dinosaurs (aside from the lineage that produced birds) were extinct by the end of the ______.

Sternocleidomastoid

Explanation:

The group of cells in the hypothalamus that is stimulated by food intake is known as the eating center. The correct option is A) eating.

The hypothalamus is a part of the brain that links the nervous system to the endocrine system through the pituitary gland. The hypothalamus contains various nuclei that regulate a variety of physiological and behavioral processes, including the regulation of appetite and energy expenditure.

There are two types of nuclei present in the hypothalamus; one is the hunger (feeding) center, and the other is the satiety center. Hunger refers to the desire to consume food, while satiety refers to the sensation of being full or satisfied after eating. The hunger center is responsible for stimulating food intake, while the satiety center is responsible for suppressing food intake.

The hypothalamus, which is the area of the brain that regulates eating and drinking, is stimulated when the body requires food. Hormonal changes signal the hypothalamus to increase or decrease appetite, depending on the body's needs. Eating too much or too little can lead to hormonal imbalances, resulting in obesity or anorexia.

To learn more about the hypothalamus here

https://brainly.com/question/32900534

#SPJ11

DNA integrity and replication are very important for cell integrity as well as the organism to which they belong. When we are talking of replication we are referring to the process in which the genome in a cell duplicates, this is for cellular reproduction (mitosis) as well as for the generation of gametes (meiosis), nonetheless in this process tends to happen errors, also known as mutations, said mutations can be neutral or can be detrimental for the organism, hence the importance to maintain genome integrity, for this are the correction mechanisms that the cell possess to correct mutations, such as the case of DNA pol I and DNA pol II.

The basic processes of life include organization, metabolism, responsiveness, movements, and reproduction

DNA replication is considered semiconservative because "each daughter DNA molecule consists of one strand from the parent DNA molecule and one new strand" is the correct answer.

DNA replication is the process of copying DNA to create a new strand of DNA. During DNA replication, the DNA double helix unwinds and separates into two separate strands. Each of these strands serves as a template for the new strand of DNA. A new strand of DNA is built by matching up complementary nucleotides, the building blocks of DNA.

Once the new strand is complete, two identical DNA molecules have been created. Each daughter DNA molecule consists of one strand from the parent DNA molecule and one new strand.

This was first proposed by Watson and Crick in 1953. DNA replication is an essential process for the growth and repair of cells. Without DNA replication, cells would not be able to divide and grow.

Additionally, DNA replication plays a critical role in maintaining the integrity of the genetic material. Errors during DNA replication can lead to mutations that can cause diseases like cancer.

Therefore, DNA replication is considered semiconservative because of the two different types of strands in the newly synthesized DNA.

To know more about DNA replication, refer here:

https://brainly.com/question/16464230#

#SPJ11

Muscle contraction is a complex process that involves the interaction of various proteins and ions within the muscle fibers. The process can be broken down into several steps:

Note: Muscle contraction is a highly regulated and finely tuned process that allows our muscles to perform a wide range of functions, from simple movements to complex tasks such as lifting heavy weights or running a marathon.

Learn more about muscle contraction on

https://brainly.com/question/14907458

#SPJ1

Answer:

it has to be human values unless if the question is emphasizing on something materialistic

Answer:Lock; Key

Explanation:

An enzyme's active site is to a specific substrate as a  lock is to a key.

Enzymes are the biocatalysts which increase the rate of biochemical reaction, the activity of enzyme is depend on different factors such as pH-specific, it catalyze the reaction both in forward and reverse reaction.

An enzyme have active site which bind to substrate by lock and key mechanism, other factors influence the enzyme activity such as heat, temperature and varying pH.

Enzyme shows relative,  stereo-specificities and regulatory function and Physical properties  of enzyme include its colloidal property, it gets inactivated below boiling point of water, these are thermolabile.

Learn more about enzyme, here:

https://brainly.com/question/1419573

#SPJ2

Answer:

Our results contrast with research conducted in protected areas that suggested human effects in the food web are primarily predator-mediated. Instead, human influence on vegetation may strengthen bottom-up predominance and weaken top-down trophic cascades in ecosystems.

Explanation:

Humans affect the different trophic levels in ecosystems on Earth through destroying it via activities such as habitat destruction, pollution etc.

This refers to all the organisms and the physical environment with which they interact.

Humans have destroyed most of the trophic level through predator mediated activities but however have increased the producers through agricultural processes.

Read more about Ecosystem here https://brainly.com/question/842527

The phenotypic ratio that Mendel would be expected if he crossed the F1 with the original purple parents is all purple progeny (4:0) because it involves the cross of a parental line that is homozygous dominant for a given trait.

A homozygous dominant trait refers to any trait controlled by one or more genes that display the dominant allele for the loci involved, which is found in both homologous chromosomes for each one of these loci.

