Answer:
Homologous structures provide evidence for common ancestry, while analogous structures show that similar selective pressures can produce similar adaptations (beneficial features). Similarities and differences among biological molecules (e.g., in the DNA sequence of genes) can be used to determine species' relatedness.
While comparable structures demonstrate that similar selective pressures can result in similar adaptations, homologous structures suggest that they have a common ancestor (beneficial features).
How do homologous structures and embryological similarities help evolution?Since some homologous components may only be detected during the development of an embryo, embryology is crucial to understanding how a species has evolved. For instance, although though the tail does not present in the fully mature organism, all vertebrate embryos, including those of humans, chickens, and fish, have one during the early stages of development.
What makes homology such a crucial concept in evolutionary biology?Existing Structures Serve as the Foundation for New Functions. We learn a crucial lesson about evolution from homologous structures: Primarily, evolution alters pre-existing structures. That is, even when two species perform entirely distinct functions, they frequently use homologous structures to do so.
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Select all the parameters that can be determined by analyzing a protein sample with tandem mass spectrometry.amino acid sequencegenetic sequenceisoelectric pointprecursor ion mass
Amino acid sequence and precursor ion mass can be determined by analyzing a protein sample with tandem mass spectrometry.
Amino acid, any of a class of organic compounds made composed of an acidic carboxyl group (COOH), a basic amino group ([tex]NH_2[/tex]), and a specific organic R group (or side chain) for each amino acid. Alpha-amino [alpha-amino carboxylic acid is referred to as an amino acid informally. An amino and a carboxyl group are both joined to the core carbon (C) atom, known as the -carbon, in every molecule. A hydrogen (H) atom and the R group typically fulfill the remaining two bonds of the -carbon atom.Except for glycine, all amino acids are chiral compounds. In other words, they can be found in two optically active asymmetric forms that are mirror reflections of one another. (This characteristic conceptually resembles how the left and right hands are situated in space.) The D and L enantiomers have different designations. It's vital to remember that proteins usually never include any amino acids other than those with the L-configuration.
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Which statement about sex differences in adolescence is true?
By midadolescence, most girls perform better than the average boy in running speed.
The number of red blood cells increases in boys but not in girls.
Girls' legs are longer than boys' in relation to the rest of the body.
Boys start to add fat on their arms, legs, and trunk.
The statement "Girls' legs are longer in relation to the rest of the body than boys'" is true.
During adolescence, girls typically go through a period of growth spurt, during which they experience a rapid increase in height. This growth spurt is often accompanied by changes in body proportions, with the legs becoming relatively longer compared to the rest of the body. This difference in body proportions between boys and girls is a normal aspect of human growth and development and is due to a combination of genetic and hormonal factors. However, it is important to note that these differences are averages and there is significant variability within each gender. Additionally, the statement "By midadolescence, most girls perform better than the average boy in running speed" is also true. Girls generally mature faster than boys during adolescence, which can result in better physical performance, such as running speed, during this time.
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As warm, humid air rises it may condense and form clouds. This is an example of what type of air?
Answer:
The type of air is rising air, also known as updraft.
where does the energy come from that drives water transport in plants?
The energy that drives water transport in plants comes from the process of photosynthesis.
Plants use the energy from sunlight to transform carbon dioxide and water into glucose (sugar) and oxygen during the process of photosynthesis. The oxygen is discharged into the atmosphere while the glucose serves as a building block and energy source for the plant.
Water flows from the roots to the leaves and evaporates from their surfaces during the process of water transport in plants, commonly known as transpiration. The transpiration pull, a process that results in a suction pressure that draws water from the roots upward, is caused by this. The glucose created by photosynthesis serves as a source of energy for this activity. Thus, photosynthesis serves as an indirect source of energy for plants' requirement to move water.
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Which of the following statements concerning the characteristics of life is FALSE?
A) Reproduction is defined as an increase in the size of an organism.
B) Viruses have some, but not all, of the characteristics of living things.
C) Organisms may not exhibit all of the characteristics of life at all times.
D) Reproduction can occur asexually or sexually in living things.
E) Living things store metabolic energy in the form of chemicals such as ATP.
A) An organism's size increasing is referred to as reproduction.
