Carbon, hydrogen, oxygen, and nitrogen make up the bulk of living matter.
Explanation:The four elements that make up the bulk of living matter are:Carbon (C): It is the backbone of organic molecules like carbohydrates, lipids, proteins, and nucleic acids.Hydrogen (H): It is found in water and many organic compounds.Oxygen (O): It is present in water, carbohydrates, lipids, and proteins.Nitrogen (N): It is a key element in amino acids, which are the building blocks of proteins.Learn more about elements in living matter here:https://brainly.com/question/34786608
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The four elements that make up most of the mass in living organisms are oxygen, carbon, hydrogen, and nitrogen. They form diverse molecular species that enable the structures and functions of living organisms.
Explanation:The four elements that make up the bulk of living matter are oxygen (O), carbon (C), hydrogen (H), and nitrogen (N). These four elements common to all living organisms consist of more than 95 percent of the body's mass. Carbon, being able to form four chemical bonds, and nitrogen, forming three, have unique structures that allow them to produce a vast number of diverse molecular species, necessary to form the structures and enable the functions of living organisms.
Even the earth's crust and atmosphere, having unique proportions of these elements contribute to the existence of life. Despite differences in abundance, all elements obey the same chemical and physical laws, whether they are a part of the living or non-living world.
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tRNA is to translate mRNA sequence into amino acid sequence.
Which choice is an example of a material that is transported across cell membranes by active transport?
Answer:
kfc
Explanation:
ajkdcidqojvawA
Alcohol suppresses the release of ____, the brain’s main excitatory transmitter.
The nurse is using a preoperative checklist to assist in preparing a patient on the day of surgery. what will the checklist include? (select all that apply.
Answer:
medical terminology, record-keeping skills, preoperative patient care
B,C,D
Explanation:
Edge 2022
The stress glucocorticoid that is produced in humans is called:
a. adrenalin
b. estrogen
c. cortisol
d. repression
What is the shape of the trash compactor life cycle?
Most trash compactors need bags that are round or rectangular. The bag may be paper or plastic. Like dishwashers, most trash compactors fit into kitchen cabinets.
Why are trash compactors not popular?A trash compactor is a handy piece of household equipment that can reduce the amount of space in your home that is required for trash cans by compressing the waste you throw out and reducing its volume. During the process of compacting, the noise made by the compactor is present, but it quickly disappears.
Between 30 and 38 cm (or 12 to 15 inches) in width is the typical range for the width of a conventional trash compactor. They stand between 34 1/8 and 35 inches tall, which is equivalent to 87 and 89 centimeters. In addition, the depths of these pools range anywhere from 24 to 25 inches (or 61 to 64 centimeters).
Customers thought it took up an excessive space of room, whether it was in the cupboard or on the ground. In addition to this, it left customers with rigid, compact, rectangular-shaped packages that were incompatible with the round garbage cans they used.
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Bout how many children have become orphaned in the world due to hiv/aids
The number of children who became orphans because of HIV or AIDS was estimated to be around 13 million in number. United Nations defines an orphan as a child who has either lost one or both parents. As of 2015, an estimation of 13.4 million children and adolescents in the world became orphans due to HIV/ AIDS.
Which organic molecule is responsible for the insulation of internal organs against shock?
What characteristic allowed the same ecomorphs to be produced on all four islands even though the original species were different on each island?
The characteristic that allowed the same ecomorphs to be produced on all four islands even though the original species were different on each island is called identical selective pressures.
To add, selective pressure is any phenomena which alters the behavior and fitness of living organisms within a given environment.
Answer:
The right answer to this question is: Selective pressure.
Explanation:
When learning about Darwin's theory, the evolution, we learned that organisms can adapt themselves with time due to the pressure of the environment and mutations. On these four islands, what could have happened is that the same selective pressure happened on four of them, one pressure that can be mentioned and it's a very big problem nowadays is global warming. If this species is sensitive to the global warming problem, it'll probably die or adapt itself on the next generations, having the possibility of developing the same ecomorphs on all four islands.
After the three days, what happens in each test tube? why? what is necessary for rust to occur? how does this activity demonstrate the fate of oxygen in earthâs early atmosphere, when iron in the oceans was still removing oxygen from the air?
Rusting requires iron, oxygen, and water, and results in the formation of iron oxides. The early Earth's iron-rich oceans removed oxygen from the atmosphere. Experiments with test tubes and iron nails can demonstrate the principles of rust formation and relate to the early atmospheric conditions.
Explanation:Rusting is a form of corrosion that particularly affects iron and its alloys. This process occurs when iron is exposed to oxygen and water, leading to the formation of iron oxides, commonly called rust, represented by the chemical formula Fe2O3·xH2O. The experiment in the question likely involves test tubes with iron nails or similar iron-containing material that exhibits rust formation when exposed to oxygen and moisture over the course of three days.
