They will make 4 daughter cells
Mitosis makes 2 daughter cells
Which statement is an example of a scientific theory?
A.
The amount that caffeine affects a person's heart rate differs based on the person's age.
B.
The Earth is the third planet from the Sun and has one moon, which orbits the Earth.
C.
All living organisms are composed of one or more cells, which came from pre-existing cells.
D.
Hummingbirds do not like the color white because they visit other colored flowers more often.
Correct answer: C). All living organisms are composed of one or more cells, which came from pre-existing cells.
It is an example of cell theory. The cell theory in a biology is a theory which is given after conclusion and observation of many scientists and is universally accepted a theory.
It states that all the living organism are made of one or more than one cells and the cell is the building block of all the living thing and all the cell arise from the pre-existing cells.
Answer:
B. All living organisms are composed of one or more cells, which came from pre-existing cells.
Just took the test!! :)
how does the structure of an amino acid relate to its function in cellular processes
The function of the protein is determined by the sequence of the amino acid. The function of protein is determined by its shape, and the shape of the protein is determined by the sequence of nucleotide which is present in the gene which encodes for the protein.
These sequence determine the primary, secondary and tertiary structure of protein which depends mainly on the folding of the protein. And the biological function of the protein such as enzymatic, signalling and structural is determined by these structure.
Example: Each enzyme has a active site where substrate binds in order to carry out reactions. The shape of amino acid depends on the sequence of amino acid and protein folding.
Thus, the structure of amino acid sequence is dependent on the its function.
The structure of an amino acid is directly related to its function in cellular processes.
Explanation:The structure of an amino acid is directly related to its function in cellular processes. Amino acids, which are the building blocks of proteins, have a central carbon atom bonded to an amino group, a carboxyl group, a hydrogen atom, and an R group or side chain. The R group is what gives each amino acid its unique properties and determines its function in cellular processes.
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Which process provides immunity against antigens and pathogens in the body fluids? A. nonspecific response B. inflammatory response C. humoral immunity D. cell-mediated immunity
The process provides immunity against antigens and pathogens in the body fluids is called humoral immunity .
Hence, option C is correct .
Humoral immunity is mediated by the complement proteins, antimicrobial peptides and antibodies etc. It is called humoral immunity because it is found in body fluids and humors.
The humoral immunity provides immunity against the antigens and pathogens that are circulating in the body fluids, such as the lymph and blood. The humoral immunity involves the B-cells and helper T cells. It is also known as the antibody-meditated response. The B-cells recognize the pathogens. When the B cells are activated with the help of the helper T cells, they proliferate and produce plasma cells containing the antibodies.
Hence, the answer is 'Option C - humoral immunity'.
The two part naming system that Linnaeus developed, classifies organisms by their __________ and________.
Why are proteins important to cell?
They do most of the work in cells and are required for the structure, function, and regulation of the body's tissues and organs. For example, enzymes are proteins that speed up chemical reactions in the body and hormones, like insulin, are proteins that regulate the activity of cells or organs. Some proteins transport materials throughout your body, such as hemoglobin, which is the oxygen-transporting protein found in your red blood cells.
if the birth rate of a population is higher than the death rate and the immigration and emigration rates remain the same the population size increase or decrease
The size of the population will increase.
Example:According to the situation, If 100 is the birth rate and 10 is the death rate. immigration and emigration rate are both 5.Then the population will increase by 90 individual every year. It means if the population is 400 this year, next year it will be 490.
what is the difference between copper and silver
Answer:
Compared to copper silver has only slightly less resistivity however it has a higher density so on a resistivity to mass basis the two are roughly identical. Copper is also more malleable and ductile than silver and can be shaped easier and put under stress without damage.
Most biological macromolecules contains carbon, hydrogen and oxygen atoms. Which of these has the carbon, hydrogen and oxygen in a 1:2:1 ratio?
A) carbohydrates
B) lipids
C) oils
D) proteins
Answer:
Carbohydrates.
Explanation:
Biomolecules may be defined as the important chemical molecules that are present in the living organism. Four important bio molecules are carbohydrates, proteins, lipids and nucleic acids.
The carbohydrates contains the carbon, hydrogen and oxygen in its basic structure. The sugars are the monomers of the carbohydrates. The carbohydrate structure consists of carbon, hydrogen and oxygen in a 1:2:1 ratio.
Thus, the correct answer is option (A).
To maintain the current population density, which of the following must occur?
A. The death rate must be higher than the birth rate
B. The birth rate must be higher than death rate
C. The birth rate and death rate must stay the same with migration at 0
D. The birth rate and death rate must stay the same while migration can continue to rise
Hmm, well I think the answer is C.
I would say Answer A & B are incorrect because if the death rate was higher, soon there would be 0 people on earth. And B is incorrect because soon there would be overpopulation, the death rate would only slow this factor down.
So I believe C is the best answer out of C & D
Hope this helps you, Have a great day!
Final answer:
To maintain current population density, the birth rate and death rate must remain the same with no migration, allowing the population to remain stable.
Explanation:
To maintain the current population density, the correct option is C. The birth rate and death rate must stay the same with migration at 0. This scenario ensures that the population remains stable over time. In the demographic transition model, stages represent different combinations of birth and death rates affecting population size. In Stage 4, for example, the birth rate reaches the same low level as the death rate, which results in zero population growth. This aligns with the understanding that equal birth and death rates, without the influence of migration, keep the population density steady. Factors such as population growth rate, demographic transition, and the balance between births and deaths are critical in understanding how populations change over time.
How might Earth be different if the ozone layer did not exist
Life would not exist. The ozone layer is keeping all the gasses from escaping into space. So, without the ozone layer, there would be no oxygen for animals or carbon dioxide for plants. The ozone layer also reflects space radiation and harmful UV rays back into space, preventing them getting into the Earth's atmosphere.
Without the ozone layer, Earth would be exposed to high levels of UV radiation, leading to increased rates of skin cancer, eye cataracts, disrupting ecosystems, and preventing complex life on land. International efforts have mitigated the depletion of the ozone layer by regulating harmful chemicals.
If the ozone layer did not exist, Earth would be dramatically different. The ozone layer, composed of ozone (O3), absorbs and protects living organisms from the Sun's harmful ultraviolet (UV) radiation. Without this protective layer, increased levels of UV radiation would reach Earth's surface, leading to more severe consequences for life forms.
For instance, higher UV levels would immensely increase the risk of skin cancer and eye cataracts in humans. Additionally, it would disturb the nitrogen cycle, critical for plant growth, and kill off plankton, which are foundational to ocean food webs. The absence of the ozone layer would have prevented complex life from developing on land, leaving the planet barren and inhospitable for most current life forms.
Which two groups of organisms contain members that carry out photosynthesis?
Cyanobacteria, algae and tracheophytes.
PLEASE ANSWER THIS WORTH 40 POINTS. I NEED HELP WITH LAST 3
When Low Tides Occur: Theyy occur when the gravitational forces of the Moon and the Sun are perpendicular to one another
When High Tide Occurs:It occurs when the moon is both, unusually close to the Earth (at its closest perigee, called the proxigee)
How Often High Tide Occurs High tides occur 12 hours and 25 minutes apart
Answer:
When Low Tides Occur: Theyy occur when the gravitational forces of the Moon and the Sun are perpendicular to one another
Explanation:
How plants use chlorophyll for photosynthesis
Chlorophyll works as food for plants to convert carbon dioxide, water and the energy from sunlight to create glucose (food) and oxygen
what argument does dr. douglas use with dr. brodus to allow the study to continue
The argument or the reason that Dr. Douglas used with Dr.
Brodus in allowing the Tuskegee study to continue despite of certain
circumstances was because of validation in terms of the autopsy in which he
stated that is needed in order to know whether the study is reliable and it is considered
to be science.
The answer is that Dr. Douglas uses the argument that the study should continue because it has the potential to benefit many people, including those who are not currently sick.
To understand Dr. Douglas' argument, we must consider the ethical principles at play in medical research. Dr. Douglas is likely advocating for the principle of beneficence, which is the ethical obligation to help others and to contribute to the health and welfare of others. By continuing the study, there is the potential to discover new knowledge that could lead to improved health outcomes for a broader population, not just those who are immediately ill.
Dr. Brodus, on the other hand, might be concerned about the principle of non-maleficence, which is the obligation not to harm others. This principle would necessitate careful consideration of the risks and benefits of the study, especially for participants who may not directly benefit from the research.
Dr. Douglas' argument is grounded in the idea that medical research often involves a certain level of risk, but if the potential benefits to society are significant, then it may be ethically justifiable to proceed with the study, provided that the risks to participants are minimized and that participants give informed consent.
In summary, Dr. Douglas' argument is based on the ethical principle of beneficence, emphasizing the potential for the study to provide significant benefits to society, including individuals who are not currently sick. This perspective is balanced against the need to ensure that the study's risks are acceptable and that the rights and welfare of participants are protected.
A __________ is another name for a group of elements with similar properties on the periodic table of elements?
The vertical columns on the periodic table are called groups or families because of their similar chemical behavior. All the members of a family of elements have the same number of valence electrons and similar chemical properties. The horizontal rows on the periodic table are called periods
A Family is another name for a group of elements with similar properties on the periodic table of elements.
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What is the difference between a solution and a suspension?
The difference between a solution and a suspension is in the particle sizes involved. A solution is a mixture of molecules and ions. Solutions are see through. A suspension has bigger particle sizes so it may look cloudy
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Whats one risk for society when cloning animals?
One risk for society when cloning animals is a decrease in genetic diversity, which can lead to negative consequences. Cloned animals may also experience health problems or abnormalities, and there are ethical concerns surrounding the cloning process.
Explanation:One risk for society when cloning animals is a decrease in genetic diversity. Cloning involves creating genetically identical copies, which limits the genetic variability within a population. This can have negative consequences, such as increased susceptibility to diseases and lack of adaptability to changing environments.
Another risk is the potential for unintended consequences in the cloned animals' health and development. Clones may exhibit health problems or abnormalities due to errors or mutations introduced during the cloning process.
Furthermore, there are ethical concerns associated with cloning animals. The process of cloning can be considered unnatural and raises questions about the treatment of cloned animals and the implications for their welfare.
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In which phase are the molecules move freely?
which organisms are most likely to survive in a population in which disruptive selection is occuring?
Which of the choices below is one of the primary gases found in the atmosphere?
A.
Oxygen
B.
Carbon Dioxide
C.
Argon
D.
Helium
Oxygen is your answer. :)
Answer:
Oxygen
Explanation:
Study Island
Why are there two types of endoplasmic reticulum?
Hi there,
The two types of endoplasmic reticulum is the rough endoplasmic reticulum (rough ER) and smooth endoplasmic reticulum (smooth ER)
Hope this is correct :)
Have a great day
The types of endoplasmic reticulum are
Rough endoplasmic reticulumSmooth endoplasmic reticulumExplanationBoth rough and smooth endoplasmic reticulum are present in animals and plant cell. Rough endoplasmic reticulum has ribosomes attached on their surfaces. Their main function is the synthesis of proteins. Smooth endoplasmic reticulum is involved in the Detoxification process. They export waste material from cell the to its external environment with the help of Golgi apparatus.
Draw a 2n=6 organism performing mitosis
Here are some pics that i hope are useful to you
what is the function of plasmid in a prokaryotic cell?
Prokaryotic cells are the primitive type of cells that lacks organelles and a true nucleus. The plasmid of the prokaryotic cell confers the antibiotic resistance ability to the bacteria.
What are plasmids?Plasmids are defined as the extrachromosomal genetic material present along the nucleoid of the prokaryotic cell. They are small circular structures that are present in the cytoplasm of protozoans and bacteria.
They are the double-stranded DNA molecules that are constituted of the genes that confer antibiotic resistance ability to the prokaryote and are helpful in the survival of the prokaryotes. It also protects them from enzyme degradation.
Therefore, plasmids are the extra genetic material that confers antibiotic resistance to the prokaryotic cells.
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How are the functions of a carbohydrate and a lipid similar? Both lower the activation energy of reactions. Both dissolve nutrients in the digestive system. Both are a source of energy. Both are replicated during meiosis.
The function of Carbohydrate and lipid are similar as both are a source of energy.Thus, option C is correct.
What is biomolecules?Biomolecules are the biological chemical compounds present in living organisms including chemicals that are composed of mainly carbon, oxygen, hydrogen, nitrogen.
Biomolecules are the base of life as they are building blocks of body and perform important functions in the body of living organisms.
The four major biomolecules are nucleic acid, carbohydrate, protein, and lipids.
Carbohydrates:
It a biomolecule consisting of carbon, hydrogen and oxygen atoms as these are essential type of biomolecule compound.they are made up of small monomers known as monosaccharides.Lipids:
These are insoluble in water and provide a high amount of energy.The main function of lipid is they work as a chemical messenger.
Therefore, the function of carbohydrate and lipids are similar as both are a source of energy.Thus, option C is correct.
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which is the largest organelle with a eukaryotic cell
which factor is most likely to cause a faster rate of blood flow
For plato users: Exercising
Answer: Plato answer
D) exercising
Explanation:
what is the Earth's core made of
Final answer:
The Earth's core is primarily made up of iron and nickel, with a solid inner core surrounded by a liquid outer core that generates the Earth's magnetic field.
Explanation:
The Earth's core is composed primarily of dense metals, predominately iron and nickel. The core can be subdivided into two parts: the outer core, which is in a liquid state and is responsible for Earth's magnetic field, and the inner core, which is solid due to the immense pressure it is under. The core also contains some amount of sulfur. The materials in the core are at a very high density due to the pressure of the overlying layers. The Earth's core begins at a depth of about 2,900 kilometers and has a diameter larger than the planet Mercury.
the following image shows a cell before and during the process of mitosis. Before it undergoes mitosis, the cell contains 2n chromosomes
** PLATO **
Answer:
A. the cells will have 2n chromosomes and be diploid.
Explanation:
Mitosis is a type of cell division in which a cell divides into two identical daughter cells. If mother cell is diploid (2n) the daughter cells will be identical having the same diploid (2n) chromosomes. It begins with the division of the nucleus (karyokinesis) followed by division of cytoplasm (cytokinesis). It is an equational division, occurs when organisms require to produce a large number of identical cells.
How are traits important to natural selection?
A thin flexible semipermeable barrier around the cell which regulates what enters and leaves the cell
Answer: The plasma membrane
Explanation:
The plasma membrane also known as the cell membrane, is a covering that surrounds and delimits the cell, separating it from the external environment. It functions as a barrier between the inside of the cell and its environment by allowing molecules to enter and exit through it. This passage of molecules is a phenomenon called permeability. But the membrane does not let all the molecules pass easily, so it is selectively permeable. The cell membrane is characterized by a dynamic structure, with fluidity being one of its most important features. This fluidity is temperature-dependent, as it increases with increasing temperature. It also depends on the nature of the lipids that it possesses, since the presence of unsaturated and short-chain lipids favors the increase of fluidity. The presence of cholesterol hardens the membranes, reducing their fluidity and permeability. Other functions of the cell are related to transport, communication, recognition and cell adhesion.
In the composition of the membrane 40% corresponds to lipids, 50% to proteins, and 10% to carbohydrates.
The lipids that make up the membrane are phospholipids, glycolipids and cholesterol, and their main function is to act as a semi-permeable barrier. The proteins that form the membrane are integral or peripheral, and their functions are related to transport and communication. Carbohydrates are generally bound to lipids, forming glycolipids, and to proteins, generating glycoproteins. Their main function is to constitute the cellular cover or glucocalix. The different functions that the different cells exhibit are related to the type of carbohydrate that is in their cover.The lipids that form the plasma membrane are mainly phospholipids. They form a double layer in which their hydrophilic heads are exposed and their hydrophobic tails are hidden. In each layer of the lipid bilayer the lipids are in continuous lateral movement, giving the membrane its fluid quality. Membrane proteins are embedded in the lipid bilayer and their proportion varies from cell to cell. Those on the outer surface or inside the lipid bilayer are peripheral proteins. Those that penetrate the bilayer are integral proteins. While the lipid bilayer determines the basic structure of the membrane, the proteins can perform multiple functions such as:
Receptors, which pick up substances from the environment and trigger intracellular responses. Enzymes, accelerators of chemical reactions. Transporters, channels and pumps, in charge of allowing and regulating the passage of substances through the membrane.
In order to live and grow, cells need to constantly receive nutrients and eliminate waste substances before they accumulate in the cell and cause damage. The cells also secrete substances produced by themselves. All nutrients, waste and secretions must pass through the membrane. There are three general ways in which substances pass through the plasma membrane:
Passive transport (no energy required) , examples are osmosis, simple diffusion, facilitated diffusion, dialysis.Active transport (requires energy) , molecules cross the plasma membrane against a concentration gradient, i.e. from a low concentration zone to a high concentration zone with the consequent expenditure of energy.Vesicles-mediated transport , examples are endocytosis and exocytosis.
The cell membrane, also known as the plasma membrane is a thin, flexible barrier that surrounds every living cell, delimiting the cell from the environment around it.
The cell membrane is made of two layers of phospholipids, which are amphipathic molecules with a hydrophilic head and a hydrophobic tail. The hydrophilic heads face the aqueous environment inside and outside the cell, while the hydrophobic tails are sandwiched in between.
This structure allows the cell membrane to be selectively permeable, meaning that it only allows certain molecules to pass through.
The cell membrane is a vital part of every living cell. It plays a role in a wide range of cellular functions, and it is essential for the survival of cells.
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