Growth factors are local regulators that ________. A. are modified fatty acids that stimulate bone and cartilage growth B. are found on the surface of cancer cells and stimulate abnormal cell division C. bind to cell-surface receptors and stimulate growth and development of target cells
D. convey messages between nerve cells
Answers
Growth factors are cell-surface receptor-binding proteins that encourage the growth and development of target cells.
What is Growth Factor ?A growth factor is a naturally occurring chemical that promotes cell proliferation, wound healing, and, on rare occasions, cellular differentiation. It is usually a secreted protein or a steroid hormone. Growth factors play a crucial role in the regulation of many cellular processes.
A growth factor is a protein that stimulates the growth of specific tissues. Growth factors are found in a wide variety of animals, including insects, amphibians, humans, and plants, and they serve a crucial role in encouraging cellular differentiation and cell division.Growth factors are commonly used as a signaling molecule between cells. Cytokines and hormones, for example, attach to specific receptors on the surface of their target cells. As a result, the correct answer is proteins that bind to surface receptors and excite target cells.Growth factors are local regulators that - bind to cell-surface receptors and stimulate growth and development of target cells.
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Related Questions
explain how the population of octopuses and seaweed in this ecosystem might be affected if a disease reduced the crab population
Answers
Answer:
Seaweed might start to grow out of control withough crabs eating it, octopuses on the other hand would struggle to find food and start to die off because they relie on crabs to be their food source.
Without crabs to consume it, seaweed would start to grow out of control; octopuses, on the other hand, might struggle to find food and begin to disappear because they depend on crabs as a food supply.
What is the role of seaweed and octopus in ecosystem?
Seaweeds are important components of marine ecosystems. They serve as the primary source of nutrients and energy for marine organisms.
Either directly when fronds are consumed or indirectly when decomposing sections break down into small particles that are ingested by filter-feeding species.
No other creature has a predatory function as significant as that played by octopuses in forming communities.
Therefore, the population of octopuses and seaweed in this ecosystem might be affected if a disease reduced the crab population.
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Match the adult structure on the left with the aortic arch or other arterial structure on the right. internal carotid arteries ligamentum arteriosus common carotid arteries stapedal arteries aortic arch pulmonary artery maxillary arteries A. proximal part of third aortic arch B. first aortic arch C. left fourth aortic arch D. distal part of left sixth aortic arch E. proximal part of right six aortic arch F. third aortic arch and dorsal aorta G.second aortic arch
Answers
The aortic arc, also known as the aortic arch, is a curved portion of the aorta, the largest artery in the body. It is located between the ascending and descending aorta and is responsible for supplying oxygenated blood to various parts of the body, including the head, neck, and upper limbs.
The aortic arc contains important branches such as the brachiocephalic trunk, left common carotid artery, and left subclavian artery, which further divide to supply blood to specific regions. The aortic arc plays a crucial role in the circulatory system by distributing oxygen-rich blood to vital organs and tissues.
Please note that the pulmonary artery does not correspond to any of the provided options.
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What is Alligator/ploverbirds relationship
Answers
Answer:
The ploverbird and alligator have a symbiotic relationship.
Explanation:
The ploverbird cleans the alligators teeth in order to eat and the alligator gets a dental checkup so they both benefit from the relationship.
Which are the best solutions for reducing the mine production of copper and conserving copper ore? Select the two correct answers. (1 point)
Recycle electronic waste.
Make electrical appliances without wires.
Use glass as a substitute.
Use aluminum as a substitute.
Stop buying electrical appliances.
Answers
Answer:use aluminum as a substitute and recycle electronic waste
Explanation:
Recycling electric waste and using aluminum as a substitute are the two best solutions. Aluminium is a material that can be used to replace copper and thus reduce copper mine production.
What is Aluminium?Aluminium is a chemical element with the atomic number 13 and the symbol Al. Aluminium has a lower density than other common metals, about one-third that of steel. When exposed to air, it forms a protective layer of oxide on the surface due to its high affinity for oxygen. Aluminium is a silvery-white metal that is lightweight. It is pliable and malleable. Uses. Aluminium is used in a wide range of products such as cans, foils, kitchen utensils, window frames, beer kegs, and aircraft parts. This is due to its unique properties. Aluminium is made by melting alumina, which is refined from bauxite ore.To learn more about Aluminium, refer to:
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UNITS
O
R
G
A
N
1
S
M
3
KEY to rock units
Sandstone
Shale
KEY to fossils
A Starfish
P
Limestone
Dolomite
for coo
Foraminnteran
Coral
Brachiopod
Diplomys
Ammonite 4
Caturus
Spenooters
Lycopod
Crnoid
Reachepod
Tragbite
Tribrachidum
1) Using the letters printed on the left, what is the
order of the rock layers from youngest to oldest?
2) What is the youngest fossil? How do you know?
3) What is the oldest fossil? How do you know?
Answers
1. O would be the youngest layer, while M would be the oldest layer.
2. The Foreminniferan would be the youngest fossil since it's closest to the top.
3. The oldest fossil would be the Tribachdium. It's the one closest to the bottom.
according to some scientists, patterns of evolution can be illustrated by using diagrams like the one below. which statement best explains the patterns seen in this diagram?
Answers
According to some scientists, the patterns of evolution illustrated by this diagram show how different species evolve from a common ancestor over time.
The diagram shows how different species can split off from a single species and develop unique traits and characteristics. The diagram also shows how certain species can become extinct due to environmental changes or other factors.
Evolution is the process of change over time. It is the process by which different species develop from a common ancestor. Evolution occurs due to various factors, such as environmental changes, competition for resources, and genetic mutations.
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Match each term with its definition.TERMS: osmosis | hypertonic | hypotonic | symbiotic | fungus | mycorrhizaeDEFINITIONS:a. solution with a greater concentration of dissolved substancesb. a solution with fewer dissolved substancesc. both organisms benefit from their interaction with each otherd. decomposers that break down dead organisms within the soil and recover their nutrientse. roots together with the fungif. the process in which water moves through a permeable membrane
Answers
Osmosis is the name of a process involving a semipermeable membrane and the passage of water through it. Therefore, the correct definition is f. the process in which water moves through a permeable membrane.
Hypertonic is the name of a solution with higher concentration than another one. Therefore, the correct definition is a. solution with a greater concentration of dissolved substances.
Hypotonic is the name of a solution with lower concentration than another one. Therefore, the correct definition is b. a solution with fewer dissolved substances.
Symbiotic is a way in which organisms from different species can relate to each other. They'll always benefit from this relationship. Therefore, the correct definition is c. both organisms benefit from their interaction with each other.
Fungus is an organism that is responsible for decomposition. Therefore, the correct definition is d. decomposers that break down dead organisms within the soil and recover their nutrients.
Mycorrhizae relates to a symbiotic association between a green plant and fungus. Therefore, the correct definition is e. roots together with the fungi.
Are Africanized honey bees a direct or indirect threat?
Answers
Africanized honey bees are Indirect threat.
Honey bees can thrive in herbal or domesticated environments, although they choose to stay in gardens, woodlands, orchards, meadows and different regions where flowering plant life are considerable. Inside their natural habitat, honey bees construct nests inside tree cavities and underneath edges of items to cover themselves from predators.
Bees feed on nectar and pollen amassed by means of foragers — older worker bees with beefy flight muscle tissues. Some foragers gather nectar, which they store in an elastic pouch in the gut called a “honey belly”; others gather pollen grains, packing them in “baskets” on their rear legs.
Queen honey bees stay on average 1–2 years whereas employees stay on average 15–38 days within the summer and one hundred fifty–two hundred days in the iciness.
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albinism in humans can be caused by recessive mutations in different genes that cause a total lack of melanin pigment. a complementation test would be available when two people with albinism mate to produce offspring. if the two people carry mutations in different genes that each cause albinism, what frequency would albinism occur in their children? group of answer choices 100% 25% 0% 50%
Answers
The correct answer is option b. The frequency of albinism that would occur in their children is 25%.
Albinism is an inherited condition in which an individual's melanin pigment production is reduced or absent. This can be caused by a variety of mutations in different genes, which may affect different aspects of melanin pigment synthesis. In the case of recessive mutations, individuals who inherit two copies of the mutated gene (one from each parent) will exhibit symptoms of albinism.
Complementation testing is a type of genetic analysis that can be used to determine whether two mutations are in the same or different genes. If two individuals with albinism carry mutations in different genes that cause the same phenotype, they can mate to produce offspring that will inherit one copy of each mutated gene.
If the mutations are in different genes, then the offspring will have at least one functional copy of each gene, and they will not exhibit the symptoms of albinism. However, if the mutations are in the same gene, then the offspring will inherit two copies of the mutated gene, and they will exhibit the symptoms of albinism. This type of analysis can be used to determine whether different cases of albinism are caused by mutations in the same or different genes.