In this case, the parental purple is dominant homozygous and thereby the next generation always will receive a dominant allele for the trait.

Therefore, with this data, we can see that a homozygous dominant trait only can generate dominant progeny in the first generation since this  cross with both heterozygous and recessive homozygous plant lines to produce only a type of phenotype in offspring.

Learn more about a homozygous dominant trait here:

https://brainly.com/question/14423211

#SPJ1

Because the items comprising is descended from a progeria patient and also has DNA damage from of the mutation, it has more malformed nuclei than the both father and mother did.

The word "nucleus" (plural: "nuclei") in Latin refers to a fruit seed. Nucleus of an atom, a incredibly dense center portion of an atom, is the most frequent reference. A eukaryotic cell's cell nucleus is its core organelle and houses the majority of a cell's DNA.

Accessible software called Nuclei offers quick and adaptable security checks based on straightforward YAML and DSL. In order to just provide speedy and extensive vulnerability assessment, Nuclei accepted or rejected across targets using template that may scan protocols like TCP, SSH, DNS, HTTP, SSL, and many others.

To know more about Nuclei visit:

https://brainly.com/question/21086171

#SPJ4

Microorganisms so tiny they couldn't be seen under a microscope were found by Dmitri Ivanovski. These creatures are known as viruses.

A piece of nucleic acid that has been protein-coated is what makes a virus an infectious microbe. A virus cannot reproduce on its own; instead, it must infect cells in order to use the components of the host cell to create copies of itself.

A virus's main objective is to transfer its genome to the host cell so that it can be expressed by the host cell. A fully developed infectious virus is known as a virion.

However, viruses and cell-based life have several striking similarities. For instance, they have nucleic acid genomes and share your cells' genetic code. Like cell-based life, viruses can evolve and have a range of genetic variants. Viruses, therefore, seem to be in a "questionable" area even if they do not fit the criteria of life.

To learn more about viruses, refer:-

https://brainly.com/question/29312545

#SPJ4

Alkali denaturation refers to the process of using alkaline conditions to denature double-stranded DNA. In this method, DNA is treated with a strong alkaline solution, such as sodium hydroxide (NaOH), to break the hydrogen bonds between the two strands of DNA, resulting in single-stranded DNA.

The organic method is a common approach used to purify DNA from biological samples. The general steps involved in the organic method are as follows:

Cell lysis: The biological sample is treated with a lysis buffer to break open the cells and release the DNA.

Protein removal: Proteins are denatured and removed from the DNA using organic solvents such as phenol and chloroform. These solvents separate the DNA from proteins, lipids, and other contaminants.

Precipitation: DNA is precipitated by adding a cold alcohol, typically ethanol or isopropanol. The DNA forms a visible pellet that can be collected by centrifugation.

Washing: The DNA pellet is washed with ethanol to remove residual contaminants

Re-suspension: The purified DNA pellet is dissolved in a suitable buffer, such as TE buffer or distilled water, to make it ready for downstream applications.

Alkali denaturation is often used in DNA sequencing, PCR, and hybridization techniques where single-stranded DNA is required as a starting material.

For more such questions on denaturation

https://brainly.com/question/21990137

#SPJ8

The systemic disease caused by infection of microorganisms and their toxins in the circulating blood is called sepsis.

A systemic disease is a disease that affects the whole body, not just one part or organ. The immune system, which defends the body against foreign invaders like viruses and bacteria, can become hyperactive in these diseases and harm healthy tissue instead.

They can also spread through the body's circulation, affecting multiple organ systems at once. Sepsis is an example of a systemic illness. The movement of blood through the circulatory system of the body is known as circulating blood.

The heart pumps blood through the circulatory system's blood vessels, which transport oxygen and nutrients to all of the body's tissues while removing waste products. Blood is also important in transporting immune cells and proteins throughout the body, defending against infections, and maintaining homeostasis.

learn more sepsis : https://brainly.com/question/5574337

#SPJ11

The statement "As the stomach contents enter the duodenum, their low pH stimulates endocrine cells in the lining of the duodenum to secrete the hormone secretin. In response, secretin stimulates the pancreas to release bicarbonate ions into ducts leading to the duodenum" is an example of a negative feedback loop.

A feedback loop is a process in which the product or output of a procedure affects the input or method's response. It happens when a change in one aspect of the system causes a reaction that causes adjustments in a different component of the system, resulting in a chain reaction that can continue until the system reaches a steady state.

A negative feedback loop is one in which a change in a variable results in a response that counters or opposes the original modification. As the name implies, negative feedback aims to reduce changes in the internal and external environment to maintain equilibrium. For example, the human body uses negative feedback loops to maintain a constant body temperature.

A low pH is caused by the stomach contents entering the duodenum, which stimulates endocrine cells in the duodenum lining to secrete the hormone secretin. This hormone causes the pancreas to release bicarbonate ions into ducts leading to the duodenum, as stated in the statement. The bicarbonate ions inactivate the acidic content of the stomach, making the pH of the duodenum rise and reach a neutral level. As a result, the secretion of secretin is decreased, and the body's pH level is maintained in the correct range.

Learn more about feedback loop: https://brainly.com/question/29189523

#SPJ11

Answer:

after nutrients are absorbed during digestion,the excretory system removes faeces through the rectum. these work together to maintain oxygen homeostasis.

On the presence of a large central vacuole, a nucleus, a cell wall, and mitochondria, the cell you were looking at is most likely a eukaryotic plant cell. Option C is correct.

Eukaryotic cells are more complex and larger than prokaryotic cells, which lack a nucleus and most organelles. Eukaryotic cells are found in animals, plants, fungi, and protists.

However, Eukaryotic cells have a nucleus, membrane-bound organelles such as mitochondria, and a cytoskeleton. Plant cells, in addition to these organelles, also have a cell wall, a large central vacuole, and chloroplasts for photosynthesis. The presence of a large central vacuole, a cell wall, and mitochondria in the cell you observed suggest that it is a plant cell.

Hence, C. is the correct option.

To know more about Eukaryotic cells here

https://brainly.com/question/7153285

#SPJ1

--The given question is incomplete, the complete question is

"You were looking at a cell under a microscope. It had a large central vacuole, a nucleus, a cell wall and mitochondria. You concluded that it is a: Responses A) Eukaryotic animal cell B) Hybrid of a plant and animal cell C) Eukaryotic plant cell D) Prokaryotic bacterial cell."--

Answer:

The organic matter is all natural came from the earth. But on the other hand, inorganic fertilizer is not natural it is chemical to make the grass more rich and healthy and they already stored all the nutrients in the fertilizer so it can work. I hope I helped

Answer:

Check explanation

Explanation:

Cons- The most visible impacts of plastic debris are the ingestion, suffocation and entanglement of hundreds of marine species. Marine wildlife such as seabirds, whales, fish and turtles mistake plastic waste for prey; most then die of starvation as their stomachs become filled with plastic.

Pros- Researchers are concerned that this proliferation of plastic may be giving striders, microbes, animals and plants that grow directly on the plastic an advantage over oceanic animals that are not associated with hard surfaces, such as fish, squid, tiny crustaceans and jellyfish.

Answer:

The answer is C

Scientists conducted experiments on mice while keeping one half in bright light and another half in dim light to know how the sunlight affects mice.

What is the name of the experiment?

It is an open-field experiment developed by Calvin .S.Hall used to assay locomotor activity levels, anxiety, and willingness to explore in animals.

Here in this experiment both age groups of rats were tested in the same locomotor boxes where at another side they had immersed incandescent lamps. It is used to assess memory by evaluating the ability of the animal to recognize a stimulus.

When scientists exposed the mice from darkness to light which was more to handle, they found out that mice became sluggish and unable to function. Mice's neuronal activity patterns shifted and the cells in the pacemaker region of the brain pulse irregularly.

Mice are nocturnal creatures, so they are most active between dusk and dawn. They don't like bright lights because they have a poor vision either in dark or light.

Hence the above experiment concludes that mice cannot see well in the dark or in the light. If they get exposed to light then they will become sluggish.

Learn more about experiments on mice from the link given below:

https://brainly.com/question/28469085?utm_source=android&utm_medium=share&utm_campaign=question

#SPJ4

The study in a Pennsylvania forest reveal about the environmental effects of using DDT reveals that a large number of ladybird were killed due to DDT which caused rise in the population of aphids.

DDT is a chemical that was used for killing the insects and keeping the crops safe and productive. It was later found that it has a worse effect on the lives of other non target organisms like other insects, bird and human as well.

It is also known to be associated with the phenomenon of biomagnification. It is a process of accumulation of harmful chemicals with increase in the trophic level which occurs due to continuous intake of food contaminated with chemicals that is not tolerable and causes serious implication.

To learn more about DDT here

https://brainly.com/question/1657474

#SPJ4

The timing of this long bone fracture is Postmortem. The correct option is c.

A particular kind of bone fracture known as a postmortem fracture happens after a person has passed away. This kind of fracture can happen for a number of reasons, including the body's weight or the pressure used when moving or handling the remains.

Postmortem fractures are distinct from antemortem fractures, which happen before the person passes away and perimortem fractures, which happen shortly before passing away.

Postmortem fractures can show signs of bone weathering such as staining or discoloration, as well as clean breaks with little to no displacement. The cause of death cannot be determined by forensic investigations using these fractures because they are not thought to be the result of trauma. The correct option is c.

Learn more about long bone fracture at:

brainly.com/question/31958348

#SPJ4

Answer:

C - Loud Noises

Explanation:

Please mark as Brainliest

A larger brain provided early hominins with enhanced cognitive abilities, improving problem-solving, memory, learning, and language skills.

Having a larger brain enabled early hominins to develop complex social structures, engage in advanced tool-making, and navigate their environment more effectively. The increased cognitive abilities facilitated problem-solving skills, allowing for the development of innovative strategies to obtain food, protect themselves, and adapt to changing environments. The improved memory capacity would have aided in learning and passing down knowledge from one generation to the next.

Additionally, language skills likely played a crucial role in communication and cooperation within social groups, enabling collective decision-making, enhanced hunting techniques, and the transmission of cultural practices. Overall, a larger brain provided early hominins with a competitive advantage in their ecological niche by enabling higher cognitive functioning.

To learn more about brain follow the link:

https://brainly.com/question/29407892

#SPJ4

The most frequently recommended family of drugs for the treatment of acid-related illnesses like heartburn and indigestion is called proton pump inhibitors (PPIs). They function by obstructing the parietal cell of the stomach's acid producing site.

Proton pump inhibitors (PPIs) are medications that reduce the amount of stomach acid produced by glands in the stomach lining.

Proton pump inhibitors have the following uses:

Learn more about the proton pump inhibitor with the help of the given link:

https://brainly.com/question/28273015

#SPJ4

The correct answer is A - there is a direct relationship between atmospheric carbon dioxide and Antarctic temperature. Based on the data collected by scientists since the 1960s, it is clear that as the amount of atmospheric carbon dioxide increases, so does the temperature in Antarctica.

This relationship is due to the greenhouse effect, where carbon dioxide and other greenhouse gases trap heat in the Earth's atmosphere, leading to an increase in temperature. The opposite is also true - if the amount of atmospheric carbon dioxide were to decrease, then the temperature in Antarctica would also decrease.

This data highlights the urgent need to address the issue of climate change and reduce our carbon emissions to prevent further warming of our planet.

For more questions on: atmospheric carbon dioxide

https://brainly.com/question/30940490

#SPJ11

Amino acids found in the amino acid pool A. can be used for protein synthesis

The amino acid pool refers to the collection of amino acids available within an organism's cells and tissues. These amino acids can be derived from various sources, including dietary protein intake and the breakdown of cellular proteins. The amino acids in the amino acid pool can be utilized for a variety of cellular processes, including protein synthesis.

Option B is incorrect because the amino acid pool does not directly synthesize essential amino acids. Essential amino acids are those that cannot be synthesized by the body and must be obtained through the diet.

Option C is also incorrect because the amino acids in the amino acid pool can come from both plant and animal sources. While animal products tend to be good sources of complete proteins containing all essential amino acids, plant-based sources can also provide individual amino acids that can contribute to the amino acid pool.

Option D is incorrect because the amino acid pool does not require protein supplements to maintain its resources. The body can recycle amino acids from protein breakdown and utilize them as needed. While protein supplements can be used to supplement protein intake, they are not essential for maintaining the amino acid pool.

So, option A is the correct answer.

To know more about amino acids click on below link :

https://brainly.com/question/33451002#

#SPJ11

Understanding gas and vapours in a work setting is incredibly important for workplace safety. Gas and vapours can contain noxious substances that, if exposed to, can lead to serious injury or health implications.

In order to prevent such accidents, employers must perform risk assessments in order to assess and identify any areas of risk and put in place control measures to limit them. If gas and vapours are used onsite, then suitable ventilation and extraction systems should be in place.

Employers should also ensure that their staff are aware of the potential risks associated with such substances and provide adequate training and instruction in how to work safely. Finally, employers should also check that any necessary personal protective equipment is provided and communications are in place to be able to notify relevant emergancy responders in case of an accident.

know more about vapours here

https://brainly.com/question/29640317#

#SPJ11

All living things require an outside source of materials and energy. The sum total of all chemical reactions that occur within a cell to provide these materials and energy is called metabolism.

Energy is the ability to perform work.  In an organism's body energy is required to perform each and every processes inside the body. In eukaryotic organisms this energy is derived by the mitochondria. In humans and various other species, the major source of energy is ATP.

Metabolism is the sum total of all the reactions taking place inside the body. These reactions can be anabolic or catabolic. The anabolic reaction involve the formation of larger molecules from the smaller ones. The catabolic reactions involve the breakdown of larger molecules into smaller ones.

To know more about metabolism, here

brainly.com/question/4707439

#SPJ4