An open jar of tea which exchanges both energy and matter with its surroundings is an example of what type of system?

Answer:

Which of the following best describes veins? a. thick walled, small lumens, low pressure, lack valves b. thin walled, large lumens, low pressure, have valves c. thin walled, small lumens, high pressure, have valves d. thick walled, large lumens, high pressure, lack valves

Explanation: yw have a good day

Answer:

absorption

Explanation:

drug absorption

The action that occurs when the drug is absorbed into the bloodstream is Antagonist. The correct option is d.

A substance or chemical known as an antagonist lessens the effects of an agonist. Competitive antagonists prevent the effects of agonists by attaching to the same location on a receptor as the agonist but without activating it.

A drug used in medicine that blocks the effects or actions of another medication. For instance, an oestrogen receptor antagonist is a medication that prevents oestrogen from activating tumour cells.

A chemical that can attach to and functionally activate a target is called an agonist. Usually, a metabotropic and/or ionotropic receptor is the target.

A chemical known as an antagonist binds to a target and blocks the binding of other compounds. The action of receptors is unaffected by antagonists.

Thus, the correct option is D.

For more details regarding antagonist action, visit:

https://brainly.com/question/9455401

#SPJ2

when one human cell 46 DNA molecules divides by mitosis, the cell then splits in two by a process called cytokinesis, creating two clones of the original cell, each with 46 monovalent chromosomes.

What is Mitosis?

Mitosis is a type of cell division in which a cell (mother cell) divides to produce two new cells of her (daughter cells) that are genetically identical to itself. In the context of the cell cycle, mitosis is the part of the mitotic process in which the DNA in the cell's nucleus is divided into her two equal sets of chromosomes.

The purpose of mitosis is to form more diploid cells. It works by copying each chromosome and spreading the copies out on different sides of the cell.

Mitosis is required for growth, repair, and asexual reproduction. It plays an important role in the development of organisms. In unicellular organisms, mitosis is thought to be the process of asexual reproduction.

learn more about mitosis:

https://brainly.com/question/29776367

#SPJ4

Answer:

The answer is D.

Explanation:

People moved to the cities to find jobs because they could not find jobs anywhere else. Most people go their work in factories. Many of the jobs where unsafe and many people lost fingers or other body parts.

Answer:

D. To find jobs

Cities provided more job opportunities that people were interested in taking advantage of since majority at the time only farmed

Answer:

Of the many important reasons to worry about the thousands of fires raging in the world’s largest rainforest, oxygen supply is not one of them.

Explanation:

l think this the answer

Answer:

hope this helps u pls mark me brainlist

Explanation:

s well as the vivid beauty that comes with great diversity in plants and animals, rainforests AAalso play a practical role in keeping our planet healthy.

By absorbing carbon dioxide and releasing the oxygen that we depend on for our survival. The absorption of this CO2 also helps to stabilize the Earth's climate.

Rainforests also help to maintain the world's water cycle by adding water to the atmosphere through the process of transpiration which creates clouds. Water generated in rainforests travel around the world; scientists think that moisture generated in the forests of Africa ends up falling as rain in the Americas!

Answer:

The lack of topsoil inhibits the growth of more diverse organisms in the region.

Explanation:

Following catastrophic or destructive events, primary succession occurs with the growth of the microorganisms. Here a non-habitable area is exploited by a colonizing organism.  For instance, lichens and moss break down rock and decompose to add nutrients to sediment creating topsoil.

Ultimately, these make the environment more livable by nutrient cycling, weathering, etc., which ushers in secondary succession. Here over time, the cultures become more dynamic, more diverse and an ever-larger food web.

In the first stage of primary succession after there has been a volcanic eruption, the soil quality will be poor. Plants that are good soil formers, such as lichens and moss, will improve the soil. Over time, with increasing plant diversity, rich soil with humus will form that will improve water retention. Taller and more diverse plants will allow for more filtered sunlight and more moderate soil temperatures.

Answer:

The term that describes the relationship in which one organism lives inside the other one is endosymbiosis.

Explanation:

A focus group is comprised of members of the company's target market. This allows the company to gather valuable insights and feedback on their products or services from perspective of their potential customers.

Focus refers to the concentration of attention, energy, or effort on a particular task, goal, or objective. It involves directing one's mental and physical resources towards a specific purpose, often with the intention of achieving desired outcomes. When someone is focused, they are fully engaged and immersed in their activities, minimizing distractions and maintaining a clear and single-minded mindset. Focus is essential for productivity, efficiency, and effective decision-making. It allows individuals to prioritize tasks, manage time effectively, and maintain a sense of clarity and purpose. Developing and maintaining focus requires discipline, concentration, and the ability to block out distractions in order to devote attention to the task at hand.

Learn more about Focus here;

https://brainly.com/question/31034581

#SPJ11

Eukaryotic gene expression is predominantly regulated at the transcriptional initiation stage. Proteins that bind to particular regulatory regions (such as promoters) and modify the activity of RNA polymerase regulate transcription in eukaryotic cells.

For example, in herpes thymidine kinase promoter's relatively straightforward structure of CCAAT and GC boxes, many genes in mammalian cells are regulated by sequences that are farther away (often more than 10 kilobases) from the transcription start point. These sequences, referred to as enhancers, were first discovered in the SV40 viral promoter.

For effective transcription from this promoter, two 72-base-pair repeats located further upstream are necessary for addition to a TATA box and a set of six GC boxes. Surprisingly, neither the distance from nor the orientation in relation to the transcription start site had an effect on the activity of these sequences, which were discovered to induce transcription from additional promoters in addition to that of SV40.

To learn more about promoters click here

brainly.com/question/16067527

#SPJ4

Adhesion is the tendency of multiple debris or surfaces to dangle to at least one some other. The binding of a cell to some other cell, or a cell to a surface, through unique cell adhesion molecules.

A fibrous band of scar tissue that binds collectively usually separate physical structures. Cohesion and adhesion are  water houses that describe how water molecules have interaction with every different. and the way water molecules have interaction with different such things as leaves or maybe you. Cohesion method that water likes to paste to itself. and adhesion method that water likes to paste to different things.

Adhesive Bonding is the system of becoming a member of  surfaces collectively, typically with the advent of a clean bond. This may also contain using glue, epoxy, or certainly considered one among a huge variety of plastic dealers which bond both via the evaporation of a solvent or via curing through heat, time, or pressure.

Learn more about adhesion here  https://brainly.com/question/1214644

#SPJ1

Options are not given properly.

Answer:

A cell carries out all the processes of the body which includes producing energy and storing it, making proteins which are molecules which have roles in metabolism, transportation of other molecules and DNA replication.

The environment can greatly affect phenotype. Factors such as diet, temperature, oxygen levels, humidity, and mutagens can affect the genes of an organisms that will be expressed thereby affecting its phenotype. Temperature when in its increased state can increase variability in phenotype. Epistasis is present when the allele of a gene hides from another gene.

Answer - B. temperature

Answer:

....

Explanation:

Answer:

The solar wind is a plasma, a stream of charged particles (ions and electrons) that are continuously escaping from the Sun into the interplanetary medium.

Answer:

Light absorption in PSII. When light is absorbed by one of the many pigments in photosystem II, energy is passed inward from pigment to pigment until it reaches the reaction center. ...

Explanation:

Just did this

Answer:

An actual computer virus is a malicious software, often known as malware, that can harm a computer and its users.

Virus hoaxes are false or misleading information about viruses that circulate through various communication channels.

They can be more dangerous than actual viruses due to their ability to spread quickly, cause panic, and undermine effective public health measures.

Virus hoaxes are deceptive messages or claims that often exaggerate the severity or impact of a particular virus. They can be spread through social media, email chains, or word of mouth. These hoaxes may include misinformation about symptoms, transmission methods, or false remedies, leading people to take ineffective or even harmful actions.

What makes virus hoaxes particularly dangerous is their potential to create panic and misinformation at a rapid pace. The viral nature of social media and other communication platforms allows these hoaxes to reach a wide audience within a short period. As a result, people may make decisions based on false information, such as avoiding necessary medical treatment, taking unnecessary precautions, or spreading fear and misinformation to others.

Moreover, virus hoaxes can undermine public health efforts by diverting attention and resources from legitimate preventive measures. They can erode trust in healthcare authorities and disrupt the dissemination of accurate information, making it harder for individuals to make informed decisions and follow recommended guidelines.

This can have severe consequences, especially during outbreaks or pandemics, where timely and accurate information is crucial for public safety. Therefore, it is essential to verify the credibility of information and rely on trusted sources to mitigate the risks associated with virus hoaxes.

Learn more about viruses :

https://brainly.com/question/29156932

#SPJ11

i think it's

1. selective breeding, humans

2. humans

3. a: similar b: different

4. a: crops b:animals c: plants

5. similar, different or animals, plants

(not sure for 5)

lmk if this is correct!

Answer:

mRNA- AUGAAUGCUGCCGGUGA

methionine, asp, ala, ala, gly,

type of mutation- theres deletion which would mean its a missense mutation im p sure

Explanation:

Answer:

In anaphase I of meiosis, the homologous chromosomes separate while in anaphase of mitosis the sister chromatids separate

Explanation:

During meiosis I, the chromosomes are duplicated (i.e., they are bivalents). Moreover, in Anaphase I, the sister chromatids continue attached to each other, while homologous bivalent chromosomes already condensed in prophase I separate.

The spindle fibers are a type of microtubule that helps to separate the genetic material during cell division.  

The microfilaments are structures formed by actin subunits and they form a contractile ring during cytokinesis, or cytoplasm division.

Answer:

mRNA is “messenger” RNA. mRNA is synthesized in the nucleus using the nucleotide sequence of DNA as a template. This process requires nucleotide triphosphates as substrates and is catalyzed by the enzyme RNA polymerase II. The process of making mRNA from DNA is called transcription, and it occurs in the nucleus.

To overcome the limitation of unpredictability in studying tsunamis, the marine scientist can employ the following research methods:

By constructing a scaled-down model of a beach and subjecting it to controlled wave simulations, the scientist can observe and measure the impact of tsunamis on beach erosion. This allows for repeated experiments under controlled conditions, providing valuable insights into the behavior of tsunamis and their effects on coastal areas.

Since tsunamis are challenging to predict, the scientist can shift their focus to studying the effects of typhoons on beach erosion. Typhoons, or tropical cyclones, can generate powerful waves and storm surges that impact coastal regions. By investigating the relationship between typhoons and beach erosion, the scientist can gather relevant data and draw conclusions about the general processes and mechanisms involved in coastal erosion caused by extreme weather events.

To know more about tsunamis

brainly.com/question/31228356

#SPJ11

Answer:MUSCULAR SYSTEM

Explanation:

The hormones may be defined as the chemical messenger of the body and maintains the body homeostasis. The pituitary gland is the master gland of the body.

The atrophy and hypertrophy of the muscular system is regulated by the levels of the growth hormones and testosterone in the body. The muscle atrophy is decrease in the muscle mass that can cause weakness and hypertrophy is increase in the muscular mass due to the variation of the hormones in the body.

Thus, the answer is muscular system

Answer:

Which species?

Explanation:

If you are talking about dinosaurs and their relatives, then there are many theories. One is a flood wiped them out, which is what Christians believe. Scientists also think that a meteor,  volcano eruption, or sudden change of climate could have caused the extinction.

Answer:

Species become endangered for two main reasons: loss of habitat and loss of genetic variation. A loss of habitat can happen naturally. Dinosaurs, for instance, lost their habitat about 65 million years ago. ... Dinosaurs became endangered, then extinct

Explanation:

Hope this will help

Explanation:

New stars are not being created in it

In an experiment about how air pollution can result in acid rain and now you’re wondering how it may affect the plants in your garden the hypothesis is that air pollution affects plant life, Independent Variable is the amount of acid rain, the dependent variable is the rate of plant growth, constants are temperature and humidity, the control group is the growth of another species (e.g. an insect species) and the experimental group are the plant species in the garden.

The dependent variable in an experiment is one that is modified by the independent variable which is the cause of its change, while constant conditions stay the same and the target group is the experimental group.

Therefore, with this data, we can see that the dependent variable and independent variable are mutually related and do not affect the constant conditions.

Learn more about the dependent variable here:

https://brainly.com/question/1670595

#SPJ1

Answer:

D. No symptoms at all

Explanation:

Answer:

The main function of the DNA polymerase is to synthesize DNA by the process of replication.

Explanation:

It is an important process to maintain and transfer genetic information from one generation to another. DNA polymerase works in pairs, replicating two strands of DNA in tandem.

Operations performance objectives trade off against each other as the performance of one objective can be improved by compromising on another.

These trade-offs are mostly due to resource constraints, and thus, they are a significant factor in operations management.

Operations performance objectives refer to the specific outcomes that an operation seeks to achieve. They are the goals of an operation. Organizations use operations performance objectives to create a strategy that addresses the objectives and outlines how to achieve them. Operations performance objectives are split into five categories: Cost: This objective refers to providing a service or product at the lowest possible cost.

Quality: This objective refers to providing a service or product that meets or exceeds customer expectations. Speed: This objective refers to delivering a service or product quickly. Dependability: This objective refers to delivering a service or product as promised. Flexibility: This objective refers to the ability to provide a service or product that meets customer needs. Operations performance objectives trade-offs Operational performance objectives trade-offs refer to the relationship between performance objectives. In operations management, achieving one objective often means sacrificing another. For example, achieving higher quality may mean incurring higher costs, which is a trade-off between quality and cost. In some cases, achieving one objective may enhance another. For instance, a quicker turnaround time (speed) can increase dependability and flexibility. These examples show that trade-offs can be positive or negative. The following are common trade-offs among operational performance objectives: Cost vs. quality: Offering higher quality goods or services will increase costs. Flexibility vs. speed: Being flexible slows down the speed of operations. Speed vs. quality: Higher speed may lead to lower quality. Dependability vs. flexibility: To be dependable, the operations need to be standardized, limiting flexibility.

Learn more about Operations performance here.

https://brainly.com/question/29636818

#SPJ11

4. B. Pine tree is an example of a producer. Therefore, option B is the best one.

5. E. A sort of fuel obtained from modern photosynthesis is solar energy. Therefore, option E is the best one.

6. E. Denitrifying bacteria carry out biological nitrogen fixing. Therefore, option E is the best one.

7. D. A running rabbit is not classified as "detritus." So, option D is the right choice.

8. B. Organism → Organ → Population → Community → Biosphere is the correct sequence of levels of organization in living things.things. As a result, option B is the best one.

4. B. Pine tree is an example of a producer. Producers, also known as autotrophs, are organisms that can produce their own food using energy from the sun or inorganic substances. Pine trees are capable of photosynthesis, where they use sunlight, water, and carbon dioxide to produce glucose, their source of energy.

5. The incorrect statement is E. A sort of fuel obtained from modern photosynthesis is solar electricity. Solar power refers to the energy obtained from the sun, usually through the use of photovoltaic cells or solar panels, to generate electricity. It is not directly derived from present-day photosynthesis, which is the process utilized by plants to convert sunlight into chemical energy in the form of glucose.

6. The incorrect statement is E. Denitrifying bacteria carry out biological nitrogen fixing. Biological Nitrogen fixation is actually carried out by nitrogen-fixing bacteria, not denitrifying bacteria. Nitrogen-fixing bacteria convert atmospheric nitrogen gas (N2) into a form that can be utilized by plants, such as ammonium (NH4+) or nitrate (NO3-).

7. The substance that is NOT classified as "detritus" is D. A running rabbit. Detritus refers to organic matter derived from the decomposition of dead organisms or their waste products. A running rabbit is a living organism and does not fall under the category of detritus.

8. The correct sequence of levels of organization in living things is B. Organism → Organ → Population → Community → Biosphere. This sequence represents the hierarchical organization of living systems, starting from individual organisms, then progressing to organs within an organism, followed by populations of the same species, communities of different species interacting in an area, and finally, the biosphere encompassing all ecosystems on Earth.

The right answer is for (4) option B.  Pine tree ,(5) option E . A sort of fuel obtained from modern photosynthesis is solar energy. (6) Choice E. Denitrifying bacteria carry out biological nitrogen fixing.  (7) option D.  A running rabbit & (8) option B. Organism → Organ → Population → Community → Biosphere .

For more such question on photosynthesis

https://brainly.com/question/19160081
#SPJ8