Aquatic organisms are able to survive when the temperature decreases. These organisms survive even when the surfaces of lakes and ponds are covered with ice. Which property of water best explains how aquatic organisms can survive during freezing temperatures?
Answers
Answer:
Anomalous expansion
Explanation:
Anomalous expansion of water is the abnormal way water expands when exposed to low temperature.
At 4 degree Celsius , the density at the top layer is usually at the Maximum which makes the water sinks down and then the water in the lower layer rises up.
When the temperature drops below 4 degree Celsius, the water molecules at the top then freezes leaving the denser molecules at the bottom which doesn’t freeze as a result of their high density.
This way, organisms can survive in the water due to the lower layer not freezing.
Related Questions
Note: your teacher will review your response to this question to ensure you receive proper credit for your answer. The pH scale is a measurement system that indicates the concentration of _______ in solution.
please help
Answers
Answer:
hydrogen and hydroxide ions
Explanation:
The pH scale indicates the concentration of hydrogen ions (H+) and hydroxide ions (OH-) in a solution.
This simulation only shows positively charged ions. How can one side of the membrane have a net negative charge in this scenario?
Answers
If the simulation only shows positively charged ions, it is possible that the negative charge on one side of the membrane is due to the presence of negatively charged molecules or ions that are not included in the simulation.
Alternatively, the negative charge may be a result of an unequal distribution of positively and negatively charged ions on either side of the membrane, which could be due to various factors such as ion channels, pumps, or other transporters. Therefore, it is important to keep in mind that simulation may not always accurately represent the complete picture and other factors should be taken into consideration when interpreting the results.
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How are cells and DNA related?
Answers
Answer:
The DNA never leaves the nucleus so it can't actually do the function of the cell. Instead, the DNA is like a blueprint made up of genes. The genes are read by the cell's nuclear machinery and produce specific proteins. Each gene codes for a specific protein.
Explanation:
can all the plants prepare their food? why?
Answers
Which of the following would be
considered an example of genetic
modification?
A. monitoring the offspring of a plant to see the different
types
B. rotating crops in a field
C. adding a gene to the DNA of a cow to produce more milk
D. releasing ladybugs on a field to eat pest insects
Answers
The example of genetic modification is adding a gene to the DNA of a cow to produce more milk. Thus, option C is correct.
What is genetically modified organisms?Genetically modified organism are those organisms in which the technology of genetic engineering is used to change their genetic makeup. Due to this change in genetic makeup allow the organisms to resist against disease causing microorganisms, pesticides and also increased the productivity of crops. In animals, genes are change to increase milk or meat production.
I would not be willing to eat the genetically altered crops. This is majorly because extensive research has not been carried out on these crops to ascertain if there are any future possible side effects of eating these foods. It is very essential that long term study be carried out on these crops to determine their full effects on humans.
Therefore, The example of genetic modification is adding a gene to the DNA of a cow to produce more milk. Thus, option C is correct.
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PLEASE HELP!
What situation is an example of artificial selection?
Select one:
a. More African elephants today naturally lack tusks compared to the elephant populations 100 years ago, because big game hunters sought elephants for ivory.
b. Female bluegill fish prefer to lay their eggs in the nests of larger male fish.
c. Albino deer or rabbits have a low survival rate in nature, because it is easy for predators to spot them.
d. Penguins with higher body fat tend to survive nesting in the Antarctic winter, while leaner penguins often die.
Answers
Answer: A
Explanation: In artificial selection, humans determine what traits get passed down. For B, humans play no role in where the fish lays her eggs. For C, humans aren’t the ones killing the deer and rabbits — natural predators are. As a result, humans play no role. For D, humans also play no role in deciding which penguin lives.
For A, however, humans have caused African elephants to naturally lack tusks because of their hunting — this wasn’t natural or due to the environment. This was due to human intervention. As a result, it is artificial selection.
What is Storm water?
Answers
Answer:
Storm water is:surface water in abnormal quantity resulting from heavy falls of rain or snow.
Explanation:
Hope i helped u dear.
Consultar los tipos de biotecnología según sus aplicaciones. Dar ejemplos
Answers
Answer:
¿Qué aplicaciones tiene la biotecnologia actualmente?
Ejemplos de biotecnología
Antibióticos.
Cultivos de bacterias y levaduras.
Leche descremada, fortificada o larga vida.
Aportes a la lucha contra el cáncer.
Producción de biocombustibles.
Plantas transgénicas.
Plásticos biodegradables.
Vacunas.
insufficient intake of protein during pregnancy is very common in the u.s.why?
Answers
Insufficient intake of protein during pregnancy is very common in the U.S. because many women in the country do not consume an adequate amount of protein-rich food items, which is essential for healthy fetal growth and development.
During pregnancy, the demand for protein increases in the mother's body, as it helps in the growth and development of the fetus. Protein is required for the development of the fetus' organs, muscles, and tissues, which in turn influences the growth rate of the fetus.
Insufficient intake of protein can lead to various adverse pregnancy outcomes such as low birth weight, impaired growth, preterm delivery, and other complications. It is thus essential for pregnant women to consume an adequate amount of protein-rich foods in their diet to ensure proper fetal growth and development.
According to the National Health and Nutrition Examination Survey (NHANES), many pregnant women in the U.S. fail to meet the recommended daily protein intake. This is because of the high consumption of processed food items and low intake of protein-rich food items like dairy products, nuts, seeds, and legumes.
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Suppose you had a plant cell with a chromosome number of \( 2 n=4 \) and you knew that the gene for leaf colour was on one pair of chromosomes and the gene for bark smoothness was on a different pair of chromosomes. Use the letters G and H to represent the genes. a. Draw a chromoses diagram to accurately represent this plant cell during metaphase I of meiosis. assume that all of the alleles for leaf colour and bark smoothness are recessive.
Answers
A chromoses diagram to accurately represent this plant cell during metaphase I of meiosis can be seen in the figure below. In this diagram, two chromosomes, each containing two genes G and H, are shown.
The alleles for leaf colour and bark smoothness are both assumed to be recessive and are represented by lower case letters. The two chromosomes are arranged in homologous pairs, with the two genes G and H lined up with each other in the same orientation.
At metaphase I of meiosis, the two homologous chromosomes, each containing two genes G and H, are lined up in the middle of the cell, ready to separate and form four daughter cells.
During this stage, each chromosome is replicated and split into two identical copies, so that each of the four daughter cells will contain one copy of the two chromosomes, with one copy of each gene G and H. This process of separation and replication ensures that the genetic information is passed down from generation to generation accurately.
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Which of these Is NOT a type of habitat?
A) a desert
B) a mountain
C) a rainforest
D) the world
Answers
Answer:
D
Explanation:
Its kinda hard to explain but the world is more like a planet(?) and not a type of habitat since anything can live on it
Answer:
D- the world
Explanation:
Bjr pouvez vous m'aider
Answers
Answer:
no entiendo este idioma soy nuevo y hablo español
What is the concentration of carbon dioxide in this sample
Answers
Answer:
38.2 mmita. 6. Draw conclusions: Between the right ventricle and the left atrium,
Explanation:
Proteomics is the study of the number of different proteins that a gene produces. Why might this be a more complete snapshot of human genetics than genomics? в то = = т т.
Answers
Proteomics is the study of the entire set of proteins produced by a cell or organism while genomics is the study of the complete set of genes present in an organism.
Proteomics gives a more complete snapshot of human genetics than genomics because proteins are the workhorses of the cell and carry out most of the biological functions in an organism. Proteins are responsible for gene expression and protein function, so by studying proteins, we can gain a more comprehensive understanding of how genes contribute to the phenotype.
Proteomics is the large-scale study of proteins. It is a multidisciplinary field that includes molecular biology, biochemistry, biophysics, and other disciplines. Proteomics research aims to identify all of the proteins that an organism produces, understand their function and structure, and investigate how they interact with each other and with other molecules in the cell. Proteins are vital building blocks of the cell and perform a variety of functions. They are involved in everything from gene expression to immune function to metabolism, and they play a key role in virtually every biological process that occurs in the body. By studying proteins, researchers can gain a better understanding of how the body works at a molecular level.
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Please help me????????!!!!!!!!!!!!!!!!???????!!!!!?????!!!?
Answers
Answer: ur mentally unstable if u dont know
Explanation:
L student
which is not a negative impact of concentrated animal feeding operations (cafos)? group of answer choices high concentrations of animal waste increase in nutrients in stormwater runoff more land used than in other types of animal farming increase in strains of antibiotic resistant microorganisms
Answers
Concentrated animal feeding operations do not have a detrimental environmental impact while using more land than other methods of animal farming (CAFOs).