Reproduction. Every living creature has the ability to reproduce. The process through which living organisms produce children is called reproduction. It may just take one cell to divide into two daughter cells for a living thing to begin reproducing. The capacity to reproduce, grow and develop, consume energy, maintain homeostasis, respond to their environment, and be adaptable are all characteristics shared by all living creatures. A distinguishing quality is one that all living things ought to display. No living thing can replicate itself. mule, worker bees, and sterile human couples, for instance. Therefore, reproduction is not really a characteristic that distinguishes living things. It is among the most significant traits of the living being.
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. in the offspring generation, what is the frequency of the cr allele? 7. in the offspring generation, what is the frequency of the cw allele?
The CR allele, also known as p, occurs at a frequency of 0.8. The CW allele, often known as q, occurs at a frequency of 0.2. This community is said to be at Hardy-Weinberg equilibrium if it is not evolving.
How do alleles and genes differ?Genes are pieces of DNA that code for proteins that affect physiology and contribute to specific traits or functions. Alleles are many gene variants that differ depending on the nucleotide base found at a specific genomic site. The genotype of a person is the set of alleles that make them up.
Where are alleles?Every gene locus is a location on a chromosome where each allele is found. The two alleles of the gene are shared by two homologous pairs, one from each parent, and are situated in the same area.
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Around 1920, the amount of glucose in blood could be measured by an electronic meter.
TrueFalse
This assertion is False that An electronic meter might be used to gauge the blood's glucose level around 1920.
The amount of electric energy used by a building, a tenant space, or electrically powered equipment is measured by an electric meter, also known as an energy meter.
Electric utilities measure the amount of electricity delivered to customers for billing purposes using electric meters that are installed on the premises of the customers. They are typically calibrated in billing units, the most popular of which is the kilowatt hour (kWh). Every billing cycle, they are typically read once.
Some meters may monitor demand, the largest consumption of power in a given interval, when energy savings during specific times are needed.
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How do the lungs and kidneys, respectively, compensate for metabolic acidosis?
Lungs and kidneys, respectively, Option C: Hyperventilation; excrete hydrogen ions in order to compensate for metabolic acidosis.
Since the majority of the acid in the body is carbonic acid, which is created from carbon dioxide during metabolic activities, the lungs do this by exhaling carbon dioxide. The rate at which you breathe determines how much carbon dioxide is expelled. This is termed as hyperventilation in lungs. When the kidneys are not eliminating enough acid from the body or when the body produces too much acid, metabolic acidosis develops. Thus, option C is the appropriate choice.
If left untreated, metabolic acidosis can progress to acidemia, which is characterized by low blood pH (below than 7.35) as a result of either increased body production of hydrogen ions or the body's inability to produce bicarbonate ([tex]HCO^{3}[/tex]) in the kidney.
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Complete question is:
How do the lungs and kidneys, respectively, compensate for metabolic acidosis?
Hypoventilation; excrete bicarbonate ions
Hyperventilation; excrete bicarbonate ions
Hyperventilation; excrete hydrogen ions
Hypoventilation; reabsorb hydrogen ions
Which one of the following is NOT a function of glial cells?a.getting nutrients to the neuronsb.generating action potentialsc.cleaning up the remains of dead neuronsd.providing insulation
Generating action potentials is NOT a function of glial cells.getting nutrients to the neurons,.cleaning up the remains of dead neurons,providing insulation are the functions of glial cells.
Glia are non-neuronal cells of the central nervous system (brain and spinal cord) and the peripheral nervous system that do not generate electrical impulses. They are also known as glial cells (gliocytes) or neuroglia. They keep homeostasis in check, create myelin in the peripheral nervous system, and support and shield neurons. Glial cells comprise oligodendrocytes, astrocytes, ependymal cells, and microglia in the central nervous system, and Schwann cells and satellite cells in the peripheral nervous system. They also participate in physiological activities like respiration as well as synaptic connections and neurotransmission. While it was once believed that glia outnumbered neurons 10 to 1, more recent research employing better techniques and a reevaluation of previous quantitative data reveals that the ratio is really less than 1:1, with significant variance across various species.
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which iaging technique can provide information about brain function?
Oblique X-ray slices used in imaging techniques (CT) scans display the density of the various brain structures. Brain pictures may be created using magnetic resonance imaging (MRI), chemicals in a magnetic field.
What is the way of the brain?The brain controls a number of body processes, including our ability to think, speak, remember, and move our arms and legs. The spine and brain form the central nervous framework (CNS).
What makes us forget?Forgetting certain memories can be advantageous in a globalized society like the one humans and many other species live in since this can result in more adaptable behavior and improved decision-making.
