:

Flood Erosion and Deposition: As flood waters rise, the slope of the stream as it flows to its base level (e.g., the ocean or a lake) increases. Also, as stream depth increases, the hydraulic radius increases thereby making the stream more free flowing. Both of these factors lead to an increase in stream velocity.

Explanation:

Flood erosion and deposition, as flood waters rise, the stream's slope rises as it descends to its base level, which may be an ocean or a lake.

Additionally, when stream depth rises, the hydraulic radius rises as well, increasing the stream's ability to flow freely, these two elements cause the stream velocity to rise.

The volume of water flowing into a stream channel from the watershed directly affects the stream's flow. The weather has an impact on it; it rises during downpours and falls during dry spells.

The force of gravity, which pushes water downhill, is what gives moving river water its energy. A river will flow more quickly and with greater energy at a higher slope.

Therefore, flood erosion and deposition factors will increase the rate of a stream’s flow.

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Answer:

If all of the ice on Antarctica, Greenland, and in mountain glaciers around the globe melted, sea level would increase by approximately 70 meters. (230 feet). The water would engulf all coastal towns. And the land size would be considerably reduced.

Staphylococcus aureus was identified as an unknown by performing various laboratory tests. This process is called bacterial identification.

There are numerous methods for bacterial identification, but all of them aim to distinguish between different species of bacteria. These methods may be based on phenotypic, genotypic, or proteomic characteristics. In the case of Staphylococcus aureus, the tests were focused on its phenotypic characteristics.

Phenotypic characterization includes the use of microscopy, culture characteristics, and biochemical tests to identify the bacterial species. Gram staining is the first step in identifying an unknown bacterial species, which is used to categorize bacteria into Gram-positive or Gram-negative. Staphylococcus aureus is Gram-positive cocci that appear in clusters. It is differentiated from other cocci by performing additional biochemical tests such as catalase, coagulase, mannitol fermentation, and DNA se tests.

Catalase test is done to differentiate between staphylococci and streptococci, which are both Gram-positive cocci but have different catalase activity.

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If the elevations of points X and Z are provided, we can subtract the two values to find the difference in elevation and then compare it to the options given to determine the closest one.

To determine the closest option to the difference in elevation between Susan's location (point X) and her campsite (point Z), we need to compare the given values.

Let's assume Susan's campsite (point Z) is at an elevation of Z meters, and her current location (point X) is at an elevation of X meters. The difference in elevation between the two points is given by |X - Z| (taking the absolute value to consider only the magnitude of the difference).

Now, let's compare the options given:

A. 280 m

B. 320 m

C. 2180 m

D. 2220 m

To determine the closest option, we need to find the value that is closest to the calculated difference |X - Z|.

Since the elevations of points X and Z are not provided, we cannot determine the exact difference or which option is closest to it. Without knowing the specific elevations, we cannot make a definitive choice among the given options.

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The species most likely to produce a glycocalyx is b.) E. coli growing on a hip implant.

The glycocalyx is a layer of extracellular polysaccharides that can form on the surface of certain bacteria. It can act as a protective barrier and help the bacteria attach to surfaces, such as medical devices like a hip implant.

E. coli is known to produce a glycocalyx, and it is more likely to do so when growing on a surface like a hip implant, where it can form a biofilm and protect itself from the host's immune system.

The other species listed (S. epi, S. aureus, and Salmonella) can also produce a glycocalyx, but they are less likely to do so under the conditions described.

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Trees that grow in a forest tend to grow very tall, with few branches. The same species of tree grown in an open area tends to grow shorter and wider, with many branches. The stimulus responsible for these different growth patterns is the amount of —

\( \mathfrak{WatanabeHaruto}\)

Isoflurane is a medication that rapidly diffuses in the arterial circulatory system and penetrates the blood-brain barrier, causing amnesia, skeletal muscle relaxation, and hypnosis.

The vascular system, often known as the circulatory system, consists of the vessels that transport blood and lymph throughout the body. The arteries and veins transport blood throughout the body, supplying oxygen and nutrients to tissues and removing waste.

The vascular system is organized into four sections: arterial, capillary, venous, and lymphatic. There are three types of arteries: elastic (conducting) arteries, muscular (distributing) arteries, and arterioles. Venules and veins are the names given to venous vessels.

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Isoflurane is a drug that quickly permeates the blood-brain barrier, induces skeletal muscle relaxation, and induces hypnosis in addition to amnesia.

The vessels that move blood and lymph across the body are collectively referred to as the vascular system, or circulatory system. Blood is carried by the arteries and veins as they move oxygen- and nutrient-rich blood throughout the body and remove waste.

The artery, capillary, venous, and lymphatic systems are divided into these four categories. Arterioles, elastic (conducting) arteries, muscular (distributing) arteries, and capillaries are the three different types of arteries. The terms for venous vessels are veins and venules.

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Answer:

The correct option is d

Explanation:

Plasma membrane (or cell membrane) is a semipermeable or selectively permeable barrier that regulates what goes in and out of the cell by keeping toxic substances out of the cell while allowing nutrients, ions and some metabolic products inside the cell.

This membrane surrounds all the content/organelle inside (cytoplasm and nucleoplasm) of the cell.

Explanation:

viruses may contain very small cells viruses can produce them quickly when they get a mode of transmission viruses have hyphae BUT viruses never eat any food so second statement is true....

Answer:

Explanation:

Tactic movement;

Movement is directly towards/away from stimulus

Stimuli consist of light/heat/chemical

Nastic movement;

non-directional movement

stimulus is touch/tugor pressure.

Explanation:

1.Movement is directly towards/away from stimulus

2.Stimuli consist of light/heat/chemical

for tastic movement

Answer:

B. Constants

Explanation:

Constants are the factors that stay the same throughout the entire experiment no matter which group. The definition of a constant is "a situation or state of affairs that does not change." this furthers the point that constant is the correct answer because they don't change in the experiment.

B) I believe? Normally I'd say controlled variable

Answer:

Animal cells and fungal cells do not have chloroplasts and, therefore, cannot photosynthesize. That is why these organisms, as well as the non-photosynthetic protists, rely on other organisms to obtain their energy. These organisms are heterotrophs.

Explanation:

Mark me as brainliest

Answer:

\(\boxed {\tt Golgi \ apparatus}\)

Explanation:

After a protein is produced on a ribosome it is sent to the endoplasmic reticulum. Here, proteins fold and then are sent to the golgi apparatus.

In this organelle, proteins are modified and labeled. Sugar groups (modifications ) and tags/signals (labels) can be added. From the golgi apparatus they are sent to different destinations or secreted.

So, the correct answer is Golgi apparatus.

Golgi apparatus

The Golgi apparatus, which is usually situated near the nucleus, receives proteins and lipids from the ER, modifies them, and then dispatches them to other destinations in the cell. Transport from the ER to the Golgi apparatus—and the Golgi can either move onward through the Golgi stack or, if they contain an ER retention signal, be returned to the ER; proteins exiting from the Golgi are sorted according to whether they are destined for lysosomes (via endosomes) or for the cell surface.