The atomic number of an atom determined by counting Number of Protons
Atomic number:
The Atomic number of an atom determined by Number of protons present in nucleus of the atom of the element. It is denoted by alphabet 'Z'. All atoms of a element will contains the same number of protons, and as well as other characteristics.
Atoms of different elements will have different types of atomic numbers. For example, the atomic number of all atoms of the Oxygen is 8, whereas the atomic number of all atoms of the Carbon is 6.
The atomic numbers of an atom are whole numbers as they are obtained by counting protons. The combination of Number of protons and nucleus gives the Mass number of Atom.
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History of the Universe Timeline Activity
Part 1-Put these Universe events in the order that you believe they occurred (from the first event to the last event)
The first flowers appeared on Earth
The first galaxies were formed
The first dinosaurs appeared on Earth
The first stars in the Universe were
formed
The formation of our Moon
The Big Bang
The formation of Earth's oceans
The first humans appeared on Earth
The first atoms were formed
The formation of our Sun
The first bacteria appeared on Earth
The first protons and neutrons were
formed
The formation of our Earth
The history of the universe timeline activity from the first event to the last is shown (refer to the events listed below in chronological order).
Universe Timeline Activity:
The history of the Universe Timeline Activity:
(From the first event to the last event)
1. The Big Bang.
2. The first protons and neutrons were formed.
3. The first atoms were formed.
4. The first stars in the Universe were formed.
5. The formation of our Sun.
6. The first galaxies were formed.
7. The formation of our Earth.
8. The formation of our Moon.
9. The formation of Earth's oceans.
10. The first flowers appeared on Earth.
11. The first galaxies were formed.
12. The first humans appeared on Earth.
Hence, the given list above is the correct timeline of events in the history of the universe timeline activity, that we believe have occurred, from the order of first to the last event.
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50 kg pitcher throws a baseball with a mass of 0.15 kg. If the ball is thrown with a positive velocity of 35 m/s and there is no net force on the system, what is the velocity of the pitcher?
−0.1 m/s
−0.2 m/s
−0.7 m/s
−1.4 m/s
The velocity of the pitcher is 0.105 m/s in a direction opposite to the velocity of the ball.
Velocity is defined as the direction of the movement of the body or the object in motion. Speed is generally a scalar quantity. Velocity (v) is a vector quantity that measures displacement over the change in time (Δt), represented by the equation v = Δs/Δt.
Momentum can be known as the power when a body is moving, meaning how much force it can have on another body. Momentum is all about the motion of an object. If an object moves with a double velocity, its momentum doubles.
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what is the name of palencima
Answer: I hope this helps
Explanation:
Palencia Name MeaningSpanish: habitational name from the city or region of Palencia in northern Spain.The Palencia surname is the patronymic or plural form of Palazzo; which is a habitational name, created a place name such as Palazzo Adriano in Palermo province, Sicily; Palazzo San Gervasio in Potenza province; or possibly from Palazzo Canavese in Turin province. Spanish and Basque: habitational name from Placencia (in Basque: Plaentzia) a town in Gipuzkoa province Basque Country (Spain) in Basque also known as Soraluze and hence officially named bilingually as Soraluze-Placencia de las Armas.
Answer:
Palencia, capital of Palencia province, in the Castile-León autonomous community, north-central Spain. It lies on the Campos Plain southwest of Burgos. Called the Pallantia by the ancient Greek geographers Strabo and Ptolemy, it was the chief town of the Vaccaei, an Iberian tribe.
Explanation
Alanine is a member of the twenty key amino acids that are used by our bodies to make proteins. Is this a chiral molecule?.
Glycine has an achiral structure. The chiral C atom is absent. Chiral consists of cysteine, alanine, and serine.
Chiral and Achiral molecules
Mirror images of chiral compounds cannot be superimposed on one another. Achiral molecules are mirror reflections of one another that can be superimposed. Chiral compounds have one or more asymmetrical centers. The centers of achiral molecules are all symmetric.
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in fruit flies, long wings (w) are dominant over short wings (w), and red eyes (r) are dominant over orange eyes (r). each individual possesses two alleles for each trait. if a fly that is homozygous dominant for both traits is crossed with a fly that is homozygous recessive for both traits, what is the predicted genotype of the offspring?
Option C If a fly that is homozygous dominant for both traits is crossed with a fly that is homozygous recessive for both traits, WwRr the predicted genotype of the offspring.
