When a cell performs its normal functions, it must exchange substances with the world outside the cell membrane. Cells with a large surface area to volume ratio can exchange substances more efficiently.
Maximizing the surface area of this organ system is important. This is because the greater the surface area of the cell the better the digestive mechanism and the greater the absorption of simplified nutrients.
Digestibility increases with increasing surface area. An explanation for this is a mechanism that accelerates and supports the number of enzymes involved in digestion, and this is one of those enzyme individuals that work more effectively on larger surfaces.
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What is the main idea of Mendel's principle of independent assortment?
The inheritance of one character has no bearing on the inheritance of another, according to Mendel's principle of independent assortment. In other words, distinct qualities are inherited independently of one another by their various alleles.
Mendel experimented with cross-bred pea plants that were true-breeding for a variety of traits, such as seed color and seed shape, in order to find this principle.
He discovered that the alleles for seed color and shape did not share an inheritance pattern and that each allele was transmitted to progeny separately.
This principle can be explained by the fact that each gene is located on a different chromosome and during the formation of gametes, the chromosomes are separated randomly during meiosis, leading to the formation of different combinations of chromosomes in each gamete. As a result, the alleles of different genes are inherited independently of one another.
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2. What is the resting phase for cells that are currently not in the process of division or cells that do not intend to divide, such as the nerve
cells in your brain?
Go
G2
Os
G₁
Answer: Go, all the other options are stages that involves changes to the cell during the cell cycle (e.g., G1/G2 = cell growth, and processes involving the organelles, Synthesis = DNA replication)
Why did Mendel carry out an experiment to study inheritance of two traits in garden pea?
Mendel carried out experiments to study the inheritance of two traits in garden pea as garden pea are bise-xual, self-pollinating, have a short life span and also have visible phenotypic characters.
Mendel conducted plant-breeding experiments using garden pea. He studied the inheritance of two traits to understand if the inheritance of a particular trait affects the inheritance of another trait.
He chose garden pea for his experiment as they are bise-xual in nature, that is the flowers have both male as well as female reproductive parts and therefore are able to self-pollinate. They also have easily observable physical characters and a short life span which makes them easier to maintain as they grow quickly.
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Help this is due in 30 minutes. Could a Type B child with a Type A mother have a Type A father? Explain.
no
cuz both are type A so the child has to be a type A
Answer:
It depends
Explanation:
It honestly depends on if the A-type allele is dominant over the B allele if not yes it's possible if the father or mother was Heterozygous with a B allele
Suppose that you ate a chicken sandwich on a wheat roll with lettuce, tomatoes, and onions for lunch. As you ate, you took in food molecules from both plants and animals. Explain why all the energy in the food molecules of this sandwich could be traced back to the sun.
Food provides the body with energy-rich substances such as glucose. When these molecules reach the body's cells, they are broken down in a series of processes to reform carbon dioxide and water, providing energy for the body to use.
The energy in meals is converted into energy that the body's cells may utilise through the process of cellular respiration. The sugars in your meals are initially processed into the simple sugar glucose, a monosaccharide. Remember that glucose is the sugar that the plant produces during photosynthesis.
All of the energy present in food molecules that humans consume may be traced back to the Sun's energy. This is because all food comes from primary producers, who manufacture food via the process of photosynthesis. Photosynthesis is the process through which plants make food.
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***HELP PLZ****Which of the following is not needed to maintain diversity in an ecosystem? I think is C
Keystone species
Producers
Invasive species
Consumers
Answer:
Invasive species
Explanation:
Ecosystems are very delicate and need many species to maintain balance. However, invasive species are unnecessary. Invasive species are animals or plants that are introduced into an environment that they did not originate in or are not native to. They tend to hurt the ecosystem because they consume resources that the native species need.
Answer:
Invasive species
Explanation:
Hope this helps
What is the purpose of the world on the turtle's back?
The purpose of the world on the turtle's back is because they think that there must be both good and evil in order to keep the world in a state of equilibrium.
According to tradition, the creator goddess severed the cosmic turtle's legs and used them to raise the sky after another god had harmed them. Even if it doesn't exactly put a terrapin at the center of the cosmos, it nonetheless places one there to keep the sky from collapsing.
The nice and the evil are not always what they seem to be, and vice versa, since there is always something within each and every person that can pull them in any direction. as shown in "A World on a Turtle's Back," a short fiction.