What drawbacks do concentrated animal feeding practises have?Nitrate and other nutrient buildup in surface water is a possible result of contamination. Ammonia is frequently discovered in the surface waters close to CAFOs. Ammonia reduces the amount of oxygen in the water, which can destroy aquatic life.
A CAFO is what?A large-scale cattle operation is referred to as a CAFO, or concentrated animal feeding operation. Even the tiniest CAFO produces as much pee and waste as 16,000 humans do in faeces and urine combined.
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When changing the light colour, how should the student get an accurate measurement of the rate of photosynthesis of the pondweed? Do not reference light intensity.
Answers
These guidelines, the student can obtain accurate measurements of the rate of photosynthesis in pondweed while changing the light color this experimentation will provide insights into how different wavelengths of light affect photosynthetic activity and contribute to our understanding of plant biology.
To obtain an accurate measurement of the rate of photosynthesis in pondweed while changing the light color, there are several key considerations for the student:
Light Source: Ensure a consistent and controllable light source. This can be achieved using a standardized light fixture or lamp with a known light spectrum.
It is important to use a light source that emits a range of wavelengths, as different colors of light affect photosynthesis differently
Wavelength Selection: Select specific wavelengths of light to investigate. This can be achieved by using color filters or LED lights with different colors.
The student should choose a range of colors spanning the visible spectrum, including red, green, and blue light, as they have varying effects on photosynthesis.
Experimental Setup: Set up a controlled environment for the pondweed. Place the pondweed in a clear container filled with water and ensure the plant is healthy and acclimated to the environment.
Use a suitable apparatus to measure the oxygen produced during photosynthesis, such as a floating leaf disk or a dissolved oxygen sensor.
Experimental Procedure: Expose the pondweed to one color of light at a time. Start with a control group under white light, representing natural sunlight.
Measure the rate of photosynthesis by recording the time it takes for the oxygen bubbles to rise or the change in dissolved oxygen levels.
Replicates and Data Analysis: Repeat the experiment for each color of light multiple times to obtain reliable results.
Calculate the average rate of photosynthesis for each color. Analyze the data to identify any patterns or trends in the rates of photosynthesis under different light colors
Control Variables: Keep other factors constant throughout the experiment, such as temperature, carbon dioxide concentration, and the distance between the light source and the pondweed.
These variables can influence photosynthesis and should be monitored and controlled carefully
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what deos the food chain start with?
Answers
Water pollution review …
1. When neighborhood resident noticed a large number of dead fish in a local creek they traced the problem to a nearby gas station. It turned out that a gasoline tank has developed a leak this is an example of
A. Point-source, B. nonpoint -source pollution, C. thermal pollution, D. groundwater pollution.
2. Which of the following is a point-source? A. An abandoned mine, B. Runoff city streets, C. Precipitation containing air pollution, D. Runoff from farms.
3. What would the drawbacks be to a wastewater plant connected to a water treatments facility?
A. Increased energy usage, B. Decks matter in the water, C. There are no real drawbacks, D. An overabundance of wastewater would get pumped directly into our water resources .
Answers
2. D) Runoff from farms
3. D) Abundance of wastewater ..
What is the primary source of energy in a food change
Answers
Answer:
It is the sun in most ecosystems as the light energy is fixed during photosynthesis and then transferred to other organisms via the food chain.
Explanation:
the spinning of earth around its axis is called
Answers
Answer:
Rotation
Explanation:
describes the circular motion of an object around its center
Is phospholipid bilayer the same as cell membrane?
Answers
The cell membrane is composed of two layers of phospholipid molecules, but also contains other macromolecules such as membrane proteins, and carbohydrates.
The lipid bilayer (also known as the phospholipid bilayer) is a thin polar membrane composed of two layers of lipid molecules. These membranes are flat sheets that surround all cells in a continuous barrier. Almost all animals and many viruses have lipid bilayer cell membranes, as do the nuclear membrane encircling the cell nucleus and the membranes of the cell's membrane-bound organelles.
The lipid bilayer acts as a barrier, keeping ions, proteins, and other molecules where they are needed and preventing them from diffusing into locations they should not be.
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ILL GIVE BRAINLIEST JUST TO LET YOU KNOW ASAP
What is the relationship between tissues and organs?
• Scientists find life on Mars that is not made of cells.
• Scientists identify a cell organelle that practices the process of photosynthesis.
• Scientists determine that an organism is living if it is made of twenty structurally-identical cells.
• Scientists gather life from a volcano that is composed of cells which are very different from humans.
Answers
Answer:
Tissues and Organs? Cells are the basic building blocks of life, which can join together to form tissues, while different groups of tissues join together to form organs.
Explanation:
What are some functions of calcium?
Select all that apply.
-making teeth strong
-helping with muscle function
-making amino acids
-helping water balance
Answers
Answer:
-making teeth strong
-helping with muscle function
Explanation:
Calcium is a nutrient that all living organisms need, including humans. It is the most abundant mineral in the body, and it is vital for bone health.
The correct functions of calcium are:
Making teeth strongHelping with muscle functionHelping water balanceTherefore, the correct options are A, B and D.
In the body, calcium plays an important role and supports a variety of processes. It is essential for strong teeth and bones as it provides stability and support. For muscles to contract, nerve impulses must be transmitted, and calcium plays an important role in this process.
Additionally, it helps regulate water balance, promoting optimal cellular hydration and fluid balance inside the body. However, calcium is not directly required for the synthesis of amino acids. Its many roles in skeletal strength, muscle activity and cellular hydration highlight how important it is to maintaining general health.
Therefore, the correct options are A, B and D.
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Your question is incomplete, most probably the complete question is:
What are some functions of calcium?
Select all that apply.
-making teeth strong-helping with muscle function-making amino acids-helping water balanceTo respond to a chemical signal, a cell must have a ….. to which the signaling molecule can bind
Answers
Answer:
To respond to a chemical signal, a cell must have a receptor to which the signaling molecule can bind. Receptors are proteins that are embedded in the cell membrane or located within the cell. They have a specific shape that allows them to bind to specific signaling molecules, such as hormones or neurotransmitters. When a signaling molecule binds to its receptor, it triggers a response within the cell, such as a change in the activity of certain enzymes or the expression of specific genes. This process is known as signal transduction and is an important way that cells can communicate and respond to their environment.
Explanation:
how did autotroph and heterotroph lead to a two kingdom classification system
Answers
Answer:Autotrophs are organisms that can produce their own food from the substances available in their surroundings using light (photosynthesis) or chemical energy (chemosynthesis). Heterotrophs cannot synthesize their own food and rely on other organisms — both plants and animals — for nutrition. Technically, the definition is that autotrophs obtain carbon from inorganic sources like carbon
Explanation:
The DNA of a cell is not
programmed to coordinate the
activities needed to keep a large
cell alive. How does cell division
help the cell avoid DNA overload?
A. When a cell divides there is much less DNA
created than in the large cell, increasing the
overload.
B. Each daughter cell has its own copy of DNA
and can coordinate all the activities of a smaller
cell.
C. Cell division does not help cells to avoid DNA
overload.
Answers
Answer:
the DNA of a cell is not programmed to coordinate the activities needed to keep a. large cell alive. how does cell division help the cell a void DNA overload
The process of cell division helps the cell to avoid DNA overload by the following mechanism:
Each daughter cell has its own copy of DNA and can coordinate all the activities of a smaller cell.Thus, the correct option for this question is B.
What is Cell division?Cell division may be defined as a process through which a parent cell significantly divides into two daughter cells with an identical amount of genetic material.
DNA overload deals with the mechanism of the larger the cell, the greater the requirement for the positioning of the cell's DNA. In order to prevent this mechanism, a cell undergoes the process of division that limits the phenomena of DNA overloading.
This happens with the help of synthesizing two new daughter cells that limit the size of the parental cell.
Therefore, the correct option for this question is B.
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Hurry brainlest What events occur during interphase ?
Answers
Answer:
The cell grows and makes a copy of its DNA
Explanation:
During the mitotic (M) phase, the cell separates its DNA into two sets and divides its cytoplasm, forming two new cells.
The diagram below represents a microscopic view of blood. Cell A
protects the body by producing specific chemicals in response to
pathogens. Cell A is........
1.)A red Blood cell
2.)A bacteria cell
3.)An insulin producing cell
4.)A white blood cell
Answers
Heart is slightly tilted towards right. Give reason.
Answers
Answer:
The heart is slightly tilted towards the left side because of the larger size of the right lung than left lung. This provides enough space for the heart to work properly and pump blood efficiently to different parts of the body. ... heart is tilted towards left not towards right
Answer:
I thought it was more tilted to the left because the right lung is bigger than the left
Explanation: