cancers cells with accumulation of other associated cells including tumor associated fibroblast, immune suppressive and immune modulatory, cell make a mass of cell environment called tumor microenvironment (tme).

Answer:

Cell membrane

Explanation:

Cell membrane is the cellular structure in an animal cell helps maintain homeostasis by controlling the transportation of substances into and out of the cell

Homeostasis is a self regulating process that maintain a stability of internal body with respect to the changing external environment which ultimately maintain a steady state of the living system.

It maintain body homeostasis by regulating body temperature, blood pH, blood glucose level,  sodium, potassium and calcium ion concentrations.

Three mechanisms are involved in homeostasis such as Effector, Receptor, Control Center.

The  homeostasis  can be failed due to two factors such as due to an internal environment or other factors like Genetics, Physical condition, diet, nutrition, toxins, Psychological health etc.

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Answer:

The answer is b

Explanation:

the molecule present in all living things

Answer:

the answer is true.

Answer:

In lactic acid fermentation, pyruvate is reduced to lactic acid. ... In alcoholic fermentation, pyruvate is reduced to alcohol and releases carbon dioxide. This type of fermentation is commonly used with yeast to make alcoholic beverages and cause bread to rise

Explanation:

At 12 hours, there are 120 strands of bacteria present.

The population of bacteria can be modeled using the equation P(t) = \(15(2)^(t/4)\), where P(t) represents the number of strands of bacteria at time t in hours.

To find the number of strands of bacteria at 12 hours, we substitute t = 12 into the equation:

P(12) = \(15(2)^(12/4)\)

P(12) = \(15(2)^3\)

P(12) = 15(8)

P(12) = 120

Therefore, at 12 hours, there are 120 strands of bacteria present.

It's important to note that the given population model assumes exponential growth, where the number of strands doubles every 4 hours. Starting with an initial population of 15 strands, the exponent in the equation (t/4) represents the number of doubling periods that have occurred. Each doubling period corresponds to 4 hours of time.

In this case, at 12 hours, three doubling periods have occurred (12/4 = 3). Starting with the initial 15 strands, each doubling period doubles the population, resulting in a final count of 15 * \(2^3\) = 120 strands of bacteria at 12 hours.

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Answer:

on the moon

Explanation:

because the moon is the biggest

Answer:

metabolic activity

Explanation:

\(EUKARYOTIC:\) Cells with a nucleus

\(PROKARYOTIC:\) Cells without a nucleus

\(EUKARYOTIC:\) Cells with lysosomes and peroxisomes

\(PROKARYOTIC:\) Cells without lysosomes and peroxisomes

\(EUKARYOTIC:\) Cells with the endoplasmic reticulum

\(PROKARYOTIC:\) Cells without the endoplasmic reticulum

Hope this helps! :)

Answer:

Prokaryotes : -

Eukaryotes : -

Answer: It is a process by which greenhouse gases allow the sun’s light to penetrate the atmosphere but stop the heat from escaping.

Explanation:

Greenhouse effect is the natural heating of the Earth's surface due to the fact that the sunligth waves may penetrate the atmosphere and reach the solid surface, but when the sunlight waves return after reaching the solid surface, process that changes the wavelength of the sunlight, they cannot penetrate the greenhouse gases and so the heat is kept inside the atmosphere with the consequent increase of temperature.

The nervous  and  endocrine systems are closely related and both are closely involved  in conditions of homeostasis. Endocrine dysfunction can lead to a variety of neurological symptoms such as  acute encephalopathy including headache, myopathy and coma.

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Answer:Images 1 and 4: atoms

Image 2 : compounds.

Image 3 (yellow doublets): molecules that are not compounds.

Explanation:

Answer:

The answer is

Explanation:

Drag each label to the correct location on the models. Each label can be used more than once.

Label each image as containing atoms only, molecules that are not compounds, or compounds.Drag each label to the correct location on the models. Each label can be used more than once.

Label each image as containing atoms only, molecules that are not compounds, or compounds.Drag each label to the correct location on the models. Each label can be used more than once.

Label each image as containing atoms only, molecules that are not compounds, or compounds.Drag each label to the correct location on the models. Each label can be used more than once.

Label each image as containing atoms only, molecules that are not compounds, or compounds.Drag each label to the correct location on the models. Each label can be used more than once.

Label each image as containing atoms only, molecules that are not compounds, or compounds.Drag each label to the correct location on the models. Each label can be used more than once.

Label each image as containing atoms only, molecules that are not compounds, or compounds.Drag each label to the correct location on the models. Each label can be used more than once.

