Potassium is a mineral which appears in abundance in all living plant and animal cells. The human body uses it to promote regular heartbeat, help build muscles, help contract muscles, regulate blood pressure, and control the water balance in body tissues and cells. Calcium is a mineral that primarily functions in your body by making your bones and teeth hard. The rest is in your blood and soft tissues; it helps your muscles contract and your blood clot, and helps your nervous system work properly. According to your knowledge of atomic structure, explain why the calcium atom is smaller than potassium atom.
Answers
Answer:
Calcium also shares the same fourth period in the periodic table in which potassium present. The size of the atomic radius decreases from left to right in the period from left to right. Potassium present left to the calcium in the fourth period.
The reason for the decrease in the atomic radius due to the fact though electrons and protons increases but the valence shell remains the same from moving from left to right, therefore, as the net charge increases with the increase in the electrons result in shrinking of the valence shell and resulting in the decrease of the size of the atom.
Related Questions
Question 1 A heterozygous yellow-seeded plant is crossed with a homozygous yellow seeded plant. i. ii. Question 2 Complete the punnet square and write the genotypic and phenotypic ration for the possible offsprings. (3 marks) Genotypic ration Phenotypic ration What is the probability of having a pure breeding green seeded offsprings (2 marks) What is the probability of having a yellow-seeded plant in F2 generation, when a true breeder from F1 is crossed with a non-true breeding yellow seeded plant? (2 marks)
Answers
Answer:
Explanation:
To solve this problem, let's represent the heterozygous yellow-seeded plant as "Yy" and the homozygous yellow-seeded plant as "YY."
i. When crossing a heterozygous yellow-seeded plant (Yy) with a homozygous yellow-seeded plant (YY), we can set up a Punnett square to determine the possible offspring genotypes:
Y Y
y Yy Yy
y YY YY
ii. The genotypic ratio is 2:2 or 1:1 for the possible offspring genotypes: Yy and YY.
The phenotypic ratio is also 2:2 or 1:1 for the possible offspring phenotypes: yellow-seeded (YY and Yy).
Question 2:
To determine the probability of specific outcomes, we need additional information about the parental genotypes and their inheritance patterns. Please provide the genotypes of the true breeder from F1 and the non-true breeding yellow-seeded plant for a more accurate calculation.
what impacts do the amounts of available energy, water, and oxygen have on an ecosystem?
Answers
Answer:
What impact do the available amounts of energy, water, and oxygen have on an ecosystem? They act as limiting factors. ... increasing the biodiversity of the ecosystem.
Which best represents the appearance of the moon on July 11, 2011?
Responses
Answers
The Moon was in a waxing gibbous phase on particular day. the majority the night sky visible, setting a few hours before daybreak. The moon is in this phase when it is more than 50% lit, but it is not yet a full moon.
Which one most accurately depicts the moon's appearance on July 25, 2011?On July 25, 2011, the moon is in the Waning Crescent phase. The moon is 24.06 days old, 30.42% lit, and tilted -32.223° on this day. On July 25, 2011, the moon will be in a Waning Crescent phase.
What color was the moon on December 11, 2011?On December 11, 2011, the moon is in the Waning Gibbous phase.
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60% of the moths in a population are white (WW, Ww) 40% of the moths in the population are
black (ww). After a 3 year period, 65% of the moths are white and 35% are black. What is the frequency of the "W" and "w" alleles at the beginning and after 3 years?
Answers
At the beginning, the frequency of the "W" allele can be calculated as follows:
Let p represent the frequency of the "W" allele. Since 60% of the moths are white (WW, Ww), the frequency of the "W" allele can be expressed as \(p^2\) + 2pq, where q represents the frequency of the "w" allele. Given that 60% of the moths are white, we can set up the equation 0.6 = \(p^2\) + 2pq.
After 3 years, the frequency of the "W" allele is 65%. Using the same equation, we can set up the equation 0.65 = \(p^2\) + 2pq. Solving these equations will give us the frequency of the "W" and "w" alleles at the beginning and after 3 years.
In a population, the frequency of alleles can change over time due to various factors such as natural selection, genetic drift, and migration. In this scenario, we are given the initial frequencies of white and black moths in the population and the frequencies after 3 years.
By using the Hardy-Weinberg equation, which relates allele frequencies to genotype frequencies, we can determine the frequencies of the "W" and "w" alleles.
