The study of the vital statistics of a population and how they change over time is referred to as Demography. it is of tremendous importance to the economy.
The greater the difference in pressure the stronger winds will be ….true or false
Answer:
True
Explanation:
Yes the statement is true since the air flows from higher pressure to lower pressure and the rate of flow is directly proportional to pressure difference.
So increase in pressure difference will cause increase in rate of flow of air which means the winds will ne stronger.
during ______, dna serves as a template to assemble a strand of rna. a. transcription b. translation c. dna transfer d. transcriptional modifications e. replication
What is taking place in the picture belowA. Amino Acid spoolingB. TranslationC. Cellular RespirationD. Transcription
The biological process that is taking place in the picture in the question is called translation (b), meaning the event where the mRNA is translated into a sequence of amino acids (amino acids chain) that form a protein.
Explain how Harry Hess’s discovery of sea-floor spreading *positively* impacted Alfred Wegener’s theory of continental drift. (The asterisk word is supposed to be bold and underlined but I couldn’t figure out hot to type that on here) btw this is science not biology
In Support with Alfred Wegener's theory of continental drift, Hess explained how the merged continents have detached into the seven different continents that exist today.
Alfred Wegener's hypothesis state that all continents exist today was attached together in primitive times and existed as supercontinent called as Pangaea . While Seafloor spreading proves that the ocean itself is a site of tectonic activity. Earth in its Shape with Seafloor spreading is just the part of tectonics movement.
Seafloor spreading also give an idea to explain continental drift in the theory of plate tectonics. When oceanic plates diverge, tensional stress causes fractures that occur in the lithosphere that caused movement.
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What is the most logical explanation for why Alice saw bubbles forming in the leaves of the elodea?
In the experiment, Alice placed a sprig of Elodea in water with sodium bicarbonate as a source of carbon and then placed it under a strong light so it would photosynthesize.
Given that photosynthesis takes a carbon source, water, and light to produce glucose and oxygen, the most logical conclusion is that the bubbles are formed because the Elodea plant is releasing oxygen (option c).
The plastics industry realized more than 20 years ago that recycling plastics was a necessity for our planet. Can you recognize the important facts about recycling plastics? ALL BUT ONE statement is true. That is A Only plastics marked with the #1 resin code can be recycled economically.Only plastics marked with the #1 resin code can be recycled economically.
B Recycled bottles and containers are used to produce lumber products that can be used as an outdoor building material.Recycled bottles and containers are used to produce lumber products that can be used as an outdoor building material.
C Every ton of plastic bottles recycled saves about 3.8 barrels of oil.Every ton of plastic bottles recycled saves about 3.8 barrels of oil.
D Because different types of plastic must be recycled separately, the numbers on plastic containers are there to help consumers and recycling centers with sorting.
The statement that is not true about recycling plastics is Only plastics marked with the #1 resin code can be recycled economically; option A.
What are plastics?Plastics are artificially produced materials that are polymers of organic compounds usually derived from petroleum.
Plastics are non-biodegradable, hence. they contribute a lot to environmental pollution.
In order to reduce environmental pollution from plastics, the plastics industry developed a means to reuse already produced plastic to make new plastics in a process known as recycling.
Plastics marked with the #1 and #2 resin code can be recycled economically.
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I need help with thisItem2.What is asthma? Why do we suspect that Melissa has asthma?
Asthma is a type of respiratory disease in whcih the lung's air passages become too narrow and has excessive mucus production. This will lead a person to experience difficulty of breathing, coughing, and tightness in the chest area. Asthma attacks occur when it is triggered by allergens, strenuous activities, and stress.
We can suspect that Melissa probably has asthma based on the symptoms of coughing for several days and she is experiencing difficulty in breathing.
Match the listed diseases to the listed healthcare professionals who are qualified to treat thediseases.urologistnephrologistgynecologistgeriatriciangastroenterologisthepatologistotorhinolaryngologistcardiologistpulmonologistotorhinolaryngologistDiseasesurinary tract infectionnephrolithiasisurinary incontinencehepatitisappendicitisendometriosistesticular cancerotitiscarditisbronchitis
urologist- urinary tract infection
nephrologist- nephrolithiasis
gynecologist- urinary incontinence, endometriosis
hepatologist- hepatitis
otorhinolaryngologist
cardiologist- carditis
pulmonologist- bronchitis
otorhinolaryngologist- otitis
use the following words in a sentence to explain how volcanoes are formed.
convect, magma, mantle, core, tectonic plates.
If Philippine Atmospheric Geophysical Astronomical Services Administration is not yet established, could we just rely on the wind to determine the weather?
If Philippine Atmospheric Geophysical Astronomical Services Administration is not yet established, we couldn't just rely on the wind to determine the weather.
The National Meteorological and Hydrological Services (NMHS) organization of the Philippines is known as the Philippine Atmospheric, Geophysical, and Astronomical Services Administration (abbreviated as PAGASA).
Its duties include protecting the nation from natural disasters, ensuring everyone's safety, well-being, and financial security, and advancing national progress by providing scientific and technological services in the fields of hydrology, climatology, meteorology, astronomy, and other geophysical sciences.
PAGASA, which was established by restructuring the Weather Bureau on December 8, 1972, is currently one of the Department of Science and Technology's Scientific and Technological Services Institutes.
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2. What role do greenhouse gases play in the greenhouse effect?
Answer:
Explanation:
The greenhouse effect is the way in which heat is trapped close to Earth's surface by greenhouse gases.
Environmental science focuses on the interactions between:O Humans and the EnvironmentO Humans and ScientistsO Scientists and the EnvironmentO Geologists and Scientists
Environmental science focuses on the interactions between humans and the environment.
Environmental science focuses on the interactions between humans and the Environment, which is in the third option. So, the correct answer is first option .
Environmental science is an interdisciplinary field that examines the interactions between humans and the environment. It involves the study of various aspects of the environment, including the physical, biological, and social sciences. Environmental scientists investigate the complex relationships and interactions between natural systems, human activities, and the environment. Scientists, including ecologists, biologists, chemists, geologists, and other specialists, contribute to understanding and addressing environmental challenges and finding sustainable solutions. So, the correct answer is first option .
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write a 4 to 5 sentence paragraph that describes the sliding filament theory of muscle contraction. Be sure to include the terms actin, myosin and sarcomere in response
The sliding filament theory explains how muscles in the human body contract to produce force.
Scientists discover that under de microscopy changes in the sarcomeres as muscle tissue, they observed that during contraction one part of the sarcomere arrangement (named the "A band") remained in constant length. This band contains myosin filaments. On the other hand, the band that changes length is composed of actin filaments
I need help with this can not find answers anywhere !
Acromial end of the clavicle articulates with the acromion of the scapula.
Head of the radius articulates with the capitellum of the humerus.
Sternal end of clavicle articulates with manubrium of sternum.
Trochlea of humerua articulates with troclhea notch of ulna.
Glenoid cavity articulates with the head of humerus.
The point at which two or more bones meet is referred to as articulation or a joint which are functioning for movement and balance.
8. Which ways use heat to help separate the mixture?
A. Filtering
B. Boiling
C. By Hand
D. Chromatography
Which type of joints hold together the bones of the skull?
Most of the bones in the skull are held together by non-moving joints called sutures.
Answer:
Sutures are a type of fibrous joints (or fixed joints) that hold together the bones of the skull and don't allow the joined bones to move.
Hello, can I have help with question number 11 , please? Can I all the choices for this question.
Smooth muscle has a series of characteristics that identify it, Presents a single nucleus, has a different type of myosin, they are not organized in sarcomeres therefore so they are not striated, and they generate weak membrane potentials, however, can be contracted for long periods of time and the movement is not consciously controlled. Therefore we can say that the correct answer is option b.
That a grade 11 questionBACKGROUND-Q1: In your own words, discuss how the bone structure of the limbs in the cat, whale, and bat are similar to those seen in humans.BACKGROUND-Q2: In your own words, describe how the function of these homologous structures differ for each animal. What can the human hand do that the others cannot?
Q1: As we know the limbs, especially arms are homologous structures, which means that possess a common ancestor, so we can find structures that have the same origin, even when each has suffered changes accordingly to their adaptations, the origin is the same, and the same bones are present such as radius and ulna.
Q2: As we said the evolutive origin is the same, however, the function is the same, the ancestral structure suffered changes according to their own selective pressures, for example, bats possess long phalanges that allow flight, meanwhile human has opposable thumbs that allow tool management.