Label each image as containing atoms only, molecules that are not compounds, or compounds.Drag each label to the correct location on the models. Each label can be used more than once.

Label each image as containing atoms only, molecules that are not compounds, or compounds.Drag each label to the correct location on the models. Each label can be used more than once.

Label each image as containing atoms only, molecules that are not compounds, or compounds.

Answer:

Carbon dioxide

Explanation:

When the plant makes the glucose molecule, it gets the carbon and oxygen atoms it needs from carbon dioxide, which it takes from the air. Carbon dioxide doesn't have any hydrogen in it, though, so the plant must use another source for hydrogen. The source that it uses is water

Based on the DNA sequence, the species that is most closely related to the unknown species is species 1, as it has more homologies than species 2. A bigger distance can be traduced in a higher number of mutations or modifications in the DNA sequence.

The correct answer is: Species 1.

Explanation:

The mechanical advantage of a machine is the ratio of the load (the resistance overcome by a machine) to the effort (the force applied). There is no unit for mechanical advantages since the unit for both input and output forces cancel out.

Velocity ratio of simple machine is the ratio of distance travelled by the effort to the distance travelled by theload in the machine. As velocity ratio or ideal mechanical advantage is a simple ratio of two distances, it also does not have the unit. The friction is not involved in it.

The skin and its derivatives form the integumentary system.

The integumentary system is made up of the skin and its byproducts, including the hair, glands, and nails. The integumentary system is an organ system that guards the body against several types of harm, such as water loss or external abrasion. Additionally, it aids in maintaining body temperature regulation and has sensory receptors that enable us to perceive touch, pressure, pain, and temperature.
The skin and its derivatives (nails, glands, and hair) form the integumentary system.

The integumentary system serves a number of crucial purposes. These consist of:

Protection: The skin serves as a barrier to ward off biological, chemical, and physical harm to the body. Additionally, it aids in preventing the body's loss of water and other vital components.

Sensation: Our ability to perceive touch, pressure, pain, and temperature is made possible through sensory receptors found in the skin.

Through functions including sweating and blood vessel dilation or constriction, the skin aids in controlling body temperature.

Vitamin D synthesis: When exposed to sunshine, the skin's cells can create vitamin D.

Sweating glands in the skin can aid in the body's excretion of waste materials.

Skin cells that function as immune system components are present, aiding the body's defences against

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Antagonistic pleiotropy is a genetic phenomenon where a single gene affects multiple traits, with positive effects on some traits and negative effects on others. In the case of aging, it is possible that the set of genes responsible for causing aging in humans also have positive effects on other aspects of health and fitness, such as reproductive success and immunity.

If we were to alter these genes in some way to extend lifespan, it is possible that we would inadvertently disrupt the positive effects of these genes on other traits. For example, if a gene that promotes cellular repair also increases the risk of cancer, altering it to extend lifespan could also increase the risk of cancer. Similarly, if a gene that enhances immunity also increases inflammation and tissue damage, altering it to extend lifespan could also compromise the immune system and increase susceptibility to infections.

Thus, the concern with altering the set of genes responsible for causing aging is that we may be trading off lifespan for other aspects of health and fitness. This is not to say that we should not pursue research on extending lifespan, but rather that we should be mindful of the potential trade-offs and strive to understand the full scope of the genetic and physiological mechanisms involved in aging before attempting to manipulate them.

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The process is known as transgenics.

By artificially introducing one or more foreign DNA sequences from another species, an organism or cell is said to be transgenic if its genome has been transformed. For scientific investigation, transgenic organisms are produced in the lab.

For a very long period, transgenic has been applied to genetic research. They were employed to show that oncogenes are cancer-causing agents and that DNA is the molecule that houses the genetic code. Transgenic animals have been developed to better understand physiological systems including metabolism and blood cell formation. The development of novel medicines has used transgenic animals as models for human diseases. Virus-resistant and faster-growing transgenic crops have been developed.

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Answer:co-dominance

Explanation:

neither trait is stronger so the foal displays both colors

The independent variable in the experiment is the time that have been taken.

The independent variable is the variable that is being manipulated or changed in an experiment or study. It is considered the "cause" in the relationship being investigated and its effects are measured through the dependent variable.

We can see that as the time is changing so the number of the bacteria is changing the fore this is the independent variable in the experiment that is taking place here.

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Given:

The percentage of C-14 in the sample was 73% found in living beings.

