Which property of a substance can be determined using a pH indicator? A acidity B. boiling point. C density D. electrical conductivity. E. thermal conductivity​

hypothesis- testable guess that can be expressed as an "if-then" statement     theory - a scientific explanation that has been repeatedly confirmed matter-takes up space and has mass energy-the capacity or ability to do work    

kilogram-the standard units in scientific and technical pursuits SI system -the base unit for mass in the SI system. universal law-a principle that is in effect always and everywhere.

physical science-the branch of study that includes physics and chemistry    model-an artificial representation of a real system or process

A principle formed to explain things, certain phenomena, or fact which was validated previously known as Theory.

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I think the correct option is C.

Answer:

Answer:

→ Cell signaling

Explanation:

Cellular differentiation is often controlled by cell signaling.

Cells and tissues can vary in competence, their ability to respond to external signals.

According to the information, we can infer that the Independent variable: Temperature (specifically, the range of temperature). On the other hand, Dependent variable: Distribution of pikas. Additionally, Control: Pikas within their tolerance range of temperature and Constants: Other environmental factors, habitat conditions, and population of pikas.

In this experiment, the independent variable is the temperature, specifically the range of temperature. The researcher will manipulate and observe how different temperature ranges affect the distribution of pikas.

The dependent variable is the distribution of pikas. It refers to the geographical or spatial range in which pikas are found. The researcher will measure and analyze how the distribution of pikas changes in response to different temperature ranges.

To ensure test validity, a control group of pikas within their tolerance range of temperature needs to be included. This group will experience temperatures within the range they can tolerate, providing a baseline for comparison. By comparing the distribution of pikas in different temperature ranges to the control group, the researcher can determine the impact of temperature on their distribution.

To maintain validity, other environmental factors such as altitude, precipitation, vegetation, and habitat conditions should be kept constant across the experimental groups. Additionally, the population of pikas being studied should be consistent, without any significant changes in population size or genetic composition throughout the experiment. These constants help isolate the effect of temperature on pika distribution and minimize confounding variables.

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The correct answer is A) the cristae of a mitochondrion. The cristae are folded inner membranes of the mitochondria that increase the surface area available for cellular respiration.

What is cellular respiration?

Cells generate ATP through a process called cellular respiration, which takes place in the mitochondria. The cristae's larger surface area makes it possible for additional electron transport chains and respiratory enzymes to be present, improving the efficiency of cellular respiration. This is significant because ATP is necessary for a variety of biological functions, such as protein synthesis, DNA replication, and muscle contraction. Cellular respiration does not involve the endoplasmic reticulum (D) or the outer membrane of a chloroplast (B).

The grana of a chloroplast (C) are stacks of thylakoid membranes that are engaged in photosynthesis, the process by which plants synthesize glucose and oxygen from sunlight, water, and carbon dioxide. They are not involved in cellular respiration.

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about 3 meters.

Explanation:

At actual size, a human cell's DNA totals about 3 meters in length. McGraw-Hill Encyclopedia of Science and Technology . New York, McGraw Hill, 2012. If stretched out, would form very thin thread, about 6 feet (2 meters) long.

Answer:

dd

Explanation:

ddd

Gene expression is the process by which genetic information is transcribed into proteins.

When a gene is turned on, it produces a protein that interacts with other proteins in the cell and causes a change in cell function. Gene expression is controlled by either negative or positive regulators.

Negative regulators are proteins that bind to the promoter region of a gene and inhibit its transcription. Positive regulators are proteins that bind to the promoter region of a gene and enhance its transcription.

When a gene's promoter region is bound by a negative regulator, the transcription of that gene will be inhibited. This means that the levels of protein produced from that gene will be decreased as well as their functions. On the other hand, when a positive regulator binds to the promoter region of a gene, it increases its transcription and production levels.

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Explanation:

Recent remains of plants or animals on topsoil are fossils.

The statement 'recent remains of plants or animals on topsoil are fossils' is TRUE about fossils.

Fossils are dead decomposed organisms (either plants or animals) that once lived on the topsoil of the Earth.

In conclusion, the statement 'recent remains of plants or animals on topsoil are fossils' is TRUE about fossils.

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There are several theories about the origin of life, but to know how to answer what the gap left by all theories of the origin of life, we need to know that.....

The origin of life on planet Earth is undoubtedly a subject that intrigues all of humanity. Several hypotheses have been created to explain such an event, but to date none has been completely proven.

In addition to the theological explanation that there was a God, who would satisfy the religious, experts seek to solve the enigma that does not let the minds that are dedicated to studying the subject rest.

Science generally accepts the Big Bang theory: the moment, about 13.8 billion years ago, when a great burst of light caused a dense sphere of matter to expand, becoming lighter and lighter. diluted, generating a Universe in continuous expansion.

Many of us, however, continue to have difficulty understanding in a rational way how a small point, smaller than an atom, contained an unimaginable density and energy capable of giving rise to everything that exists today.

Bearing in mind that the biggest gap in these theories is what there is before, what there is before God, or the big bang.

With this we come to the conclusion that the theories fail in what exists before and how everything happened before the great event of creation.

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1. Mutation in the human cells. When our bodies are cold the coldness responds back to our body by bringing air into it.

1. Mutation in the human cells. When our bodies are cold the coldness responds back to our body by bringing air into it.2 It can either increase me lan in or decrease it.

1. Mutation in the human cells. When our bodies are cold the coldness responds back to our body by bringing air into it.2 It can either increase me lan in or decrease it.3. Yes every generation is different.