You inherited two identical copies of a gene if you are homozygous for that gene. The alleles are different, which is the reverse of a heterozygous genotype. Recessive features, such as red hair or blue eyes, are always present in individuals who are homozygous for that gene. Two chromosomal sets make up an individual human. Allele pairings are referred to as heterozygous and homozygous, respectively. The term "homozygous" refers to people who have two copies of the same allele (RR or rr). The term "heterozygous" refers to an individual organism with multiple alleles (Rr). Genes from each biological parent are inherited, which is referred to as homozygous or homozygosity. The mutation, which modifies the gene's DNA structure, causes the variation. Gene variations are known as alleles by experts. A person is homozygous if their alleles match exactly.
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What does the line of best fit indicate about the correlation between the variables?
Answer:
D
Explanation:
The line of best fit has a negative slope, therefore, the data has a negative correlation.
Which two statements explain why water is vital to sustaining a healthy
ecosystem?
A. Water molecules consist of atoms of hydrogen and oxygen.
B. All of Earth's heterotrophs depend on water as a source of energy
for life processes.
C. Autotrophs need water in order to make oxygen gas and sugars
from inorganic matter.
D. Water enables energy to move through all of Earth's systems.
Water is vital in sustaining a healthy ecosystem as the Autotrophs need water to make food from inorganic matter and water enables the transfer of energy through the earth's systems.
While water is broken down to produce oxygen during photosynthesis, oxygen and hydrogen are combined to produce water during cellular respiration. While photosynthesis utilizes carbon dioxide and releases oxygen, cellular respiration uses oxygen and creates carbon dioxide. The oxygen that is released is used by most organisms, including humans, for cellular respiration.
There are three ways that liquid water travels through land and through the earth: runoff, infiltration, and percolation (groundwater). Groundwater is absorbed by plants, and as it evaporates, it reaches the atmosphere (transpiration). Snow and ice that is solid can suddenly become gaseous (sublimation).
So, water is necessary in sustaining life on earth.
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The location of the rotator cuff muscles in relation to the glenohumoral joint minimizes the upward pressure against the __________.
The location of the rotator cuff muscles in relation to the glenohumeral joint minimizes the upward pressure against the acromion of the scapula.
What is meant by the glenohumeral joint?The glenohumeral joint, which consists of a complex, dynamic articulation between the proximal humerus and the glenoid of the scapula, is a ball-and-socket joint. Particularly, the glenoid cavity (or fossa) of the scapula is in touch with the head of the humerus.
The upper limb exists connected to the axial skeleton by the synovial joint comprehended as the glenohumeral, or shoulder, joint. Between the glenoid fossa of the scapula (gleno-) and the head of the humerus, it exists a ball-and-socket joint (-humeral).
The rotator cuff muscles' position in regard to the glenohumeral joint reduces the pressure exerted upward on the scapula's acromion.
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Which organism in the food web would be considered both a primary consumer and a secondary consumer?
Why does a plant need to store glucose...
Answer:
Because glucose is used by plants for energy and to make other substances like cellulose and starch. Cellulose is used in building cell walls. Starch is stored in seeds and other plant parts as a food source. That's why some foods that we eat, like rice and grains, are packed with starch.
Explanation:
Sugars facilitate the assimilation of nutrient elements and their transport by the plant since they reduce osmotic pressure, thus improving their entry into plant tissues. During vegetative development, transport takes place towards the stem and root tips.
In the lytic cycle, the first stage is attachment, where the virus uses proteins on its surface to join to receptors on the host cell's membrane. What is the next stage in the lytic cycle?
Answer:
entry: the virus or its genetic material is taken into the host cell
Explain how social and economic groups (the working class, middle class, and upper class) experienced city life and culture similarly and differently.
The working class, middle class, and upper-class experience city life and culture similarly in that they all are subject to the noise, hustle, and ever-hectic life of the city.
The working class, middle class, and upper-class experience city life and culture differently because they have different purchasing power and time to spend on the luxuries city life has to offer.
What are the experiences and culture of city life?Living in the city, whether one belongs to the working class, middle class, or upper-class subjects one to the constant noise and pollution of city life.
The ever-busy culture of city life affects all in the city.
However, due to differences in their social and economic status, the upper class usually has more luxuries to enjoy in the city than either the middle class or working class. For example, attending concerts will be more for the upper class, with few opportunities for the middle class and almost none for the working class.
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describe the independent and dependent variables and a control treatment for an experiment to test the hypothesis that higher trichome density in plants is selected for in the presence of herbivores. identify an appropriate duration of the experiment to ensure that natural selection is measured, and predict the experimental results that would support the hypothesis.
Independent variable - presence of herbivores
Dependent variable - trichome density
Control - absence of herbivores
Duration - more and 1 generation
Prediction - Density of the trichomes increased between the control and variable tests
A unique name is provided to variables that is exclusively used in experimental studies. The dependent variable is referred to as such, and the independent variable as such.
The independent variable is the sole significant distinction between the experimental (e.g., treatment) and control (e.g., placebo) groups in a well-designed experimental trial. The variable that is being tested and measured in an experiment is referred to as the dependent variable since it is 'depending' on the independent variable.
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how does photosynthesis transform solar energy into the chemical energy of sugar molecules? match the words in the left column to the appropriate blanks in the sentences on the right.
Photosynthesis will transform solar energy into organic matter thanks to a structure inside the cell called chloroplast.
How does photosynthesis transform solar energy into the chemical energy of sugar molecules?The light reactions occur in the thylakoids. Absorption of a photon boosts proton-motive force to a higher-energy state. The energy of light is used to pump an electron from water through photosystem II, an electron transport chain, and photosystem I to NADPH. During energy-releasing redox reactions in the electron transport chain, protons are pumped into the thylakoid space. ATP synthase uses this electrons to make ATP outside the thylakoid space.
The Calvin cycle occurs in the stroma.The three-carbon sugar G3P is produced and can be converted to sugars and other organic molecules, ultimately providing the chemical energy and carbon source for all of life.
Therefore, we can confirm that photosynthesis will transform solar energy into organic matter thanks to a structure inside the cell called chloroplast.
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if the experimental population of e. coli lacks an f factor or f plasmid, and if bacteriophages are excluded from the bacterial cultures, how would beneficial mutations be transmitted horizontally to other e. coli cells?
Beneficial mutations be transmitted horizontally to other e. coli cells by means of transformation.
What is transformation?Bacterial transformation is the transfer of free DNA released from a donor bacterium into the extracellular environment, usually leading to the assimilation and expression of newly acquired traits in the recipient bacterium.
Transformation of bacteria relies on the natural ability of the bacterium to release DNA, which is taken up by another competent bacterium. Successful transformation depends on the competence of the host cell. Competence is the ability of cells to incorporate bare DNA into the transformation process. Intrinsically transformable organisms spontaneously release DNA by late stationary phase autolysis. Some bacteria, including Escherichia coli, have been artificially treated in the laboratory to use chemicals such as calcium, to apply strong electric fields (electroporation), or to apply heat shocks to induce phenotypes. Electroporation or heat shock enhances potency by increasing cell wall permeability and allowing donor DNA entry.To know more about transformation visit:
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Complete the Biomolecule Chart below and fill in the missing sections. Use notes to complete.
ELEMENTS
MONOMER
POLYMER
FUNCTION
EXAMPLES
CARBOHYDRATES
CHO ( 12:1 )
DISACCHARIDE
POLYSACCHARIDE:
Glucose (Sugar),
Cellulose,
Starch, Glycogen
:: TRIGLYCERIDE
LIPIDS
GLCER YOL
3-FATTY
ACIDS
Source of
Long-term
Energy
::
PROTEINS
FATS, OILS, STERIODS, WAXES
:: SOURCE OF SHORT-TERM ENERGY
CHON
DNA & RNA
POLYPEPTIDE
Eggs, Meats,
Fish, Nuts
IMMUNITY, REGULATES HORMONES, ENZYMES
BUILDS & REPAIRS CELLS
NUCLEIC
ACIDS
NUCLEOTIDE
Genetic
Information
& make
proteins
DNA & RNA
:: AMINO ACIDS
CHO (More CH, Less O)
CHONP
MONSACCHARIDE
Answer:
Carbohydrates
Cilia and flagella move...
A) In opposite directions of the cell membrane
B) When the bending of microtubules is powered by ATP
C) In the same direction of the cell membrane
D) When the contractions of the basal body triplets are powered by ATP
E)When the central pair of microtubules produce ATP
Answer:
A in opposite direction of the membrane
What does it mean that water has a high heat capacity? Why is it important for life on Earth?
Explanation: The high specific heat of water means that it requires a large amount of heat to raise the temperature of water. This helps the temperature of the environment from becoming too hot or too cold. Also, humans are about 66% water, thus this property of water helps us regulate our body temperature too.
Hoped this helped!BryannaSalaz
Many people try to eliminate fat from their diets. Which is one reason it is
necessary for humans to eat fat?
Fats are carbohydrates, which give the body energy. They also protect the organs and keep the body warm :)
Summarize how the nervous system interacts with at least 3 other systems in the body.
The nervous system interacts with other systems of the body as follows:
digestive system - the nervous system initiates the sensation of hunger in the body by coordinating the contraction of the smooth musclesmusculoskeletal system - the nervous system controls the contraction and relaxation of the smooth musclesrespiratory system - the nervous system controls the respiratory system by increasing or decreasing the respiratory depending on the concentration of oxygen or carbon dioxide in the body.What is the nervous system?The nervous system is the system that controls the activities of all other systems of the body.
The nervous system consists of two parts;
the central nervous system - made up of the brain and the spinal cordthe peripheral nervous system - consists of the sensory neuron and motor neurons as well the smooth muscles and the skeletal muscles.Impulse from outside or within the body is first sent to the central nervous system which interprets and sends out messages to the other body system to respond.
The central nervous system integrates ad coordinates the activities of the other body systems such as the respiratory system, the digestive system, the musculoskeletal system, the excretory system, etc.
Signals are sent to these systems from the central nervous system resulting in the action of these systems, for example, rapid breathing, bowel movement, etc.
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why must the viruses enter host cells
A. they are pathogens and seek to infect others
B. They are to small to survive on their own
C.They cannot reproduce on their own
D. They cannot catch food on their own
Answer: C. They cannot reproduce on their own
Explanation:
Viruses enter the cell via endocytosis because they lack the machinery required to reproduce.
They transfer the genetic material to the host cell which causes the cell to create the virus.
Some poisonous plants harm people and animals because they produce compounds that are structurally similar to amino acids. Possible reasons why these compounds are toxic include that they _______________ select all correct phrases.
Possible reasons why they produce compounds that are structurally similar to amino acids are toxic include that they
chаnge the finаl folded shаpe of the proteinimpаir the function of proteinsаre recognized by аmino аcyl tRNА synthetаses, аnd аre linked to а tRNА moleculeWhat is the function of protein for some poisonous plants?Plаnts hаve evolved to synthesize а vаriety of noxious compounds to cope with unfаvorаble circumstаnces, аmong which а lаrge group of toxic proteins thаt plаy а criticаl role in plаnt defence аgаinst predаtors аnd microbes. Up to now, а wide rаnge of hаrmful proteins hаve been discovered in different plаnts, including lectins, ribosome-inаctivаting proteins, proteаse inhibitors, ureаses, аrcelins, аntimicrobiаl peptides аnd pore-forming toxins.
The function of а protein is dependent upon the shаpe into which the chаin of аmino аcids folds. Mаny noncovаlent interаctions аre is responsible for mаintаining the protein's shаpe. When we hаve isolаted а protein from аn orgаnism in its proper shаpe, аnd we hаve treаted it with аn enzyme thаt selectively tаrgets аnd breаks only the peptide bonds in the proteins. The protein would not retаin its shаpe under these conditions. While the noncovаlent bonds determine the shаpe of а protein, the peptide bonds аre required to hold the аmino аcids together.
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which may lead to an increase in the carrying capacity of the global human population? i. consuming food at a lower trophic level ii. technological advancement iii. reduction in per capita consumption rate
i. consuming food at a lower trophic level ii. technological advancement iii. reduction in per capita consumption rate. All of these may lead to an increase in the carrying capacity of the global human population.
Demographers often concentrate on four key variables when attempting to predict changes in population size: fertility rates, death rates (life expectancy), the population's beginning age profile (whether it is relatively elderly or young, to begin with), and migration.
Is there an exponential increase in the human population?
The number of people on the planet is increasing exponentially. Through migration, agriculture, technological advancements in medicine, and communication, humans have enhanced the world's carrying capacity. We can forecast population increase using a population's age distribution.
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i. consuming food at a lower trophic level ii. technological advancement iii. reduction in per capita consumption rate. All of these may lead to an increase in the carrying capacity of the global human population.
Demographers often concentrate on four key variables when attempting to predict changes in population size: fertility rates, death rates (life expectancy), the population's beginning age profile (whether it is relatively elderly or young, to begin with), and migration.
Is there an exponential increase in the human population?
The number of people on the planet is increasing exponentially. Through migration, agriculture, technological advancements in medicine, and communication, humans have enhanced the world's carrying capacity. We can forecast population increase using a population's age distribution.
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How many gigaton of carbon do animals produce.
Answer:
7.1 gigatons of CO2 equivalent per year
Explanation:
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what happens when RNA is edited?
Answer: One type, insertion/deletion RNA editing, involves the insertion or deletion of nucleotides and actually changes the length of the target RNA. The second type, RNA editing by base modification, changes an encoded nucleotide into a different nucleotide, without changing the overall length of the RNA.
Explanation:
Answer:
Deamination produces an adenosine-to-inosine substitution, one of the most common substitutions in RNA editing.
how do you investigate osmosis
Place the dried apricots and raisins in clean water and let them soak for a while. After that, add them to a salt- or sugar-concentrated solution. When submerged in pure water, endosmosis causes each of them to absorb water and enlarge.
What is the osmosis observation?Osmosis is the process by which solvent molecules move from a region of higher concentration to an area of lower concentration across a semi-permeable membrane.
Osmosis, on the other hand, simply moves water molecules, whereas diffusion moves both particles and substances. The purpose of this experiment is to examine how the potato cells respond to various sugar concentrations via the osmosis mechanism.
Osmosis is the process by which water molecules pass across a cell's partly permeable membrane from a solution with a high concentration of water molecules to one with a lower concentration.
Particles migrate from a region of higher concentration to one of lower concentration in both diffusion and osmosis.
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Phospholipids are found in a limited number of foods. They consists of a glycerol backbone with two fatty acids and a compound that contains phosphate. Why are they important in food and in the body?.
A vital part of the cell membrane are lipids. Typically, the structure consists of a glycerol backbone, two hydrophobic fatty acid tails, and a phosphate group (hydrophilic). Phospholipids are hence amphipathic.
What is phospholipids and its function?Major membrane lipids called phospholipids are made up of lipid bilayers. More crucially, this fundamental cellular structure makes it possible for numerous cellular functions to take place in subcellular compartments while also acting as a barrier to guard the cell against various environmental insults.
What types of food are phospholipids?Foods like beef, eggs, seed oils, and seafood include phospholipids. Some plant meals also contain them, albeit in much lesser quantities. Supplements may also contain phospholipids. The sources of marine phospholipids include fish, algae, and shellfish like krill.
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Explain whether you think the most important advances of the 21st-century will be new sources of energy or a more efficient use of source they already exist
Throughout the opinion, new energies will become more important because they produce less pollution than currently used energy sources and because the careless use of non-renewable energy sources could result in a future energy shortage.
Non-renewable Energy- Energy content of non-renewable materials is high. Compared to renewable energy sources like solar or wind, resources like coal and oil generally give us more energy. Coal mining, oil sales, and the building of pipelines for natural gas can all result in enormous riches.
The time-consuming nature of non-renewable fuel is one of its main drawbacks. It takes a long time to mine coal, look for oil, install oil drills, construct oil rigs, insert pipes to extract natural gas, and transport it. It also demands a great deal of work.
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The element carbon has three natural isotopes: C-12, C-13, and C-14.
Use the periodic table to find the number of protons in a carbon atom.
Then make a drawing to show the nuclei of the three carbon isotopes.
Your drawing should convey the number of protons and neutrons in each of the three different nuclei.
Answer: See Below
Explanation:
1. There are 6 protons in a carbon atom (The # of protons is the same as the atomic number).
2. Attached below. Red circles are protons blue are neutrons.
Understand that the number following the C (12,13,14)
refers to the total number of protons and neutrons in the atom. Proton number does not change only neutrons can.
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Determine the empirical formula of a 28.00 gram sample containing 22.90 grams carbon and 5.10 grams hydrogen.
Explanation:
The compound is found to be composed of 75% carbon and 25% hydrogen.
100 g of the compound contains 75 g of carbon and 25 g of hydrogen.
The atomic masses of carbon and hydrogen are 12 g/mol and 1 g/mol respectively.
The number of moles of C =
12 g/mol
75 g
= 6.25 moles
The number of moles of H =
1 g/mol
25 g
= 25 moles
The mole ratio C:H=6.25:25=1:4
The empirical formula of the compound is CH
4
.
