The polar head of a phospholipid is made of phosphate molecules.
What are function of phospholipid ?A phospholipid is a large class of fatlike, phosphorus-containing biomolecule which are critical structural and metabolic component of living cell.
It is made up of a phosphate group, two alcohols, and one or two fatty acids.
One end has a phosphate group and one alcohol called as polar end or hydrophilic end has electric charge and attracts water.
Another end of fatty acids are non polar or hydrophobic and water-insoluble. so Phospholipids are amphipathic nature.
These are up two types such as glycerophospholipids are called as membrane phospholipid, origin is glycerol.
Sphingo-phospholipids are the components of myelin and can be present in nervous system. It's composed of sphingosine and alcohol.
It maintain membrane permeability and fat absorption from the gut.
It prevent fat formation in the liver and crucial for transfer and elimination of cholesterol from cells.
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A specimen collection helps a scientist do an experiment by
Specimen collection is the process of obtaining tissue or fluids for laboratory analysis or near-patient testing.
A specimen collection helps a scientist do an experiment by assembling a large number of samples for comparison. A poorly collected specimen may lead to failure in isolating the causative organism(s) and/or result in the recovery of contaminating organisms.
Answer:
A specimen collection helps a scientist do an experiment by: Providing access to objects that are hard to find.
How can white blood cells tell the difference between body cells and pathogens?
Weather conditions would be LEAST likely to affect supply in
A.farming
B. fishing
C. technology
D. transportation
Answer:
c
Explanation:
TECHNOLOGY, weather can only affect supply if the components got damaged.
Due to increasing concentrations of ddt as one moves up the food chain, cormorants and mergansers have about ______ times as much ddt residue as the background concentration in the water.
Biomagnification leads to a 400-fold increase in the concentration of DDT in birds like cormorants and mergansers compared to the background concentration in the water.
The question addresses the phenomenon of biomagnification, which refers to the increasing concentration of a substance, such as DDT, in the tissues of organisms at successive levels in a food chain. This process occurs because DDT is not metabolized or excreted efficiently by organisms, and therefore accumulates in their bodies, particularly in fat tissue. As smaller organisms that contain DDT are eaten by larger ones, the concentration increases.
Hence, apex predators and birds like cormorants and mergansers, which are higher up on the food chain, can have concentrations of DDT that are significantly higher than the background concentration in the water. In the case of birds feeding on fish that have accumulated DDT, it has been documented that they can have a 400-fold increase in the concentration of DDT.
When Carter first moved into his neighborhood, he noticed hundreds of frogs on the roads after a rain storm. Lately, Carter has seen less than four or five frogs on his five-minute drive through the neighborhood. Which of the recent events is a reasonable conclusion based on Carter's observations? A drought has impacted the population size of the frogs. A new housing development has led to extinction of the frogs. The beginning of the winter has created temperatures too cold for the frogs. Increasingly warm temperatures have dried the skin of the frogs leading to death.
Answer: A drought has impacted the population size of the frogs.
Explanation:
The frogs are the amphibians who require both water and terrestrial habitats to survive and reproduce. The rainwater accumulates over the terrestrial regions can provide an ideal environment for the survival of the frogs.
According to the given situation, Carter noticed hundreds of frogs on the road after rain storm as the road environment was suitable for the survival of the frogs. But later on he observed less than four or five frogs. This may be because of the fact that the road might not be left with water which could be probably due to drought (a drought is a condition where a region does not receive appropriate amounts of rainfall which leads to the dry and hot environment).
A wedge-capped capuchin is a species of South American monkeys. They live in groups that typically have one male and several females. Sometimes young males live in a group too in order to help take care of the young. Most groups have a dominant female that often displays aggression toward other females and young males in the group. Which best describes the group behavior of these monkeys? territorial imperative social hierarchy migratory hibernating
Answer:
The correct answer would be the social hierarchy.
Explanation:
A basic aspect of social organization that is decided by display behavior or fighting and leads to a ranking system or order of place of the animals in a group is known as social hierarchy.
Dominance type of social hierarchies often decided best or early access to mating, social interactions, or food within animal groups.
Wedge-capped capuchin monkeys show this type of social hierarchy in their pack or group where dominant females display aggression towards other young males and females.
Thus, the correct answer is the social hierarchy.
Myod promotes muscle cell development by __________.
In a population with logistic growth, what happens when carrying capacity is exceeded
the answer you're looking for is OVERPOPULATION. Overpopulation is when the carrying capacity of the land is exceeded. I hope this answer helps u out on your test and have a great day.
Which male accessory structure is inferior to the urinary bladder and surrounds the superior portion of the male urethra?
How might damaged alveoli affect the oxygen level in the blood?
The Clean Air Act would be a reason for the Environmental Protection Agency (EPA) to regulate car emissions. Please select the best answer from the choices provided T F
The EPA is an independent agency formed for environmental protection. Hence the statement The Clean Air Act would be a reason for the Environmental Protection Agency (EPA) to regulate car emissions is true.
Car emissions are very harmful for all the living organisms in an environment.
Name 4 ways the human body protects itself
All cells come from preexisting cells. a cell divides its dna in a process known as ____________ and its cytoplasmic contents in a process known as ____________ , producing two new daughter cells while all life begins as a single cell, the human body is not just one cell type. cells that can divide without becoming a specific cell type (i.e. skin cells) are known as ____________ . when stem cells undergo mitosis and divide, they produce two cells. one cell remains a stem cell and the other is a partially specialized cell known as a ____________ cell. cells undergo a process of specialization or determination called ____________ to become neurons, muscle cells, or skin cells. stem cells are the source of all different cell types.
All cells come from preexisting cells. A cell divides its DNA in a process known as mitosis and its cytoplasmic contents in a process known as cytokinesis, producing two new daughter cells while all life begins as a single cell, the human body is not just one cell type. Cells that can divide without becoming a specific cell type (i.e. skin cells) are known as stem cells. When stem cells undergo mitosis and divide, they produce two cells. One cell remains a stem cell and the other is a partially specialized cell known as a progenitor cell. Cells undergo a process of specialization or determination called differentiation to become neurons, muscle cells, or skin cells. Stem cells are the source of all different cell types.
Carbohydrate loading maximizes the storage in skeletal muscles of what compound?
Producers rely on ____________ to create chemical energy and consumers rely on ____________ to release chemical energy.
Which term best describes traits that are found on the x chromosome but not on the y chromosome?
Final answer:
X-linked traits are determined by genes on the X chromosome and are not present on the Y chromosome, leading to different inheritance patterns in males and females.
Explanation:
The term that best describes traits that are found on the X chromosome but not on the Y chromosome is X-linked traits. These traits are controlled by genes that are located only on the X chromosome. In human females, who have two X chromosomes (XX), these traits have a higher likelihood of being expressed. In contrast, human males, who have only one X chromosome paired with a Y chromosome (XY), can express these traits if the gene is present on their single X chromosome, leading to distinctive patterns of inheritance for X-linked traits.
X-linked traits can have significant implications for the expression of certain conditions, such as color blindness and hemophilia, which are more commonly observed in males due to the presence of only one X chromosome. The absence of a corresponding gene on the Y chromosome means that if a male inherits an X-linked recessive trait, he will express that trait since there's no dominant allele on the Y chromosome to mask the effect of the recessive allele on the X chromosome.
which kind of tumor grows in only one part of the body?
a. malignant
b. somatic
c. benign
d. signal
In the myplate icon, which category is shown as a separate food group?
Which part of the gastrointestinal tract does gastric bypass surgery block off?
Answer:
A colostomy is made by connecting the colon to the outside of the abdomen, bypassing the lower gastrointestinal tract.
A colectomy is a surgery that removes or excises a portion of the colon.
Explanation:
Cartilage, found in the ears and nose, is a rubbery type of _____ tissue. studysoup.com
Answer: The correct answer is Connective
Which two factors are mostly responsible for recent rapid globalization?
Advances in transportation and communication, alongside reduced trade barriers, have been key factors contributing to rapid globalization.
Advances in transportation and communication have significantly reduced the costs of moving goods globally, particularly with the development of shipping containerization in 1956. This innovation lowered transportation costs by up to 90% and facilitated the movement of goods worldwide. Secondly, the reduction of trade barriers between countries has played a crucial role in the rapid globalization process, making it easier for goods and services to flow across borders.
What does the order of DNA bases have to do with the traits of an individual?
In garden peas, tall is dominant to short. if two heterozygous tall plants are crossed, what proportion of the tall progeny will be homozygous dominant?
Fluorine has an atomic number of 9. Then n=1 energy level has two elections, and the n=2 energy level has seven electrons. Fluorine’s valence is ___.
A) +2
B) -2
C) +1
D) -1
Medical transcription is the process of transforming medical descriptions of healthcare services into numeric or alphanumeric codes
a. True
b. False
a. True
b. False: skinfold measurements can be used to estimate body fat percentage based on the assumption that the amount of subcutaneous fat is proportional to the total amount of body fat.
Skinfold measurements can accurately estimate a person's body fat percentage by assuming the amount of subcutaneous fat (under the skin) is proportional to the total body fat. Calipers measure skinfold thickness at several body locations, and these measurements are used in equations to estimate body fat.
Explanation:The statement is indeed true. Skinfold measurements are widely used to estimate a person's body fat percentage. This technique assumes that the amount of fat stored subcutaneously, or directly under the skin, reflects the total amount of body fat. These measurements aid in the calculation of body fat composition, which is crucial in determining individual health status or fitness level. Special calipers are used to measure the thickness of the skinfolds at specific sites on the body. These values are then inputted into an equation to estimate body fat percentage.
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What is the advantage of having muscles that run at different angles in the stomach?
The stomach has three layers of smooth muscle fibers run in three different angles. These layers are critical in giving the stomach the capability to mix, well, ingested food as it is mixed with enzymes and hydrochloric acid. This is important because smoothe muscles can only contract in one direction hence the layers give multidirectional movements of the stomach hence goof mixing and better digestion.
Many biologists argue that the euglenoids should be classified as an animal-like protist rather than a plantlike protist
Euglenoids are a group of unicellular organisms with both animal-like and plant-like traits, leading to classification challenges. Taxonomy and phylogeny based on molecular genetics and genome analysis have led to a restructuring of the kingdom Protista into multiple monophyletic supergroups, taking into account convergent evolution.
The question addresses the classification of euglenoids, which are unicellular organisms with both animal-like and plant-like characteristics. This classification ambiguity arises because euglenoids exhibit mobility and some are heterotrophic, which are traits associated with animals, leading zoologists to sometimes refer to them as 'Euglenozoa'. On the other hand, some euglenoids are capable of photosynthesis, a plant-like trait, causing botanists to call them 'Euglenophyta'. The taxonomy and phylogeny of euglenoids, and protists in general, have been reshaped with the advent of molecular genetics and genome analysis. These analyses have revealed deep evolutionary branches within the domain Eukaryota, dividing it into several monophyletic supergroups. The classification continues to evolve as new genetic information is discovered, making clear that morphologically similar protists may not necessarily share a recent common ancestor—a concept known as convergent evolution.
An example of antagonistic hormones controlling homeostasis is _____. an example of antagonistic hormones controlling homeostasis is _____. epinephrine and norepinephrine in fight-or-flight responses thyroxine and parathyroid hormone in calcium balance progestins and estrogens in sexual differentiation insulin and glucagon in glucose metabolism
Enzymes are proteins that act as _____ for biological reactions.
The answer is catalysts. Catalysts speed up the rate of a reaction without getting consumed in the process. Catalysts, in this case, enzymes act by reducing the activation energy or changing the reaction mechanism (such as foregoing some transition states). A popular enzyme is a carbonic anhydrase that catalyzes the formation of carbonic acid in the blood plasma (from carbon dioxide and water), a critical function in regulating blood pH.