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Oblique X-ray slices used in imaging techniques (CT) scans display the density of the various brain structures.
What is the way of the brain?
The brain controls a number of body processes, including our ability to think, speak, remember, and move our arms and legs. The spine and brain form the central nervous framework (CNS).
Brain pictures may be created using magnetic resonance imaging (MRI), chemicals in a magnetic field.
What makes us forget?
Forgetting certain memories can be advantageous in a globalized society like the one humans and many other species live in since this can result in more adaptable behavior and improved decision-making.
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What is a breakwater used for?
A breakwater is an offshore shore-parallel structure that "breaks" waves to lessen the force of the waves that reach the beach and to promote sediment accretion between the beach and the breakwater.
What are the advantages of a breakwater?By soaking up wave energy during storm events, living breakwaters lessen the consequences of storm surge and coastal erosion. As waves crash against the structure, their energy is diminished, calming waters on the breakwater's shoreward side and lowering the direct impacts on the shoreline.
What characteristics do breakwaters have?Breakwaters are typically strong, long-lasting structures that are used as hard-engineering safety precautions. They are frequently built in series to cut down on construction costs and provide protection for longer coastline lengths. They are formed of sturdy materials like rock armour, poured concrete, dolos, or tetrapods.
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What is a gene?
A. A series of amino acids
B. A series of DNA molecules
C. A segment of a DNA molecule
D. A segment of protein
Answer:
C. A segment of a DNA molecule
Explanation:
Gene are segments in your long DNA molecule. Different segments code for different things like height, smartness etc.
Many farmers who plant fruits and vegetables have to battle insects who eat or ruin their plants. To combat these insects, some farmers use pesticides. Pesticides are a chemical that you can spray on plants to kill the insects, but not the plant itself.
Using natural selection, explain what will eventually happen to the insect population living on the plants.
To enhance their chances of survival, insects will adapt to avoid any plant treated with pesticides.
How does natural selection increases the survival of insects?These beneficial characteristics spread across the population over time. Favorable features are passed down across generations as a result of natural selection.
Natural selection can result in speciation, the process by which one species gives rise to another that is utterly unique from it.
Therefore, it is noted that as pests acquire resistance a marked decline in sensitivity to pesticides will eventually lose their effectiveness.
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03.04 sympathetic and parasympathetic nervous systems
What two divisions does the peripheral nervous system divide into?
sensory somatic nervous system?
The afferent division and indeed the efferent division are additional divisions of the peripheral nervous system. The CNS receives impulses through peripheral organs through afferent but rather sensory division.
The nervous system is what?The brain, nervous system, and a sophisticated nerve network are all parts of the respiratory system. The brains and the body are communicated with via this system. The nervous system connects the brain via transmitting impulses.
How can your nervous system be fixed?A well-rounded, low-fat diet rich in vitamin B6, B12, as well as folate sources will help to safeguard the neurological system. Make sure to eat a lot of fresh produce, whole grains, including fruits in your diet. Take in plenty of liquids, especially water.
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When students are working in the lab, they have the option to view prepared slides or to make their own. There are two common slides that students make: a dry slide and a wet slide.
Dry slide: On a slide, either with or without a coverslip, a specimen is placed. wet slide: On the slide, a specimen is placed on a drop of water and covered with a coverslip.
To produce a viewable image of microscopic organisms and samples, a microscope is required. When looking at transparent objects that can fit on a microscope slide, the compound light microscope is often used. A thin, rectangular glass plate that can hold a variety of microscopic specimens is called a microscope slide. Depending on the kind of specimen you're looking at, you can prepare a microscope slide in a number of different ways. Just like its name suggests, a dry mount is A cover slip placed over the item you intend to observe on the slide. Water is not required. When a sample is placed on a wet-mount slide with a drop of water and covered by a coverslip, surface tension holds it in place.
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A certain cell undergoes mitosis every 20 min. The number of cells produced from one original cell after 1 h 20 min. Would be.
Answer: I'm not sure
Explanation:
which structures could be common to both prokaryotic and eukaryotic cells?
Answer:
Both prokaryotic and eukaryotic cells have structures in common. All cells have a plasma membrane, ribosomes, cytoplasm, and DNA.
Explanation:
19
Select the correct text in the passage.
Identify the effects of lead poisoning.