Half-life of C-14, t1/2 = 5730yrs = 1.81 * 10¹¹s

Decay constant of the C - 14 isotope

λ = ln(2) / t1/2

λ = In(2) / 1.81 * 10¹¹

λ = 3.83 * 10⁻¹²/s

Let the N₀ be the number of C- 14 in a living sample. Then the number of C-14 in the given sample will be,

N = 0.73 * N₀

Let t be the age of the fossil.

then the given number of leftover atoms of carbon isotope can be expressed in the form of

N = N₀e⁻λt

−λt = In(0.73)

So the age of the fossil,

t = In(0.73)/ −λ

t = In(0.73)/ -3.38 * 10⁻¹²

t = 8.22 * 10¹⁰ s

t = 2605.59 yrs

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Answer:

Photosynthesis is the process by which plants make their own food in the presence of sunlight by utilizing carbon-dioxide and water and produces oxygen and energy.

The process of photosynthesis has two types of reactions: light-dependent reactions and light-independent reactions.

The light-dependent reactions occur in the thylakoid membranes of chloroplasts in which plants use light energy to form ATP and the reduced electron carrier NADPH.

In this reaction, photosystem II (P700) absorbs lights energy and passed it to reaction center. this energy is then is transferred to photosystem I (P680), that pump an electron to a high energy level. The high-energy electron then travel to an electron transport chain and releases energy. this released energy pump H+  ions into the thylakoid interior from the stroma and build a gradient  H+ ions move through gradient and they pass through ATP synthase resulting in the formation of ATP.

The higher energy electron as moves into an electron transport chain, the electron is passed to NADP+ to form NADPH.

Answer:

In the light-dependent reactions of photosynthesis, electrons become excited after photons strike the light-absorbing pigment chlorophyll. These excited electrons are then transferred from the chlorophyll to the electron transport chain. To replace the loss of electrons from the chlorophyll, water molecules present in chloroplasts are split in a process called photolysis. The separate components of water get recycled and used. The freed electrons replace those that supported the electron transport chain. The released hydrogen helps to develop a proton gradient in the thylakoid membranes. This gradient helps to fuel the production of ATP.

Explanation:

Answer:

The warm temperature caused moisture to evaporate from the leaves

Explanation:

The large stained-pink circle in the middle of each cell is most likely the cell nucleus.

Eukaryotic cells, which have a distinct nucleus and other membrane-bound organelles, have the cell nucleus, a membrane-bound organelle. DNA, which contains instructions for the development and function of a cell, is one of the genetic material found in the nucleus of a cell.

In microscopic pictures or stained cell samples the nucleus often appears as a distinct, round or oval structure with a darker stain than the surrounding cytoplasm. The staining clarifies the presence of DNA and shows where the nucleus is located within the cell.

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I agree with Student 5 that high levels of ATP and NADH inhibit citric acid cycle enzymes.

High levels of ATP and NADH can inhibit the enzymes of the citric acid cycle.

The citric acid cycle, also known as the Krebs cycle, is a series of enzymatic reactions that occur in the mitochondria of cells and are responsible for generating energy in the form of ATP. During the cycle, energy is produced by the oxidation of acetyl-CoA, which enters the cycle and is eventually converted into CO2.

ATP and NADH are important energy molecules that are generated during the citric acid cycle. However, high levels of ATP and NADH can signal to the enzymes of the citric acid cycle that energy production is sufficient and that more energy does not need to be generated at the moment. This signal can cause feedback inhibition, which means that the enzymes are inhibited by the product of the reaction they catalyze.

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Missing parts;

Five students made the claims below about the regulation of carbohydrate metabolism. Which student do you agree with?

Student 4 claims that large concentrations of reduced coenzyme NADH activate citrate synthase.

Student 2 claims that buildup of ADP and AMP inhibits glycolytic and citric acid cycle enzymes.

Student 5 claims that high levels of ATP and NADH inhibit citric acid cycle enzymes.

Student 3 claims that overproduction of citrate activates glycolytic enzymes.

Student 1 claims that large concentrations of oxidized coenzymes such as NAD+ and FAD inhibit citric acid cycle enzymes.

Answer:

D. They would compete with native snake species for resources, causing a decline in native snake populations and possibly extinction.

Explanation:

Just took the test! :D

They would compete with native snake species for resources, causing a decline in native snake populations and possibly extinction. Hence option D is correct.

Predators are living things that go after and kill prey. Both carnivores and omnivores can be predators. Predation can be classified into four categories: carnivory, herbivory, parasitism, and mutualism. Depending on whether or not the victim dies, each sort of predation can be classified.

Predators include weasels, hawks, wolves, mountain lions, and grizzly bears. Because they are carnivores, predators only eat meat.

If a snake species were introduced to an ecosystem where it had no natural predators, it would compete with native snakes. Hence, option D is correct.

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