Water diffusion through a hydrophobic cell membrane is made easier by membrane proteins called aquaporins. The correct answer is hydrophobic.
Plasma - membrane separates the inner and outer environment of the cell. It provides protection to the cell. It has hydrophobic region tails.
Some cell's plasma - membrane contain the water channels known s aquaporins by which the water molecules easily cross the membrane than the phospholipid membrane.
Aquaporins functions in transporting the water molecules in and out of the cell without disturbing the passage of the other ions.
So, the correct answer answer is hydrophobic.
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Final answer:
Water diffusion through cell membranes is facilitated by proteins called aquaporins that increase the efficiency of water transport via osmosis. These proteins are essential for maintaining cellular water balance and have been linked to various genetic diseases. Aquaporins are an example of facilitated diffusion and can also help transport other small molecules.
Explanation:
Water diffusion through a semi-permeable cell membrane is made easier by membrane proteins called aquaporins. Aquaporins are specialized channel proteins that facilitate the rapid transport of water across the cell membrane, contributing to the process known as osmosis. While water can passively diffuse through a membrane, aquaporins increase the rate at which water moves in response to a concentration gradient. This is an example of facilitated diffusion, and aquaporins can also help the transport of other small molecules and ions in addition to water.
Aquaporins are essential for maintaining the water balance within cells and are so significant that their discovery led to a Nobel Prize in Chemistry for Peter Agre. Mutations in aquaporin genes have been linked to various genetic diseases, emphasizing their importance in biology. These proteins are also allosterically regulated allowing cells to adjust water permeability according to their specific needs
During the follicular phase, granulosa cells secrete ________, which stimulates secretion of ________.
During the follicular phase, granulosa cells secrete estrogen, which stimulates secretion of gonadotropin-releasing hormone (GnRH), which then increases production of luteinizing hormone (LH). The follicular phase is the phase of the menstrual cycle, during which follicles in the ovary mature and it ends with ovulation.
During the follicular phase, granulosa cells secrete estrogen which stimulates the secretion of gonadotropins such as FSH and LH.
During the follicular phase, granulosa cells secrete estrogen, which stimulates the secretion of gonadotropins by the anterior pituitary gland. Specifically, Follicle-stimulating hormone (FSH) stimulates the follicles leading to their growth and secretion of estrogens. Granulosa and theca cells, upon receiving Luteinizing hormone (LH), produce the sex steroid hormone estradiol. This increase in estrogen levels results in a negative feedback loop that regulates the secretion of GnRH, FSH, and LH to optimize the chances of one dominant follicle reaching maturation and ovulating an egg cell.
Many clinicians diagnose disorders by using criteria listed in the
The development of specialized tissues and organs in a multicellular organism's embryo occurs as a result of
The development of specialized tissues and organs in a multicellular organism's embryo occurs as a result of the differentiation process.
What is Embryo?
An unborn baby at an early stage of development in the uterus is called an embryo. It is responsible for the development of simple to complex structures in the body of multicellular organisms.
Differentiation is a process of the generation of specialized cell types and organs in multicellular organisms. During this process, a cell ceases to divide and develops specialized structural elements and distinct functional properties.
Therefore, the development of specialized tissues and organs in a multicellular organism's embryo occurs as a result of the differentiation process.
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What cells are abundant within the large intestine and produce large amounts of lubricating mucus to aid in the passage of feces to the end of the digestive tract?
Why do you think it is so difficult for some people to accept the idea of continental drift?
one of the characteristics of retrotransposons is that
What would be a major sign of overtraining? change in appetite decrease performance loss of motivation and vigor disturbed sleep?
Answer: decrease performance
By overtraining, we mean doing more work than what is physically tolerated. Change in appetite, decrease performance, loss of motivation and vigor, and disturbed sleep are among the symptoms of overtraining. Among the four, the major sign of overtraining is decrease performance.
Two students are planning an experiment that will test how planaria (aquatic flatworms) respond to different environments. They will conduct two investigations—one that tests the worms’ responses to different water temperatures and one that tests the worms’ responses to different levels of acidity. Student 1 wants to buy two groups of flatworms and use a different group for each investigation. Student 2 thinks the same group of worms should be used for both investigations. Do you think either student’s method would give more accurate results? Why or why not? Explain your response.
Student 1’s methods would be more accurate, because the student would control more factors. Only one variable at a time (either temperature or acidity) would be tested on each group of worms. On the other hand, Student 2 is testing both factors on all the worms, which could make the results unclear.
Student 1 is taking different groups of worms, so his result will be more accurate, because the same group of worms may show the same or more related result.
What is a flatworm?Flatworms came under phylum platyhelminths.
They are unsegmented, bilateral, and soft bodied organism.
In the given experiment, the student 2 is taking the same group of flatworm, which may have some same characteristics and response to stimuli.
The result can be not ideal.
The student 1 is taking different groups of flatworm.
It will show correct and distinctive result.
Thus, student 1 will show accurate result.
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Will an increase in water temp damage aquarium plants
What conditions are necessary for viewing a rainbow in the sky?
What is the type of sand Sue McGrew prefers to use for her sculptures?
(5 letters)
Sue McGrew is a professional sand sculptor from Seattle. She makes amazing sand sculptures that last for few weeks or can vanish in one day. She creates sculpture using beach sand, water and same hand tools. Sue McGrew started making sculpture as hobby and then it became passion for her. She expresses her thought in sand.
earths biosphere is
If one species is split into two populations in two different places, natural selection may drive them to become two different species. how?
At chemical synapses, _________ primarily dictates the postsynaptic response.
A group of cells living together, where all cells can carry out all necessary functions of life.
identify the four principles of natural selection
The four principles of natural selection are variation, inheritance, high rate of population growth, and differential survival and reproduction. These principles explain the differences in traits among individuals within a species, the hereditary nature of some of these traits, overproduction of offspring, and the survival advantage of favorable traits.
Explanation:The four principles of natural selection are: Variation, Inheritance, High Rate of Population Growth, and Differential Survival and Reproduction.
The principle of Variation explains that within a population, individuals have diverse traits, these differences could be physical or behavioral. The principle of Inheritance explains that some of these traits are hereditary and can be passed on to the next generation.
The principle of a High Rate of Population Growth says that most species produce more offspring than can survive given the limited resources, and thus many offspring do not survive to reproductive age. The principle of Differential Survival and Reproduction suggests that those individuals with the most favorable traits are more likely to survive and reproduce, thereby passing on these traits to the next generation. This is often referred to as 'survival of the fittest'.
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People with central-body obesity are more likely to develop _____ than people who do not have excess fat in the midsection of their bodies.
a. beriberi
b. iron-deficiency anemia
c. elevated hdl cholesterol
d. type 2 diabetes
What is the cause of inflammation of the respiratory bronchioles, alveolar ducts, alveolar sacs, and alveoli of the lungs?
Answer:
There is not just one type of respiratory infection, but several infections that can reach the respiratory tract, some lighter and some more severe. Some of the most common causes of respiratory infections include:
Common Cold or Flu: It is an infection caused by viruses, causing cough, runny nose, sneezing and nasal obstruction. In influenza, there is infection with influenza viruses, which cause more intense symptoms such as body pain and fever.Sinusitis: is the infection caused in the bones of the face and can cause headache, facial pain, nasal discharge, cough and fever, caused by viruses, bacteria or fungi;Pharyngitis: There is infection of the throat region, causing local inflammation, as well as runny nose and cough, most often caused by viruses;Tonsillitis: pharyngitis may be accompanied by tonsil infections, causing intense inflammation, being more intense when there is infection by bacteria, which can produce pus in the region;Bronchitis: is the inflammation of the bronchi, already considered a low respiratory infection, since it already reaches the lungs. It causes coughing and shortness of breath and may have both allergic and infectious causes from viruses or bacteria.Pneumonia: It is the infection of the lungs and pulmonary alveoli, which can cause intense secretion, cough, shortness of breath and fever. It is usually caused by bacteria, it can also be caused by viruses or fungi;Tuberculosis: This is a type of lung infection caused by the bacterium of Koch bacillus, which causes chronic, gradual inflammation with cough, fever, weight loss and weakness, which can become severe if treatment is not done promptly.These infections can be classified as acute when they appear suddenly and rapidly worsen, or as chronic when they have a long lasting, sluggish course and difficult to treat, which often happens in certain cases of sinusitis, bronchitis or tuberculosis. , for example.
the __________ guards the entry of food into the stomach.