Sara lives in a densely populated region. The local government, in order to develop a plan for further development of that region, conducted a
survey. The survey revealed that many factories in that region emit harmful gases. There was deforestation on a large scale. Many people were
suffering from diabetes. The intelligence quotient in children was observed to be very low. Many dead fish were found in the river flowing
through that region.
Sara lives in a densely populated region. The local government, in order to develop a plan for further development of that region, conducted a survey. The survey revealed that many factories in that region emit harmful gases. There was deforestation on a large scale. Many people were suffering from diabetes. The intelligence quotient in children was observed to be very low. Many dead fish were found in the river flowing through that region.
The effects of lead poisoning is the intelligence quotient in children was observed to be very low.
What is region?Region is a specific area that has common features.
What is survey?Survey is a list of questions aimed for extracting specific data from a particular group of people.
What is quotient?Quotient is a degree or amount of a specified quality or characteristic.
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Which organ secretes sodium bicarbonate to neutralize the acidity of chyme?
Answer:
The pancreas
Explanation:
This sodium bicarbonate is secreted by the pancreas
when analyzing the outer membrane of gram negative bacteria, which part of lipopolysacchardie induces an antibody response
Part of the lipopolysaccharide causes an antibody response to the teichoic acid’s antigen lipid core polysaccharides when it is used to analyze the outer membrane.
In the food sector, polysaccharides are added as stabilizers and dietary fiber. Polysaccharides can also take the form of microbial products, as in the case of yogurt. Typically, polysaccharides only have one function: to store energy or provide structural support. Glycogen and starch are unexpectedly small polymers that can be utilized to store power. Linear polymers like cellulose and chitin can help support structural integrity in both plants and animals. By combining a wide range of monosaccharides through a glycosidic link, polysaccharides are formed. These are monosaccharide polymers with high molecular weight. Polysaccharides make up the majority of the carbohydrates that are found in nature.
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A )Wear single-use gloves. B) Sanitize their hands. C) Wear an apron. D) Use bare hands.
Answer:
A) Wear single-use gloves.
B) Sanitize their hands.
C) Wear an apron.
These are recommended safety measures for handling food and food preparation to prevent contamination and the spread of foodborne illnesses. D) Using bare hands is not recommended for food handling and preparation.
Explanation:
explain why the templating region of the rna includes one and a half repeats of the telomeric sequence
A primer for the trailing strand is created when the leading strand doubles back on itself. The typical start of RNA and polymerase activity can produce the lagging strand.
The DNA ends of linear chromosomes, known as telomeres, are made up of tandem repeats of basic DNA sequences. DNA polymerases are unable to duplicate the 5' ends of linear DNA molecules because they can only stretch primers in a 5' to 3' direction. The telomeres must be replicated using a reverse transcriptase known as telomerase. As a component of the enzyme complex, this telomerase carries its own RNA template that is complementary to the repetitive sequences in the telomeres. The free end of the telomeric DNA links to the telomerase's ARN, which later serves as a template for the extension of the conductor strand of the template in yet another unity of repetition. A typical beginning of DNA synthesis can be used to create the lagging strand.
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All of the following are required in the reactions of microbial respiration EXCEPT A) electron transport system. B) cytochromes. C) a source of electrons.
It happens without even a trace of oxygen. Anaerobic breath happens in a creature's cell when there is a shortfall of oxygen.
Cell breath is the cycle by which microorganisms acquire the energy accessible in starches. They bring the starches into their cytoplasm, and through a mind-boggling series of metabolic cycles, they separate the sugar and delivery the energy.
There are two fundamental kinds of microbial breath, high-impact and anaerobic, in vigorous breath, oxygen functions as the last electron acceptor, while in anaerobic, different components, unique in relation to oxygen, complete the electron transport framework.
In this way, as a general rule, oxygen isn't generally a prerequisite, what's required is the last electron acceptor, in low oxygen conditions, nitrates, sulfates, and iron mixtures, other than oxygen, are utilized.
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Which i not a correct order of procee in the water cycle?
A) accumulation-evaporation-runoff
b) precipitation _ percolation - increaed groundwater
C) runoff- accumulation - evaporation
D) evaporation - condenation - precipitation
Precipitation _ percolation - increaed groundwater is not a correct order of procee in the water cycle.
Evaporation, condensation, and precipitation are frequently taught as three basic, circular processes that make up the water cycle. This is a good paradigm, but in practise things are much more nuanced. Water flows through ecosystems on Earth in a very complicated way that is still not fully understood. In order to increase our capacity to forecast weather, climate, water resources, and ecosystem health, NOAA is working to deepen our understanding of the water cycle at all sizes, from the global to the local.
The water cycle demonstrates how water is constantly moving both inside the Earth and in the atmosphere. It is a complicated system with a wide range of processes. Water vapour is created when liquid water evaporates, and this water vapour then condenses to form clouds and falls back to earth as rain and snow.
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What type of tissue is found in the
stomach and is used to churn its
contents?
Answer: The stomach walls contain three layers of smooth muscle arranged in longitudinal, circular, and oblique
Explanation:
These muscles allow the stomach to squeeze and churn the food during mechanical digestion.
Which of the following are true of the Polymerase Chain Reaction (PCR)? Check all that apply.
- It uses an RNA primer It requires a special DNA polymerase that works at very low temperatures.
- It makes many copies of a target DNA sequence
- It can start with as little as one DNA molecule
- It involves DNA replication in a living cel
An RNA primer is employed. It calls for a unique DNA polymerase that operates at extremely low temperatures.
In this procedure, two sets of primers (short chemically generated oligonucleotides that are complementary to the sections of DNA) and the enzyme DNA polymerase are used to create multiple duplicates of the gene (or DNA) of interest in vitro.
Certain viral infections and genetic alterations can be quickly and accurately diagnosed using PCR (polymerase chain reaction) assays. In order for the tests to function, a sample must include the Dna molecules of a pathogen (an organism that causes disease) or aberrant cells. In molecular biology and biotechnology labs, the PCR, or polymerase chain reaction, method is used to make several copies of a specific DNA region.
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Compare aerobic respiration, anaerobic respiration and fermentation. How are the processes similar? How are they different? How do these processes determine which environment the organism can live in?
Comparison between the aerobic respiration, anaerobic respiration and fermentation are describe as follows:
Aerobic respiration is the process of production of cellular energy in which oxygen is involved. Anaerobic respiration is the process of respiration by using electron acceptors which does not involve oxygen.
What is aerobic respiration?
Cellular respiration is the process by which biological fuels are oxidized in the presence of an inorganic electron acceptor, such as oxygen, to produce a large amount of energy that drives the mass production of ATP. Cellular respiration can be described as a set of metabolic reactions and processes that take place in the cells of organisms to convert chemical energy from nutrients into adenosine triphosphate (ATP) and subsequently release waste products.To know more about aerobic respiration, click the link given below:
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FILL IN THE BLANK. lipid-soluble hormones travel in the blood joined to a protein carrier and are thus called ______ hormones.
Lipid-soluble hormones travel in the blood joined to a protein carrier and are thus called bound hormones.
Hormones are the chemical messengers that are present throughout the body in the bloodstream. Their function is to regulate the various body functions. These hormones are released from the endocrine glands. The examples of hormones are: vasopressin, growth hormone, progesterone, etc.
Lipids are the organic biomolecules that are comprised of fats, waxes, sterols, fat-soluble vitamins, etc. The lipids are very essential in body for the formation of plasma membrane. Lipids are amphipathic molecules with polar head and non-polar tail.
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After evaluating each state’s energy information, describe which of the two states offers the best solution for responsible, cost-efficient energy. Write one to two paragraphs and provide evidence for your answer.
After evaluating each state’s energy information, the two states which offers the best solution for responsible, cost-efficient energy are Massachusetts and New York.
What is Energy efficiency?This is referred to as the use of less energy to perform the same task or produce the same result and it involves some special equipment and actions by individuals.
The two states who offers the best solution for responsible, cost-efficient energy are Massachusetts and New York as a result of them using energy saving products more etc.
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Active neurons require _____ the way a car requires fuel.
Similar to how a car needs fuel, active neurons require glucose.
A simple sugar, glucose has the chemical formula C6H12O6. Glucose is the most common monosaccharide, or kind of carbohydrate. The majority of plants and algae produce glucose during photosynthesis from water and carbon dioxide with the help of solar energy, where it is utilized to create cellulose, the most prevalent carbohydrate in nature, in the cell walls.
Glucose is the most significant source of energy in all species' energy metabolism. For use in metabolism, glucose is stored as a polymer, primarily as starch and amylopectin in plants and glycogen in animals. Animals' blood contains glucose as blood sugar. D-glucose is the type of glucose that is produced naturally, whereas l-glucose is synthesized in relatively small amounts and has lower biological activity.
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