How does matter change during a chemical reaction?

Answer:

L = 17 m, W = 12 m

Explanation:

W = (L - 5) m

P = 2(L + W) = 58 m

Substitute W = L - 5 from the first equation into the second equation and get L:

2[L + (L - 5)] = 58

2(2L - 5) = 58

2L - 5 = 58/2 = 29

L = (29 + 5)/2 = 17

Then W = L - 5 = 17 - 5 = 12

Answer:

HIV

Explanation:

communicable means able to be transfer from one person to another contagious or infectious

Answer:

D. Traits for smaller animals with short horns will be selected.

Explanation:

The process of natural selection will favour those individuals that possess the combination of characteristics that are most likely to survive and reproduce. As the hunters tend to target the larger animals with big horn, smaller animals with short horns will have better chances of survival so the traits for short animals with short horns will be selected.

The adrenal gland plays a role in maintaining circadian rhythm by producing the hormone cortisol. The circadian rhythm is a biological process that regulates the sleep-wake cycle, body temperature, and other physiological functions over a 24-hour period.

The adrenal gland produces several hormones, including cortisol, which is a steroid hormone that helps regulate metabolism, immune function, and stress response. the adrenal gland plays a role in maintaining circadian rhythm by producing cortisol, which helps regulate the timing of various physiological processes, including the sleep-wake cycle and body temperature. Cortisol levels naturally fluctuate throughout the day, with the highest levels occurring in the morning and the lowest levels occurring at night.

The adrenal cortex secretes cortisol, a hormone that helps regulate the body's response to stress and maintain circadian rhythm. Cortisol levels follow a daily pattern, typically peaking in the early morning and decreasing throughout the day. This pattern is influenced by the body's internal clock, or circadian rhythm, which is responsible for regulating various physiological processes, such as sleep, metabolism, and immune function. By secreting cortisol, the adrenal gland plays a critical role in maintaining the body's circadian rhythm, ensuring that these processes function smoothly throughout the day.

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Answer:

Your answer would be Horse chestnut

Answer:

hello how are you

Explanation:

I'm fine

Answer:

Explanation:

How do cells affect organisms in mass?

im sorry im really late to this!

A testable question related to the topic of cells in organisms: "How does the presence of a cell's nucleus impact the rate of protein synthesis in eukaryotic cells compared to prokaryotic cells?"

This question could be explored through experiments that compare the protein synthesis rates between eukaryotic cells (which have a nucleus) and prokaryotic cells (which lack a nucleus). By measuring the rates of protein synthesis in both types of cells under various conditions, researchers could gather data to determine if the presence of a nucleus has an effect on the cellular process of protein synthesis.

Cell biology has also contributed to medical advances, such as understanding the basis of diseases like cancer and developing therapies. The development of microscopy techniques and molecular tools has allowed scientists to delve deeper into the molecular and cellular mechanisms underlying various biological processes.

In summary, cells are the fundamental units of life, and their study is crucial to understanding how organisms function, develop, and interact with their environment. The differences between prokaryotic and eukaryotic cells contribute to the diversity and complexity of life on Earth.

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Answer:

B. Voltage is when current flows from higher to lower potential energy.

Explanation:

Voltage refers to the difference in electric potential between two points. Current in the wire always flow from higher potential to lower potential due to voltage. At the electric source, voltage of current is high but when it moves through wire, the amount of current decreases when it reaches to the other end of the circuit. This is because of the resistance present inside the wire which causes heat energy and some of the current is lost.

The correct answer is option B. Voltage is when current flows from higher to lower potential energy.

Voltage is the difference in charge, in this case, made by the electrons, that results in electrons flowing from a place of high concentration to one of low concentration. We call the flow of electrons current, and we measure voltage in Volts (V).

It is a unit that we use to measure the intensity of the current.

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Answer:

the smaller population would grow

Explanation:

The population of deer in the wildlife sanctuary can be estimated using the formula:

P(t) = P(0) * (1 + r)^t

where P(t) is the population after t years, P(0) is the initial population, r is the growth rate per year, and t is the number of years.

In this case, the initial population (P(0)) is 40 deer, the growth rate (r) is 60% per year (0.60), and we need to estimate the population after one year (P1) and two years (P2).

To calculate P1:
P(1) = 40 * (1 + 0.60)^1
P(1) = 40 * (1 + 0.60)
P(1) = 40 * 1.60
P(1) = 64

Therefore, the estimated population after one year is 64 deer.

To calculate P2:
P(2) = 40 * (1 + 0.60)^2
P(2) = 40 * (1 + 0.60)^2
P(2) = 40 * 1.60^2
P(2) = 40 * 2.56
P(2) = 102.4

Therefore, the estimated population after two years is 102.4 deer.

It's important to note that these are estimates and assume that there are no constraints on the population growth. In reality, factors like limited resources, predation, and disease can affect the growth rate and population size.

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Answer:

The 3 limiting factors that might drive competition within a single species is the food, availability of mates, disease, and shelter (biotic factors) and temperature, climate, sunlight, rainfall, natural disasters, and pollution (abiotic factors).

Explanation:

These factors limit the size of populations. As a population grows, there is more and more competition for the limited resources that Earth provides.

Biotic factors are living things that affect the ecosystem (like when we manually burn/chop down trees and destroy habitats of animals who used to live there).

Abiotic factors are non-living things (natural causes) that affect the ecosystem (like climate change causing the melting of glaciers and mass burning of trees (aka forest fire))

I hope I got it right!! :D

Also if this was for your homework or something, i hope this helps you! :D

The main benefit that these organelles gain by having folded or protruding membrane structures is an increased surface area. This increased surface area allows for more efficient functioning of the organelle by providing more space for important cellular processes to occur.

For example:
1. In the mitochondria, the inner membrane has folds called cristae, which increase the surface area for the electron transport chain and ATP production to take place more efficiently.
2. In chloroplasts, the thylakoid membranes contain the photosynthetic pigments and electron transport chain components necessary for photosynthesis. The increased surface area provided by the thylakoids allows for more efficient light absorption and energy conversion.
3. The endoplasmic reticulum (ER) has a network of membrane folds that provide more surface area for protein synthesis (in the rough ER) and lipid synthesis (in the smooth ER).

In summary, the folded or protruding structures in these organelles allow for increased surface area, which in turn enables more efficient cellular processes and better overall functioning of the organelle.

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Answer:

Explanation:

the carbon dioxide molecule encounters the structures in the following order: 5) capillaries near muscle cells, 2) systemic vein, 1) heart, 4) pulmonary artery, and 3) alveolar capillaries.

Photosynthesis is the process by which plants trap light energy through their pigments and together with carbon dioxide and water generate a carbohydrate (chemical energy).

That is, photosynthesis is the process in which light energy is converted into chemical energy in the form of sugars.

we can conclude that the correct answer is:

B. photosynthesis.

The BEST statement describing the difference between ringworm and other zoonotic diseases such as plague or SARS is:

Ringworm is not life-threatening, whereas most others are.

Ringworm is a fungal infection of the skin, hair, or nails that can be transmitted from animals to humans. While it can be uncomfortable and unsightly, it is not generally a serious or life-threatening condition. On the other hand, diseases like plague and SARS are highly contagious and can be deadly if left untreated.

Plague is caused by a bacterium that is typically spread by fleas from infected rodents, while SARS is caused by a virus that can be transmitted from animals to humans, with bats and civet cats being the suspected reservoirs. Both diseases can cause severe respiratory symptoms and can be fatal in some cases.

The correct sequence of renal tubule segments through which filtrate would flow is B. proximal tubule, descending limb of nephron loop, ascending limb of nephron loop, distal tubule.

The kidney consists of three primary sections: renal cortex, renal medulla, and renal pelvis, the renal tubule is a portion of the nephron that carries a filtrate away from the glomerulus. Each nephron in the kidney has a renal tubule, which is divided into four different regions. The four regions are the proximal convoluted tubule, the loop of Henle, the distal convoluted tubule, and the collecting duct. The proximal tubule is the segment of the renal tubule that immediately follows Bowman’s capsule and is responsible for most of the reabsorption of nutrients and ions from the glomerular filtrate.