The equation p^2 + 2pq represents the frequency of individuals with the "W" allele (WW, Ww), and 2pq represents the frequency of individuals with heterozygous genotype (Ww). By solving the equations, we can find the frequencies of the alleles at the beginning and after 3 years.
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Question: What do all organisms
have in common?
Answers
Answer:
All living things have certain traits in common: Cellular organization, the ability to reproduce, growth & development, energy use, homeostasis, response to their environment, and the ability to adapt. Living things will exhibit all of these traits.
A population is increasing in a pattern of logistic growth. What happens when the population reaches carrying capacity?
A
The size of the population remains at or near its maximum.
B
The growth rate increases because deaths increase.
C
The size of the population continues to grow exponentially.
D
The growth rate decreases because births increase.
Answers
Answer:
The answer would be A: The size of the population remains at or near its maximum.
If a population is increasing in a pattern of logistic growth and reaches up to the carrying capacity (k), the size of the population remains at or near its maximum. So, the correct option is A.
What is Carrying capacity (k)?Carrying capacity (k) is the maximum number of individuals that can be supported by a habitat. The carrying capacity of habitat depends on two factors i.e. food to eat and space to live.
Logistic growth is adapted for a saturated environment. Here, the rate of competition is extremely high. After a population reaches a carrying capacity, in that condition a population size is maximum but the growth rate is maximum at k/2.
Therefore, if a population is increasing in a pattern of logistic growth and reaches up to the carrying capacity (k), the size of the population remains at or near its maximum.
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Which of the following best describes the term 'polymer'?
A. A small monomer.
B. Small molecules.
C. A large monomer.
D. A large molecule made of many monomers.
Answers
Answer: A large molecule made of many monomers.
Explanation:
2.The horned lizard is often called a horned toad because of its short, fat body and small tail.
When this lizard finds a coyote, it will spray blood from its eyes at the coyote. Then the lizard will run a short distance and stay very still to blend into the background.
Why does the horned lizard do this?Lector inmersivo
(1 Punto)
Horned lizards do this to play with the coyote.
Horned lizards do this to attract other horned lizards.
Horned lizards do this to catch and eat the coyote.
Horned lizards do this to escape from the coyote.
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Do plants take in air with their roots?
Answers
Answer:
No
Explanation:
No, plants do not take in air with their roots. Roots are designed to absorb water and minerals from the soil. In order to get the air and carbon dioxide they need for photosynthesis, plants have specialized structures called stomata in their leaves and stems that allow air to enter and exit. These stomata regulate the movement of gases into and out of the plant, so the plant can take in the carbon dioxide it needs and release the oxygen it produces.
Albumin is a protein found in egg whites
Which of the following best describes the molecular structure of albumin?
Choose 1 answer
A set of three fatty acids attached to a molecule of slycerol
A series of monosaccharides linked together
A sequence of nucleotides twisted into a helical structure
A folded chain of amino acids
Answers
Answer:
A folded chain of amino acids
Explanation:
The statement 'a folded chain of amino acids' the following BEST describes the molecular structure of albumin.
A protein is a biomolecule polymer composed of a long chain of amino acids linked by peptide bonds.Proteins have specific tridimensional structures (i.e., tertiary structures) produced during a process called protein folding.Protein folding refers to the cellular mechanism by which a protein folds to become a functionally active protein in its native tridimensional structure.In conclusion, the statement 'a folded chain of amino acids' the following BEST describes the molecular structure of albumin.
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What happens in the energy harvesting phase of glycolysis?
O Glucose is transformed into fructose diphosphate.
O Fructose diphosphate splits into two 3-carbon molecules.
O ATP molecules are broken down to ADP and a phosphate group.
O Glyceraldehyde 3-phosphate is converted into pyruvate.
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The energy payoff phase of glycolysis consists of five additional steps and results in the formation of four ATP, two NADH + H+, and two pyruvate molecules. Substrate level phosphorylation is the process by which ATP is produced from the transfer of a phosphate group from a substrate molecule in a metabolic pathway.
Through a sequence of processes known as glycolysis, glucose is divided into two pyruvate molecules, each of which has three carbons. The vast majority of creatures on the planet today use glycolysis, which is an old metabolic route that originated long ago. 2,3 2,3 start superscript, 2, comma, 3, end superscript
Glycolysis is the initial step in the process of cellular respiration in organisms. However, many anaerobic organisms—organisms that do not use oxygen—also contain this route since glycolysis does not require oxygen.
