hydrophobic hormones are transported in the blood a. by binding to the red blood cells. b. by binding to hydrophilic transport proteins. c. in the form of hydrophilic salts. d. as hydrophilic preprohormones. e. contained in secretory vesicles.
Answers
The correct answer is (b) Hydrophobic hormones are transported in the blood by binding to hydrophilic transport proteins.
Hydrophobic hormones, such as steroid hormones (e.g., cortisol, estrogen, testosterone) and thyroid hormones (e.g., thyroxine, triiodothyronine), are lipophilic or lipid-soluble in nature. Being hydrophobic, these hormones do not readily dissolve in the watery environment of the bloodstream. To overcome this challenge, they require transport proteins for efficient transportation through the blood.
Transport proteins, known as carrier proteins or binding proteins, are produced by the liver and are specialized to bind with hydrophobic hormones. These proteins have hydrophilic regions that can interact with the aqueous environment of the blood while simultaneously binding to hydrophobic hormones. By forming complexes with transport proteins, hydrophobic hormones become soluble in the blood and can be effectively transported to their target tissues.
Once the hormone reaches its target tissue, it dissociates from the transport protein and interacts with intracellular receptors to exert its biological effects. The binding of the hormone to its receptor initiates a cascade of cellular events that regulate gene expression and other physiological processes.
It's important to note that hydrophilic hormones, on the other hand, can readily dissolve in the watery environment of the blood and do not require transport proteins for their transportation. They can freely circulate in the bloodstream in their soluble form.
Therefore, hydrophobic hormones are transported in the blood by binding to hydrophilic transport proteins, allowing them to be efficiently delivered to their target tissues.
To know more about Hydrophobic hormones follow the link:
https://brainly.com/question/31594630
#SPJ4
Related Questions
what are the main differences and similarities among the major groups of algae? How are these groups related to each other evolutionarily?
Answers
The main differences and similarities among the major groups of algae include their pigments, cell structures, and types of storage materials. Evolutionarily, these groups are related through their common ancestry as photosynthetic organisms.
The major groups of algae are green algae (Chlorophyta), red algae (Rhodophyta), and brown algae (Phaeophyta). Green algae contain chlorophyll a and b, red algae contain chlorophyll a and phycobilins, and brown algae contain chlorophyll a, c, and fucoxanthin. Cell structures differ as green algae have cellulose cell walls, red algae have cellulose and agar, and brown algae have cellulose and alginates. In terms of storage materials, green algae store starch, red algae store Floridian starch, and brown algae store laminarin. Evolutionarily, these groups are related through their common ancestry as photosynthetic organisms. Green algae are considered the most ancestral group, as they share similarities with land plants, while red and brown algae have diverged from the ancestral lineage. Overall, the differences and similarities among these groups can be attributed to their evolutionary adaptations to different aquatic environments.
To learn more about algae visit here:
https://brainly.com/question/31941119
#SPJ11
Name the following:
The cell that covers a large area and is broad and flat in shape.
Answers
Answer:
skin is the answer please and brainlest pleaaasssseeee
What types of energy do you think may have been involved when the Bunsen burner was lit with
the spark from the Van de Graaff generator
Answers
Heat, light, sound and fire may have been involved when the Bunsen burner was lit with the spark from the Van de Graaff generator. Bunsen burner is a common device in the lab.
What is a Bunsen burner?Bunsen burner is a laboratory device (gas burner) that generates a single open gas flame.
The gas most commonly used in Bunsen burner is generally natural gas, i.e., methane gas.
This device (Bunsen burner) can be used to generate a heat source during a lab experiment.
Learn more about the Bunsen burner here:
https://brainly.com/question/10281181
In what ways are the chemical reactions of photosynthesis and cellular respiration similar?.
Answers
Answer: Both produce energy.
Explanation: Both provide each other with the necessary ingredients for the process to take place: glucose and oxygen for cellular respiration, carbon dioxide and water for photosynthesis.
Suppose you were interested in the effect of breastfeeding versus formula feeding on the composition of gut flora in newborns. As part of your experiment, stool samples from healthy babies in the study get plated on various agar media. You notice that greater numbers of colonies are recovered when samples are plated on blood agar compared to nutrient agar (NA). After some diligent subculturing, you isolate several bacterial species capable of slow growth on the blood but not on the NA. You correctly surmise that these organisms: ______________
a. are opportunistic blood pathogens.
b. have extensive and complex nutritional requirements not met by NA are inhibited by the ingredients in NA.
c. should be classified as beta-hemolytic.
d. grow because the blood agar suppresses the growth of faster-growing bacteria.
Answers
Answer:
vAurora
Explanation:
what does it mean for a population to be in hardy-weinberg equilibrium? multiple choice allele frequencies in the population are occurring over time. evolution is occurring in the population. there are no changes in gene frequencies from one generation to the next. natural selection is occuring and selecting a particular phenotype in the population.
Answers
Absent unsettling circumstances, the genetic variety in a population will remain stable from one generation to the next.
Quiz: What does the phrase "Hardy-Weinberg equilibrium" signify in terms of population dynamics?Unless certain perturbations take place, both genotype and allele frequencies in a population remain constant from generation to generation. This condition is known as Hardy-Weinberg equilibrium.
When a population is at equilibrium, what does that mean?A population is said to be in genetic equilibrium when there is no evolution within it. In other words, allele frequency (gene variants) does not change over successive generations. In a genetic equilibrium, the gene or allele frequencies remain constant.
To know more about Hardy-Weinberg equilibrium visit:-
https://brainly.com/question/16823644
#SPJ4
Vibration and fine touch sensory impulses are carried by the anterolateral spinothalamic pathway. T/F?
Answers
False. Vibration and fine touch sensory impulses are not carried by the anterolateral spinothalamic pathway.
Instead, they are carried by the dorsal column-medial lemniscus pathway. The anterolateral spinothalamic pathway is responsible for transmitting pain, temperature, and crude touch sensations.
The transmission of pain, temperature, and rough touch sensations from the body to the brain is carried out by the anterolateral spinothalamic pathway, also referred to as the spinothalamic tract. It is a component of the somatosensory system, which enables us to perceive and comprehend sensory data coming from our internal organs, muscles, and skin. A network of neurons makes up the route, which carries sensory information from the periphery to higher brain centres. Sensory receptors in the skin initially take in sensory data, which is then sent to the dorsal horn of the spinal cord. The signals then climb through the anterolateral columns and are sent to the spinal cord's contralateral side.
Learn more about spinothalamic pathway here:
https://brainly.com/question/12371469
#SPJ11
suppose that the nee of a temperate grassland ecosystem is 200 units per month. the respiration by autotrophs is 195 units per month, and the respiration by heterotrophs is 80 units per month. what is the npp? group of answer choices 475 units per month 395 units per month 280 units per month 200 units per month
Answers
Given that the NEE value is 200 units per month, the monthly respiration of autotrophs is 195 units, whereas that of heterotrophs is 80 units. Then, the NPP value is 280 units per month.
NEE refers to the net ecosystem exchange, NPP refers to the net primary production, and GPP refers to the gross primary production. So to calculate NPP from the NEE and GPP, the formulae to use are GPP=NEE+autotrophs' respiration+heterotrophs' respiration and NPP = GPP-autotrophs' respiration.
Given the NEE value is 200 units per month, autotrophs' respiration is 195 units per month and heterotrophs' respiration is 80 units per month. Then, the GPP is calculated as,
GPP = NEE+autoresp+hetresp
= 200+195+80
= 475
Now, the NPP is calculated as,
NPP = GPP-autotrophs' respiration
= 475-195
= 280
The required answer is 280 units per month.
To know more about NEE:
https://brainly.com/question/25627593
#SPJ4
Directions: Select the correct graph. A moth population living in adeciduous forest relies on camouflage to protect itself from predators.These moths typically vary in color and are thus able to camouflage amongboth the light- and dark-colored trees of the forest. However, as sootemitted from nearby factories darkens the forest's trees, the mothpopulation begins to evolve. Which of the following distribution graphsbest represents the evolution of this moth population?A.B.C.orD.
Answers
In the graph, we can see how the original population ranged the same in each case, but considering the soot caused white moths to be more clearly spottable, and the black moths more imperceptible, the evolved population presented then a variation with respect to the original one. The graph that better represents this, is the first one, the A graph, since there we can see how a higher number of moths are restricted to the black moth part of the graph, than in the other graphs.
PLEASE HELP!!!!
Match each feature on Earth with the correct plate boundary.
You know that Earth's crust is divided into tectonic plates that moves via convection cells within the mantle. As these plates move, three kinds of plate boundaries are formed: divergent, convergent, and transform plate boundaries. Not only do these boundaries form, specific events occur at these boundaries.
ITEM BANK: Move to Bottom
Himalayan Mountains
Mid-Ocean Ridge San Andreas Fault
The largest known group of volcanoes on Earth is found underwater along the portion of the East Pacific Rise.
This boundary is the site of recurring earthquake activity and faulting
Two continental plates meet and formed folded mountains.
(item bank go in these)
Convergent boundary,Divergent boundary,Transform boundary
Answers
The correct matching order-
1. Himalayan Mountains: Convergent boundary
2. Mid-Ocean Ridge: Divergent boundary
3. San Andreas Fault: Transform boundary
A region on Earth where two or more lithospheric plates clash is known as a convergent boundary, often referred to as a destructive boundary. Subduction is the inevitable sliding of one plate beneath the other. The Wadati-Benioff zone, a plane with a high frequency of earthquakes, can be used to designate the subduction zone. These collisions can place over timescales of millions to tens of millions of years and can cause deformation, earthquakes, volcanism, orogenesis, lithosphere destruction, and orogenesis. Oceanic-oceanic lithosphere, oceanic-continental lithosphere, and continental-continental lithosphere all have convergent borders. Depending on the kinds of crust, convergent borders have different geologic characteristics.
To know more about Convergent boundary
https://brainly.com/question/28549411
#SPJ11
What is the base pairing of DNA and RNA?
Answers
The base pairing in DNA involves the four nucleotide bases: adenine (A), cytosine (C), guanine (G), and thymine (T). A always pairs with T, and C always pairs with G, through hydrogen bonding between the complementary base pairs.
The DNA double helix's two strands are joined together via base pairing, with the base pairs acting as the "rungs" of the ladder-like structure.
Thymine (T) is swapped out for uracil (U), which forms a hydrogen bond with adenine (A) in RNA. Hence, A-U and C-G are the bases that link together in RNA. Base pairing occurs inside the same strand of RNA, as opposed to between two complementary strands as it does in DNA, because RNA is normally single-stranded.
The nucleotide sequences in one strand of DNA and RNA must be complementary to one another in order for the strands to "unzip" and reproduce during cell division. This is accomplished via base pairing principles, which are essential to DNA and RNA's ability to store and transfer genetic information.
To know more about nucleotide click here,
brainly.com/question/1569358
#SPJ4
HELP ME PLEASE!!!!!!!!!!
Answers
Answer:
C
Explanation:
An H dominant allele has 2 of the same dominant (capital letters)
Which of the following describes the perspective of
environmental determinism?
O A contemporary ecological view that human activity is affecting the global
environment toward a negative outcome
O A former scientific viewpoint stating that factors within the physical geography
of a region shape the local population's culture and behaviors
O A twentieth-century idea that human cultures are imprinted on the landscape
in different forms of land use and architecture
O A belief system based on an ideology that humans have dominion over Earth
and its natural resources
Answers
Answer:
The correct answer is "former scientific viewpoint stating that factors within the physical geography of a region shape the local population's culture and behaviors".
Explanation:
The idea of environmental determinism rise during the early part of the twentieth century, when concepts such as "culture" and "society" had not been studied the way they do today. Environmental determinism states that the geographical and physical conditions of a region defines human society, including its economics and cultural features. Nowadays, environmental determinism is considered a simplistic way of studying humans, since it implies that social conditions have no impact on human's development.
