A woman gets sick with a bacterial infection and takes an antibiotic to kill the bacteria. A few of the bacteria survived and produced a population of bacteria that was resistant to the antibiotic. Which statement best describes how this happened? A. A species will adapt no matter what the environment B. The environment has no effect on the survival of an organism C. Antibiotics cause mutations in bacteria that are passed on to the next generation D. Only bacteria that already have favorable variations in their DNA survive the antibiotic and reproduce​

Medical research must adhere to ethical guidelines that preserve the health and promote respect for all participants. Children, expectant mothers, and people who are close to death may freely agree to participate in study.

Federal laws permit the IRB to forego getting signed consent if it determines that: The only document tying the subject to the research is the informed consent form; and the main risk is the possibility of harm from a confidentiality violation. Medical research must adhere to ethical guidelines that preserve the health and promote respect for all participants. Children, expectant mothers, and people who are close to death may freely agree to participate in study. People who are confined to institutions could feel compelled to engage in research either they fear getting hurt or because they think they might get unique benefits. Respecting the patient autonomy requires doctors to provide patients with the medical information & treatment options they need to make their own decisions. It also encourages informed consent, honesty, and confidentiality.

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Answer: carbon

Explanation: I just remembered that from last year

Answer:

It is important to use hand sanitizer and wash your hands in a science laboratory, because the chemicals we are exposed to need to be gotten rid of so that we can maintain a healthy and clean environment, and keep each other safe by limiting the spread of our germs... Plus, corona virus.

I'm not sure if this would help but this is what I would say I guess.

Answer:

An autobiography is a true story about someone's life that is written by that person. A biography is a true story about someone's life written by a different person.

Explanation:

homogenous mixture/ solution?

Answer:

Common examples of ascomycota are Cordyceps, morels mushrooms, blue stain tree fungi, ergot, and those associated with lichen that form symbiotic relationships with algae.

Explanation:

Answer:

2 - word

3 - sentence

4- page

5 - chapter

6 - book

Answer:

Nervous tissue is composed of nerves and two types of cells: neurons and glial cells.

Explanation:

Nerves tissues are composed of nerves and two types of cells are neurons and glial cells.

Nervous tissues may be defined as tissues that are found in the brain, spinal cord, and nerves. They are responsible for coordinating and controlling many body activities.

Neurons are the primary type of cells that are associated with the nervous system, while glial cells may be defined as the neurons of the central nervous system which play an important role in the conduction of nerve impulses, but they are non-excitable cells.

Therefore, nerve tissues are composed of nerves and two types of cells are neurons and glial cells.

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Type III survivor-ship curves are usually associated with organisms that have high mortality rates in the early stages of life. It is initially very steep which is reflective of very high morality among young but flattens out those individuals who reach maturity survive for longer time.

The number of individuals in population that can be expected to survive to any specific age. A type III survivorship curves depicts species where few individuals will live to adulthood and die as they get older because the greatest morality only for those individuals is experienced in life,

This type of survivorship curve is drawn as a concave curve on a graph. Tree and marine invertebrates exhibits a type III curve. Type I survivorship curve is most common and has flat curve reflects low juvenile mortality with individual living to old age.

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Small interference RNA molecules (siRNA), prevent gene expression by binding to the product of transcription because b.) They bind to mRNA.

Small interference RNA molecules or siRNA sequences are short nucleotide sequences of RNA that are able to bind messenger RNA in order to block gene expression by a mechanism called the RNA interference pathway or RNAi.

These small interference RNAs or siRNA sequences make use of the base complementary to function in order to repress the translation and or induce the process of mRNA degradation through their association with macromolecular complexes such as the RISC complex.

Therefore, with this data, we can see that small interference RNA molecules or siRNA sequences act by binding for complementary to mRNA sequences in order to repress the process of translation and or by degrading the mRNA that binds to the target region.

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Answer:

they eat meat, they are living oranisims, they need food to survive, they have similar teeth,

Explanation:

Answer:

About 450 million years ago

Answer:

Function of chlorophyll a is to release chemical energy.

Function of chlorophyll b collects the energy in order to pass it to chlorophyll a

Explanation:

Given mass/molar mass = 64

Molar mass of methane = 16

Therefore,

No. of moles of methane = 64/16 = 4.

So, there are 4 moles of methane in 64amu of ch4.

Since, Avogadro's number= 6.022 * 10^23 i.e number of units in one mole of any substance)

We can also write 4* 6.022 * 10^23 molecules of methane [ one mole has weight as molecular weight in gm] .

Since each molecule has 10e, we can also write

10 * 4 * 6.022 *10^23 e in 64 gm of methane.

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Answer:

The ecosystem will fall out of balance.

Explanation:

The ecosystem will fall out of balance because once you remove the top predator, the plant-eaters will grow in numbers, they will eat all of the vegetation, and will either need to adapt or die. Predators are very important, as is everything in the food chain

A membrane potential in which there is no net movement of an ion across a membrane is called an equilibrium potential.

Membrane potential may be defined because the distinct electric ability this is gift outside and inside of a mobileular because of the sodium-potassium pump. A mobileular has a tendency to have extra potassium ions internal it compared to the outside. On the alternative hand, the awareness of sodium ions in a mobileular is stored decrease compared to the outer environment.

Sodium being a negative ion and potassium being a high quality ion creates variations withinside the electric ability outside and inside of a mobileular.

An equilibrium ability is a factor wherein there's no internet motion of ions throughout the membrane due to the fact the electrical pressure is identical outside and inside of a mobileular. The opposing forces are balanced which makes no motion of ions possible.

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The evolution of striping in Chrysotoxum cautum may have occurred through natural selection. One possibility is that the original non-striped insect population had some degree of natural variation in their body coloration. This natural variation could have included a slight pigmentation pattern that was more pronounced in some individuals than in others.

If the environmental conditions where these insects lived changed, this variation in pigmentation could have had an impact on the insects' survival and reproductive success. For example, if the insects lived in an environment where predators were present and striped patterns offered a protective advantage by camouflaging the insects in their surroundings, then those insects with more pronounced striping would be more likely to survive and pass on their genes to the next generation. Over time, this selective pressure would favor the development of striping in the population.

Alternatively, it is possible that the development of stripes in Chrysotoxum cautum could have been a result of sexual selection. Insects with more pronounced stripes may have been more attractive to potential mates, leading to increased mating success and the passing on of genes that promote striping.

It is also worth noting that the evolution of striping in Chrysotoxum cautum may not have been a simple process and could have involved many other factors beyond natural or sexual selection, such as genetic drift, mutation, or other environmental pressures. Ultimately, it is difficult to know exactly how striping evolved in these insects without direct observations or a comprehensive analysis of the genetic and environmental factors involved.

The anatomic makeup of which bone structures make them susceptible locations for osteomyelitis in children are

a). Hip joint

b). Distal femur

c). Proximal humerus

e).Lateral ankle

Osteomyelitis is a type of bone infection that is caused by bacteria. It is a rare but serious condition that can cause severe pain, swelling, and redness in the infected area. It can also lead to bone destruction, joint damage, and limb loss. Osteomyelitis can affect any bone in the body, but it is most commonly found in the long bones of the arms and legs. Treatment usually requires antibiotics and, in some cases, surgery.

Osteomyelitis in children is typically seen in the long bones of the arms and legs, such as the femur and humerus, as well as the distal radius and tibia. The hip joint and lateral ankle are also susceptible locations for osteomyelitis in children.

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Answer:

C

Explanation:

Answer:

A. Chloroplasts and mitochondria replicate in a similar manner as some prokaryotes

Explanation:

Endosymbiont theory deals with how eukaryotic organisms were formed from prokaryotic organisms. Prokaryotes such as Bacteria were documented as the first form of life on earth through fossil records before eukaryotes came into light.

Organelles such as Chloroplasts and mitochondria replicate in a similar manner as some prokaryotes. This supports the endosymbiont theory that present-day eukaryotic cells are descendants of a successful symbiotic relationship between a host cell and an engulfed prokaryote

Annelida are worms whose bodies are divided into similar rings or segments. they are classified into three groups, Polychaeta, Oligochaetes, Hirudine, and Achaea.

Polychaeta is the bigger group in the Annelida, and everyone has equal segments.

Leeches are segmented parasitic predatory worms in the Hirudinea subclass, in the Annelida phylum.

The scallop is a name of various species and does not belong to the Annelida phylum.

The earthworm is a terrestrial invertebrate that belongs to the Annelida Phylum.

Nautilus is from the Mollusca phylum and does not belong to the Annelida.

The subphylum Polychaeta, the leaches, and the earthworm are the ones that match the description of segmented worms

1. An athlete cannot be the best at every sport due to several reasons:

a) Specialization and skill development:

Different sports require specific skills, techniques, and physical attributes. Becoming an elite athlete in a particular sport usually involves years of dedicated training, practice, and honing specific skills related to that sport. It is difficult for an individual to devote the same amount of time, effort, and focus to excel in multiple sports simultaneously.

b) Physical demands and physiological adaptations:

Each sport places unique physical demands on the body. The physiological adaptations required to excel in one sport may differ from those needed for another sport.

For example, the physical attributes and skill sets required for soccer, such as endurance, agility, and kicking technique, may differ significantly from those needed for basketball, which focuses more on vertical jumping, quickness, and shooting accuracy.

c)Different movement patterns and strategies:

Sports have distinct movement patterns, strategies, and game dynamics. Athletes need to develop a deep understanding of these aspects specific to their sport to make quick decisions and execute techniques effectively during competition. Mastering the complexities of one sport already requires significant time and effort, making it challenging to achieve the same level of expertise in multiple sports.

2. In the biological control system described, the effector is the glucose-6-phosphatase enzyme in the liver. The effector is the component of a control system that produces the desired response to bring about the required change.

In this case, when Kaitlyn's blood glucose levels decrease during exercise, the pancreas releases the hormone glucagon into the blood. Glucagon acts on the liver, stimulating the glucose-6-phosphatase enzyme. This enzyme plays a crucial role in the process of glycogenolysis, which involves converting stored glycogen in the liver into glucose. The glucose is then released into the bloodstream, increasing blood glucose levels.

The effector in this biological control system is the glucose-6-phosphatase enzyme because it carries out the specific action necessary to increase blood glucose levels in response to the decrease sensed by the pancreas. By activating this enzyme, the body can release stored glucose from the liver to maintain the required blood glucose levels during exercise.

Overall, the effector is the component of the control system that produces the appropriate response to counteract changes in the regulated variable, which, in this case, is the decrease in blood glucose levels.

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First one is chlorophyll, second one is mitochondria.