2a. Which curve was generated using an enzyme taken from a bacteria that lives in hot springs at temperatures of 70OC or higher and explain why? b. The optimum temperature for enzyme 1 (curve 1) is approximately?c. Which curve was most likely generated from an analysis of an enzyme from a human stomach where conditions are strongly acidic and explain why?
In this case, we need to remember how we detect an optimum in enzyme activity. As the reaction accelerates and reaches the slope the optimum has been reached, when conditions keep changing after the optimum, the curve descends.
2a, here we have a thermophilous bacteria that lives at a high temperature so is natural that the optimum of an enzyme of this bacteria be at high temperatures as is the case of curve 3.
b. For this curve we have a slope around 30°C so this is the optimum temperature.
c. Here the curve is generated with a pH range, and the dynamics is the same that with temperature. The human stomach has a pH around 2, so the most likely slope that corresponds with human enzyme is curve 4.
I'm not meat and egg, I'm not alive but I have 5 fingers
The most probable answer is the glove, since it has space for five fingers but is not made by meat, nor by egg, and it is not alive.
What molecule is a pigment
Answer
A molecule that absorbs light and has a color
Explanation
A pigment is a generic term for a molecule that absorbs light and has a color. Plants contain many pigments, giving rise to the various colors we see. Flowers and fruits obviously contain a large number of organic molecules that absorb light. Leaves, stems and roots also contain a variety of pigments.
Cellular respiration and Photosynthesis co-exist as paired metabolic processes. Cellular respiration generates and releases carbon dioxide. Photosynthesis stores energy in the chemical bonds of glucose
All of the options are correct.
The products of one process are the reactants of the other. We can conclude that cellular respiration is the direct opposite of photosynthesis.
12. What part of the circulatory system interacts with the structure labeled 11?13. List the four types of respiration and where they occur.Labels:1- Nasal vestibule/Nose2- Oral cavity/Mouth3- Larynx4- Lungs6- Diaphragm7- Pharynx8- Trachea9- Bronchi10- Bronchioles
In the diagram, part 11 corresponds to the pulmonary alveoli, which is where the gas exchange occurs, given that they are surrounded by capillaries and the oxygen and carbon dioxide can diffuse between the capillaries and the alveoli.
So, capillaries are the part of the circulatory system that interacts with alveoli.
The types of respiration in humans are:
• Pulmonary ventilation,: the process of, taking air in and out of the lungs, (inhalation and exhalation). ,This involves the nasal cavity, pharynx, larynx, trachea, bronchi, bronchioles, alveoli, and lungs, as well as the diaphragm (structures 1 to 11)
,• External respiration ,is the ,gas exchange, that, occurs in the alveoli (structure 11),, where the carbon dioxide diffuses from the blood cells in the capillaries to the alveoli, and the oxygen goes from the alveoli to the capillaries.
,• Internal respiration ,is the exchange of oxygen and carbon dioxide that occurs ,between the blood cells and all the other cells in the body,.
,• Cellular respiration, is the set of metabolic reactions that takes place in the mitochondria of each cell to break glucose to obtain energy in the form of ATP, which requires the presence of oxygen.
If molecules of mRNA have the following nucleotide base sequences, what will be the sequence of amino acids in polypeptides synthesized by eukaryotic ribosomes? Remember, transcription starts with an AUG codon. 1. 5′–AUGGGGAUACGCUACCCC–3′ 2. 5′–CCGUACAUGCUAAUCCCU–3′ 3. 5′–CCGAUGUAACCUCGAUCC–3′ 4. 5′–AUGCGGUCAGCCCCGUGA–3′
The mRNA is used to synthesize polypeptides in a process called translation, and for that the mRNA is interpreted as a series of groups with three nucleotides each, called codons. So for each three letters, we have a codon. The codons transcribe the following amino acids: Alanine, Arginine, Asparagine, Aspartic acid, Cysteine, Glutamic acid, Glutamine, Glycine, Histidine, Isoleucine, Leucine, Lysine, Methionine, Phenylalanine, Proline, Serine, Threonine, Tryptophan, Tyrosine, Valine, Selenocysteine.
The codons are organized in a chart, as the one that follows:
As the translation starts with an AUG codon, we sometimes have to leave some trios behind. The answer would be as follows:
1. AUG - met | GGG - gly | AUA - ile | CGC - arg | UAC - tyr | CCC - pro
The sequence would be MET-GLY-ILE-ARG-TYR-PRO
2. We will start only after the AUG codon
AUG - met | CUA - leu | AUC - ile | CCU - pro
The sequence would be MET-LEU-ILE-PRO
3. Again, we start after the AUG codon, and if the stop codon shows up the translation stops
The sequence would be only AUG - met | UAA - stop
MET
4. AUG - met | CGG - arg | UCA - ser | GCC - ala | CCG - pro | UGA - stop
The sequence would be MET-ARG-SER-ALA-PRO
3. When you cut your skin, the body secretes platelets to help form a clot. Theclot formation continues until the wound is sealed.ChoosePositive feedbackNegative feedback
Clumping and creating plugs in the blood vessel injuries is the function of platelet to stop bleeding. When the skin is cut, the body starts to secrete platelet to stop the bleeding or form a clot until the wound is sealed. This is called positive feedback which contributes to the accelated formation of platelet that fill in the injured blood vessels and to prevent extreme blood loss.
What is the single source of both electrons used by AND the oxygen created by photosynthesis? During which part of the process does this occur?
Water is the single source as it provides the electrons by splitting into oxygen and hydrogen. This process happens during the light-dependent reactions.
What are some disadvantages to humans and other organisms of planting one kind of tree?
Planting one kind of tree is another form of a monoculture. Monoculture hampers ecosystem functioning, as it diminishes functional biodiversity. Terrestrial ecosystems are a complex network of several species, that interact with constant feedback among themselves. Trees are primary productors, which means they produce the essential nutrients (that is, organic carbon) that other animals will use to nourish and grow. Different types of primary productors begets functional diversity of herbivores (animals that harm them) and also symbiotic diversity (organisms that benefit them). Besides this, tree's diversity promotes soil stability and function, which is critical to keep the ecosystem working in the long run. Without a proper soil, trees will eventually die, which would annhilate terrestrial biodiversity. So, monocultures are not a pretty good idea in places like tropical forest, where there are a lot of different tree species. On the contrary, in ecosystems such as pine forest, where there is one dominant tree species (which is not the same, as only one tree species, it is just that one tree species is more abundant), planting one kind of tree (the dominant one) could be a good practice to restore the ecosystem.
Answer:
Some disadvantages of planting one kind of tree include:
1. Loss of biodiversity (the variety of life in the world or in a particular habitat or ecosystem).
2. They don't provide the necessary amount of nutrition/food.
3. It just takes up a lot of space in the future for when you could be building a farm or something.
Explanation:
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Punnet square for Tt x tt
The Punnett square that represents Tt x tt is:
This means that
50% of the offspring will be homozygous for the allele t. That is, 50% of the offspring will be tt.
and
50% of the offspring will be heterozygous. That is, 50% of the offspring will be Tt.
We can conclude that the correct answer is:
Answer:Punnet Square:
Is a survey of the guests about their preference of food at a party an observational study or experimental study? If it is an experiment, what is the controlled factor?
An observational study means that the researchers observe the data without changing anything, while in an experimental study the researchers change something to observe the effects of what they changed.
A survey of the preferred food of the guest is not changing anything, just asking for preferences, so this is an observational study.
what forms xylem and phloem
The vascular tissue of vascular plants is made up of various kinds of cells and components. The primary components of vascular tissue are the xylem and phloem.
Remember that the xylem transports water and dissolved mineral salts and the phloem transports sap made by cells and by photosynthesis.
Therefore, both the xylem and phloem form the vascular tissue of plants.
Now, the formation of the xylem and phloem is given by the vascular cambium. This vascular cambium produces xylem and phloem cells and originates from procambium that has not completely differentiated during the formation of primary xylem and primary phloem.
Now, Xylem can contain three types of elongated cells: tracheids, vascular elements or vessels (tracheae), and fibers. At maturity, when they perform transport functions, all these cells are dead.
Then, the cells of Xylem are:
- Tracheids.
- Tracheas or Vessels.
The phloem consists of two types of conducting cells: sieve tubes, which are the most characteristic elements, and annex cells.
The cells of Phloem are:
- Sieve cell and sieve tubes.
- Albumin cells.
- Companion cells
We can conclude that the correct answer is:
Answer:The elements that form Phloem are:
sieve elements, phloem fibers, and phloem parenchyma cells.
The elements that form Xylem are:
long tracheary elements, parenchyma, and fibers.