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The first type of life on Earth was
Answers
Answer:
Putative fossilized microorganisms
Explanation:
they were found in hydrothermal vent precipitates
Hope this helped a little!
Type the correct answer in the box. Spell all words correctly.
What is a close relationship between two organisms that live together called?
The close relationship between two organisms that live together is called
Reset
Next
Answers
Answer:
symbiosis.
Explanation:
The term that you are referring to is symbiosis. (a symbiotic relationship)
Symbiosis is a proximate and often long-term interaction between two or more different biological species.
All cells require a nitrogen source to grow. The preferred nitrogen source for E. coli is an ammonium salt (e.g. NH4Cl ). The NH 4 is assimilated into cellular metabolism by glutamine synthetase (GS), which catalyzes the synthesis of glutamine from glutamate, NH 4, and ATP. Glutamine then serves as a precursor to many compounds such as histidine, tryptophan, and nucleotides. These compounds control the activity of GS by feedback inhibition. Therefore, GS responds to changes in the nitrogen balance within cells. Identify the correct feedback inhibition mechanism that controls GS and its advantage for E. coli grown in a medium with a high histidine concentration. Assume that glucose and NH, are not limiting.
A. GS is controlled by concerted feedback inhibition. Histidine alone does not alleci GS. Therefore. E. coli growth will be unaffected.
B. GS is controlled by sequential feedback inhibition. Complete inhibition of GS by histidine will impair NH+ assimilation and impair E. coli growth.
C. GS is controlled by cumulative feedback inhibition. Therefore, histidine will inhibit GS partially. The remaining GS activity can support NH+, assimilation and E. coli growth.
D. GS is controlled by enzyme multiplicity. Only histidine-responsive GS will be shut down. The other GS isoforms will remain active to support E. coli growth.
Answers
Answer:
C.
Explanation:
The glutamine Synthetase of E. coli can collectively and totally be hindered and inhibited by various and numerous nitrogen-containing compounds like histidine, tryptophan, glycine, alanine, etc at optimum concentrations. But, individually at higher concentrations, these inhibitors can only inhibit the catalytic enzyme action partially. In this way, GS is constrained by total feedback restraint. Consequently, histidine will repress GS halfway. The excess GS movement can uphold NH+, absorption, and E. coli growth development.
will All mutations become more common in a population.
Answers
Answer:
False
Explanation:
Mutations are changes in the genetic (nucleotide) sequence of the genome of an organism. According to their effects, mutations can be divided into beneficial, neutral and detrimental for the fitness of the organism, i.e., its ability to survive and reproduce in a given environment. Moreover, mutations can also be classified according to the type of cell that suffers the mutation into 1-somatic mutations that occur in somatic cells and are not inherited, and 2-germinal mutations that occur in germinal cells (i.e., gametes) which can pass to the next generation. In regard to the question above, only those mutations that occur in the germline and are beneficial for the organism (in the environment in which it lives) are expected to become more common in a population.
Which of the following is not a suggested strategy for detecting a communicable disease?
Get tested at a doctor's office for suspected infectious disease.
Investigate the source of exposure to a communicable disease.
OUse a pedigree chart to track the disease through family members.
OUse contact tracing to detect a disease moving through a community.
Answers
The suggested strategy for detecting a communicable disease that is NOT accurate is: Use a pedigree chart to track the disease through family members.
What are the communicable disease?While a pedigree chart can be useful in understanding the inheritance of genetic diseases, it is not a recommended strategy for detecting a communicable disease.
Therefore, The other options mentioned in the question (getting tested at a doctor's office for suspected infectious disease, investigating the source of exposure to a communicable disease, and using contact tracing to detect a disease moving through a community) are all valid strategies for detecting and controlling the spread of communicable diseases.
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Wetlands perform a major ecosystem service of trapping and filtering water as it passes through the wetland area. True
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It is true that wetlands perform a major ecosystem service of trapping and filtering water as it passes through the wetland area.
Wetlands include a variety of benefits and values that are frequently overlooked. They are extremely important ecosystem elements. This is largely due to their habitat for fish and other species and for safeguarding water quality, preventing erosion, storing floodwaters, and recreation. The way they filter and gather material from runoff water helps prevent mud from blocking lakes and reservoirs downstream, and their purifying function provides natural pollution management. Wetlands aid in decreasing soil erosion downstream by slowing water flows.
Some wetlands help flood management by holding extra water during storm events, especially on floodplains and coastal locations. Many wetlands temporarily store water, allowing water to evaporate or percolate into the earth. This can lessen the storm's peak flooding.
Hence, renewal of resources help in continuity of life.
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A zebra and a donkey can successfully mate to produce offspring known as a zonkey. Zonkeys are infertile, display a mixture of donkey and zebra traits, and have a different number of chromosomes from both parent species. Would zonkeys be classified as their own species? Explain with at least one full sentence.
Answers
Zonkeys are the offspring produced from a cross between a zebra and a donkey. These are classified as a separate species as it shows characteristic
What are Zonkeys?A zonkey is a offspring produced from the cross between a zebra and a donkey. Donkeys are closely related to zebras and both of these animals belong to the horse family.
Zonkeys are the used as beasts of burden (work animals) because of their great strength and stamina to hold heavy weights. It is also believed that they inherit resistance to some pests and diseases as well from their zebra fathers. Some zoos also use them to offer rides to the public.
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What do scientists learn from ice core data?
A. The temperature in the past
B. The size of glaciers
C. The composition of the atmosphere in the past
Answers
Answer:
A and C are both correct
Explanation:
Hope this helps!
Clams, snails, and oysters are classified in this animal phylum.A) MollusksB) EchinodermsC) ArthropodsD) Porifera
Answers
Subject: Animals, Animal Classification.
Clams, snails, and oysters are mollusks, part of the phylum Mollusca.
Mollusca is the second-largest phylum of invertebrates, after Arthropoda.
Mollusks have three defining characteristics:
• A ,mantle,, used for breathing and excretion.
,• A ,radula,, used for feeding
,• A particular structure of the nervous system,, with two cords of paired ganglia.
There are 10 main classes of mollusks, seven living and three extinct:
• Gastropoda,: ,snails, and slugs.
,• Bivalvia,: ,clams, oysters,, etc.
,• Polyplacophora,: chitons.
,• Cephalopoda,: squids, octopuses, nautiluses, etc.
,• Scaphopoda,: tusk shells
,• Cricoconarida, (extinct)
,• Aplacophora
,• Monoplacophora
,• Rostroconchia, (extinct)
,• Helcionelloida, (extinct)
This means A) Mollusks is the right answer.
Answer:
Mollusks (b)
Explanation:
PF
20.
_Cell division in prokaryotic cells is
a. Sexual
b. Asexual
C. Mitosis
d. Interphase
Answers
Answer:
it's binary fission
because --The cell division process of prokaryotes, called binary fission, is a less complicated and much quicker process than cell division in eukaryotes. ... The single, circular DNA chromosome of bacteria is not enclosed in a nucleus, but instead occupies a specific location, the nucleoid, within the cell.
Compare and contrast the therapeutic effects of drugs used to treat growth failure versus acromegaly.
Answers
A disease called acromegaly is brought on by an excess of growth hormone produced by the body.
What is growth failure versus acromegaly?One of these medications tells the pituitary gland to make less growth hormone, and it could even shrink a pituitary tumor.
GH, which is mostly produced in the pituitary gland, regulates how quickly the body grows. Adults who have too much of this hormone develop larger bones, cartilage, bodily organs, and other tissues.
Therefore, acromegaly is overcome by growth failure and excess of growth hormone produced by the body.
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a) What are the bases of mRNA coded for by this section of DNA, before the
mutation? Hint: In RNA, A pairs with U.
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Answer:
DNA, before the
mutation? Hint: In RNA, A pairs with U.
What are economic importance of crayfish
Answers
I need an answer. I am not in any hurry, take your time.
Which structure is thick to protect some of the reproductive structures in flowers?
A. anther
B. style
C. petal
D. sepal
Answers
Sepal: The outer parts of the flower (often green and leaf-like) that enclose a developing bud.
The answer is Sepals, these are located at the base of the flower and protect the flower bud.
The density of gas particles in a section of Earth's atmosphere decreases. Which of the following is the most likely explanation for this event?
The air pressure in that section of Earth's atmosphere decreased.
The air pressure in that section of Earth's atmosphere increased.
The total number of gas particles in Earth's atmosphere decreased.
O The total number of gas particles in Earth's atmosphere increased.