The one that provides short term energy and structure to the body ____________________
Answers
Answer: ATP—Adenosine triphosphate,
Answer:
Adenosine triphosphate,
Explanation:
Hope this help
The process that is involved when a sensory system first detects an external stimulus is?
Answers
Sensation
How does sensory transduction work?Action potentials, or electrical impulses, are nearly entirely how the brain functions. (This is not the complete picture; there are more chemical components, but for the sake of this response, we will disregard them.) How to turn an universe of non-electrical inputs into a signal that the brain can understand is the issue at hand. Therefore, we have transducers—things or structures that can convert various forms of energy into electrical impulses that our brains and, incidentally, electronics can use.
On their cell membranes, sensory cells express a variety of chemicals. These structures serve a range of purposes, including supporting tissue integrity, acting as receptor sites, and carrying out signaling processes. The majority of these receptors react to chemical stimuli, such as those that adrenaline binds to in the heart, those that muscles express in the form of insulin and glucagon receptors, and so on. Some of these structures will, however, react to outside forces.
To learn more about sensation, visit:
https://brainly.com/question/28321839
#SPJ4
how would you test the Presence of starch in leaves ?
Answers
Answer: (You can search it up on google and find this) Lodine Solution is used to test leaves for the presence of starch. you need to: Heat a plant leaf in boiling water for 30 seconds (This stops its chemical reactions) heat it in boiling ethanol for a few minutes (This removes most of its colour)
Explanation:
the problematic functioning of what hormone may contribute to overeating?
Answers
The problematic functioning of the hormone leptin may contribute to overeating. Leptin is a hormone produced by fat cells that plays a role in regulating hunger and satiety.
Leptin is a hormone produced by fat cells that plays a role in regulating hunger and satiety. When leptin levels are low, the brain receives signals that the body needs more food, which can lead to overeating. Some individuals may develop leptin resistance, where the body does not respond properly to the hormone, which can also contribute to overeating and obesity. Additionally, certain medical conditions and medications can affect leptin levels and function, potentially leading to overeating as a side effect.
To learn more about Leptin click here
https://brainly.com/question/24297445
#SPJ11
Why do plants go dormant in the fall and
winter months?
A. There isn't enough energy given off for them to capture,
so they try to conserve it.
B. They go dormant to allow the surrounding plants to
absorb more sunlight.
C. This is when they are about to reproduce so they do this
to conserve energy before the cells split.
Answers
regulatory elements that function to increase transcription levels in eukaryotes are called
a. promoters
b.promoters c. enhancers d. transcriptional start sites e.activators
Answers
Regulatory elements that function to increase transcription levels in eukaryotes are called enhancers.
Enhancers are DNA sequences that can be located far from the gene they regulate and can still influence the transcription of the gene. They work by binding to transcription factors, which are proteins that bind to DNA and either activate or repress gene transcription.
Activators are proteins that bind to enhancers and stimulate transcription by recruiting RNA polymerase, the enzyme that synthesizes RNA. Promoters, on the other hand, are DNA sequences that are located near the transcriptional start site and provide the binding site for RNA polymerase to initiate transcription.
In summary, while promoters are important for initiating transcription, enhancers play a crucial role in regulating the amount of transcription that occurs. They can act over long distances and in a cell-type-specific manner to fine-tune gene expression.
Learn more about DNA :
https://brainly.com/question/3540768
#SPJ11
GIVING BRAINLIEST!!!!!
Which of the following describes the location of the tropical zone?
A) Between the temperate and the polar zones
B) Closest to the equator
C) Farthest from the equator
D) Near the North Pole and South Pole
Answers
Answer: B. The tropical zone lies closest to the equator.
Explanation:
(argumanta la importancia del desarrollo cientifico en el manejo del agua)
ayuda porfa :c
Answers
Answer:
La gestión del agua es importante ya que ayuda a determinar las expectativas futuras de riego. La gestión del agua es la gestión de los recursos hídricos bajo políticas y regulaciones establecidas. El agua, que alguna vez fue un recurso natural abundante, se está convirtiendo en un bien más valioso debido a las sequías y el uso excesivo.
Explanation:
La gestión de los recursos hídricos es un tema muy importante desde varios ángulos, como el desarrollo de masas de agua para el futuro, la protección de las masas de agua disponibles de la contaminación y la sobreexplotación y la prevención de disputas. Una cuestión primordial es el agua: su disponibilidad, calidad y gestión.
Aquí hermano te ayudé ^-^ ;) :)
Describe the benefits to using tissue cultures to
study medications used for treating cancer cells.
Answers
Answer:
The greatest advantage of CR is its rapid and efficient expansion of cell cultures from patient tissue samples. This allows researchers to screen tumors for sensitivity to anticancer drugs or immunotherapies quickly enough for the information to be of clinical use.
Explanation:
Explain the relationship between a leaf, plant cell, chloroplast and chlorophyll in terms of photosynthesis.
Answers
Answer:
Math Unit 2: Lesson 7
Area of a Circle
Area of a Circle Formula
(A = π r²)
1. Find the area of the circle below:
Area=
2. Find the area of the circle below:
Area=
Explanation:
to study the details of protein molecules on the surface of a cell a biologist wouldmost likely use a
Answers
Scanning electron microscope (SEM) can be used to study the details of protein molecules present on the surface of a cell. These give a three-dimensional structure of the molecules. Thus, the correct option is A.
What is Scanning Electron Microscope (SEM)?Scanning electron microscope (SEM) is a type of electron microscope, designed to directly study the surfaces of solid objects, that utilizes a beam of focused electrons of relatively low energy is scanned in a regular manner over the specimen to be observed.
Scanning electron microscopes use an electron beam to study samples with a resolution. The electrons are emitted from a filament and collect into a beam in the electron source. The beam is focused on the sample by a set of lenses in the column.
Therefore, the correct option is A.
Learn more about Proteins here:
https://brainly.com/question/17095120
#SPJ1
Your question is incomplete, most probably the complete question will be:
To study the details of protein molecules on the surface of a cell a biologist would most likely use a:
a. scanning electron microscope
b. transmission electron microscope
c. compound light microscope
d. dissecting microscope
help me will reward brainliest
Answers
I think it is Intercalary Option C
imagine that in humans hair type is controlled by incomplete dominance. what is the phenotype of a person that has a genotype rc
Answers
Incomplete dominance is a genetic concept that involves the manifestation of a trait that is an intermediate between the phenotypes of the parents. In humans, the type of hair is controlled by incomplete dominance. The phenotype of a person that has a genotype rc is wavy hair.
Hair type in humans is not controlled by a single gene. However, it is controlled by a complex of several genes.
In incomplete dominance, an offspring that is heterozygous for a certain trait expresses a phenotype that is intermediate between the phenotypes of the two homozygous parents. This means that both alleles of the gene are expressed, but the expression is reduced by a certain degree so that the offspring does not fully express the dominant allele.
it can be said that the type of hair in humans is controlled by incomplete dominance. This means that a person may express wavy hair if they have an rc genotype.
Wavy hair is an intermediate phenotype that is expressed when an offspring is heterozygous for the hair type gene. It is not a straight hair phenotype, which is the result of the homozygous dominant allele, nor is it a curly hair phenotype, which is the result of the homozygous recessive allele. The heterozygous rc genotype results in the expression of both alleles but with reduced expression of the dominant allele.
To know more about Genetic visit :
https://brainly.com/question/30459739
#SPJ11
Are the chemical messengers in the endocrine system that target
cells through the bloodstream
Answers
Answer:
Hormones
Explanation:
Hormones are chemical messengers in the endocrine system, and they are secreted by many types of glands, such as the pituitary gland and the thyroid gland, as well as target cells through the bloodstream, and are released into the bloodstream by endocrine glands.
The blood barrier system (BBS) consists of which of the following? Select all that apply. Blood-brain barrier. Blood-CSF barrier. Dura mater
Answers
The blood barrier system (BBS) consists of the a. blood-brain barrier and b. blood-CSF (cerebrospinal fluid) barrier.
The blood-brain barrier is a highly selective semipermeable border that separates the circulating blood from the brain and extracellular fluid in the central nervous system (CNS). It plays a crucial role in maintaining a stable environment for proper neuronal function and protects the brain from harmful substances. The blood-CSF barrier, on the other hand, is a similar selective barrier found at the choroid plexus, which is responsible for producing and regulating the cerebrospinal fluid. This barrier helps control the exchange of molecules and ions between the blood and the cerebrospinal fluid, providing a stable environment for the brain and spinal cord.
The dura mater, although part of the meningeal layers that protect the CNS, is not a component of the blood barrier system. It is the outermost, tough, fibrous protective covering of the brain and spinal cord, playing a significant role in the structural support and protection of the central nervous system. So therefore the the correct answer is a. blood-brain barrier and b. blood-CSF (cerebrospinal fluid) barrier. are the blood barrier system (BBS).
Learn more about central nervous system at
https://brainly.com/question/31445984
#SPJ11
Sarah learned that the steps of transcription and translation are similar to baking a cake from a recipe. The cell's genome is like a cookbook, with step-by-step directions. The mRNA copy is like writing down a copy of the instructions to give to someone else. What would the amino acids be most similar to?
Answers
The amino acids would be most similar to the ingredients used in the recipe.
When the mRNA moves out of the nucleus, it then gives the instructions (the genetic sequence) to someone else, which is tRNA. During translation, the tRNA and mRNA complex reads the genetic sequence and then binds required amino acids, sequentially. Thus, the combined amino acid chain forms the desired protein.
Therefore, the amino acids are the ingredients and the protein is the final dish.
To learn more about translation, go to:
https://brainly.com/question/29668811
a. How does the DIY DNA extraction compare to an extraction using a kit? Why?
b. How can you tell?
Answers
a. DIY DNA extraction methods typically use household ingredients and may lack specialized reagents for optimal yield, purity, and efficiency compared to extraction kits designed with standardized protocols.
b. Differences can be assessed through factors such as protocol complexity, DNA yield, purity assessment, and reproducibility of results between DIY and kit-based extractions.
a. The DIY DNA extraction and an extraction using a kit can differ in several aspects:
Ease of Use: DIY DNA extraction methods often utilize household ingredients and materials, making them simpler and more accessible for amateur scientists or educational purposes. Kits, on the other hand, are specifically designed with pre-measured reagents and detailed protocols, providing a standardized and user-friendly approach.
Efficiency and Yield: DNA extraction kits typically incorporate optimized protocols and specialized reagents that ensure higher efficiency and yield of extracted DNA. DIY methods may not always achieve the same level of efficiency, leading to lower DNA recovery or potential contamination.
Purity and Quality: DNA extraction kits generally include steps and reagents to remove contaminants (such as proteins and RNA) and ensure higher purity of the extracted DNA. DIY methods may lack these purification steps, resulting in impurities or degraded DNA.
b. A few indicators can help determine the differences between DIY DNA extraction and kit-based extractions:
Protocol Complexity: Comparing the step-by-step procedures of DIY methods and kit-based methods can reveal differences in complexity and the presence of additional purification or quality control steps in kits.
DNA Yield: Quantifying the yield of extracted DNA can provide insights into the efficiency of the extraction method. If the yield from a DIY extraction is consistently lower compared to a kit-based extraction, it suggests that the kit-based method may be more efficient.
Purity Assessment: Evaluating the purity of the extracted DNA can be done through techniques such as spectrophotometry or gel electrophoresis. If the DNA extracted using a kit shows less contamination or degradation than the DIY-extracted DNA, it indicates better quality control in the kit-based method.
Reproducibility and Consistency: Performing multiple extractions using both the DIY method and a kit and comparing the results for consistency and reproducibility can also indicate differences in performance and reliability.
It's important to note that DIY DNA extraction methods can be useful for educational purposes or preliminary experiments, but for more precise and standardized results, DNA extraction kits developed by reputable manufacturers are generally recommended.
learn more about DNA here
https://brainly.com/question/30006059
#SPJ11