Which are the primary arteries that supply the majority of the oxygenated blood to the brain?.
Answers
Answer:
internal carotid arteries
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URGENT
Vertebrate hormones travel through the bloodstream to reach their cells. Hormones can be a variety of kinds of molecules. Insulin is a hormone that is protein derivative and testosterone is a steroid molecule.
(a)Describe the structure of a protein hormone and give one more example.
(b)Describe the structure of a steroid hormone and give one more example.
(c) Compare and contrast the response to protein hormones and steroid hormones. Use specific hormones as examples. These hormones can be ones that are mentioned or provided or different hormones.
(d) Describe what happens on the target cell when the hormone reaches its surface.
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Is bacteria multicellular organisms
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Answer: No
Explanation:
Bacteria are usually unicellular organisms (prokaryotic).
A mutation occurs in a gene that encodes a G1 cyclin, such that the protein is unable to bind to its CDK. How will this affect the cell cycle
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A mutation in a gene that encodes a G1 cyclin, resulting in the protein's inability to bind to its CDK, will disrupt the cell cycle. G1 cyclins and their associated CDKs play a crucial role in regulating the progression from the G1 phase to the S phase.
Without proper binding, the cell may not advance through the cycle, potentially leading to cell cycle arrest or abnormal cell division. The cell cycle is regulated by a complex network of proteins, including cyclins and cyclin-dependent kinases (CDKs). G1 cyclins are critical for the transition from the G1 phase to the S phase of the cell cycle. When a mutation occurs in the gene that encodes a G1 cyclin, it can result in a non-functional protein that is unable to bind to its CDK partner. This can disrupt the normal progression of the cell cycle, potentially leading to cell cycle arrest, DNA damage, or cell death. The specific effects of the mutation will depend on the context and severity of the mutation, as well as the other factors that are involved in regulating the cell cycle.
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related to HELP part c number 1
Answers
Answer:
Due to suitable environment of the equator.
Explanation:
Latitude is abiotic factor that has a great impact on the occurrence of fish species as we can see in the graph, the fish species increases as we go towards equator whereas decreases when we go away from the equator. This is because the climatic condition and temperature of water at the equator is suitable and warm so this suitable environment attracts more species to lives there.
do schwann cells secrete growth factors
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Yes, Schwann cells secrete growth factors. Growth factors are naturally occurring proteins, which encourage cellular growth, proliferation, and differentiation. They are essential for cell communication, proliferation, and differentiation. Cells require growth factors to survive and reproduce.
Schwann cells are peripheral nervous system cells that support neuron health and growth. Schwann cells secrete several growth factors that stimulate the growth of axons, including nerve growth factor (NGF), brain-derived neurotrophic factor (BDNF), ciliary neurotrophic factor (CNTF), and glial-derived neurotrophic factor (GDNF).
Furthermore, Schwann cells secrete a range of proteins that can help to regenerate damaged nerves. They are also involved in the development and repair of the peripheral nervous system, which involves the regeneration of injured nerves. Schwann cells play a vital role in axonal regrowth by secreting growth factors and providing a physical bridge that aids in nerve regeneration. Schwann cells also help to guide axons to their targets during the development of the peripheral nervous system.
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Which finch shown below most use it beak to crack open nut or seed
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Answer:
c
Explanation:
Process in which chemical energy is used to produce carbohydrates
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Answer: photosynthesis
The process in which autotrophs capture light energy and use it to convert carbon dioxide and water into oxygen and sugars is called photosynthesis. The process in which autotrophs use chemical energy to produce carbohydrates is called chemosynthesis.
Plz mark brainliest:)
Homeostasis is also called_______
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Explanation: homeostasis is also called ^
1. What are the different types of fish (classification of fish)? 2. Give an example of an oily fish. 3. Give two examples of fish with shells. 4. Write two most popular ways of cooking fish. 5. Shrimps, Lobsters and Crabs are also referred to as
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Answer:1. types of fish- there are 3 types, jawless fish( Agnatha), cartilaginous fish (Chondrichthyes), and bony fish(Osteichthyes).
2. Oily fish example- salmon, tuna, trout, and mackerel.
3. Shellfish example- shrimp, crab, oysters, lobster.
4. Two popular ways of cooking fish- dry heat, and grilling.
5. shrimps, lobsters, and crabs are referred to as arthropods.
Explanation
does anyone know the answer i really dont get it
Answers
Answer:
Depending on the way it is I believe it should be organ system the way I'm used to listing it.
Explanation:
It could be different though.
Hardy-Weinberg equitibrium is an ideal state that is rarely achieved in nature, however, many populations are close enough to equilibrium that the Hardy-Weinberg equation accurately represents the allele frequency in the population. The Churchill polar bear population can be described as being in Hardy-Weinberg equilibrium due to ...i... but could also be discounted as a Hardy-Weinberg population due to -..ii-.
a. the fact that they migrate extensively; its relatively large population
b. the fact that the population is isolated during the denning season; the fact that mating is relatively random c. its relatively large population; the fact that they migrate extensively d. the fact that mating is relatively random; the fact that the population is isolated during the denning season
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Hence the correct Option is d: the fact that mating is relatively random; the fact that the population is isolated during the denning season.
Hardy-Weinberg equilibrium is an ideal state that is rarely achieved in nature, however, many populations are close enough to equilibrium that the Hardy-Weinberg equation accurately represents the allele frequency in the population. The Churchill polar bear population can be described as being in Hardy-Weinberg equilibrium due to its relatively large population but could also be discounted as a Hardy-Weinberg population due to the fact that the population is isolated during the denning season, and the fact that mating is relatively random.
A population is said to be in Hardy-Weinberg equilibrium when certain assumptions are met, including random mating, large population size, no migration, no mutation, and no natural selection. The Hardy-Weinberg equilibrium also represents the genetic makeup of the population. The Churchill polar bear population is relatively large and the mating is random, making it a Hardy-Weinberg population.
However, the population is also isolated during the denning season, and the mating is relatively random. Polar bears generally mate and reproduce during the months of March to May. Churchill, the polar bear capital of the world, attracts more than 3000 tourists each year who gather to watch the bears during their mating season.
The population is isolated during the denning season, which could cause non-random mating. Non-random mating can affect the frequency of alleles, making the population genetically different from the Hardy-Weinberg equilibrium population.
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When a man has an allele combination Ww for a trait, what percentage of his gametes (sperm cells) will have a dominant allele for that trait? Answer format: XX%
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Answer:
Explanation:
Gametes are haploid cells, and in humans, gametes each has only one allele.
The distribution of alleles is random, so on the average, 50% will have W (dominant allele) and the other 50% will have the w (recessive allele).
Which of the following statements is true of a gene and its alleles?A gene may have more than two alleles, which can interact with one another in recessive, dominant, codominant, etc. fashions.Two genes can share the same alleles in a phenomenon called pleiotropy.A gene's alleles are the only factors that influence its corresponding phenotype; environment does not play a role.All genes have only two alleles: a dominant allele and a recessive allele.
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The true statement regarding a gene and its alleles is that a gene may have more than two alleles, which can interact with one another in various ways, such as recessive, dominant, codominant, incomplete dominance, etc. Alleles are different versions of a gene, which occur due to mutations.
These mutations can either be beneficial, harmful, or neutral, and they affect the expression of the gene and, ultimately, the phenotype.Two genes can share the same alleles in a phenomenon called pleiotropy, which occurs when a single gene affects multiple phenotypic traits. For example, the sickle cell gene, which causes sickle cell anemia, also provides some resistance to malaria. Hence, a single gene affects both the disease and its resistance.Contrary to the statement, a gene's alleles are not the only factors that influence its corresponding phenotype. Environmental factors such as diet, temperature, humidity, and exposure to toxins can also affect the gene expression and, therefore, the phenotype.Lastly, not all genes have only two alleles; some genes have multiple alleles, while others have only one. Moreover, not all genes exhibit dominant-recessive inheritance; some genes show incomplete dominance, where both alleles contribute to the phenotype, or codominance, where both alleles are expressed equally.In summary, the true statement is that a gene may have more than two alleles, and the expression of the gene and its interaction with other genes and environmental factors influence the phenotype.For such more question on pleiotropy
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A gene may have more than two alleles, which can interact with one another in recessive, dominant, codominant, etc. fashions. This statement is True.
Genes are units of heredity that are passed down from parents to their offspring. They contain the instructions for the development and function of an organism. Alleles are variants of a gene that arise from mutations and can have different effects on the phenotype of an organism. For example, the gene for eye color has multiple alleles, including brown, blue, and green, which can interact with each other in different ways to produce a wide range of eye colors.
Pleiotropy refers to the phenomenon where a single gene can have multiple effects on an organism's phenotype. For instance, a gene that codes for a protein involved in both hair growth and the production of melanin pigment can affect both hair color and skin color in humans.
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9. Using Chargaff's Rule, if a DNA strand contains 40% of Guanine bases. What
percentage of the nitrogenous bases in the sample are Thymine?
Answers
Answer:
10%
Explanation: Guanine is 40 which means cytosine is 40
that means that the other 20 is admine and thymine
So thymine is 10 other 10 is admine
40+40+10+10=100
Does the Persian cat population increase or decrease?
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Answer:
Thus, the management of cat populations is increasing in the public interest. Understanding their genetic relationships helps to manage their healthcare and predict and prevent unwanted genetic diseases and traits.
Why is crossing over of the chromosomes during meiosis important?
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Answer:
C) It allows for more genetic diversity of gametes.
Explanation:
Mendel's Law of independent assortment states that alleles cross over to create genetic diversity.
the uppermost layer of skin is: a. full of dead keratinocytes b. called the hypodermis c. called the dermis d. filled with nutrient-rich capillaries e. composed of dense connective tissue
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The correct option for the uppermost layer of skin is "full of dead keratinocytes". Explanation: The skin is the largest organ of the body and has several functions, such as protection, regulation of temperature, and sensation.
It is composed of three layers, the epidermis, dermis, and hypodermis. The epidermis is the outermost layer of the skin and is composed of stratified squamous epithelium. It has no blood vessels or nerve endings and receives nutrients through diffusion from the underlying dermis.
The epidermis contains four to five layers of cells, including :Stratum basale or basal cell layer Stratum spinosum or spinous cell layer Stratum granulosum or granular cell layer Stratum lucidum or clear cell layer (only in thick skin)Stratum corneum or cornified cell layer The uppermost layer of the skin is called the stratum corneum or cornified cell layer. It is full of dead keratinocytes that are flattened, dead cells that have become filled with the protein keratin. The keratin provides a tough, waterproof layer that protects the skin and underlying tissues from injury, infection, and water loss. Therefore, option A. full of dead keratinocytes is the correct answer.
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Question 14 (2 points) The process of evolution that involves a change in the DNA sequence that leads to evolutionary change is called natural selection. O mutation. genetic drift. migration.
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The process of evolution that involves a change in the DNA sequence that leads to evolutionary change is called a mutation.
A mutation is a sudden and lasting alteration in the DNA sequence that can influence genetic variation. Changes in the DNA sequence can influence phenotype, which may or may not have an effect on an organism's fitness. Mutations occur spontaneously, either from errors in DNA replication or from exposure to mutagenic agents. Mutations may happen in either coding or non-coding regions of the DNA, and they can be either silent or expressed.
Evolution is a natural process that results in the gradual change of inherited characteristics in populations over generations. It is the process of alteration in the inherited characteristics of species over successive generations. In other words, it is the process of gradual changes that happen to species over time as they adapt to their environments. It can be defined as a change in the gene frequency in a population over time.
Types of Evolution 1. Natural Selection 2. Genetic Drift 3. Gene Flow 4. Mutation 5. Non-Random Mating 6. Admixture 7. Mutation Pressure 8. Genetic Draft 9. Bottleneck and Founder Effect 10. Sexual Selection the process of evolution that involves a change in the DNA sequence that leads to evolutionary change is called a mutation.
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Which of the following are reactants of photosynthesis?
O 6CO2 + 6H₂O + Energy
O C6H12O6 + 602
O CO2 + H₂O + Energy
O C6H12O6 + 02
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food for the cattle is known as?
Ans fast
I will follow a
you and mark you as brainiest
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Answer:
Most cattle in the US have a fodder that is composed of at least some forage (grass, legumes, or silage). In fact, most beef cattle are raised on pasture from birth in the spring until autumn (7 to 9 months). For pastured animals, grass is usually the forage that composes the majority of their diet.
Food for the cattle is know as Fodder
The following F1 cross is made: BBGg x Bbgg. Which is not a possible outcome in the F2 generation?
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`When the cross of BBGg x Bbgg is made then in this situation the gametes that are formed from BBGg are BG,Bg and from Bbgg is Bg,bg are BBGg,BBgg,BbGg and Bbgg. The four outcomes are BBGg,BBgg,BbGg and Bbgg and the homozygously dominant and the recessive is absent.
What is homozygous ?It is the situation in which the same types of gametes are present.
In the cross of BBGg x Bbgg the gametes that are absent will be the homozygous dominant condition and the homozygous recessive as well. BBGg,BBgg,BbGg and Bbgg are the gametes that are all heteroygous.
Heterozygous condition is the condition in which different gametes are present that is different different situation is present and the gametes in the offspring are totally different.
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what is the food that plants produce during photosynthesis?
A. chlorophyll
B. Chloroplasts
C. Glucose
D. Carbon Dioxide
(pls help its for a test and i don’t get any of it)
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Following is a cost benefit analysis regarding the removal of arsenic (a poison) in water. Consider the costs and benefits , choose a side , and explain why you chose the side that you did . Costs: this requires a vast array treatment technology with detailed specifications it will cost companies $60-700 million dollars to implement the changes. The companies will raise the price of their product drastically to counteract their expenses , making everyday items more expensive for you. Benefits : millions of dollars will be saved on potential health problems. Associated bladder and lung cancer instances will drop. This will lower the environmental impact of arsenic on the ecosystem .
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The biggest harm to human health from arsenic comes from contaminated water used for drinking, food preparation, and irrigation of food crops.
It cause cancer and skin sores when consumed over an extended period of time. Diabetes and cardiovascular disease have also been linked to it. Exposure during pregnancy and in the early years of life has been associated to impaired cognitive development and an increase in the mortality of young adults.The most crucial measure in the affected communities is to provide a safe water supply in order to stop future arsenic exposure.Replace supplies with high levels of arsenic, such as groundwater, with sources with low levels that are also safe for microorganisms, like rainwater and treated surface water.Install centralized or household methods for removing arsenic, and make sure the extracted arsenic is disposed of properly. Technologies for removing arsenic include membrane processes, oxidation, coagulation-precipitation, absorption, and ion exchange. The key to successful interventions is community involvement and education. Avoiding drinking arsenic-contaminated water is the greatest strategy to prevent arsenic poisoning. Instead of attempting to remove arsenic from water for community water supplies, it would be feasible and more cost-effective to transfer to a source of water that is lower in arsenic.Learn more about Arsenic here:
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If a scientist is studying the evolutionary relationship between two species of birds, what tool could she use to help her chart their relationship
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Scientists collect information that allows them to make evolutionary connections between organisms. Similar to detective work, scientists must use evidence to uncover the facts. In the case of phylogeny, evolutionary investigations focus on two types of evidence: morphologic (form and function) and genetic.
The extracellular fluid compartment includes what fluids? Check all that apply.
A)Interstitial fluid
B)Blood plasma
C)Cerebral spinal fluid
D)Pleural and pericardial fluid
E)Cytoplasm
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The extracellular fluid compartment includes Interstitial fluid, Blood plasma, Cerebral spinal fluid, Pleural and pericardial fluid. The correct options are A, B, C, and D.
Extracellular fluid (ECF) refers to all the body fluids that are outside of cells.
This includes interstitial fluid, blood plasma, cerebrospinal fluid, pleural and pericardial fluid, and synovial fluid. Cytoplasm is not considered extracellular fluid as it is contained within cells.
The extracellular fluid (ECF) plays a vital role in maintaining the body's homeostasis by providing nutrients to cells and removing waste products from them. Some of the key uses of extracellular fluid include: Transport, Waste removal, and Buffering.
Thus, the correct options are A, B, C, and D.
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which plants that grow here do people use as medicinal plants?
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Answer:
American beautyberry.
Eastern Red Cedar.
Elderberry.
Giant Reed.
Greenbriar.
Honey Locust.
Osage-Orange.
Palmetto.
Explanation:
I need help on the this last assignment
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Photosynthesis is a process that makes glucose (sugar) from carbon dioxide and water with help from the sun using the pigment chlorophyll.
What is photosynthesis about?The ongoing process of cell growth, division, and replacement is called the cell cycle.
Photosynthesis captures energy from the sun using the pigment chlorophyll.
Cellular respiration makes energy in the form of ATP (adenosine triphosphate), and waste products are carbon dioxide and water.
Anaerobic respiration occurs without oxygen.
Coiled and condensed DNA is called a chromosome.
In the cell division process known as mitosis, a single cell splits into two completely identical daughter cells.
Mitosis occurs in eukaryotic cells, which include cells of plants, animals, and fungi.
Mitosis produces two daughter cells, and they are identical to each other and to the parent cell.
The four stages of mitosis are:
Prophase
Metaphase
Anaphase
Telophase
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which part of the membrane can catalyze a chemical reaction
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Hope this is right and helpful
Answer:
enzymes
Explanation:
What happens if the wealth of wines do not function properly yes and write
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When the wealth of wines does not function properly, it leads to the improper maintenance of the wine. A wine's wealth refers to the process of managing the wine, from growing the grapes to preparing the wine for consumption.
Proper functioning of the wine's wealth is necessary for the wine's taste, quality, and durability. The wealth of wines is responsible for the following functions: Growing and harvesting grapes - The wealth of wines manages the cultivation of grapes, which are used to make wine. This includes determining the type of grapes to be grown, planting, irrigation, and fertilizing the grapes. Harvesting and crushing grapes - After the grapes have matured, the wealth of wines is responsible for harvesting and crushing the grapes to extract the juice. Fermentation and aging - After crushing, the grapes undergo fermentation and aging, which are essential processes for the production of wine. Bottling and labeling - Once the wine has matured, the wealth of wines is responsible for bottling and labeling the wine. The improper functioning of the wealth of wines has the following consequences: Poor taste - If the grapes are not cultivated properly, the wine's taste may be compromised, resulting in a poor quality wine. Low quality - Improper crushing, fermentation, and aging can result in low-quality wine, which will be rejected by consumers. Poor durability - Poor labeling and bottling can result in the wine being stored improperly, resulting in its spoilage.
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A forest fire burns down most of the trees of a forest. What are the most likely effects of a forest fire? Responses Plants do not grow in the burned soil, and a desert forms. Plants do not grow in the burned soil, and a desert forms. The forest ecosystem is replaced by a grassland ecosystem. The forest ecosystem is replaced by a grassland ecosystem. Grasses grow quickly, followed by larger plants, and eventually the forest returns. Grasses grow quickly, followed by larger plants, and eventually the forest returns. New trees begin growing, but remain short and small.
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A forest fire burns down most of the trees of a forest. The most likely effects of a forest fire.
What is forest fire?Forest fires are also referred to as Wildfires. They are the uncontrolled fires that occur in forests, grasslands, and other rural areas.
They can be caused by lightening strikes, human activity or natural phenomenon such as extreme dry weather conditions.
Effects of forest fires:
Destruction of habitatSoil erosionAir pollutionClimate change Economic impactsIn conclusion, forest fires are serious environmental problems that can have far-reaching impact on the environment of wildlife and human communities.
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