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Neurons respond preferentially to the right eye or the left eye. This phenomenon is referred to as _____.
a. hemispheric specialization
b. bilateral dominance
c. retinotopic disparity
d. ocular dominance
Neurons preferentially react to either the right or left eye. This characteristic is known as ocular dominance.
Ocular dominance, also known as dominant eye, occurs when one eye is used more than the other, when one eye has greater vision, or when one eye has stronger focus. Determining which eye is dominant might be useful for tasks that demand concentration on a goal. Baseball is one of these activities.
Ocular dominance, also known as eye preference or eye condition, is the proclivity to favor visual information from one eye over the other. This is analogous to right-handed or left-handed laterality. The dominant eye side and dominant hand side, on the other hand, do not always correspond. Identifying your dominant eye is essential while participating in activities like baseball, shooting range, or golf. Photographers can also improve their images by using their dominant eye. Shooters can better aim their targets using their dominant eye.
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What are the 5 theories of evolution?
Evolution as such, common descent, gradualism, species diversification, and natural selection are the five hypotheses that Darwin united.
A theory is a rationale for how a natural phenomenon functions that has undergone extensive testing through research and experiments intended to establish the validity of the explanation. In this context, evolution might be considered both reality and a theory. The fact that creatures have altered or evolved over the course of Earth's history is undeniable. Additionally, scientists have looked into the mechanisms that could account for the main patterns of change in biology. Since it provides a comprehensive account of events that have taken place in the natural world, evolution is referred to as a theory.
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Planes, factories, and cars affect the carbon
cycle by:
Answer:
They affect the cycle by adding more/extra carbon into the atmosphere.
Explanation:
Carbon moves from fossil fuels to the atmosphere when fuels are burned. When humans burn fossil fuels to power factories, power plants, cars, planes, and trucks, most of the carbon quickly enters the atmosphere as carbon dioxide gas.
what do you mean by environment conservation?
Answer:
Environmental conservation is the protection, preservation, management, or restoration of natural environments and the ecological communities that inhabit them.
Hope this helps! :)
Explanation:
In simple words environment conservation is basically the practice of us humans to save the environment from collapsing.
hope this helps.
There's a Hair in my Dirt, takeaway
Answer:
gomenasai i dont understand
What is an irony definition?
Definition of irony as a narrative character is a scenario in which there is a contradiction between expectations and reality.
A scenario in which there is a contradiction between expectation and realities is what literary irony is defined as. For instance, the contradiction between what something seems to signify and what it actually means. Tragic and comic events are both connected to irony.
The word "irony," which first appeared in the English language in the sixteenth century, is derived from the Latin word "ironia" and the French word "ironie." All of these expressions have their roots in Eiron, a stereotypical figure from ancient Greece. An Eiron figure defeats his adversary by exaggerating his weaknesses, partaking in a form of irony by expressing less than what he really means.
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What are the main features of bacteria?
Some of the main features of bacteria are that they unicellular, prokaryotic, they lack membrane bound organelles, are microscopic in size and lack a nucleus.
Bacteria are single-celled or unicellular organisms which have the ability to thrive in a wide range of conditions and are found almost everywhere in the environment. These organisms are microscopic and hence they cannot be seen with bare eyes without a microscopic.
They have a cell wall which is protective in function but do not contain a nucleus and also lack membrane bound cell organelles and hence are prokaryotic organisms. Their mode of nutrition can be either heterotrophic or autotrophic. They are found in different shapes like spherical, rod-shaped etc.
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Nucleus plays an important role in cellular reproduction and cellular functions
It is true that nucleus plays an important role in cellular reproduction and cellular functions, but the reason given is not the correct explanation. The correct option is B.
What is nucleus?In terms of genomics, a nucleus is the organelle within a cell that is membrane-enclosed and houses the chromosomes.
In the nucleus is genetic material. The DNA in the cell is primarily necessary for both cellular reproduction and cellular activities.
Proteins and DNA make up chromosomes, which are found in the nucleus. The information needed to organise and build cells is contained in DNA molecules.
The functioning DNA segments are referred to as genes. It has been discovered that chromatin material in a cell that is not being dispersed contains some DNA.
Thus, the correct option is B.
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Your question seems incomplete, the complete question is:
Assertion- Nucleus plays an important role in cellular reproduction and cellular functions.
Reasons- Nucleus contains chromosomes which are made up of DNA which contain information for constructing and organising cells.
a) If both Assertion and Reason are the true and Reason is the correct explanation of Assertion.
b) If both Assertion and Reason are true but the Reason is not the correct explanation of Assertion.
c) If Assertion is true but Reason is false.
d) If assertion is false but Reason is true.
Which of the following statements about a gene that shows maternal effect inheritance is true?
O Offspring will have a mutant phenotype if the father has a mutant genotype.
O Offspring will show a mutant phenotype if the mother has a mutant genotype.
O Embryonic cells transcribe the gene.
O Offspring will always show a mutant phenotype if they have a mutant genotype.
A gene that shows maternal effect inheritance is a gene that is expressed in offspring only if the mother has a mutant genotype.
The offspring will show a mutant phenotype if the mother has a mutant genotype, regardless of the father's genotype. This means that the offspring will not necessarily have a mutant phenotype if the father has a mutant genotype.
This type of gene expression is regulated by the maternal environment, which includes both the mother's genotype and the environment in which she lives. Embryonic cells transcribe the gene, and so the gene is expressed in the offspring. However, the gene's expression can be suppressed or enhanced depending on the environment in which the mother lives.
Offspring will not always show a mutant phenotype if they have a mutant genotype. This is because the gene may be expressed in the offspring only if the maternal environment is favorable for expression. If the environment is not favorable, the gene may be repressed, and the offspring will not show a mutant phenotype.
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a que se debe el origen de la variación entre los individuos de una especie
a. El medio ambiente
b. La selección natural
c. la reproducción sexual
d. un agente ignorado
A biologist is interested in studying the effect of growth-enhancing nutrients and different salinity (salt) levels in water on the growth of shrimps. The biologist has ordered a large shipment of young tiger shrimps from a supply house for use in the study. The experiment is to be conducted in a laboratory where 10 tiger shrimps are randomly placed into each of 12 similar tanks in a controlled environment. The biologist is planning to use 3 different growth-enhancing nutrients (A, B, and C) and two different salinity levels (low and high). List the treatments that the biologist plans to use in this experiment. Using the treatments listed in part (a), describe a completely randomized design that will allow the biologist to compare the shrimps' growth after 3 weeks. Give one statistical advantage to having only tiger shrimps in the experiment. Explain why this is an advantage. Give one statistical disadvantage to having only tiger shrimps in the experiment. Explain why this is a disadvantage.
a) The treatment groups are
1) Three different Growth-enhancing nutrients A, B and C
2) Salinity levels at two different levels low and high
b) Experimental units : Young tiger Shrimps
c) There are two independent variables
1) Salinity levels
2) Growth enhancing nutrients
d) Response variable : Growth of shrimps
A growth curve is a graphical depiction of a phenomenon's evolution through time. A growth curve might be a graphic that shows the rise in population of a country over time. The availability of nutrients and energy is one of the most important variables for growth.
Temperature, moisture, pH levels, and oxygen levels are the four key physical and chemical conditions regulating microbial growth. Microbial proliferation is influenced by intrinsic, extrinsic, and implicit dietary components, as well as diverse food processing processes. These variables influence microbial growth in food as well as the specific metabolic pathways that microbes utilise to create energy and metabolic byproducts.
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What are the 5 causes of natural selection?
Natural selection is a simple mechanism that causes populations of living things to change over time. It causes are variation, Inheritance, Selection, Time and Adaptation.
Natural selection results in the transmission of advantageous genetic variants through reproduction. As a result, a new generation of organisms emerges that has a higher chance of surviving and reproducing.
Variation. Organisms (within populations) exhibit individual variation in appearance and behavior. Inheritance. Some traits are consistently passed on from parent to offspring. High rate of population growth.Differential survival and reproductionTo learn more about reproduction please visit here:
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What did you notice in the music when the dynamic marking changed?
Dynamics play a big role in music. We frequently experience feelings like rage and even excitement when we listen to punk music. Comparing this to listening to ballads is completely different.
What in the music when the dynamic marking changed?The print notations known as dynamic markings are used to instruct musicians on how loud or soft to play a piece of music. Words, word acronyms, or symbols can all be used as dynamic marks in music.
Therefore, Dynamics words for shifts include crescendo and decrescendo. The progressive increase in volume of the music is known as a crescendo. A diminuendo, also known as a decrescendo, is when the music progressively gets weaker.
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Is medical a fixed or variable expense?
Medical is a variable expense.
Medical expenses include all costs required for the diagnosis, mitigation, or treatment of disease or injury. Medical expenses include things like health and dental insurance premiums, doctor and hospital visits, co-pays, prescription and over-the-counter medications, glasses and contacts, crutches, and wheelchairs, to name a few.
Medication and supplies are examples of variable costs because they vary according to the quantity and severity of patients treated. The majority of hospitals have a limited amount of operational flexibility, unlike regular businesses that can shift operations to reduce fixed costs.
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Which of the following statements characterized meiosis 1?
The statements that characterize meiosis I are:
B) The chromosome number remains the same from n to n.
C) Homologous chromosomes line up at the cell equator.
E) The chromosome number is reduced from 2n to n.
F) Each chromosome consists of two sister chromatids.
H) Crossing over can occur during synapsis.
What is the meiosis stage about?Meiosis I is the first of two cell division events that occur during meiosis, a type of cell division that produces gametes (sex cells). Meiosis I is characterized by several key events, such as:
Homologous chromosomes line up at the cell equator: During meiosis I, homologous chromosomes (pairs of chromosomes that are similar in shape and size and carry genes for the same traits) line up and pair with one another at the cell equator. This process, called synapsis, allows for the exchange of genetic material between the chromosomes through a process called crossing over.
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See full question below
Which of the following statements characterize meiosis I? Select all that apply.
Multiple select question.
A)Four nuclei start to form around the chromosomes.
B)The chromosome number remains the same from n to n.
C)Homologous chromosomes line up at the cell equator.
D)Sister chromatids are pulled apart at the centromeres.
E)The chromosome number is reduced from 2n to n.
F)Each chromosome consists of two sister chromatids.
G)Sister chromatids line up at the cell equator.
H)Crossing over can occur during synapsis.
The structures of the amino acids serine, proline, and glycine are shown:
The first diagram is of the amino acid serine. Serine is composed of a two carbon backbone. The first carbon is bound one amino group, one hydrogen atom, and one carboxyl group. The other carbon is bound to two hydrogen atoms and one hydroxyl group. The second diagram is of the amino acid proline. Proline is composed of a ring. The ring is made up of four carbons and one nitrogen. Three of the carbons are bound to two hydrogen atoms. The nitrogen is bound to one hydrogen atom. The final carbon is bound to one hydrogen atom and one carboxyl group. The third diagram is of the amino acid glycine. Glycine is composed of a carbon bound to two hydrogen atoms, one carboxyl group, and one amino group.
The secondary structure of a protein consists of a single long beta sheet. The outer edges of the beta sheet are composed of serine and proline amino acids.
Explain how the structure of amino acids determine the function.
A mutation occurred in DNA of a globular enzyme. If the serine amino acids were found within the active site of the enzyme, describe the effect this change is likely to have on enzymatic function.
If a mutation in the DNA of a globular enzyme changed all of the serine and proline amino acids to glycine, predict how the relative position of the amino acid on the secondary structure of the beta sheet would be affected when the protein is placed in an aqueous solution.
Justify your prediction by providing evidence that supports your claim.
The primary structure of a protein, its amino acid sequence, drives the folding and intra-molecular bonding of the linear amino acid chain, which ultimately determines the protein's unique three-dimensional shape.
What are the functions of proteins?Proteins are large, complex molecules that play many critical roles in the body. They do most of the work in cells and are required for the structure, function, and regulation of the body's tissues and organs.
Protein has many roles in your body. It helps repair and build your body's tissues, allows metabolic reactions to take place and coordinates bodily functions. In addition to providing your body with a structural framework, proteins also maintain proper pH and fluid balance.
There are seven types of proteins: antibodies, contractile proteins, enzymes, hormonal proteins, structural proteins, storage proteins, and transport proteins.
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If someone engages in a short, intense burst of activity lasting less than 30 seconds, which energy system will contribute the most to ATP production
The phosphagen energy system will contribute the most to ATP production during a short, intense burst of activity lasting less than 30 seconds. This energy system utilizes ATP and phosphocreatine to provide energy for activities that require an immediate burst of energy.
The phosphagen energy system is a vital component of energy production during short, intense bursts of activity lasting less than 30 seconds. This energy system is responsible for providing energy for activities that require an immediate burst of energy. The main source of energy used in this system is the ATP and phosphocreatine stored in the muscle cells.
When the body is put under an intense physical demand, the phosphagen energy system is activated. This system works quickly and efficiently to produce ATP, the energy currency of the body. ATP is produced through a process called phosphorylation, where a phosphate molecule is added to ADP. The body uses ATP for a variety of biochemical processes, including muscle contraction.
The phosphagen energy system is the most efficient at providing energy for short-term, intense physical activity. It is able to quickly and efficiently produce enough ATP to meet the body’s energy demands. The phosphagen system is also able to replenish ATP stores in the muscle cells more quickly than other energy systems. This makes it ideal for activities such as sprinting and weightlifting, which require an immediate burst of energy.
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2. How does sneezing protect us from germs?
The following passage (paragraph 5) mainly shows that fill in the blank_______. By the time Dale leaves college in 1908, his parents are still poor, but corporate America is booming. Henry Ford is selling Model Ts like griddle cakes, using the slogan “for business and for pleasure.” J.C. Penney, Woolworth, and Sears Roebuck have become household names. Electricity lights up the homes of the middle class; indoor plumbing spares them midnight trips to the outhouse.
Based on the short passage above. The passage mainly shows that corporate America is booming.
What is the passage about?The passage describes the state of the economy and society in the United States around the time when Dale leaves college in 1908. It mentions specific examples of companies and products that have become successful and well-known, such as Henry Ford's Model T cars, J.C. Penney, Woolworth, and Sears Roebuck retail stores.
The passage also notes that electricity and indoor plumbing have become more common in middle-class homes. All of these details demonstrate that the American economy is experiencing a period of growth and prosperity, as businesses are expanding and new products and technologies are becoming widely available.
Therefore, the passage implies that the prosperity of corporate America contrasts with the poverty of Dale's parents, suggesting that not everyone is benefiting equally from the economic boom
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Explain biological principles behind preservation of meat by refrigeration
Answer:
yes because at the room temperature the bacteria and fungi grow but in the refrigerator the temperature is lower than the room temperature which is not sufficient for growing microbes due to which we preserve in refrigerator.
I hope u understand
A normal or narrow QRS complex indicates that the impulse was not formed in the ventricles and is termed:
A normal or narrow QRS complex indicates that the impulse was not formed in the ventricles and is termed supraventricular tachycardia.
Narrow (normal) QRS complexes indicate that the ventricles are depolarized normally; this can only be the case if the impulse (which depolarizes the ventricles) passes through the bundle of His, and hence it originates in the atria. In other words, tachycardias with narrow QRS complexes originate in the atria.
A narrow QRS complex (<120 ms) reflects rapid activation of the ventricles via the normal bundle of His-Purkinje system, which in turn suggests that the arrhythmia originates above or within the His bundle so supraventricular tachycardia occurs. Although such type of tachycardia often occurs in patients with a normal heart and rarely represents life threatening conditions.
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Why is the e-waste harmful?
Answer:
the components used to make devices such as laptops, cell phones, and televisions, contain metals and chemicals known to harm human health
Explanation:
What are Mendel's 4 hypotheses and what does each mean?
(1) Principle of Paired Factors is the first of Mendel's four postulates and principles of heredity. (2) The Law of Segregation or Law of the Purity of Gametes (Mendel's First Law of Inheritance), (3) The Dominance Principle, and (4) The Law of Independent Assortment
In his law of segregation, he put forth the concept of paired components being separated during the creation of gametes. According to Mendelian law, every pair of unit components would separately assort into brand-new gametes.
Only one version of a trait will emerge in the offspring of two parents who have different, opposing characteristics, according to Mendel's law of dominance. The dominant trait will be the only phenotypic trait that the hybrid offspring exhibits. The dominance law is the fundamental rule of inheritance.
Because a gamete only contains one of the two alleles dominant or recessive and not both, the law of segregation is also known as the law of pure gametes.
The development of reproductive cells causes various genes to separately separate from one another, according to the Principle of Independent Assortment. During his research on the genetics of pea plants in 1865, Gregor Mendel made the first observation of an independent assortment of genes and their related phenotypes.
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