steroid hormones can enter a cell by simple diffusion. therefore steroids _____
Answers
that steroid hormones can enter a cell by simple diffusion. this is possible. Steroid hormones are small hydrophobic molecules that can easily pass through the cell membrane, which of a phospholipid bilayer that permeable to non-polar molecules like steroids.
Steroid hormones can enter a cell by simple diffusion. Therefore, steroids are lipid-soluble. Steroid hormones, such as testosterone and estrogen, are able to enter a cell by simple diffusion due to their lipid-soluble nature. This are in the characteristic allows them to easily pass through the lipid bilayer of the cell membrane without requiring any specialized transport proteins.
Steroid hormones are derived from cholesterol, which is a lipid molecule. Lipids are soluble in nonpolar environments, such as the hydrophobic core of the cell membrane.. Simple diffusion is the movement of molecules from an area of higher concentration to an area of lower concentration, without the need for energy or transport proteins. Since steroid hormones are lipid-soluble, they can pass through the lipid bilayer of the cell membrane by simple diffusion Once inside the cell, they can bind to specific receptors and modulate gene expression, influencing various physiological processes.
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Related Questions
GIVING BRAINLIEST!!
What type of environmental change occurs when the sun warms and melts glaciers and polar ice caps?
A) Lack of food
B) Climate change
C) Increased predators
D) Pollution
Answers
Answer:
B) Climate Change
Hope this helps :)
Answer:
um B Climate change
Explanation:
Recirculating aquaculture systems do not reduce the amount of wastewater that is discharged into the environment. True or false
Answers
Answer:
true im pretty sure
Explanation:
What was the main goal of the human genome project (hgp)? see concept 21.1 (page)
Answers
The main goal of the human genome project(hgp) is to identify the nucleotide sequence of the whole human genome and map all of the human genes.
To identify the DNA sequence of the entire human genome, researchers from around the world collaborated on the Human Genome Project (hgp).
Sequencing the entire genome. Identification of the complete human genome are some other goals for human genome project.
The Human Genome Project (HGP) was an international, cooperative research initiative with the aim of completely mapping and comprehending every human gene. Our "genome" is the collective name for all of our genes.
The Human Genome Project located the entire human gene pool, sequenced them all, and identified some alleles, notably those that, in the event of a mutation, are capable of causing disease.
Genes may be mapped in relation to other genes or to the physical characteristics of the chromosome.
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for what are if channels responsible in cardiac autorhythmic cells? for what are if channels responsible in cardiac autorhythmic cells? membrane repolarization the pacemaker potential cardiac diastole action potential submitrequest answer
Answers
The If channels are responsible for the pacemaker potential in cardiac autorhythmic cells.
What are pacemaker cells?Pacemaker cells or autorhythmic cells are found in the sinoatrial node (SA) of the heart. These cells are responsible for creating an electrical impulse at regular intervals to establish the heart rate. This is due to the pacemaker potential that is a unique property of these cells.
IF channels play an important role in pacemaker cells' ability to spontaneously generate action potentials. This is because, when If channels open, sodium ions (Na+) move into the cell, and potassium ions (K+) move out of the cell, resulting in a slow depolarization of the membrane that brings it to threshold to trigger an action potential.
This process initiates the pacemaker potential that is responsible for cardiac rhythm. The action potential is the basis for the cardiac contraction that occurs during the cardiac cycle. The If channels initiate the pacemaker potential, and the resulting action potential induces the cardiac cycle through systole and diastole.
The pacemaker potential is a slow depolarization of the membrane that brings it to threshold to trigger an action potential. Thus, the If channels are responsible for generating the pacemaker potential in cardiac autorhythmic cells.
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The wrasse eats parasites off the parrot fish. The parrot fish protects the wrasse from predators.symbiotic relationship
Answers
Commensalism is a long-term biological interaction in which members of one species gain benefits while those of the other species neither benefit nor are harmed.
Answer please I will give points
Answers
Answer:
A
//this msg was written as I needed more words//
Answer:
The answer is a
Explanation:
The answer is a because it ball a can't rollout a flat surface unless gravity pulls on ball A
Sheep are raised in significantly smaller numbers in the United States than either cattle or pigs. Sheep farming has changed in recent years. How has it changed?
A.
It has increased since 1980.
B.
It has declined since 1980.
C.
It has increased since 2000.
D.
It has declined since 1960.
Answers
The shortage of the resources along with the maintenance as this sis why the requirement that is getting lesser has impacted the industry. Although it contributes a large amount to the economy.
What is the name of 1st hybrid sheep ?It is the sheep that was named as Dolly and was invented in 2002 by cloning.
The shortage of the large-animal veterinarians taking place in many areas of country is challenge to sheep industry and to the other livestock industries as well . The same conditions led to the short fall in the United states as well.
Today, the domestic sheep count is 1/10 of the size it was in the World War II in the United states . The decrease is a result of the economic and the cultural factors that are coming together And it has left to the wonders. Some of the sheep that are raised for the wool others primarily for food.
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7. What is the proper sequence of events in maintaining homeostasis?
a. 1. Stimulus, 2. Receptor, 3. Signal, 4. Response
b. 1. Stimulus, 2. Response, 3. Signal, 4. Receptor
C. 1. Receptor, 2. Stimulus, Signal, 4. Response
d. 1. Signal, 2. Receptor, 3. Stimulus, 4. Response.
Answers
Answer:
a.
Explanation:
stimulus, receptor detects changes, input info and output info(signal), response
a. 1. Stimulus, 2. Receptor, 3. Signal, 4. Response
Homeostasis is any self-regulating process by which an organism tends to maintain stability while adjusting to conditions that are best for its survival.
If homeostasis is successful, life continues; if it's unsuccessful, it results in a disaster or death of the organism.
Proper sequence of events in maintaining homeostasis:
Stimulus: Produces change in variable, change detected by receptor. Input: Information sent along efferent pathway to control center. Output: Information sent along efferent pathway to activate effector. Response: Feeds back to influence magnitude of stimulus and returns variable to homeostasis.Therefore, the correct option is a.
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Which of these pairs does not correctly match a carbohydrate with its function?
Answers
Of the available options, the first one states that cellulose is a structural part of the hair, this is not correct for several reasons, first cellulose is a biopolymer characteristic of cellular walls in plants, and it's not present in animal cells, secondly human hair is formed mainly of keratin a protein, therefore their basic units are amino acids, not carbohydrates. Therefore taking this into consideration, the correct answer is option 1.
Significant amounts of phosphorus are found in all locations on Earth except the..
Answers
Answer:
Atmosphere
Explanation:
Phosphorus cycle in nature is a unique cycle compared to the other natural biological and chemical cycles such as the carbon, nitrogen, sulfur and water cycles, as there is no gaseous phase in the phosphorous cycle. Due to the prevailing atmospheric temperature and pressure which are not appropriate for the formation of gases associated with phosphorus, the compounds in nature where phosphorus can be found are not gases. Phosphorus can therefore be found majorly in sedimentary rocks.
The atmospheric temperature and pressure are incapable of forming phosphorus compounds, Phosphorus has not been found in the atmosphere.
Phosphorus has been the recycled in the atmosphere within the biosphere, lithosphere, and hydrosphere. In the nature, the phosphorus has been present in the sedimentary rocks, with the absorption by plants and animals.
The phosphorus cycle has been consisted of the weathering, absorption by plants and animals and return to the lithosphere with the decomposition. Since the atmospheric temperature and pressure are incapable of forming phosphorus compounds, Phosphorus has not been found in the atmosphere.
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stages of artificial seasoning
Answers
Answer:
Freshly felled. Freshly felled wood is sometimes called green wood.
Air dry. Air dry wood has reached the stage of the seasoning process by which the moisture content that was as high as 50% when the wood was first cut has dropped to around 25%. .
House dry
Explanation:
describe one financial challenge that young entrepreneurs may initially encounter that indicate how they could deal with this challenge
Answers
A new firm may take years to make a profit, but that doesn't imply it won't flourish. Every entrepreneur need a certain amount of seed cash to cover the costs of employing employees, renting space, purchasing or leasing equipment, marketing, and so on.
II. Use the diagram below to answer the following questions.
rat
Plant
insect
mice
snake
1. Which converts light energy to chemical energy?
2. Among the animals, which will have the least energy?
3. Which is the secondary consumer?
4. Which is herbivore?
5. Which organism will have the greatest energy?
Answers
Answer:
ans:chlorophyll,insect,
When a mosquito bites you and consumes some of your blood it is
acting as a(n) ____.
a. endoparasite
b. parasitoid
c. ectoparasite
d. metaparasite
Answers
When a mosquito bites you and consumes some of your blood, it is acting as an ectoparasite. So, option C is accurate.
An ectoparasite is an organism that lives on the external surface of its host and derives its nourishment or resources from the host's body. These parasites can be found on various animals, including humans, and they typically feed on blood, skin cells, or other bodily fluids.
In the case of a mosquito, it feeds on the blood of its host by piercing the skin with its mouthparts and sucking blood. The mosquito does not live inside the host's body but rather feeds externally. Therefore, the correct answer is option c, ectoparasite.
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1.Pine pollen grains often have air sacs.*
True
False
2.Division 1 of meiosis is called "reduction division." *
True
False
3.Fruits develop from the stamens.
True
False
Answers
Answer:
1 true
Air-filled sacs in the pollen grains of pine trees allow pollen to travel farther through the air. ... Each pollen grain is attached to two or three air-filled sacs, or sacci, which develop from the outer layer of the pollen
2 true
process of meiosis involves two divisions of the genetic material. The first division is called the reduction division – or meiosis I
3 false
When a grain of pollen reaches the stigma, it creates a pollen tube for the sperm to journey down the style and fertilize the ovule; fertilized ovules become seeds. Fertilization is the death of the flower, as the petals drop or wither at this point and the ovary starts to enlarge and ripen into what we know as fruit.
The principle of competitive exclusion states that:.
Answers
The principle of competitive exclusion is a fundamental ecological concept that states that two species competing for the same limited resource cannot coexist indefinitely.
In other words, one species will outcompete and ultimately eliminate the other species from the ecosystem. This principle was first proposed by Russian biologist Georgy Gause in the 1930s and has since been widely studied and accepted in the field of ecology.
Competitive exclusion occurs because resources such as food, water, and space are limited, and as such, different species have to compete for access to these resources. The more efficient species at utilizing these resources will have a competitive advantage, leading to the exclusion of the less efficient species.
However, it is important to note that competitive exclusion is not always absolute. In some cases, species may be able to partition resources or adapt to different niches, allowing them to coexist. This can be seen in diverse ecosystems such as coral reefs or tropical rainforests where there are many different species sharing the same resources.
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glucose-6-phosphate dehydrogenase deficiency (g6pd) is inherited as an x-linked recessive allele in humans. a woman whose father had g6pd is planning a family with a man who has no history of the disease. what proportion of their sons are expected to have the disease?
Answers
50% of their sons are expected to have G6PD deficiency, while the other 50% are expected to be unaffected carriers like their mother.
Since glucose-6-phosphate dehydrogenase deficiency (G6PD) is an X-linked recessive disorder, the gene that codes for it is located on the X chromosome. Therefore, males who inherit a single copy of the mutant G6PD gene from their mother will express the disease, while females require two copies of the mutant gene (one from each parent) to develop the disease.
When they have a son, he inherits one X chromosome from his mother and one Y chromosome from his father. The son has a 50% chance of inheriting the X chromosome with the G6PD mutation from his mother and a 50% chance of inheriting a normal X chromosome.
Therefore, the probability of their son having the disease is 50%.
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The main role of calcium ions at chemical synapses is to
Select one:
a. depolarize the axon terminal of the presynaptic cell.
b. bind to neurotransmitter receptors on the postsynaptic cell
c. cause fusion of synaptic vesicles with the plasma membrane of the axon terminal.
d. interfere with IPSPs in the postsynaptic cell.
e. diffuse across the synaptic space and enter the postsynaptic cell.
Answers
The main role of calcium ions at chemical synapses is to cause fusion of synaptic vesicles with the plasma membrane of the axon terminal. This process allows for the release of neurotransmitters into the synaptic cleft, which can then bind to neurotransmitter receptors on the postsynaptic cell and depolarize it.
Without the influx of calcium ions, the release of neurotransmitters and subsequent communication between neurons would not be possible.
Chemical synapses are biological connections that allow impulses to travel from neurons to non-neuronal cells, like those in muscles or glands, as well as between neurons. In the central nervous system, circuit formation is made possible via chemical synapses between neurons. They are essential to the biological calculations underlying vision and thinking. They make it possible for the nervous system to communicate with and regulate many bodily processes.
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Coat color in mice is another excellent example of epistasis. In mice agouti (A) is the wild type, yellow, coat color, which is dominant to the black (a) coat color. A different gene controls whether or not the pigment is deposited in the fur. The dominant allele (D) allows the pigment, while the recessive allele (d) causes albinism in the mouse, regardless of the A/ a allele. If a mouse with the genotype AADd is crossed with a mouse that has a genotype aaDd, what will the phenotypic ratios of the offspring be?
Answers
The phenotypic ratio of the offspring if a mouse with the genotype AADd is crossed with a mouse that has a genotype aaDd, will be 4:2, yellow with pigment to yellow without pigment.
To determine the phenotypic ratios of the offspring, we need to first determine the gametes produced by each parent. The first parent (AADd) can produce four different gametes: AD, Ad, AD, and Ad. The second parent (aaDd) can also produce four different gametes: aD, aD, ad, and ad.
To determine the genotypes of the offspring, we can use a Punnett square.
| | A D | A d |
|---|---|---|
| a D | AaDD | AaDd |
| a d | Aadd | Aadd |
From the Punnett square, we can see that there are two possible phenotypes of the offspring: yellow (agouti) with pigment or yellow (agouti) without pigment.
The yellow with pigment phenotype (A_D_) is produced by the following genotypes: AADD, AADd, AaDD, and AaDd.
The yellow without pigment phenotype (A_dd) is produced by the following genotypes: Aadd and aaDd.
Thus, the phenotypic ratio of the offspring will be 4:2, yellow with pigment to yellow without pigment.
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Which situation would most likely result in evolution? Question 12 options: a. A green parrot has an allele for green feathers and an allele for blue feathers. b. A large population continues to grow larger. c. A butterfly predator sees yellow more easily than it does green, and a population of butterflies includes both phenotypes.
Answers
Answer:.
Explanation:
a+population+of+mice+is+in+h-w+equilibrium.+sampling+techniques+count+16%+of+the+organisms+are+homozygous+recessive.+what+percent+are+homozygous+dominant
Answers
Total, 6% of the organisms in the population are homozygous dominant.
In a Hardy-Weinberg equilibrium, the frequency of alleles remains constant from generation to generation. The Hardy-Weinberg equilibrium equation states that the frequencies of genotypes in a population can be expressed as;
p² + 2pq + q² = 1
where;
p = frequency of the dominant allele
q = frequency of the recessive allele
Given that 16% of the organisms are homozygous recessive (q² = 0.16), we can calculate q;
q² = 0.16
q = √0.16
q ≈ 0.4
Since p + q = 1, we can calculate p;
p = 1 - q
p = 1 - 0.4
p ≈ 0.6
To determine the percentage of individuals that are homozygous dominant (p²), we can square the value of p and multiply by 100;
Homozygous dominant percent = p² × 100
Homozygous dominant percent = (0.6)² × 100
Homozygous dominant percent ≈ 36%
Therefore, approximately 36% of the organisms in the population are homozygous dominant.
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--The given question is incomplete, the complete question is
"A population of mice is in Hardy-Weinberg equilibrium. sampling techniques count 16% of the organisms are homozygous recessive. what percent are homozygous dominant."--
Name 3 things that come from decayed plants, are fossil fuels, and release carbon dioxide when they are burned.
Answers
Answer:
carbon cycle, neutral, and decomposition
What is the volume of a 13.4 g silver coin?
Answers
Answer:
im pretty sure it would be 13.4 g
Explanation:
Where do carnivorous plants typically exist? a. In areas with limited carbon dioxide
b. In areas with inadequate amounts of soil
c. In areas with adequate amounts of soil
d. In areas with limited oxygen
e. In areas with limited nitrogen
f. In areas with little water
Answers
Answer:
So it would be B since the areas have inadequate amounts of soil.
Explanation:
The habitats of carnivorous plants are varied but usually involve wet, low-nutrient sites including bogs, swamps, waterbodies, watercourses, forests and sandy or rocky sites.
Would we have the Same countries If Pangea existed? And would we look the same?explain please
Answers
primers in cellular dna replication are made of ___________. primers in polymerase chain reaction are made of ___________ .
Answers
In cellular DNA replication, the primers are made of RNA, and in polymerase chain reaction, the primers are made of DNA.
What is DNA replication?DNA replication is the process of producing two similar copies of DNA from one original DNA molecule. DNA replication is a biological process that occurs in all living organisms, allowing them to produce offspring that have DNA matching their parents. DNA replication takes place in cells during the cell cycle, the time between cell divisions, as the cells are about to divide.
What is polymerase chain reaction?Polymerase Chain Reaction (PCR) is a technique used in molecular biology to create millions of copies of a specific DNA sequence. PCR is based on three essential steps: denaturation, annealing, and extension. PCR is an efficient and precise way of amplifying a specific DNA sequence from a small amount of DNA or a complex mixture of DNA. It is used in many fields, such as research, forensic science, medical diagnosis, and biotechnology.
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Plz help I little time
Answers
Answer:
-There are two categories of these factors: abiotic and biotic. Abiotic factors are the non-living parts of the environment that can often have a major influence on living organisms. Abiotic factors include water, sunlight, oxygen, soil and temperature.
Explanation:
Hopefully this helped, if not HMU and I will get you a better answer.
-Have a great day! :)
Explanation:
Abiotic factors for plants are sunlight, carbon dioxide,water, temperature and nutrients
PLEASE HELP
How do algae blooms destroy aquatic life?
depleting oxygen needed by organisms
by raising the water temperature
by getting into municipal water supplies
by giving off toxins that kill life
Answers
Answer:
A. Depleting oxygen needed by organisms
Explanation:
When the algae and bacteria in the algae bloom die, the decomposition process uses up most of the surrounding oxygen.
Which energy transformation occurs when the archer releases the string?
OA. Elastic energy is transformed into electrical energy.
OB. Chemical energy is transformed into elastic energy.
OC. Elastic energy is transformed into kinetic energy.
D. Potential energy is transformed into elastic energy.
Answers
Answer:
OA. Elastic energy is transformed into electrical energy.
Explanation:
pls hart and mark brainiest
Hypothetically, one of the major benefits of double fertilization in angiosperms is to:A) decrease the potential for mutation by insulating the embryo with other cells.
B) increase the number of fertilization events and offspring produced.
C) promote diversity in flower shape and color.
D) coordinate developmental timing between the embryo and its food stores.
E) emphasize embryonic survival by increasing embryo size.
Answers
the correct answer to the question is D) coordinate developmental timing between the embryo and its food stores.Double fertilization is a unique process that occurs only in angiosperms.
It involves the fusion of two sperm cells with the egg and the polar nuclei, leading to the formation of the zygote and the endosperm, respectively.
One of the major benefits of double fertilization is to coordinate developmental timing between the embryo and its food stores. This is because the endosperm, which is derived from the fusion of the polar nuclei and the sperm cell, serves as the primary source of nutrition for the developing embryo. By synchronizing the development of the embryo and the endosperm, double fertilization ensures that the embryo has access to the necessary nutrients at the right time, which is essential for its survival and growth. Moreover, double fertilization also helps to emphasize embryonic survival by increasing embryo size. The endosperm, which is formed as a result of double fertilization, is rich in nutrients, and it provides a continuous supply of nourishment to the embryo throughout its development. This ensures that the embryo grows to its full potential and has a greater chance of surviving and thriving. Double fertilization is a unique process that occurs only in angiosperms. Therefore, the correct answer to the question is D) coordinate developmental timing between the embryo and its food stores.
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