1. Mutation in the human cells. When our bodies are cold the coldness responds back to our body by bringing air into it.2 It can either increase me lan in or decrease it.3. Yes every generation is different.4.An allee is A cell in our bodies which function blood cells. A gene is A trait from either a relative.

1. Mutation in the human cells. When our bodies are cold the coldness responds back to our body by bringing air into it.2 It can either increase me lan in or decrease it.3. Yes every generation is different.4.An allee is A cell in our bodies which function blood cells. A gene is A trait from either a relative.5. Meiosis Gives us more oxygen to breath in our Booties ☺ and our main body Functions.

1. Mutation in the human cells. When our bodies are cold the coldness responds back to our body by bringing air into it.2 It can either increase me lan in or decrease it.3. Yes every generation is different.4.An allee is A cell in our bodies which function blood cells. A gene is A trait from either a relative.5. Meiosis Gives us more oxygen to breath in our Booties ☺ and our main body Functions.6. Then that trait would most likely be passed on to the offspring/ Children.

1. Mutation in the human cells. When our bodies are cold the coldness responds back to our body by bringing air into it.2 It can either increase me lan in or decrease it.3. Yes every generation is different.4.An allee is A cell in our bodies which function blood cells. A gene is A trait from either a relative.5. Meiosis Gives us more oxygen to breath in our Booties ☺ and our main body Functions.6. Then that trait would most likely be passed on to the offspring/ Children.7. the most common form of Down syndrome, caused by an extra copy of chromosome number 21.

1. Mutation in the human cells. When our bodies are cold the coldness responds back to our body by bringing air into it.2 It can either increase me lan in or decrease it.3. Yes every generation is different.4.An allee is A cell in our bodies which function blood cells. A gene is A trait from either a relative.5. Meiosis Gives us more oxygen to breath in our Booties ☺ and our main body Functions.6. Then that trait would most likely be passed on to the offspring/ Children.7. the most common form of Down syndrome, caused by an extra copy of chromosome number 21.8. Both will collapse and collide together.

1. Mutation in the human cells. When our bodies are cold the coldness responds back to our body by bringing air into it.2 It can either increase me lan in or decrease it.3. Yes every generation is different.4.An allee is A cell in our bodies which function blood cells. A gene is A trait from either a relative.5. Meiosis Gives us more oxygen to breath in our Booties ☺ and our main body Functions.6. Then that trait would most likely be passed on to the offspring/ Children.7. the most common form of Down syndrome, caused by an extra copy of chromosome number 21.8. Both will collapse and collide together.9. Genetic Variation The process of a Trait getting passed down in various ways.

Explanation:

Answer:

false

because of we dont damage it and save it/conserve it we domt need to restore it

Answer:

b

Explanation:

Just trust me

Answer:

The food worker must properly label the spray bottle with what it contains to ensure that mixed up will not happen.

Chemicals are hazardous so it should be stored in their own designated place and avoid spraying sanitizing chemicals around food that is being prepared to evade contamination

Answer:

55.55556mols

Explanation:

Answers:

1. Nutrients: Abiotic

2. Air: Abiotic

3. Volcanic eruption: abiotic

4. Lion: biotic, Carnivores

5. Koala: biotic, herbivores

6. Typhoon: abiotic

7. Fire: abiotic

8. Rocks: abiotic

9. Vulture: biotic, scavengers (it eats dead organisms to grow)

10. Mushroom: biotic, scavengers (it eats dead organisms to grow)

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Answer:

petroleum i think

if not then natural gas

Explanation:

Answer:

C

Explanation:

This is the probably the most logical and correct answer. As the water hyacinth cover the surface of the water, the aquatic plants in the water will not have enough light for photosynthesis.

Answer:

- helps us stay on the ground (without gravity we would float and float into space and inevitably die)

- helps us hold things in our hands (even if we let go the objects won't go flying)

- makes it easy for us to do daily things

- lets us understand why things happen and why objects fall to the ground

- suns gravity helps keep the earth the great amount of distance away from the sun so we can get the exact amount of sunshine

Answer:

Genes and amino acid sequences.

Explanation:

The ancestor of whales and hippos are the same because of the same gene and amino acid sequence. The genes and amino acid sequences of living whales were the evidence that shows ancestry of whales and hippos. This evidence indicates that million of years ago both whales and hippos were split from a same ancestor due to evolution.

Answer:

Nucleotides

Explanation:

Nucleotides are what we refer to as "The building block of DNA" Nucleotides are made of phosphate and a sugar group.

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The name of this process is nitrification. Plants may absorb substances from soils like nitrate, nitrite, ammonia, and ammonium, which are subsequently utilised to create proteins in both plants and animals.

The nitrogen cycle involves a process known as nitrification, which transforms all ammonium ions or ammonia into nitrates. The nitrogen cycle is completed when nitrates are transformed back into atmospheric nitrogen during denitrification. Some microorganisms also participate in this process.

Nitrogen can be fixed by the atmosphere, the Haber Process, or biological activities. Nitrogen gas is split by lightning's high temperature, which then interacts with oxygen or moisture in the air to generate nitrates, which eventually drop to the ground in rain.

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Answer:

B. Mitochondrion

The DNA of the parent cell is the same DNA of the two daughter cells created in mitosis, since in this process there is no mixture of each homologous chromosome, in contrast to meiosis, where each homologous chromosome, do exchange fragments of them one with another.

Answer:

Hypertonic...hypotonic

Explanation:

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