Answers
The most likely explanation for the decrease in the density of gas particles in a section of Earth's atmosphere is that the air pressure in that section of the atmosphere decreased.
Density is defined as mass per unit volume. In the case of a gas, density is directly related to the number of gas particles (molecules or atoms) present in a given volume. When the air pressure decreases, it means that there are fewer gas particles exerting force per unit area. As a result, the density of gas particles in that section of the atmosphere decreases.
Air pressure is the force exerted by the gas particles on the walls of the container or the surroundings. It is influenced by several factors, including temperature, altitude, and the presence of other gases. Changes in these factors can cause fluctuations in air pressure. For example, if there is a decrease in temperature, the gas particles lose kinetic energy, which leads to decreased pressure and density.
It is important to note that the total number of gas particles in Earth's atmosphere does not necessarily change significantly over short periods of time. The atmosphere is composed of a vast number of gas molecules, and while there may be variations due to natural processes, such as volcanic eruptions or biological activities, these changes are relatively small compared to the overall composition of the atmosphere.
Therefore, the most likely explanation for the decrease in density of gas particles in a section of Earth's atmosphere is a decrease in air pressure, which can occur due to various factors such as weather systems, changes in altitude, or movement of air masses.
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Electron microscopes can reveal details
Answers
Answer:
Answer is on the pic
Explanation:
I hope it's helpful!
Please solve this worksheet
Answers
In complete dominance, one dominant allele in the genotype is enougth to express the dominant phenotype. 1) Two phenotypes: normal pigmentation-brown eyes and normal pigmentation-blue eyes. 2) The chances of having a child with normal pigmentation and blue eyes is 4/16.
What is complete dominance?When the dominant allele completely masks the recessive allele, we talk about complete dominance.
This is an inheritance pattern in which individuals that are heterozygous for a particular gene and express the dominant trait. The dominant allele is hiding the expression of the recessive allele.
In the e xposed example, we have two independent genes that express complete dominance.
Gene 1 codes for pigmentation
A is the dominant allele and codes for normal pigmentationa is the recessive allele and codes for albinismGene 2 codes for eye color
B is the dominant allele and codes for brownb is the recessive allele and codes for blueGenotype Phentoype
Homozygous dominant ⇒ AA Normal pigmentationHeterozygous ⇒ Aa Normal pigmentationHomozygous recessive ⇒ aa AlbinoHomozygous dominant ⇒ BB Brown eyesHeterozygous ⇒ Bb Brown eyesHomozygous recessive ⇒ bb Blue eyes- Man: Heterozygous for pigmentation and eye color ⇒ AaBb
- Woman: Homozygous dominant for pigmentation and heterozygous for eye color ⇒ AABb
Cross: man with woman
Parentals) AaBb x AABb
Gametes) AB, Ab, aB, ab AB, AB, Ab, Ab
Punnett square) AB Ab aB ab
AB AABB AABb AaBB AaBb
AB AABB AABb AaBB AaBb
Ab AABb AAbb AaBb Aabb
Ab AABb AAbb AaBb Aabb
F1) Genotype
2/16 individuals are expected to be homozygous dominant for both traits AABB4/16 individuals are expected to be homozygous dominant for pigmentation and heterozygous for eye color, AABb2/16 individuals are expected to be heterozygous for pigmentation and homozygous dominant for eye color, AaBB4/16 individuals are expected to be heterozygous for both traits, AaBb2/16 indiviuals are expected to be homozygous dominant for pigmentation, and homozygous recessive for eye color, AAbb2/16 indiviuals are expected to be heterozygous for pigmentation, and homozygous recessive for eye color, Aabb.Phenotype
12/16 individuals are expected to have normal pigmentation and brown eyes, A-B-. 4/16 individuals are expected to have normal pigmentation and blue eyes, A-bb.1) There are two possible phenotypes:
normal pigmentation and brown eyesnormal pigmentation and blue eyes2) The chances of having a child with normal pigmentation and blue eyes is 4/16 = 2/8 = 1/4 = 25%.
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choose all that apply
the skeletal system is mad up of
A.bones
B.muscle
C.organs
D.nerves
Answers
During DNA replication, two extra guanine bases are added to the DNA. What type of mutation is this? A. Nondisjunction mutation B. Silent mutation C. Point mutation D. Frameshift mutation
Answers
Answer:
frameshift mutation
Explanation: