Why are parasite numbers pyramids often inverted, with the bottom level smallest?.

A contractile ring is made up of actin filaments that constrict like a drawstring to fully divide the cytoplasm.

In biology, a contractile ring is formed during the cytokinesis process.

Generally, it is also called actomyosin because it composed of actin filaments and motor protein called myosin-2.

In a cell, it is present just below the plasma membrane and is formed along the cell's equator.

At the time of cell division, contraction occur in the contractile ring just at the equator and plasma contracts inward giving rise to a cleavage furrow that is responsible for splitting the cytoplasm.

Simply put, a contractile ring is responsible for cell division as it contracts and divided the singular cell into two.

If you need to learn more about cytoplasm click here:

https://brainly.com/question/174023

#SPJ4

Each gene's code makes use of the four nucleotide bases of DNA: adenine (A), cytosine (C), guanine (G), and thymine (T) — in numerous methods to spell out 3-letter “codons” that designate which amino acid is needed at every position inside a protein.

The genetic code exists as triplets and now not as a singlet or doublet because it does not provide sufficient data to synthesize proteins. There are only 4 nucleotides - A, C, G, and U. If the genetic code exists in a doublet layout, the handiest sixteen exclusive amino acids (4x4) can be formed.

Despite the fact that each codon is precise for the best one amino acid (or one prevent sign), the genetic code is defined as degenerate, or redundant, due to the fact an unmarried amino acid can be coded for via multiple codons.

Learn more about nucleotide bases here

https://brainly.com/question/14067588

#SPJ4

Answer:

The first statement is wrong and the second is right

Base pair rearrangements is not one of the basic types of gene mutation.

d. base-pair rearrangements

The DNA sequence of a gene is altered to generate a different result, which is known as a genetic mutation. The DNA sequence of that gene is permanently altered.

For humans to develop, which is the process of change over a number of generations, genetic variances are crucial. In one person, a spontaneous genetic mutation takes place. The genetic mutation of that person is passed down through generations (hereditary) to their offspring. If the mutation increases a person's likelihood of survival or immunity to disease, it starts to be handed down through generations and disseminated throughout the community. The mutation transforms from a gene variant into a normal gene as it is passed down from generation to generation and becomes a normal component of the human genome.

To know more about gene mutation visit:
https://brainly.com/question/462225
#SPJ4

Taking into account the definition of a system of linear equations, the cost of each postcard and the cost of each magnet are 1.25 and $2.35 respectively.

A system of linear equations is a set of two or more equations of the first degree, in which two or more unknowns are related.

Solving a system of equations consists of finding the value of each unknown which when replacing, all the equations of the system are satisfied.

In this case, a system of linear equations must be proposed taking into account that:

You know:

The system of equations to be solved is

6p + 4m= 16.90

3p + 3m=10.80

There are several methods to solve a system of equations, it is decided to solve it using the substitution method, which consists of clearing one of the two variables in one of the equations of the system and substituting its value in the other equation.

In this case, isolating the variable "m" from the second equation:

3m=10.80 - 3p

m= (10.80 - 3p)÷3

m= 3.6 - p

Substituting this expression in the first equation:

6p + 4×(3.6 - p)= 16.90

Solving:

6p + 4×3.6 - 4p= 16.90

6p + 14.4 - 4p= 16.90

6p - 4p= 16.90 - 14.4

2p= 2.5

p= 2.5÷2

p= 1.25

Remembering that m=3.6 - p, you get:

m= 3.6 - 1.25

m= 2.35

Finally, the cost of each postcard is $1.25 and the cost of each magnet is $2.35.

Learn more about system of equations:

brainly.com/question/14323743

brainly.com/question/1365672

brainly.com/question/20533585

brainly.com/question/20379472

#SPJ1

Fossilized carbon found in ancient plan and animal remains is said to be “transferred”, option D.

Fossils are the remains or inklings of prehistoric plants and animals found embedded in rocks and conserved in ossified forms. They consist of two types; trace and body fossils and are usually converted to fuel.

Carbon is an essential element on earth and its cycle describes how carbon transfers between reservoirs and organisms. It maintains stability of the climate and carbon balance of the earth. Fossilized carbon is transferred to ancient plants and animals which is converted to sediments.

Learn more on fossils here: https://brainly.com/question/11829803

#SPJ1

Answer: eroded

Explanation: I got it correct.

TLDs come in 3 official categories:

Generic Leading Domains (gTLD) : The gTLDs com, org, info, net, and biz are some examples of well-known ones. Early DNS-era generic and restricted TLDs demand documentation of eligibility for domain name registration. They are gov, mil, int, and Edu TLDs.

Top-level Domains sponsored :  The Internet Assigned Numbers Authority (IANA) distinguishes sponsored top-level domains  as a particular type or class of top-level domain (IANA). Specialized top-level domains are supported by sponsors who speak for the target audience of the domain. Ex cat ,.coop, .Edu, .gov

Continent Code Leading Domains : Continent code TLDs, or country-specific TLDs, are domain extensions that are unique to a certain region or state. They are also known as the letters that follow your selected domain name. Examples include. ca (Canada),. co.uk (United Kingdom), and.

Learn more about to top-level domains visit here;

https://brainly.com/question/28041008

#SPJ4

b. The differences in gendered communication are greater than most people think.

Men and women speak differently, and this topic of study is known as gendered communication. Because of the evolving conceptions of gender in the twenty-first century, this fascinating area has become even more complex.

The majority of study on gendered communication is on how various genders play diverse roles in the media, politics, sports, business, and academics. Examining comments made online by persons of different genders or looking at how genders have been portrayed historically in literature, art, and even state policy

Because their professional occupations center on public communication, students in an online Bachelor of Arts in Public Relations and Advertising learn experience in gendered communication. It's important to comprehend how genders communicate differently in order to create messages that are effective.

To know more about gendered communication visit:
https://brainly.com/question/28362121
#SPJ4

Answer:65to72

Explanation:

Answer:

D.

stability is the answer

Lipid-derived (soluble) hormones can enter the cell via passing through the plasma membrane, binding to DNA, and controlling gene transcription as well as altering the functions of the cell by triggering the creation of certain proteins.

These hormones must pass the cell membrane in order to enter the cell. The hormone-receptor complex attaches to certain DNA sequences and then travels into the nucleus where it functions as a transcription factor to either increase or decrease the production of particular genes.

Since cell membranes are composed of a lipid bilayer, lipid-soluble hormones can diffuse directly across both the membranes of the target cell and the endocrine cell where they are produced.

learn more about Lipid-soluble hormones refer

https://brainly.com/question/14703232

#SPJ4

Answer: See Below

Explanation:

If one nucleotide is the incorrect one that means that it is a transition or a transversion. Transition or transversion mutants may lead to no change in the protein sequence (known as silent mutations), change the amino acid sequence (known as missense mutations), or create what is known as a stop codon (known as a nonsense mutation).

Genetic expression may remain the same if the mutation does not occur in the promoter region however a pre-mature stop codon would cause a truncated protein to be created.

Incorrect nucleotides are transitions or transversions. Transition or transversion mutants may modify the protein sequence (silent mutations), the amino acid sequence (missense mutations), or generate a stop codon (known as a nonsense mutation).

A alteration in the DNA sequence of an organism is referred to as a mutation. Errors in the replication of DNA during the process of cell division, exposure to mutagens, or viral infections are all potential causes of mutations.

If there is a mistake in one of the nucleotides, this indicates that there was either a transition or a transversion. It is possible for transition or transversion mutations to result in the protein sequence remaining unchanged (this is referred to as a silent mutation), a change in the sequence of amino acids (referred to as a missense mutation), or the formation of a stop codon (known as a nonsense mutation).

The same level of genetic expression could be maintained if the mutation did not take place in the promoter region; nevertheless, the production of a shortened protein would result from the presence of an early stop codon.

Learn more about mutation, here:

https://brainly.com/question/13923224

#SPJ2

The genetic information for endotoxins are located Chromosomes

Lipopolysaccharides, a family of phospholipids that includes bacterial endotoxins, are found in the outer membrane of gram-negative bacteria (LPS). Gram negative bacteria do not produce LPS as an external byproduct. After the cell has died and been lysed, LPS is released by bacteria.

Lipopolysaccharides called endotoxins, which are found in the cell walls of Gram-negative bacteria, can cause fever and inflammation as an immunological reaction in higher species. Endotoxin reactivity can cause anaphylactic shock and patient mortality. The lipid A portion of LPS, which contains fatty acids and disaccharide phosphates, the core polysaccharides, and the O-antigen are its main components (see image). The fat molecule's endotoxin activity is caused by a fragment of LPS. Symptoms of endotoxin exposure that affect human health include sepsis and clinical

At lower doses, toxic pneumonitis, decreased lung function, and respiratory symptoms like byssinosis ("Monday morning chest tightness") can occur. Other symptoms include fever, shaking chills, and septic shock.

Based on the knowledge of microbial genetics and microbial pathogenesis, the genetic information for endotoxins are located in chromosomes

To know more about Endotoxins visit the given link below,

https://brainly.com/question/28238830

#SPJ4

Photosynthesis, energy is used to produce oxygen. Cellular respiration, carbon dioxide is used to produce energy.

Photosynthesis converts carbon dioxide and water into oxygen and glucose. Glucose is used as food by the plant and oxygen is used for breathing . Cellular respiration converts oxygen and glucose into water and carbon dioxide. Water and carbon dioxide are by products and ATP is energy generated  from the process.

Photosynthesis makes glucose which is used in cellular respiration for making ATP. The glucose is then transformed back into carbon dioxide, which is used in photosynthesis. It maintains the atmospheric balance of carbon dioxide and oxygen.

To learn more about Photosynthesis , here

brainly.com/question/1388366

#SPJ4

Answer:

Unicellular (or single-celled) organisms are made up of only one cell that carries out all of the functions needed by the organism, while multicellular organisms use many different cells to function. Unicellular organisms conciliate all the cellular activities by a single cell, while multicellular organisms carry out specific cell activities through a well-defined group of cells. Unicellular organisms include bacteria, protists, and yeast.

The type of motor proteins present on kinetochore microtubules during cell division stages include kinesin and dynein.

Kinesin and dynein are motor proteins that bind to microtubules during the movement of chromosomes such as occur during the anaphase of the cell division. These motor proteins require the hydrolysis of ATP in order to transport chromosomes to the poles.

Therefore, with this data, we can see that kinesin and dynein motor proteins transport chromosomes to the cell poles in a process that requires the hydrolysis of ATP.

Learn more about kinesin and dynein proteins here:

https://brainly.com/question/13425820

#SPJ1

Yes if global warming really were occurring, cold snaps wouldn't happen.

The term "global warming" describes a longer-term increase in the global average temperature. Global warming does not imply that this is happening uniformly throughout the world, though. It is possible that some areas of the world will warm up more quickly than others, and that there will be variations.

Climate change is now quantifiable due to global warming, but it is also the cause of all other climate-relevant changes, including those to our climate. By simultaneously measuring the temperature at several locations across the globe, scientists can calculate the average temperature of the planet. Because of the complexity, the values must be coordinated and, if necessary, modified.

Learn more about Global warming here:

brainly.com/question/7693783

#SPJ4

Answer:

1. The healthcare system in Canada is publicly funded and provides universal coverage to all residents. The system is based on the principles of accessibility, universality, and portability.

2. Healthcare in Canada is delivered through a combination of federal, provincial, and territorial governments. The Canadian healthcare system is one of the most expensive in the world, costing over $200 billion per year.

3. Canada has a highly skilled workforce of healthcare professionals, including doctors, nurses, and other health workers. However, the system is facing a number of challenges, including a shortage of doctors and nurses, and an aging population.

4. The Canadian healthcare system is facing a number of challenges, including a shortage of doctors and nurses, and an aging population.

5. The percentage of the provincial budget required to support the healthcare system is growing, partly because of very expensive technologies such as CT, PET, and MRI. Do you think the benefits of these technologies justify the costs? Explain your answer.

6. A concern related to our healthcare system is the wait time for medical tests and procedures. Use the Internet and local sources to research the wait times for various imaging procedures in your area. Write a brief report of your findings. Do you think

Explanation:

Color blindness contributes to racial inequalities because it perpetuates racial inequalities by making subtle forms of racism difficult to recognize and therefore difficult to address.

Colorblindness can be seen as a way to undermine minority groups' hardships, as it was once used to argue that the United States is a meritocracy in which people succeed solely because they work hard and not because of their privilege.

Colorblindness eliminates the possibility of race as a cause of mistreatment, making it more difficult to avoid or resolve future racial bias. Colorblindness is a racial ideology that holds that the best way to end discrimination is to treat all people equally, regardless of race, culture, or ethnicity.

The absence of color-sensitive pigment in the cone cells of the retina, the nerve layer at the back of the eye, causes color blindness.

To learn more about color blindness, here

https://brainly.com/question/25621649

#SPJ4

The adaptation of amniotic eggs was the most important in enabling the first terrestrial animals to eliminate their dependence on aquatic habitats.

The amniotic egg was the main evolutionary development that allowed terrestrial animals to bring the "pond" inland and lessen their reliance on water for reproduction. It was possible for vertebrates to reproduce on land thanks to the development of the amniotic egg, which was a significant adaptation. A developing egg needs to be in the water to avoid the embryo drying out without the self-contained source of energy and water.

Many people believe that the evolution of the terrestrial egg in amniotes (reptiles, birds, and mammals) is one of the most important moments in the history of vertebrates. This egg developed on land and gave birth to well-developed, terrestrial offspring thanks to the presence of an eggshell, fetal membranes, and a sizable yolk.

Learn to know more about Adaptation on

https://brainly.com/question/29594

#SPJ4

Only CPR is bound to lac operon

For the transportation and metabolism of lactose, the E. coli operon known as Lac Operon is necessary.

Lac operon operation is explicable as follows:

E.coli has the genes necessary for lactose metabolism, and they are located in the lac operon. Lactose does not prevent the gene from being expressed.

According to the lactose and glucose levels, the regulators' "on" and "off" states are put to use. Both catabolite activator protein and lac repressor are regulators.As a lactose sensor, the lac repressor typically prevents the operon from being transcribed when lactose is not present. An operon's transcription is activated when the glucose level is low by the glucose sensor catabolite activate protein. An operon called Lac Operon is present in E. coli and is necessary for the operon to have genes involved in metabolism. Only when lactose is present and glucose is absent do the genes come into play. Catabolite activator protein and lac repressor are the two proteins that control how much glucose and lactose is present in the body. The operon's transcription is prevented by the lac repressor.

In normal e. Coli cells,  lac operon is "on," CPR combination of c r p and lac repressor proteins is bound to the lac operon

To know more about Lac operon refer to the link below

https://brainly.com/question/9739412

#SPJ4

According to size, chromosomes are assigned numbers.

Two identical daughter cells are produced during mitosis, and both of these cells have the same amount of chromosomes as their parent cell. But during meiosis, four distinct daughter cells are produced, each of which contains half as many chromosomes as the parent cell.

Eukaryotes often have many pairs of linear chromosomes that are all housed in the cell nucleus and have distinct and adaptable shapes. For instance, during cell division, they condense and can be seen under a light microscope in this condensed form.

To know more about chromosomes visit:-

https://brainly.com/question/28483276

#SPJ4

The location in the nephron where ion reabsorption takes place to create a hyposmotic ascend limb of a Henle loop.

What in biology is hypotonic?

A hypotonic solution contains fewer solutes than an isotonic solution. A solution outside the cell is referred to as hypotonic in biology if its solute concentration is lower than that of the cytoplasm. Osmotic pressure causes water to permeate into cells, giving them a turgid or bloated appearance.

What is an example of hypotonicity?

A solution with a low solute concentration than the cell is said to be hypotonic. A solution and a solvent are combined to form solutions. Compared to the solvent, the solution is the component that is present in a smaller amount.

To more about Hypotonic visit :

https://brainly.in/question/1301519

#SPJ4

Ascending limb of the loop of Henle the reabsorption of ions occur in the nephron to produce a hyposmotic solution in the tubules.

Nephrons are the tiniest structural and functional unit of the kidney. Its structure consists of a tubule or a glomerulus. The renal corpuscle is made up of the glomerulus, a web of arteries, and Turner's capsule. There is a connection between the corpuscle and the tubule.

Approximately one million tiny nephrons make each kidney. Each nephron is made up of a minuscule filter named a nephron that is connected to a tubule. The nephron filters fluid and waste as blood passes through it.

To know more about Nephrons visit:

https://brainly.com/question/12307837

#SPJ4

Option A: cartilage serves as levers for movement by skeletal muscle is not a function of cartilage.

The bodily components that act as levers to produce human movement are bones, ligaments, and muscles. To put it simply, a joint—where two or more bones come together—serves as the axis (or fulcrum), and the muscles that cross the joint exert the force necessary to move a weight or resistance. Therefore, option A in incorrect for cartilage.

In order to protect your joints and bones, cartilage, a strong, flexible connective tissue, is used. It serves as your body's overall shock absorber. In addition to this, cartilage acts as a supporting structures for the body. It reduces friction by providing smooth gliding surface and helping the bones slide softly without causing any damage.

To know more about cartilage, refer to the following link:

https://brainly.com/question/13061803

#SPJ4

Uncontrolled cell division is a risk because our body has a time line that must be met to facilitate metabolic functions at the intra and extracellular level.

When cell divisions occur in an uncontrolled way, our body is at risk due to pathologies such as cancer, this disease is generated by external factors and even by internal uncontrollability.

The chemical substances secreted in our organs even lead to uncontrolled cell divisions, multiplying this process in other systems, which leads to oncogenic metastasis. Therefore, it is extremely important to check our health to avoid risks that are irreversible once they occur in our body.

For more information about Uncontrolled cellular division here: https://brainly.com/question/9493236

#SPJ4

Using natural resources such as trees, water, or rangeland in a wise, regulated, or planned manner so that it is not destroyed but can be used and renewed indefinitely is known as Sustainable Development.

A resource is any material that is available to us in our surroundings that is economically viable, technologically accessible, and culturally sustainable and that enables us to meet our needs and desires.

A guiding principle in sustainable development is maintaining the capacity of natural systems to continue providing the natural resources and ecosystem services that are essential to the economy and society without destroying the natural resources

Sustainable development is a broad term to describe policies, projects and investments that provide benefits today without sacrificing environmental, social and personal health in the future. These policies are often described as green because they focus on limiting the impact of development on the environment. However, the benefits of sustainable development are also felt across a wide cross section of human health and well-being, including reductions in pollution- and environment-related disease, improved health outcomes and decreased stress.

Hence, using natural resources such as trees, water, or rangeland in a wise, regulated, or planned manner so that it is not destroyed but can be used and renewed indefinitely is known as Sustainable Development.

To know more about Sustainable development visit

https://brainly.com/question/19904792

#SPJ1

_____Sex________ refers to the socially agreed upon physical and biological differences between bodies, while ______Gender_______ refers to the socially agreed upon meanings and symbols representing what society agrees to masculine or feminine.

The World Health Organization's Regional Office for Europe explains that sex is a biologically defined trait, whereas gender is based on socially constructed traits. They recognize that there are differences in how they experience gender based on how they perceive and express themselves and how they behave. Essentially, almost everyone is born with physical characteristics designated as male or female. In 1964, Robert Stoller1 coined the term gender identity to refer to an individual's personal perception of one's gender and inner feelings. It is a deeply ingrained inner sense of self that is usually identified with oneself. Gender identity, unlike sexual identity, has nothing to do with a person's sexual orientation.

Sex is usually categorized as female or male, but there are differences in the biological attributes that make up gender and how those attributes are expressed. Gender refers to the socially constructed roles, behaviors, expressions, and identities of girls, women, boys, men, and gendered people.

To know more about gender identity visit:

https://brainly.com/question/28941153

#SPJ4

The trend for women to delay childbirth until their late 20s or early 30s has continued while the peak years for female fertility are late adolescence and early adulthood.

Female fertility is a woman's ability to give birth to a biological child. Generally, the peak reproductive years for women are between the late teens and late 20s. The ability to get pregnant starts to decline by age 30.

There are several things one can do to promote female fertility:

Learn more about female fertility at https://brainly.com/question/7302468

#SPJ4

Answer: b. About +66 mV

Explanation: