Answer: D
Explanation: active transport requires energy, diffusion does not need a protein, osmosis is for water
where is the crater from the asteroid that killed the dinosaurs
Answer:
it's Chicxulub crater
Explanation:
good luck hope it helps
antibodies have complementary surface markers that bind to _______________ on foreign microbes.
Antibodies have complementary surface markers that bind to antigens on foreign microbes.
In the immune system, antibodies play a crucial role in identifying and neutralizing potentially harmful foreign substances. These Y-shaped proteins are produced by B cells, a type of white blood cell, in response to an infection or other foreign substance.
The binding of antibodies to antigens occurs due to the specific interactions between their respective structures. The tips of the Y-shaped antibody, known as the variable regions, possess unique complementary surface markers that match the structure of a particular antigen. This allows for a highly specific interaction, much like a lock and key mechanism.
Overall, the binding of antibodies to antigens on foreign microbes plays a vital role in the immune response, ensuring that our body can effectively detect and combat potentially harmful invaders. The specificity of this interaction enables the immune system to target a wide range of pathogens and protect us from numerous infections.
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Several models of atoms are mentioned in this lesson. Plum pudding, planetary and quantum mechanical. Which reason below explains why there are different atom models?
Because atoms have changed their structure over time
Because there are different types of atoms
Because the ideas about the models changed as more discoveries were made about the atom
Because many people came up with models at the same time
Answer:
Because the ideas about the models changed as more discoveries were made about the atom
Explanation:
The structure of the atom was not always known and it took many discoveries to fully figure it out. Through these discoveries, many models were proven invalid; though they still helped in the long run by providing a basic idea on the basis of an atom.
Remember, models are able to change over time, they are merely theories after all; and scientific theories change, unlike laws.
"If a scientist isolates genes for Hepatitus B antigens from a Hepatitus virus, then inserts them into a bacterial plasmid and replicates the bacteria in a fermenter, what product will be collected?"A. Transgenic bacterial plasmidsB. Hepatitus B frusesC. Hepatitus B vaccineD. Hepatitus resistant bacteria
If a scientist isolates genes for Hepatitus B antigens from a Hepatitus virus, then inserts them into a bacterial plasmid and replicates the bacteria in a fermenter, the product collected will be transgenic bacterial plasmids, inside the bacteria, in order to proove if the transgenic plasmid actually gives the bacteria resistance to the virus, it has to be grown in an infected medium.
The correct answer is option A.
What transitions occurs when an ice cube shrinks
Answer:
it changes from solid water to liquid water.
Explanation:
Which pair of structures would provide a positive identification of an animal cell under a microscope?
Answer:
lysosome, flagellum
Explanation:
Took the test & it was correct. See picture below.
DNA methylation may be a significant mode of genetic regulation in eukaryotes. Methylation refers to ________.
Explain how cellular respiration and photosynthesis are opposite processes?
Answer: Cellular Respiration and Photosynthesis are almost opposite processes because photosynthesis removes carbon dioxide from the atmosphere while cellular respiration puts back carbon dioxide. Cellular respiration uses oxygen and has it's waste product of carbon dioxide (CO2).
Why is fuel burning the worst option for a source of energy?
Answer: When fossil fuels are burned, they release large amounts of carbon dioxide, a greenhouse gas, into the air. As a result of greenhouse gases, heat is trapped in our atmosphere, resulting in global warming.
Explanation:
the test for turbidity describes what characteristics of water?
a. odor
b. mineral concentration of the water
c. suspended material in the water
d. metal concentration of the water
The test for turbidity describes what characteristics of water is to determine the mineral concentration of the water so option B is correct.
It's substantially used to measure the attention of suspended material in the water, similar as complexion, ground, plankton, and other organic and inorganic matter. Turbidity is expressed in nephelometric turbidity units( NTU) and is determined by passing a light ray through a sample of water and measuring how important light is scattered.
The advanced the turbidity, the further material is suspended in the water and the lower light that passes through the sample Turbidity doesn't measure essence attention or odor and doesn't indicate mineral attention or the presence of any kind of bacteria.
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A proto-oncogene may not only move next to another gene, but also be transcribed and translated with it as if they are one gene. The double gene product is called a(n)
The double gene product is called oncogene
What is oncogene?Numerous crucial genes that control cell growth and division are present in your cells. Proto-oncogenes are the names given to these genes in their normal state.Many vital genes that control cell division and proliferation are present in your cells. Oncogenes are the mutated versions. Oncogenes can cause cancer by causing uncontrolled cell division.Activation is the process through which a proto-oncogene becomes an oncogene. Numerous genetic processes, such as transduction, insertional mutagenesis, amplification, point mutations, and chromosomal translocations, can activate proto-oncogenes.Learn more about gene here:
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2 Why does Sean Brady feel optimistic about the discovery of this new antibiotic?
(A) because it has already been approved to treat illnesses in humans
(B) because it helped him launch his company, Lodo Therapeutics
(C) because it proved that lab studies are not necessary to develop new antibiotics
(D) because it suggests that more antibiotics are waiting to be discovered
Article : Scientists are studying new ways of finding antibiotics — in dirt
Answer:
D. Because it suggests that more antibiotics are waiting to be discovered
do plant cells have DNA ?
Answer:
Yes
Explanation:
Plant DNA is found in the plant cells nucleus, mitochondria and chloroplasts!
How do new introduced species become established in a new ecosystem
Answer: If it can outcompete native species for resources such as nutrients, light, physical space, water, or food
Explanation:
What kind of pattern is noticed with the structure of DNA?
Answer:
Double helix
Explanation:
that's the biology in humans
Can someone pls help me the answer options are
A 100 joules
B 10,000 joules
C 1,000 joules
D 10 joules
Answer:
I'm pretty sure it's A?
Explanation:
Multiplied by 1%
Somebody help me please
Answer:
they lower the activation energy of reactions
interpreting cladograms which organisms evolved from the common ancestor pakicetus? bats and humans tigers and deer whales and hippos belugas and squids
A cladogram is a diagram that depicts evolutionary connections between various organisms by showing how they diverged from their common ancestor over time. In this context, interpreting cladograms can help determine which organisms evolved from a common ancestor like Pakicetus. The answer to the question, which organisms evolved from the common ancestor Pakicetus, is whales and hippos.The question asks which organisms evolved from the common ancestor Pakicetus.
Cladograms generally indicate how different groups of organisms are related, based on the similarities and differences between them. Pakicetus is an ancestor of cetaceans, which includes whales and dolphins. Based on the evolutionary relationships shown on a cladogram, we can see that the hippos are the closest living relatives of cetaceans. Therefore, we can infer that whales and hippos evolved from the common ancestor Pakicetus. Hence, the correct answer to the question is "whales and hippos."
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Organisms that live in the rainforest have developed unique adaptations that aid in their survival. Which adaptation would most likely be found in organisms living in the rainforest? a. herbivores feed on low-lying plants b. birds have beaks adapted to break open hard shells c. insects have a widely-varied diet d. plants are able to store water in their leaves Please select the best answer from the choices provided A B C D
Answer:
Your answer is most probably A). B) implies that nuts are the only thing for birds to eat in a rainforest, which doesn't make sense, C) implies that the insects would need a widely-varied diet to survive, but again there's an abundance of things that a hungry bug can eat, so they don't need a wide dietary coverage, D) suggests that there may be droughts in the area for which the plant may need to be prepared, but in the RAINforest droughts are uncommon.
Answer:
B) birds have beaks adapted to break open hard shells
Explanation:
got it right on edge :)
PLEASE HELP
"Watermelon snow" in Antarctica is caused by a species of photosynthetic green algae that thrives in subzero temperatures (Chlamydomonas nivalis). These algae are also found in high altitude in year-round snowfields. In both locations, UV light levels tend to be high. The reddish-pink color of these algae is due to the presence of carotenoid pigments, which absorb blue light while reflecting red light. Those pigments protect the chloroplast from ultraviolet radiation, as well as absorbing heat, which provides the algae with liquid water as the snow melts around it. This molecular variation in plants illustrates
A. relative fitness because the molecular adaptations in chlorophyll pigments have passed to the next generation
B. innate variability because plants have evolved molecular differences to an environmental stimuli
C. unselective adaptation because plants have evolved molecular differences to adapt to different wavelengths of light
D. inclusive fitness because differences in chlorophyll pigments increase the proliferation of beneficial traits in the population
The Answer is D
im not sure this is correct answer
which of the following best describes the primary function of typical leaves? a. storage of the sugars produced b.shade c. photosynthesis d.anchoring
The primary function of typical leaves is photosynthesis. Leaves are primarily responsible for capturing sunlight and converting it into energy through the process of photosynthesis.
Photosynthesis is a vital metabolic process in plants, where they use sunlight, water, and carbon dioxide to produce glucose and oxygen. Leaves contain specialized cells called chloroplasts, which contain the pigment chlorophyll. Chlorophyll absorbs sunlight and initiates the chemical reactions necessary for photosynthesis.
Through photosynthesis, leaves convert solar energy into chemical energy stored in the form of glucose. This glucose serves as a source of energy for the plant's growth, development, and reproduction. Additionally, leaves also play a role in transpiration, which is the process of water movement through the plant.
While leaves may have secondary functions like providing shade and anchoring the plant, their primary and essential purpose is to facilitate photosynthesis. This process enables plants to produce their own food and release oxygen, making leaves crucial for the survival and functioning of plants in their natural environment.
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the nurse is caring for a 77-year-old patient diagnosed with crohn's disease. what would be especially important to monitor this patient for?
As a nurse caring for a 77-year-old patient diagnosed with Crohn's disease, it is especially important to monitor for symptoms such as dehydration, abdominal pain, diarrhoea, nutrition, bowel movements, medication and signs of side effects & complication.
Crohn's disease is a chronic inflammatory bowel disease that can affect any part of the gastrointestinal tract. It is important to look after the following:
1. Nutritional status: Crohn's disease can lead to malabsorption, weight loss, and malnutrition. Regularly assess the patient's weight, dietary intake, and signs of nutrient deficiencies.
2. Fluid and electrolyte balance: Diarrhoea, a common symptom of Crohn's disease, can cause dehydration and electrolyte imbalances. Monitor the patient's fluid intake, output, and electrolyte levels.
3. Abdominal pain and bowel movements: Keep track of the patient's abdominal pain, frequency of bowel movements, and any changes in the appearance of stools. This can help identify any worsening of the disease or complications.
4. Medication adherence and side effects: Ensure the patient is taking prescribed medications as directed, and monitor for any potential side effects or drug interactions.
5. Signs of complications: Watch for signs of intestinal obstruction, fistulas, abscesses, or other complications that may require further medical intervention.
Remember to communicate with the patient regularly, providing support and education about Crohn's disease management.
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As a nurse caring for a 77-year-old patient diagnosed with Crohn's disease, it is especially important to monitor for signs and symptoms of complications such as intestinal blockages, perforations, abscesses, and malnutrition. Additionally, it is important to monitor the patient's medication regimen and any potential side effects or interactions, as well as their overall mental and emotional well-being given the chronic nature of the disease. Regular monitoring of the patient's vital signs, weight, and nutritional status is also important in ensuring their health and preventing further complications.
In caring for a 77-year-old patient diagnosed with Crohn's disease, it is especially important for the nurse to monitor for signs of malnutrition, dehydration, electrolyte imbalances, and infection. These factors can have a significant impact on the patient's overall health and well-being, particularly in older individuals who may have weakened immune systems or other age-related health concerns.
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Which of the following are ways that plants help humans? acting as a carbon sinkbioremediationcontrolling erosionabscission
Plants help humans in many ways. The food that we eat, the home that serves as our shelter, the medicine that cure our illnesses, as well as the fuel that is used by our automobiles are all from plants.
From the options provided, the following are ways where plants help humans.
1. Plants act as a carbon sink. They are the one responsible for the absorption of CO2 from the atmosphere in the process of photosynthesis.
2. Plants aid in the absorption of water in the soil to prevent flooding and erosion.
3. Bioremediation is a technology that uses plants in order for humans not to fell the harmful effect of environmental hazards. This process is a way for the cleaning of water resources as well as improvement of the quality of air.
Abscission is the separation of a the part of the plant to its organ.
which part of the eye contains the densest concentration of cone cells?
Answer:
The fovea
Explanation:
The fovea. It is located in the center of the retina and has the highest visual activity. It also has the densest concentration of cone cells, so this answers your question.
Have a nice day!
I hope this is what you are looking for, but if not - comment! I will edit and update my answer accordingly. (ノ^∇^)
- Heather
What was the approximate change in CO2 level from the year 1000 to the year 2000
What is the acronym for CER in science?
PLEASE HELP!!! In 5 or more sentences explain why Humans cut down forests. Consider why and how Humans use forest materials.
Trees are cut down for timber, waiting to be transported and sold. Deforestation is the purposeful clearing of forested land. Throughout history and into modern times, forests have been razed to make space for agriculture and animal grazing, and to obtain wood for fuel, manufacturing, and construction.
An offspring cannot have a trait if neither of its parents have it. Do you agree or disagree with this statement now? What evidence supports your ideas about the statement?
No
An offspring can have traits that neither parents have. People have both dominant and recessive genes that control the traits that they have. So the child would have gotten two recessive genes that the parents carry, to display a trait that the parents don’t display.
It can be carried to you when the chromosomes combine even if the parents don't possess the same trait. It can skip and be dominant for you, so you would be able to see it in your genetic make up.
No, I don't agree with this statement.
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All of the following are true of high-quality protein except
Group of answer choices
it contains all essential amino acids.
it provides 7 kcal/g of energy.
it can support body maintenance.
it can support body growth.
The correct answer is D) it can support body growth. High-quality protein does provide 7 kcal/g of energy and contains all essential amino acids, but it does not provide the energy or nutrients necessary for body growth.
Protein is essential for the growth, maintenance, and repair of body tissues, and it is an important part of a healthy diet. High-quality proteins provide the essential amino acids needed for body growth and development, and they also help to build and repair body tissues.
Protein also provides energy, with approximately 7 kcal/g. Good sources of high-quality protein include lean meats, fish, eggs, dairy products, legumes, nuts, and seeds. Eating a variety of protein sources throughout the day can help to ensure adequate intake of all the essential amino acids.
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which of the following has/have been discovered in research on health protective behaviors?
The following has/have been discovered in research on health protective behaviors is A. an individual tends either to engage in few health protective behaviors or in many of these behaviors.
Health-protective behaviors are actions that people engage in to promote and preserve their health. These behaviors involve adopting and maintaining healthful practices such as physical activity, good nutrition, avoiding smoking, and alcohol consumption among others. An individual's health-protective behaviors are essential because they have a significant influence on their health and well-being.
Studies have discovered that individuals tend either to engage in few health-protective behaviors or in many of these behaviors. Some people choose to do just a few of these actions, while others adopt as many as possible and combine them into a healthy lifestyle. Therefore, it is important for individuals to adopt health-protective behaviors to promote and maintain their health. The combination of many healthy habits creates a more substantial health benefit than any single behavior on its own, the correct answer is A. an individual tends either to engage in few health protective behaviors or in many of these behaviors.
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