To form rust, three essential components are necessary: iron, oxygen, and water. The presence of electrolytes, such as salt in water, can accelerate the process. During the early Earth's atmosphere, lower levels of dissolved oxygen in oceans allowed for more soluble iron ions (Fe2+) available in water. This abundance of Fe2+ would have been oxidized as oxygen levels rose, aiding in the removal of oxygen from the atmosphere until it reached saturation, allowing for the increment in atmospheric oxygen that we observe today. This process mirrors the removal of oxygen as seen in the test tubes where iron in the presence of oxygen and moisture rusts, demonstrating how early Earth's oceans could have acted as a sink for the free oxygen before the levels in the atmosphere increased significantly.
Once absorbed, monosaccharides are first carried in the blood away from the small intestine and to the _____.
While studying egyptian anthropology, lino was surprised to learn that zinc deficiency was common among certain middle eastern populations, even though their diet was high in zinc-containing foods. what caused the zinc deficiency in these populations?
A symporter will transport _____ across the cell membrane.
A symporter is a protein that transports two or more ions or molecules across the cell membrane in the same direction, such as the sodium-glucose symporter in the human intestine.
Explanation:A symporter is a type of protein that is found in the cell membrane. It functions to transport two or more ions or molecules across the cell membrane in the same direction.
For example, the sodium-glucose symporter in the human intestine allows both sodium ions and glucose molecules to enter the cell together, taking advantage of the concentration gradient of the sodium.
This process involves a complex interaction between the membrane protein and the molecules or ions to be transported. The energy needed to drive this process usually comes from the electrochemical gradient created by pumping ions out of the cell.
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In biology, a symporter transports two different ions or molecules across the cell membrane in the same direction, with an example being the sodium-glucose symporter.
Explanation:A symporter will transport two different molecules or ions across the cell membrane, both in the same direction. An example of this is the sodium-glucose symporter which uses sodium ions to 'pull' glucose molecules into the cell. The cell stores glucose for energy and is typically at a higher concentration inside than outside the cell.
Thanks to the sodium-potassium pump action, sodium ions will diffuse into the cell easily once the symporter is opened. The flood of sodium ions through the symporter thus powers the glucose to move through the symporter and into the cell, countering its concentration gradient.
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How much energy is lost in the movement from one trophic level to the next?
The survival of organisms best suited to a particular environment is known as
The survival of organisms best suited to a particular environment is known as Natural selection. This can be explained through the theory of survival of the fittest.
What is Natural selection?Natural selection is the process through which the populations of living organisms adapt and change according to the surrounding environment. Individuals in a population are naturally variable, meaning that they are all different from each other in some ways. This variation means that some individuals have traits which are better suited to the environment than the others.
For Charles Darwin, natural selection is a drawn-out, complex process which involved multiple interconnected causes. Natural selection requires variations in a population of organisms. For the process to work, at least some of the variations in a population must be heritable and passed on to the organisms' descendants in some way.
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Which of the following describes someone who is heterosexual? Check all that apply.
uncertain about biological sex
referred to as straight
attracted to opposite sex
uncertain about sexual orientation
engaging in new romantic relationships with the same sex
has sexual orientation toward the opposite of own biological sex
Where do the ducts of the submandibular salivary glands empty into the oral cavity?
What is significant about areas in the dna that contain repeated segments?
Repetitive sequences in DNA are important for individual identification via DNA fingerprinting, contribute to genetic variability, and may play roles in genome structure and regulatory functions. These sequences, such as microsatellites and alpha satellite DNA, are significant in the study of genetics and evolution.
Areas in the DNA that contain repeated segments are significant for several reasons. They vary greatly from person to person, making them essential for DNA fingerprinting and paternity testing. These segments, known as repetitive elements or microsatellites, are prone to replication errors and are highly polymorphic, which is useful in genetic studies. Furthermore, they constitute a large part of the human genome and are involved in its structural organization and possibly in regulatory functions.
Many repetitive sequences are transposons, which can move within the genome, impacting genetic variation and regulation. Their presence in the genome has implications for how DNA folds in three-dimensional space within the nucleus. Moreover, in organisms like primates, alpha satellite DNA is a form of repetitive DNA important for centromere structure and function.
The study of repetitive DNA has evolved from basic reassociation kinetics to intricate genomic sequencing, revealing the complex nature of genome architecture and the potential roles these repetitive sequences may play in evolution and biological processes.
After an automobile accident, chou reports that she cannot see. examinations indicate no apparent medical condition. chou may be suffering from
Dense water near the poles sinks, creating a current towards the equator. What would you expect to happen to the current if temperatures at the poles decreased?
Give an example of spinal reflex and explain how the nervous system functions in this reflex action
The patellar reflex is the most common example or a spinal reflex. When the knee is tapped, the nerve that will receives this stimulus sends an impulse to the spinal cord and relay it to the motor nerve. This sources the quadriceps muscle at the front of the thigh to contract and twitch up the leg. This reflex contains simply two nerves and one synapse. The leg will start to twitch up on the other hand the brain is just suitable aware of the tap and comprehends the situation. Subsequently the tap, the leg is routinely lengthy once and comes to rest. The nonappearance of this reflex is problematical and recognized as westphals sign this reflex might be lessened or absent in lower motor neuron lesions and during sleep.
A spinal reflex such as the withdrawal reflex involves a rapid, protective response where sensory neurons communicate with interneurons in the spinal cord, which trigger motor neurons to cause muscle contraction, all without conscious brain activity.
An example of a spinal reflex is the withdrawal reflex. This occurs when a person accidentally touches a hot stove and immediately withdraws their hand. In this reflex action, sensory neurons detect the painful stimulus and send nerve impulses to the spinal cord. There, the impulse transfers to an interneuron, which then relays it to a motor neuron. The motor neuron carries the signal to a muscle, like the biceps brachii, causing it to contract and thus withdrawing the arm. This reflex arc happens without conscious thought or brain involvement, illustrating the efficiency of the somatic nervous system in protecting the body from harm.
What is the over-the-counter, lower-dose version of the fat-blocking prescription drug xenical (orlistat)?
While analyzing a karyotype genetics identify a missing chromosome. Which term describes this chromosomal abnormality
Answer: Aneuploidy
Explanation:
Aneuploidy is the presence of abnormal normal of chromosomes in a cell. Example: The chromosomes number 45 or 47 chromosomes which is not common in case of human beings.
The normal number of chromosomes in human beings is 46. This results in different syndromes which can cause deformities in the body of the individual.
It leads to miscarriage in most of the cases the survival is very less.
A diploid organism has 10 chromosomes; how many gene combinations can occur in the organism’s gametes?
In this problem, if there are 10 chromosomes for a diploid organism, there are a total of 20 gametes in the organisms. A diploid cell contains 2 set of chromosomes. A diploid cell is a type of cell that contains 2 sets of chromosomes each is inherited from each parent, the father and the mother. Gametes are the germ cell, whether male or female and that it unites with the other germ cell of the opposite se during the reproduction in order to form a zygote. Therefore, we can say that a diploid organism, which has 2 sets of chromosomes, will have a total of 20 gene combination which will occur in the organism’s gametes.
In a species of mice, brown fur color is dominant to white fur color. when a brown mouse is crossed with a white mouse all of their offspring have brown fur. why did none of the offspring have white fur?
Answer:
Because white fur is determined by a resessive allele. Resessive alleles are only expressed if they pair with another resessive allele.
Explanation:
The physical characteristics of the mice shown in the above question are determined by the dominance relationship between the genetic alleles. As we can see from reading the question, brown fur is a trait regulated by a dominant allele, in mice, on the other hand, white fur are a trait regulated by recessive alleles.
Dominant alleles are so named because certain genetic traits prevail over others. This is because dominant genes do not need their dominant allele pair on the chromosome, that is, they do not need to be double-dose in the genotype to manifest. However, recessive alleles are so named because to manifest their hereditary characters one must present a double dose in the genetic code.
In this way, we can define the reason that prevented the offspring, shown in the above question, from presenting white fur. Because white fur is recessive, it would require both parents to have white fur for this trait to be passed on to their offspring.
The underlying assumption of the harrod-domar growth model is that
The underlying assumption of the Harrod-Domar growth model is that Growth is mainly determined by capital accumulation through savings
The Harrod-Domar model is a model of economic growth. According to the Harrod-Domar model, economic growth depends on two important factors, the saving ratio and the capital output ratio.
During activity and at rest, which type of body tissue burns the most calories?
Ms. golightly was diagnosed with breast cancer. the tumor was removed along with a large area of surrounding tissue and lymph nodes. this type of surgical procedure is called ________ resection.
"________ describes a proportion of difference among people that is attributed to genetics."
"Heritability describes a proportion of difference among people that is attributed to genetics."
Definition of Heritability: Heritability is a statistical measure that ranges from 0 to 1 (or 0% to 100%). A heritability of 0 indicates that genetic factors play no role in the observed variation, while a heritability of 1 indicates that all the observed variation is due to genetic differences.
Partitioning Variation: In the context of heritability, the goal is to understand the relative contributions of genetic and environmental factors to individual differences in a trait.
Interplay of Genetics and Environment: It's crucial to understand that heritability does not imply that a specific percentage of an individual's trait is due to genetics. Rather, it provides information about the relative importance of genetic factors in explaining population-level variability.
Context Dependence: Heritability can vary across populations and environments. A trait may have different heritability estimates in different populations or under different environmental conditions.
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Assembly of multi-subunit secretary proteins, such as hemoglobin, occurs within the er and golgi apparatus of a eukaryotic cell. discuss what limitations, if any, exist to the large scale production of genetically engineered hemoglobin from
e. coli.
Genetic engineering often means insertion of a gene and harvest of the protein from huge numbers of bacterial cells.
Hemoglobin, are only functional as an assembly of multiple sub-units. The ability to efficiently harvest the protein of interest and purify it away from all the other proteins normally produced by the host cell, is one of the major limiting factors for the large scale production of genetically engineered hemoglobin.