If two individuals with albinism carry mutations in different genes that cause albinism, then the frequency of albinism in their children would be 25%. This is because each parent would contribute one mutated gene and one normal gene to their offspring, resulting in a heterozygous genotype for albinism.
This genotype would not exhibit the symptoms of albinism, but their offspring would have a 25% chance of inheriting two copies of the mutated gene and exhibiting symptoms of albinism.
Therefore, the frequency of albinism in the offspring of two individuals with albinism who carry mutations in different genes would be 25%.
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Fill-in-the-blanks: Blood fow into the ___________________ (pulmonary circuit/systemic circuit) would _____________ (increase/decrease) if the left side of the heart fails. Blood fow into the ____________ (pulmonary circuit/systemic circuit) would _________________ (increase/decrease) if the right side of the heart fails
Answers
Blood flow into the pulmonary circuit would decrease if the left side of the heart fails. Blood flow into the systemic circuit would decrease if the right side of the heart fails.
The systemic circuit and the pulmonary circuit are two parts of the circulatory system. The systemic circuit is a part of the circulatory system that transports blood from the heart to the body tissues and back to the heart.The pulmonary circuit is a part of the circulatory system that transports blood from the heart to the lungs and back to the heart. In the pulmonary circuit, the blood is pumped from the right ventricle of the heart to the lungs, where it is oxygenated, and then returned to the left atrium of the heart.Therefore, blood flow into the pulmonary circuit would decrease if the left side of the heart fails. Blood flow into the systemic circuit would decrease if the right side of the heart fails.
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What structure in the hypothalamus receives information about light from the retina and routes it to structures of the brain that regulate biological rhythms?.
Answers
Suprachiasmatic nucleus (SCN) receives information about light from the retina and routes it to structures of the brain that control biological rhythms.
The suprachiasmatic nucleus (SCN) is a cluster of hundreds of cells within the hypothalamus that receives information about light exposure directly from the eyes and controls your behavioral rhythm.
The suprachiasmatic nucleus (SCN) is a bilateral structure in the hypothalamus's anterior region. It is the principal pacemaker of the circadian timing system, regulating the majority of the body's circadian cycles. The SCN is served by a number of afferent neural pathways. The retinohypothalamic tract, which originates from photosensitive ganglion cells in the retina, is its main tract. Efferent projections from the suprachiasmatic nucleus innervate tissues such as the pineal gland, which produces melatonin to induce sleep throughout the night.
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Who is the criminal on the whodunnit work sheet for science?
Answers
Answer:
The Killer's Identity
The season finale revealed the killer to be Cris all along. She "tanked Sheri, flamed Dontae out, blew Adrianna up, got Don mauled, let Ulysses bite the dust, drained Sasha and Dana, induced Geno's headache, blasted Ronnie, choked Melina and finally silenced Lindsey for good".
Explanation:
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Which of the following best describes a benefit of non-renewable energy use?
A) Scientific advances now allow us to synthesize fossil fuels making them renewable
B) Ecosystems will be healthier as dangerous chemicals in fossil fuels are extracted for use as energy
C) Removing these energy sources will stabilize the abiotic factors in the ecosystem making them more resilient to change
D) The infrastructure to distribute this energy is already in place, therefore less surrounding environments need to be disturbed
Answers
Answer:
No d is the right answer
Explanation:
the infrastructure to distribute this energy is already in place ,therefore less surrounding environment need to be disturbed.
Bio 9th help pls! 10 points!
Answers
Answer:
4th answer
not the first since the sugar have 5 sides not sox
not the second or third since the whole nucleic acid contain C H O N P
the N comes from the nitrogen base
and the P comes from the phosphate group
Pepsin and Trypsin are enzymes. At what pH do they have the highest rate of reaction?
Answers
Answer:
It has an optimum pH of about 1.5. Trypsin's optimum pH is about 8.
Explanation:
This active trypsin acts with the other two principal digestive proteinases — pepsin and chymotrypsin — to break down dietary protein into peptides and amino acids. These amino acids are essential for muscle growth, hormone production and other important bodily functions.
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Depending on the type of cell injured by radiation, the biologic effects of radiation can be classified as _________ or ______
Answers
Depending on the type of cell injured by radiation, the biological effects of radiation can be classified as radiation or exposure.
The main health risks from radiation exposure include cancer and genetic damage. Compared to a genetic effect, cancer would be around five times more likely. Chromosome alterations, stillbirths, congenital disorders, and infant and young child mortality are examples of genetic consequences.
The dosage, or the amount of energy physically deposited in your body, is the most crucial element. The extent of the biological harm increases as cells absorb more energy. Radiation dose is the term used by health physicists to describe the quantity of energy received by the body.
Atoms in a DNA molecule can directly interact with ionizing radiation. Cells are unable to reproduce as a result. Direct action can harm vital cellular systems as well. It may occasionally even cause cancer.
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Which of the following is a characteristic of attention deficit/hyperactivity disorder (AD/HD)?
1. has difficulty waiting for his or her turn
2. lacks facial expression
3. is unusually sensitive to light, sound, and touch
4. performs repetitive movements, such as spinning, rocking, or hand-flapping
Answers
Answer:
its the first one
Explanation: i have adhd lol
Answer:
it's answer number one owo
Explanation:
during an ige-mediated hypersensitivity reaction, which leukocyte is activated? group of answer choices neutrophils monocytes eosinophils t lymphocytes
Answers
During an IgE-mediated hypersensitivity reaction, eosinophils are primarily activated.
IgE-mediated hypersensitivity reactions, also known as Type I hypersensitivity reactions, involve the activation of various immune cells. In these reactions, the initial exposure to an allergen triggers the production of specific IgE antibodies by plasma cells. These IgE antibodies bind to Fc receptors on the surface of mast cells and basophils, sensitizing them.
Upon subsequent exposure to the same allergen, cross-linking of the IgE antibodies occurs, leading to the degranulation of mast cells and basophils. This degranulation releases numerous inflammatory mediators, such as histamine, leukotrienes, and cytokines, which contribute to the characteristic symptoms of the allergic reaction.
Among the leukocytes involved in the response, eosinophils play a crucial role. Eosinophils are attracted to the site of the allergic reaction by the released chemotactic factors. Once recruited, eosinophils release their own inflammatory mediators, such as major basic protein, eosinophil cationic protein, and eosinophil-derived neurotoxin.
These mediators are particularly effective against parasitic infections and contribute to the prolonged inflammation seen in chronic allergic conditions like asthma and allergic rhinitis.
In contrast, neutrophils, monocytes, and T lymphocytes are not the primary cells activated in IgE-mediated hypersensitivity reactions. Neutrophils are typically involved in acute bacterial infections, while monocytes play a role in phagocytosis and antigen presentation.
T lymphocytes are more prominent in delayed hypersensitivity reactions mediated by T cells, such as Type IV hypersensitivity reactions.
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Think about how part of the organism body’s is designed to do a specific job well
Answers
One part of an organism is designed to to a specific job well because of its function. For example, the heart is good at pumping blood because it has veins, arteries, and valves to assist it.
What are the functions of blood?Blood brings oxygen and nutrients to all the parts of the body so they can keep working. Blood carries carbon dioxide and other waste materials to the lungs, kidneys, and digestive system to be removed from the body.
This important substance has many different elements that make it the main carrier of oxygen, carbon dioxide, and essential nutrients throughout the body. There are four parts of blood: platelets, plasma, and red and white blood cells.
Blood has three main functions: transport, protection and regulation. Blood transports the following substances: Gases, namely oxygen (O2) and carbon dioxide (CO2), between the lungs and rest of the body.
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Which of the following are mainly cycled through the processes of photosynthesis and cellular respiration?
A carbon and sulfur
B carbon and oxygen
C nitrogen and sulfur
D nitrogen and oxygen
Answers
Answer:
carbon
Explanation:
carbon and nitrogen
in a cross between aabbccddee and aabbccddee, what fraction of the offspring will be phenotypically dominant for all alleles? express your answer as a fraction.
Answers
If aabbccddee is crossed with another aabbccddee, the proportion of the offspring that would be phenotypically dominant would be zero.
Alleles in dominant forms are usually expressed in capital letters while those in recessive forms are expressed in small letters.
Thus, aabbccddee genotype is about traits that are all recessive. In other words, there are no dominant traits among the traits represented by the genotype.
The implication is that no offspring from the cross of aabbccddee and aabbccddee will express any trait that is dominant or different from those of the parents.
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Due to climate change, places that used to be colder are now warming up, allowing new invasive species to establish themselves. What is one way that warming conditions are beneficial to invasive species?
a) acid rain, tree roots, waves
b) acid rain, plants, ice
c) glaciers, waves, wind
d) moving water, plants, wind
Answers
One way that warming conditions are beneficial to invasive species is moving water, plants, wind. The correct answer is D.
One way that warming conditions are beneficial to invasive species is by providing them with longer growing seasons and warmer temperatures that allow them to reproduce more quickly and spread their range.
Warmer temperatures also allow some invasive species to survive in areas where they previously could not due to cold temperatures, and they may outcompete native species that are not as well adapted to the changing climate.
Additionally, warming conditions can lead to changes in the timing of key ecological events such as flowering or migration, which can disrupt the natural interactions between species and provide opportunities for invasive species to gain a foothold.
Invasive species can also benefit from disturbances such as droughts, floods, or fires that are becoming more frequent and severe due to climate change, which can create opportunities for them to colonize new areas or outcompete weakened native species.
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recognizing a smell as the familiar fragrance of red roses is an example of ___.
Answers
Answer:
Explanation:
Transduction
Which of the following is an example of ecology? a. Studying earthquakes b. Looking for planets in outerspace c. Creating pharmaceutical drugs d. Studying how global warming affects whales
Answers
Answer:
D
Explanation:
How something affects a species
Studying how global warming affects whales is an example of ecology.
What is global warming?The rise in earth's average temperature than the normal is called global warming.It is happening due to greenhouse gases.This would have a negative impact on living organisms.What do you mean by ecology?"Ecology is the study of organisms and how they interact with the environment around them."Global warming affects the environment which in turn influences the living organism interacting with it.
Hence, the correct option is d. Studying how global warming affects whales.
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what does the circulatory system do for the stomach
Answers
Answer:
The digestive system breaks food down into nutrients such as glucose. Now the circulatory system enters the picture. It transports glucose and other nutrients from the digestive system to the cells. The circulatory system also transports oxygen from the lungs to the cells.
Nectar is a sugar laden liquid that is very energetically expensive to produce. Why do plants allocate resources to produce it instead of just producing more flowers?A. Nectar is sticky and traps wind borne pollen.B. Nectar provides energy during pollen tube formation.C. Nectar serves as an enticement for insects.D. Nectar provides nutrition to the developing embryo.
Answers
Nectar is used by plants to attract insects that will provide the flower pollen or to help the flower to disperse its pollen.
C. Nectar serves as an enticement for insects.
Which of the following can be used to measure the rate of photosynthesis?
light intensity (%)
oxygen production (mL/hr)
temperature
CO2 level
Answers
The light intensity can be used to measure the rate of photosynthesis.
Photosynthesis is defined as the process by which plants and organisms make use of sunlight to synthesize nutrients from carbon dioxide and water
Light is important for plants to photosynthesize no matter the level of carbon dioxide or temperature.
When the light intensity is increased, the rate of photosynthesis is also increased.Hence we can conclude that what can be used to measure the rate of photosynthesis is the light intensity.Learn more here: https://brainly.com/question/18599167
which of these factors is associated with sustainable farming
intensive farming
drip irrigation
overly irrigated soil
pesticide resistance
Answers
Drip irrigation is associated with sustainable farming. Therefore, option B is correct.
What is sustainable farming?Sustainable farming methods aim to preserve and enhance soil fertility while also protecting the environment and increasing the Earth's natural resource base. Sustainable agriculture has several objectives, including Increasing profitable agricultural income.
Intensive farming, overly irrigated soil, and pesticide resistance are not associated with sustainable farming, while drip irrigation is associated with it. Therefore, option B is correct.
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Which environmental group is most closely associated with mountain climbing, backpacking, and camping? A. Environmental Defense Fund B. Greenpeace C. Sierra Club D. World Wildlife Fund
Answers
The environmental group is most closely associated with mountain climbing, backpacking is Sierra Club, option (C) is correct.
The Sierra Club is most closely associated with mountain climbing, backpacking, and camping. Founded in 1892, the Sierra Club is one of the oldest and largest environmental organizations in the United States. It has a long history of promoting outdoor recreational activities and conservation efforts in natural landscapes, particularly in mountainous regions.
The club's members and supporters actively engage in activities such as hiking, backpacking, and camping, often in environmentally sensitive areas. The Sierra Club advocates for the protection of wilderness areas, preservation of ecosystems, and sustainable outdoor recreation practices. Through its outings programs and conservation campaigns, the Sierra Club encourages people to connect with nature, experience the beauty of mountains, and develop a sense of stewardship towards the environment, option (C) is correct.
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Which energy transformation is shown in the photo?
O A. The stove's burner transforms thermal energy into
electrical energy
O B. The cooking pot transforms thermal energy into
electrical energy.
C. The stove's burner transforms electrical energy into
thermal energy
O D. The cooking pot transforms electrical energy into
thermal energy.
Answers
Answer:
C
Explanation:
This one makes the most sense in the real world. Is there a photo you can show?