When molecules are very large or are being moved against their concentration gradient, energy is required to move molecules across a cell membrane. this type of movement is best described as:?
According to evolutionary theory, biologically based drives for every species are:
What should a nurse do if a patient has been exposed to sarin gas?
He medical term for a benign tumor composed of striated muscle is:
The medical term for a benign tumor composed of striated muscle is rhabdomyoma. Rhabdomyoma is the medical term for a benign tumor composed of striated muscle. It grows primarily from skeletal or striated muscle. Despite being benign, it may cause problems if in an inconvenient location.
Explanation:The medical term for a benign tumor composed of striated muscle is rhabdomyoma. Rhabdomyomas are rare and usually occur in the heart or skeletal muscles. They are typically noncancerous and do not spread to other parts of the body. Although they can cause symptoms if they grow large enough, most rhabdomyomas are detected incidentally during imaging or autopsies.
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why is an active site important
What is 90% of the biological stuff in soil?
The correct answer is that 90% of the biological stuff in soil is humus.
Humus is the dark, organic material in soils, formed by the decomposition of leaves and other plant material by soil microorganisms. It is a complex and stable mixture of carbon compounds that can persist in the soil for hundreds of years. Humus plays a crucial role in soil fertility and structure, improving the soil's ability to retain water and nutrients, and providing a habitat for beneficial microorganisms. It is estimated that humus can constitute up to 90% of the organic matter in soil, which is why it is often referred to as the ""lifeblood"" of fertile soil. The other options mentioned, such as bacteria, fungi, and protozoa, are also important components of soil life but do not make up the majority of the biological material in soil to the extent that humus does.
A circumscribed elevation of the skin containing a non-purulent fluid is known as a(n) ___?
List of all the subatomic particles their location and charge
The conversion of amino acids to carbohydrates is an example of
Compare the effects of disruptive, directional and stabilizing selection on the genetic makeup of a population answers
Which of the following statements is true?
A. Fission and fusion have identical reactions.
B. Fission breaks apart nuclei; fusion puts them together.
C. Fusion breaks apart nuclei; fission puts them together.
Answer:
The correct answer is option B.
Explanation:
Fission is a process in which nuclei breaks apart into two. It is also called as nuclear fission. It can be controlled or uncontrolled process in this process high amount of energy release.
Fusion is the process in which two nuclei fuse to put them together. It is also termed as nuclear fission which releases more energy than nuclear fission.
Thus, the correct answer is option C.
During what period of development is the pace of physical growth the slowest
I believe that this would be during the middle childhood stage. During this stage, growth is relatively the slowest, then starts to markedly increases on the onset of adolescence stage and then levels off in early adulthood.
Answer:
middle childhood
Although both br3- and i3- ions are known, the f3- ion has not been observed. explain.
The F3- ion has not been observed because fluorine has an extremely high electron affinity and does not form stable anions.
Fluorine is the most electronegative element, meaning it has an extremely high ability to attract shared electrons in chemical bonds. The electron affinity of fluorine is the highest among all elements, at 328 kJ/mol. This extremely high electron affinity makes it very difficult for fluorine to accept additional electrons to form anions, as it would require overcoming the strong repulsive forces between the incoming electrons and the tightly bound electrons already present in the fluorine atom.In contrast, bromine and iodine have lower electronegativities and electron affinities compared to fluorine, allowing them to form stable anions like Br3- and I3-. These heavier halogen elements can more readily accommodate the additional electrons in their larger atomic sizes and higher energy levels. However, the small size and tightly bound electrons of the fluorine atom make it virtually impossible for it to form a stable F3- ion under normal conditions.Explain how the water inside a cell helps to keep the cell’s temperature constant.
Which part of nucleotide determines if it is adenine,thymine,guanine,cytosine or uracil?
Describe the main components of a biological membrane by filling in the missing terms.
The main components of a biological membrane are the phospholipid bilayer, proteins, and carbohydrates.
The main components of a biological membrane are the phospholipid bilayer, proteins, and carbohydrates.
The phospholipid bilayer is made up of two layers of phospholipids, with hydrophobic fatty acid tails oriented towards the center and hydrophilic phosphate heads facing outward.
Proteins are scattered throughout the membrane, either inserted within it or attached to it. Some of these proteins span the membrane and serve as transporters for materials in and out of the cell.
Carbohydrates are attached to proteins and lipids on the outer surface of the membrane, forming complexes that help identify the cell to other cells.
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Cellular cytoplasm is primarily composed of what substance
Cellular cytoplasm is primarily composed of water, making up around 70-80% of its composition. The water provides a medium for molecular transport and chemical reactions within the cell.
Explanation:The primary substance that makes up cellular cytoplasm is water. Water accounts for about 70-80% of the cytoplasm's composition. The cytoplasm is a jelly-like substance where the cellular components, or 'organelles', reside. These other components include proteins, lipids, and salts. However, these serve more as crucial functional components rather than the main substance. The high water content facilitates many cell processes by providing a medium for molecular transport and chemical reactions within the cell.
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The work of eduard buchner and the discovery of enzymes laid the foundations for the field of
Eduard Buchner's and James Sumner's groundbreaking work with enzymes led to the establishment and rapid growth of the field of biochemistry, paving the way for numerous scientific breakthroughs in molecular biology, genetics, and medicine.
The work of Eduard Buchner and the discovery of enzymes laid the foundations for the field of biochemistry. Buchner's pioneering work showed that fermentation could occur outside living cells, which led to the realization that enzymes, the proteins acting as catalysts for biochemical reactions, could function independently in a living organism. In 1926, James Sumner's crystallization of urease marked the first time an enzyme was isolated, providing direct evidence that enzymes were indeed proteins. This discovery was initially met with skepticism but eventually led to Sumner receiving the Nobel Prize in Chemistry in 1946.
The enormous strides in biochemistry following these findings include the identification of thousands of enzymes and their substrates, tracing hundreds of metabolic pathways, and determining the structure of a myriad of proteins. Most notably, after the structure of DNA was elucidated in 1953, an explosion of knowledge concerning genetics and molecular biology ensued, including advancements like cloned animals, gene therapy, and enzyme immobilization for treating metabolic disorders. Biochemistry now intersects with fields such as medicine, informing the development of pharmaceutical drugs and providing diagnostic tools for diseases.
Movement of vesicles within the cell depends on what cellular structures
Final answer:
The movement of vesicles within the cell depends on motor proteins, microtubules, microfilaments, and the cytoskeleton.
Explanation:
The movement of vesicles within the cell depends on various cellular structures. One of the key structures involved in vesicle transport is the microtubules. Microtubules act as tracks for motor proteins, such as dynein and kinesin, which use ATP to transport vesicles along the microtubules.
Another important cellular structure involved in vesicle movement is the cytoskeleton. The cytoskeleton is a collection of protein filaments within the cell that includes microfilaments and microtubules. Motor proteins interact with these filaments and facilitate the movement of vesicles.
Overall, the movement of vesicles within the cell depends on the coordination between motor proteins, microtubules, microfilaments, and the cytoskeleton.
what produces 2 atp molecules and pyruvic acid?
The process of obtaining information by using the senses is called a/an
Perception is the process of obtaining and interpreting sensory information from our environment, assisting us in interacting with the world. This sensory information, obtained through perception, is integral to all our senses. The conversion of a stimulus into an electrical signal in the nervous system through this process is called sensory transduction.
Explanation:The process of obtaining information by using the senses is called Perception. Our sensory receptors are constantly gathering information from the environment. However, perception is the process which interprets that information and allows us to interact with the world. This sensory information we obtain through perception is organized, interpreted, and consciously experienced. The process that sensory information from a stimulus in the environment drives is referred to as 'bottom-up processing', while 'top-down processing' is driven by knowledge and expectation.
This process is instrumental in all of our senses: olfaction (smell), gustation (taste), equilibrium (balance and body position), vision, and hearing. Furthermore, our general senses or somatosensations also respond to stimuli like temperature, pain, pressure, and vibration. All these senses function to convert a stimulus into an electrical signal in the nervous system through a process called sensory transduction.
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The primary area of the cortex for visual processing is on the __________ lobe.
a. temporal
b. frontal
c. occipital
d. parietal
Answer:
A <3
Explanation:
Correct on Edge 2022
What would happen if you took an antacid prior to eating a hamburger?
Answer:
The digestion takes a long time or indigestion happens.
Explanation:
Our stomach secretes the HCL which helps in the digestion of different foodstuffs. It maintains the normal PH of the stomach. But sometimes the acid level in the stomach increases for which one needs antacids. Antacids are bases that react with the acids of the stomach and neutralises the acidic activity. Antacids contain magnesium hydroxide, aluminium hydroxides, sodium bicarbonate. These are all mild bases.
If the PH of the stomach is normal and one consumes antacid in the empty stomach, then it neutralises the acid of the stomach. The stomach environment acts as a buffer or alkaline. The carbohydrates, proteins, fats take a long time to digestion and also creates disturbance in the smooth. The hamburger has carbohydrates and proteins. Because no acid is there to breakdown this complex foodstuff, it leads to indigestion..
what would most likely happen to the carbon cycle if there were no more plants I earth
Forests and meadows are often cut down to make way for farms or large numbers of new homes. What are some of the elements of ecosystems that are lost when plants in these areas are removed?
Answer:
When the forests and meadows are cut for making the farms or large number of homes then the area must be home for some animals.
The animals that first used to live there because of forest or large number of trees was already there.
There can be biodiversity loss as there can be beneficial plant and animal species living at that place.
So, when that place will be cleaned the biodiversity at that place will be lost.
Final answer:
Forests and meadows provide important elements for ecosystems, including plant biodiversity, water regulation, and carbon storage. Cutting down these areas can disrupt these functions and have cascading effects on other organisms.
Explanation:
When forests and meadows are cut down to make way for farms or homes, several elements of ecosystems are lost. One of the main elements is plant biodiversity. Forests and meadows are home to a wide variety of plant species, and their removal reduces the overall diversity of plants in the area. This loss of plant biodiversity can have cascading effects on other organisms that rely on those plants for food and shelter.
Additionally, the removal of plants can disrupt the water cycle. Forests, in particular, play a crucial role in regulating the flow of water. They absorb rainwater, store it in their roots and soil, and release it slowly over time. When forests are cut down, this natural water regulation process is disrupted, leading to increased runoff and the potential for erosion and flooding.
Finally, the removal of plants can also impact the carbon cycle. Plants absorb carbon dioxide from the atmosphere during photosynthesis and store it in their biomass. When plants are removed through deforestation, this carbon is released back into the atmosphere, contributing to greenhouse gas emissions and climate change.
Identify all of the different observations used to support harry hess' theory of seafloor spreading.
While assessing the axillary temperature, the nurse raises the patient’s arm away from the torso. what is the rationale behind this action?
The glycocalyx is often referred to as the "cell coat," which is somewhat fuzzy and sticky with numerous cholesterol chains sticking out from the surface of the cell membrane.
The tiles below depict translation events during roughly two cycles of elongation. each cycle adds a leucine (leu) amino acid to the polypeptide. arrange the steps into their correct sequence. place the first step at the far left. do not overlap any tiles.
The sequence is: tRNA binds mRNA, peptide bond forms, ribosome translocates.
Initiation: The process begins with the small ribosomal subunit binding to the mRNA at the start codon (AUG), marking the initiation of translation. The initiator tRNA, carrying methionine (Met), also binds to the start codon.
Peptide bond formation (Cycle 1): The ribosome moves along the mRNA, and a tRNA carrying leucine (Leu) binds to the mRNA codon complementary to it.
A peptide bond forms between the methionine and leucine, connecting the two amino acids.
Translocation (Cycle 1): The ribosome advances along the mRNA by one codon, moving the tRNAs to the next binding sites: the P site (peptidyl site) and the A site (aminoacyl site).
The spent tRNA exits the ribosome from the E site (exit site).
Peptide bond formation (Cycle 2): Another tRNA carrying leucine (Leu) binds to the mRNA codon at the A site.
A peptide bond forms between the existing leucine and the newly arrived leucine.
Translocation (Cycle 2): The ribosome moves one codon forward again, shifting the tRNAs to the appropriate sites.
The tRNA that was in the P site moves to the E site and exits the ribosome, while the tRNA with the dipeptide moves to the P site.
This sequence repeats for each cycle of elongation, adding leucine amino acids and extending the polypeptide chain.
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Describe the three abiotic physical systems