The descending limb of the loop of Henle is the second segment of the renal tubule, which is responsible for reabsorbing water. The third segment of the renal tubule is the ascending limb of the loop of Henle, which is responsible for reabsorbing ions, particularly Na⁺ and Cl⁻. The final segment of the renal tubule is the distal tubule, which is responsible for reabsorbing additional ions and regulating the pH of the urine. So therefore the correct answer is B. proximal tubule, descending limb of nephron loop, ascending limb of nephron loop, distal tubule.

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The filtrate in the renal tubule flows in the sequence: Proximal tubule, descending limb of nephron loop, ascending limb of nephron loop, and distal tubule, finally reaching the collecting duct where it gets converted into urine. These segments allow the reabsorption of water and useful substances, along with the expulsion of waste substances.

The correct sequence of renal tubule segments in which filtrate would flow in the human body is: Proximal tubule, descending limb of nephron loop, ascending limb of nephron loop, distal tubule, and then the collecting duct. Kidney filtration starts at the Bowman's capsule which then passes it to the proximal tubule, the descending and ascending limbs of the nephron loop (Loop of Henle), followed by the distal tubule, and finally the collecting duct where it is converted into urine. The filtrate moves through these consecutive segments in order, a process which allows the body to reabsorb water and various useful substances while expelling waste substances as urine.

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Place the dried apricots and raisins in clean water and let them soak for a while. After that, add them to a salt- or sugar-concentrated solution. When submerged in pure water, endosmosis causes each of them to absorb water and enlarge.

Osmosis is the process by which solvent molecules move from a region of higher concentration to an area of lower concentration across a semi-permeable membrane.

Osmosis, on the other hand, simply moves water molecules, whereas diffusion moves both particles and substances. The purpose of this experiment is to examine how the potato cells respond to various sugar concentrations via the osmosis mechanism.

Osmosis is the process by which water molecules pass across a cell's partly permeable membrane from a solution with a high concentration of water molecules to one with a lower concentration.

Particles migrate from a region of higher concentration to one of lower concentration in both diffusion and osmosis.

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Answer: You have to perform cellular respiration.

Explanation: Every living cell or organism has to turn fuel into energy through the form of cellular respiration where you take sugar, turn it into energy, and use it.

Answer:

rock that forms when melted rock (magma, lava) cools and hardens

Explanation:

Igneous rock, or magmatic rock, is one of the three main rock types, the others being sedimentary and metamorphic. Igneous rock is formed through the cooling and solidification of magma or lava. The magma can be derived from partial melts of existing rocks in either a planet's mantle or crust.

Brainliest plz

Answer:

Interactions among R groups results in hydrophobic interactions, hydrogen bonds, salt bridges, and sulfur-sulfur covalent bonds.

Explanation:

The above listed interactions help stabilize the protien organization (R group is the main player)

Answer:

D) Both

Explanation:

If the liquid cannot pass through the present phospholipid bilayer it must travel elsewhere left or right.

The part of the endocrine system which affects her body's ability to produce insulin is referred to as the pancreas.

This is defined as substance which is secreted into the bloodstream by the organ known as the pancreas and is leaf shaped. Its mode of action is to allow glucose to enter the body's cells to provide energy.

Insulin helps to regulate the blood sugar or glucose level in the body and  a deficiency will lead to diabetes which comes with a lot of complications and risks.

This is therefore why pancreas was chosen as the most appropriate choice.

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Needs identification is one of the most important aspects of fleet management as it allows an organization to identify its needs, requirements, and limitations with regards to the fleet. VW is taking a stance to reduce its carbon emissions, and the organization is selective with the transportation modes used that can utilize Biofuels.

The first application point is that needs identification is critical to ensure that the transportation modes used are environmentally friendly. This is because identifying the need to reduce carbon emissions in the case study has led VW to switch to biofuels, which have a significantly lower carbon footprint than traditional fuels.

The second application point is that needs identification is essential to minimize the total cost of ownership of a fleet. Identifying the need for environmentally friendly transportation modes allows the company to save money on fuel costs, maintenance, and replacement of vehicles in the long run, ultimately increasing profitability. The move by VW to use biofuels is definitely a step in the right direction of reducing carbon emissions.

Biofuels produce fewer emissions than fossil fuels, and they are also renewable. They are therefore more sustainable and better for the environment in the long run. Additionally, the use of biofuels could also lead to VW getting more customers as people have become increasingly environmentally conscious and are likely to be drawn towards companies that prioritize environmental sustainability.

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Scanning electron microscope (SEM) can be used to study the details of protein molecules present on the surface of a cell. These give a three-dimensional structure of the molecules. Thus, the correct option is A.

Scanning electron microscope (SEM) is a type of electron microscope, designed to directly study the surfaces of solid objects, that utilizes a beam of focused electrons of relatively low energy is scanned in a regular manner over the specimen to be observed.

Scanning electron microscopes use an electron beam to study samples with a resolution. The electrons are emitted from a filament and collect into a beam in the electron source. The beam is focused on the sample by a set of lenses in the column.

Therefore, the correct option is A.

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Your question is incomplete, most probably the complete question will be:

To study the details of protein molecules on the surface of a cell a biologist would most likely use a:

a. scanning electron microscope

b. transmission electron microscope

c. compound light microscope

d. dissecting microscope

The technique that distinguishes based on size and not charge, with direct staining to visualize, is called "size-exclusion chromatography" (SEC). This method separates molecules in a mixture based on their size, allowing for easy visualization and analysis.

Size-exclusion chromatography (SEC), also known as gel filtration chromatography or gel permeation chromatography, is a chromatographic technique used to separate and analyze molecules based on their size or molecular weight. It is commonly used in biochemistry, molecular biology, and pharmaceutical sciences to characterize biomolecules such as proteins, nucleic acids, carbohydrates, and polymers.

SEC operates on the principle of porous gel beads packed in a column. These gel beads have a range of pore sizes, forming a porous network through which molecules can pass. The larger molecules cannot enter the smaller pores and, therefore, elute out of the column faster, while smaller molecules can enter the pores and take longer to elute.

Sample Preparation: The sample to be analyzed is prepared in a suitable buffer or solvent. The sample may contain a mixture of molecules with different sizes.

Column Preparation: The SEC column is prepared by packing the gel beads into a column. The gel beads are chosen based on the desired separation range and compatibility with the sample and solvent.

Sample Injection: The prepared sample is injected onto the SEC column. As the sample passes through the column, molecules interact with the gel beads based on their size.

Elution: The mobile phase (buffer or solvent) is continuously passed through the column, carrying the sample components. Larger molecules that cannot enter the pores of the gel beads move through the column quickly and are the first to elute. Smaller molecules, which can enter the pores and interact more with the gel, take longer to elute.

Detection and Analysis: The eluted components are detected and quantified using various detectors such as UV-Vis spectrophotometers, refractive index detectors, or fluorescence detectors. The data obtained can be used to determine the molecular weight distribution or estimate the size of the sample components.

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In a biofloc technology system and a stagnant-renewal culture system, the effects of dietary Lactobacillus plantarum (KC426951) on the growth and innate responses of Nile tilapia Oreochromis niloticus were assessed (SRCS).

What are the four treatments?

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The coffee cup calorimeter is considered an isolated system. In terms of energy transfer, this means that there is no heat exchange between the system and its surroundings.

The heat capacity of a calorimeter is the amount of heat energy required to raise its temperature by 1°C. It is important to determine the heat capacity of the calorimeter because it allows the accurate measurement of heat transfer in chemical reactions.

By measuring the heat capacity of the calorimeter, one can account for the heat absorbed by the calorimeter itself during the reaction and obtain the correct enthalpy change

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Answer:

Transpiration is a type of evaporation. This type of evaporation only happens with plants. The water leaving the plant is excess water that the plant doesn't need.

Explanation:

Answer: A

Explanation: hope this is helpful :)

Answer:

heyyyyyy

Explanation:

nfxhuyhffgggvvuhgggg

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