The cardiac sphincter which is
found at the upper part of the stomach guards the entry of food into the
stomach. Cardiac sphincter performs essential roles in digestion as it keeps
stomach acids and other stomach contents from pushing up and into the
esophagus.
A major oil spill has just happened in a near-shore environment. What prediction could be made as to why an oil spill in this area would be much more dangerous to marine life than one in the open ocean?
Answer:
An oil spill happening near the shore would be more dangerous because now not only is aquatic life in danger so are humans, in the sense of them swimming in the oil and possibly ingesting it. which would cause poisoning and could potentially lead to death.
Explanation:
Which of these organelles is present in both prokaryotic cells and eukaryotic cells?
Ribosomes are organelles present in both prokaryotic and eukaryotic cells. They are essential for protein synthesis. Unlike other organelles, ribosomes can function without a membrane, making them universal across all cell types.
The correct answer to the question about which organelle is present in both prokaryotic cells and eukaryotic cells is the ribosome. Ribosomes are essential for protein synthesis and are found in both prokaryotic and eukaryotic cells. While eukaryotic cells contain membrane-bound organelles like the nucleus and mitochondria, prokaryotic cells do not. However, both types of cells share the presence of ribosomes for translating mRNA into proteins.
Here are the important points to remember:
Nucleus: Only in eukaryotesMitochondrion: Only in eukaryotesVacuole: Typically in plant and fungal cells, not in prokaryotesRibosomes: Present in both prokaryotes and eukaryotesRibosomes are not surrounded by a membrane and function as the site of protein synthesis, essentially translating genetic information into functional proteins. This makes them a universal and crucial component of all living cells, regardless of whether they are prokaryotic or eukaryotic.
A small segment of dna on the template strand contains the base sequence cgt. if an mrna transcript is made that includes this sequence, what would be the anticodon on the trna that would bind to this corresponding mrna sequence
What protects your skin that is made of flattened skin cells?
Which drug is used as a rescue from toxicity of methotrexate?
Liquids that do not mix form into layers when they have __________ densities.
Answer:
different
Explanation:
What effect does skipping breakfast have on daily food intake patterns?
Research indicates that skipping breakfast increases food portion intake for the rest of the day. This is due to increased hunger pangs. This result to overeating in the other meals of the day, by especially craving for foods with higher energy densities. Eating breakfast is usually advisable for person tying to lose weight or avoid obesity.
The answer is resulting into the effect of overeating in different meals of the day.
Explanation:It is all because of the hunger increased pangs that will be responsible for skipping of the food meals. This will be resulting into the overeating of the meals at the high energy based densities.
He human eye is poorly suited to night vision, suffering impairments in __________.
The human eye is grief in damage of in-depth perception, color recognition, and peripheral vision. Judging speed and distance based on visual evidence is also more difficult in the dark. In addition, the darkness of night, and even the dimness of dusk and dawn.
Answer:
He human eye is poorly suited to night vision, suffering impairments in seeing the environment in low light situations.
Explanation:
In the eyes are the rods, the neurons responsible for the night vision. In total darkness, there is a need for at least 45 minutes to get the best vision, because the human eye is poorly adapted to night vision and is deficient in seeing in the dark. In the retina of the human eye there are two distinct regions, one responds by the central vision, the macula, and another peripheral vision.
Inside the macula, a region called fovea consists only of cones, which are neurons responsible for maximum vision. The cones do not work in low light conditions. However, around the fovea, there is a mixture of conese rods. This blend allows an intermediate view, which guarantees the ability to see in the penumbra.
The special type of cell division required to produce gametes is: fertilization meiosis capacitation mitosis
What would happen to owls if the grass was sprayed with an insecticide?
Keep in mind the owls eat the mice that eat the insects that eat the grass
Which of these choices is a drawback of the clean water act ?
A. It targets point sources pollution
B. It targets non point source pollution
C. It excludes agriculture runoff
D. It excludes lakes rivers and streams
Answer:
the answer is C
Explanation: