In the cold temperature, when energy is less saturated phospholipids are organised in a compacted manner. On the contrary, the curved structures of the unsaturated fatty acid makes it difficult for them to come close to each other.
The phospholipid bilayer with unsaturated fatty acid has more flexibility and liquidity due to the existence of curves in the carbon chain.
The fatty acid design of the saturated phospholipid is straight whereas the unsaturated fatty acid is curved at distinct places in the carbon chain.
Therefore, the unsaturated phospholipid nurture its liquidity even in cold temperatures.
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the way light hits organisms in the open ocean impacts how easily both predators and prey can see each other. having darker dorsal pigmentation and lighter ventral pigmentation is called what?
Having darker dorsal pigmentation and lighter ventral pigmentation is called countershading.
Many animals have countershading, which is characterised by a darker dorsal surface and a brighter ventral surface. Many people believe that the dorsoventral pigment polarity is an adaptive colouring for camouflage. In contrast, genetic colour polymorphism in terrestrial animals results in the frequent occurrence of noncountershaded (melanistic) morphs within a species.
Although it may also improve thermoregulation or provide UV protection, this dorsoventral pigment polarity is ecologically explained as an adaptation for camouflage through the concealment of self-shadow and/or background matching.
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Figure 2 shows some structures involved in the coordination of a reflex action.
Describe how the structures shown in Figure 2 help to coordinate a reflex action.
Answer:
You got this!
Determine which equation is false, based on the solution set S:{4}.
3t = 12
3m + 7 = 14
4(4c + 1) = 68
9 = 5p − 11
Explanation:
The function of hemoglobin is to carry ________ from the lungs throughout the body.
Answer:
Oxygen
Explanation:
what would happen if the food quality varied and the prey were not able to assimilate large quantities of defensive compounds?
It is possible to measure bottom-up links with flow webs, top-down linkages with ingestion/production webs, and trophic position using the secondary production of species in multi-species assemblages.
Who are the food consumers?The organisms that eat the producers are the principal consumers.. They are numerous and often modest in size. Herbivorous animals are the main consumers (vegetarians). The organisms known as secondary consumers are carnivores that consume the prime consumers.
What kind of connection exists between a food product and a product?The relationship between the consumer and the food product is fundamental to the growth of food products, so it is crucial that it be taken into account at every stage of the process of changing eating habits. Understanding the consumer/product interaction can be done on three different levels: as an individual product, as a meal, and as an eating pattern.
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Label the following diagram
The macromolecule that is shown in the image is an amino acid.
What is the macromolecule?We know that a macromolecule is the kind of molecule that is composed of many units. The units that are contained in the molecule are the ways that the molecule can be able to be combined so as to give a larger molecule.
In the case of the molecule that is shown in the image in the question, we can see that the compound must be an amino acid because it has the amino group and the carboxyl group as we can see here.
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- in making the crude protein extract from your e. coli pellets: what role did alumina play? what role did the centrifugation step after the addition of alumina accomplish? (2 points)
In making of crude protein extract from your e. coli pellets, alumina play an important role .
What happens in purification process?The purification procedure consists of two separation techniques: ammonium sulfate precipitation and affinity chromatography. In this purification, an extract of E. coli is first created from a frozen pellet of the E. coli mutant strain which produces b-galactosidase. The extract is made by by grinding them in a mortar and pestle with alumina.
After centrifuging, the supernatant is collected and used in the first fractionation step. The proteins in the crude cellular extract are fractionated by exploiting differences in protein solubility.
Ammonium sulfate is to increase the ionic strength of the extract solution. Precipitated proteins are removed from the solution by centrifuging them into a pellet. Fraction which has most b-galactosidase is fractionated by substrate affinity on a chromatography column to create other more fractions.
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Select the correct answer from each drop-down menu.
Compared to its surroundings, the concentration of solutes is low inside a cell. So, the cell is in a
v solution. A particular solute in
this cell uses energy for ts transport from the cell to its surroundings. This type of transport is called
As compared to its surroundings, the concentration of solutes is low inside a cell. So, the cell is in hypertonic solution. A particular solute in this cell uses energy for its transport from the cell to its surroundings. This type of transport is known as Active transport.
A hypertonic solution is the one where the concentration of solutes is more than the intracellular solute concentration. Therefore, the movement of water from inside of the cell to the outside. This causes the shrinkage of cell.
Active transport uses some form of energy to transport the molecules against their concentration gradient. This energy can be direct from ATP, called primary active transport. Or due to the coupled downhill transport of some other molecule, called secondary active transport.
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some toxic compounds are ingested and retained in the tissues. these pollutants pose special risks to humans and other organisms high on the food chain because of which process?
Organisn high on the fod chain because of Biomagnification process.
Biomagnification is the accumulation of a chemical through an organism from water and food publicity that consequences in a attention this is greater than might have resulted from water publicity only and accordingly extra than predicted from equilibrium.
Biomagnification occurs whilst poisonous chemical substances, like DDT, whose remains within the environment are consumed in a roundabout way by organisms thru meals. Whilst an organism within the higher meals chain consumes the decrease organism containing such chemicals, the chemicals can get gathered within the better organism.
Biomagnification is vital in toxicology because it offers data concerning the amount of pollutants in an area and might deliver clues to disruptions to populations and ecological groups.
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the ability of a virus or bacteriophage to specifically attach to particular types of host cells occurs through the interactions of the viral attachment protein with the host cell receptors. this binding determines
The binding of a virus or bacteriophage to attach to the host cells determines the host range.
Phages interact and attack a particular type of bacteria; they do not attack other types of bacteria or the cell lines of other organisms. The interactions between phages and their host cells have garnered a lot of attention because of how specifically they occur. The binding thus determines the host range tp attch to the host cell.
Bacteriophage is a virus that can infect bacterial cell. It enters the host cell through the lytic cycle. the virus in the bacterial cell can even kill the host cell or replicate even without killing it. The bacteriophage attaches to the bacterium using its long tail fibers, and after doing so, the virus inserts its genetic material into the host cell to start the reproduction process.
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7. how are the nadph and g3p molecules made during photosynthesis similar? 8. they are both end products of photosynthesis.
Both NADPH and glyceraldehyde-3-phosphate (G3P or GA3P) molecules use chemical bonds to store energy.
The process of photosynthesis is utilized by plants and other living things to change light energy into chemical energy that may then be released through cellular respiration to power the organism's activities.
The initial stage of photosynthesis results in the production of NADPH. The processes that take place during the second stage of photosynthesis are aided by it. For the many phases of the photosynthetic process to be completed, plant cells need light energy, water, and carbon dioxide.
Sunlight, carbon dioxide, and water are the three substrates needed for photosynthesis, which is a multi-step process. It generates glyceraldehyde-3-phosphate (G3P or GA3P), a simple carbohydrate with a high energy content that may be transformed into glucose, sucrose, or other sugar molecules, as well as oxygen.
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how long does it take for a fertilised human egg cell to develop into a fully formed baby?
Answer:40 weeks
Explanation:
Within 24 hours of fertilization, the zygote (two combined gametes) begins to divide into many cells. Within 8 weeks of pregnancy, the embryo is now a fetus, and the total development time from a zygote to a fully formed fetus is 40 weeks, typically.
one of the building blocks of a nucleic acid
i will mark the best ancer the brainlyest
e large number of antibodies that can be produced in a single individual is a result of: being able to produce unique antibodies from both the maternal and paternal alleles. secreting multiple antibodies that will be presented on the surface of other b cells. making a unique antibody from all other b cells by genomic rearrangement. making multiple unique anti
The large number of antibodies that can be produced in a single individual is a result of a single B cell: (3) making a unique antibody from all other B cells by genomic rearrangement.
Antibodies are the proteinaceous structures that form an essential part of the immune system. Each antibody is Y shaped structure that consists if 2 small light chains and 2 heavy chains. They are joined together by disulfide bonds. They are produced by the B cells.
B cells are also called the b lymphocytes that are a type of white blood cells. They provide humoral adaptive immunity to the body. The B cells are developed as well as matured inside the bone marrow.
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what environmental variables might affect the net rate of photosynthesis? list at least two. why do you think they would affect it? how do you predict they would affect it? 3. what features or variables of the plant leaves might affect the net rate of photosynthesis? how and why? 4. could the way you perform the procedure affect the outcome? of the outcome changes, does it mean the net rate of photosynthesis has changed? why do you think that?
Photosynthesis is one of the most process in the plants and there are large number of factors like sunlight, oxygen, CO2, water etc. that affect the rate of photosynthesis.
1. the plant's exposure to temperature, carbon dioxide levels, and light levels. Because photons of light energy are required to excite the electrons in the thylakoid membrane, these parameters will have an impact on the photosynthesis process. In the absence of sufficient CO2, Rubisco will adhere O2 to RuBP rather than CO2.
3. The amount of water in the plant is a variable that might have an impact on the net rate of photosynthesis. The stomata are closed in plants with high water content, whereas they are open in plants with low water content. The stomata enable carbon dioxide to enter plant cells, ultimately performing photosynthesis.
4. Yes, while using a different kind of plant during the performance, the technique could modify the final result. The rate of photosynthesis may have sped up or slowed down if the leaves didn't drop to the bottom after being placed inside the container. I think this because, in contrast to the leaves that had sunk, the leaves that were suspended in the middle of the container had an advantage when ascending to the top.
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Is this a scientific model? Use complete sentences to explain why or why not.
The diagram shown below is a water cycle diagram and it is scientific model because it represents a system of ideas, events or processes.
What is a scientific model?A scientific model is described as a physical and/or mathematical and/or conceptual representation of a system of ideas, events or processes.
Scientific models are very important as they are used to explain and predict the behavior of real objects or systems and are used in a variety of scientific disciplines, ranging from physics and chemistry to ecology and the Earth sciences.
The water cycle in its own modelling describes how water evaporates from the surface of the earth, rises into the atmosphere, cools and condenses into rain or snow in clouds, and falls again to the surface as precipitation.
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the primary function of this vertebrate system is the maintenance and retention of water. multiple choice question. respiratory digestive urinary circulatory
The primary function of this vertebrate urinary system is the maintenance and retention of water. Thus the correct answer is option (C) Urinary system.
The vertebrate kidney is a component of numerous interconnected systems that preserve homeostasis. The primary organ that controls the volume and makeup of the internal fluid environment is the kidney, which plays a significant part in this regulatory council for the vertebrate urinary system. The elimination of metabolic wastes is incidental to the vertebrate kidney's regulating role, despite the fact that we frequently refer to it as an excretory organ. While the structure of the kidneys varies slightly among the many groups of vertebrates, the nephron serves as the primary functional unit in all of them, and urine is produced by three distinct physiological processes: filtration, reabsorption, and secretion.
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a mitotic daughter cell has just been formed and contains 12 non-replicated chromosomes. how many replicated chromosomes were contained in the parent cell before the two daughter cells were formed?
During mitosis, the number of replicated chromosomes contained in the parent cell before two daughter cells are formed is still 12 chromosomes.
The number of chromosomes does not change during mitosis. The phase in which the cell prepares for division is called interphase. If a cell has 12 chromosomes during interphase, the number of chromosomes in each daughter cell remains 12 even after mitosis ends.
The characteristics of mitosis are:Cleavage takes place once.The number of daughter cells produced is two.The number of chromosomes in the daughter cells is the same as the number of chromosomes in the parent cell, which is 2n (diploid).The properties of the daughter cells are the same as those of the parent.Occurs in body cells (somatic cells) for example in embryonic tissue, including root tips, stem tips, and cambium circles.The mitotic division aims to multiply cells such as the growth or repair of damaged cells.Learn more about mitosis here https://brainly.com/question/23750975
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which of the following observations tells a scientist that the organism she is observing is a eukaryote? group of answer choices the organism has ribosomes the organism has a membrane bound nucleus the organism is unicellular the organism has a cell membrane
Answer: organism has a membrane bound nucleus.
Explanation:
Eukaryotic cells have a nucleus which has nuclear membrane & in prokaryotic cells DNA is not contained in a membrane bound nucleus it is simply in a region of the cell called the nucleoid.
The function of hemoglobin is to carry ________ from the lungs throughout the body.
Answer:
Oxygen
Explanation:
It carries Oxygen in your red blood cells to other things in your body such as your organs and tissue, then it goes back to your lungs. If that makes sense to you. Hope this helps. :)))
which of the following correctly describes myoglobin's special function in muscle tissue? a. synthesizes atp b. breaks down glycogen; c. synthesizes creatine d. produces action potentials e. acts as a reservoir for oxygen
The special function of myoglobin in muscle tissue is e. acts as a reservoir for oxygen.
In the field of biology, myoglobin can be described as a protein whose primary function is to store and then supply oxygen to the muscle cells when in need.
As we know, the muscle cells of the body require more oxygen when going through vigorous exercise activities. Hence, to meet the requirements of oxygen for muscle cells, myoglobin acts as a reservoir for oxygen and supplies it to the muscle cells of the body when in need.
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the result of a particular experiment is called a(n) a. observation. b. conditional probability. c. event. d. outcome.\
An outcome is the conclusion of an experiment. (Select d)
What kind of observation would this be?A straightforward observation would be to watch an apple fall from a tree. Another finding was that fish only frequent a particular section of the stream inside the morning. The scent of rotting rubbish is another example of observation.
Why is observation so important?Our ability to see things, events, attitudes, and occurrences helps us learn about them via one or possibly several senses. Because it serves as the foundation for efficient communication, the ability to see and understand an outside world is essential.
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which cells of the pancrease secrete insulin? which cells secrete glucagon? what are the effector cells for each of these hormones?
The pancreatic β-cell plays a key role in glucose homeostasis by using secreting insulin, the simplest hormone that is able to lower blood glucose awareness.
Glucagon is a peptide hormone secreted from the alpha cells of the pancreatic islets of Langerhans.
Even as the beta cell produces insulin, the most effective blood glucose-reducing hormone of the body, the alpha cell releases glucagon, which elevates blood glucose. under physiological situations, these mobile kinds have an effect on each other in a paracrine manner.
There are 3 basic styles of hormones: lipid-derived, amino acid-derived, and peptide. Lipid-derived hormones are structurally much like ldl cholesterol and include steroid hormones which include estradiol and testosterone.
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1. how fast was the population of america growing and what were the sources of its population growth?
The population of America is growing very fast. Increasing immigration and high fertility were both contributing to America's population growth. The birth rate, death rate, and migration are the three variables that affect population change.
Cities arose as a result of the enormous workforces needed by industrial companies and the necessity for housing for both the employees' families and themselves. Millions of immigrants came to the United States in search of employment and a better life in factories and cities.
Death rates have dropped as a result of technology, medicine, and diet. Rapid population growth is the term used to describe the aggressive population growth brought on by higher birth rates and lower mortality rates. The availability of food, water, energy, and trustworthy medical care, as well as industrialisation, are other causes.
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what is the effect of increased parasympathetic activity and decreased sympathetic activity on both heart rate and blood pressure?
Blood pressure, breathing, heart rate, and sweating all drop as digestion increases.
The hormone acetylcholine is released by the parasympathetic nervous (PNS) to slow the heart rate. Your heart rate may briefly increase due to stress, coffee, and excitement, but it may momentarily decrease due to meditation or deep, steady breathing. Patients with hypertension exhibit decreased parasympathetic activity in contrast to sympathetic stimulation activity, indicating an imbalance between the sympathetic and parasympathetic nervous systems [39,40,41]. In diabetic individuals with impaired parasympathetic regulation, blood pressure, hypertension is more common. Construction of pupils is the result of parasympathetic nervous system stimulation. reduced blood pressure and heart rate. The sympathetic branch is stimulated, which facilitates function and raises heart rate.
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homologous structures multiple choice have fully divergent functions. are only shared by organisms of the same genus. are also called analogous structures. are often shared by organisms in the same line of descent. have identical functions.
Homologous structures are : d)often shared by organisms in the same line of descent. Hence d) is correct option.
What are homologous structures?Similar physical features in organisms that share a common ancestor but features are completely different are called Homologous structures. Example for homologous structures are the limbs of humans, cats, whales, and bats.
Homologous structures are body parts of organisms that have same anatomical features, therefore, indicating a common ancestor or developmental origin. They can share the same trait but they do not have the same function. Some examples are: the forelimbs of the bats and of humans are homologous structures.
Homologies are traits present in more than two organisms that are inherited from the common ancestor of those particular organisms.
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occasionally, a bismuth preparation is added to the treatment regimen for duodenal ulcers. what are bismuth's effects against h. pylori organisms.
H. pylori is resistant to bismuth's antimicrobial properties.
What kind of infection is H. pylori?In addition to ulcers, H pylori bacteria can also cause persistent stomach inflammation (gastritis) or damage to the upper part of the small intestine (duodenitis). A uncommon form of stomach lymphoma or stomach cancer can also occasionally develop as a result of H pylori.
How do you feel after having H. pylori?Only 20% of persons with the infection exhibit symptoms. A dull or scorching stomach ache, unintentional weight loss, and bloody vomiting are all symptoms. Antibiotic and proton pump inhibitor regimens are frequently used to treat ulcers brought on by H. pylori.
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specific gravity indicates: a) the amount of blood in the urine b) the amount of water in the urine c) the amount of dissolved substances in the urine d) the amount of acid in the urine
Specific gravity indicates the amount of dissolved substances in the urine.
What is urine?As it travels through the nephrons and down the renal tubules of the kidney, urea, along with water and other waste products, creates the urine. both ureters. From the kidneys to the bladder, urine travels through these tiny tubes. The excretory organs remove some additional, frequently poisonous compounds from the circulatory fluids and expel them from the body through urine, which is a liquid or semisolid solution of metabolic wastes. Urine often reflects an organism's needs for water in terms of composition.
What is specific gravity?The difference between an object's density and that of a standard substance is its specific gravity. Depending on its value, the specific gravity might indicate whether an object will float or sink in our reference substance. A laboratory test called urine specific gravity reveals the concentration of all chemical particles in the urine.
Thus from above conclusion we can say that specific gravity indicates the amount of dissolved substances in the urine.
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Passive transport, such as osmosis and facilitated diffusion, ________
require energy. (does/does not)
Answer:
I think the answer (does not).
Explanation:
I hope this helps.
Here´s more to the answer:
Passive transport is a naturally occurring phenomenon and does not require the cell to expend energy to accomplish the movement.
What is the primary advantage of using phase comparison in an interference microscope?.
Using the structures of interference microscope, we got that phase comparison can be used to view specimen that is unstained.
Although all optical microscopes in strict sense create images by diffraction, interference microscopy creates images using difference between an interfering beam unmodified by specimen and an otherwise identical beam that illuminates it. A beam splitter divide light into two paths, one of which passes through specimen while the other bypasses it. When the two beams are combined, resulting interference between them reveals the structure of specimen. The first successful system, was actually invented by British microscopist Francis Smith and French physicist Maurice Françon in year 1947, used quartz lenses to produce reference and images-forming beams that were perpendicularly polarized.
The other advantages of using phase comparison in an interference microscope are:
Can be used to study marine organisms due to its dark space.Can be used to study live bacteriumHence, the reason of using phase comparison in an interference microscope is that with the help of this we can view specimen that is unstained.
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using your knowledge of genetics, study the pedigree. how certainly does this pedigree rule out the possibility that the woolly hair trait is recessive? for instance, if the woolly hair trait were autosomal recessive, then each affected individual would have to be homozygous. answer the question: is there any instance in this pedigree?
No there is no chance that an affected individual could not possibly be homozygous and thus the disease may be autosomal recessive.
The majority of cases of keratoderma with woolly hair are inherited in an autosomal recessive manner, meaning that each cell's two copies of the affected gene are mutated. Woolly Hair is a rare congenital abnormality of the scalp hair that affects non-black people and manifests as tightly coiled hair in a specific area of the scalp or covering the entire side. Woolly hair that is isolated or localised is typically benign and unrelated to other conditions or complications.
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