salt has cubed block like structure, what crystal system is it a part of?
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Answer: Sodium chloride crystals are cubic in form. Table salt consists of tiny cubes tightly bound together through ionic bonding of the sodium and chloride ions. The salt crystal is often used as an example of crystalline structure. The size and shape of salt crystals can be modified by temperature.
Explanation: Please tell me if this helped
Answer:
Explanation:
Salt has cubed, block-like crystals. It is part of the isometric crystal system. Correct Answer: C This type of crystal system is characterized by unit cells in the shape of a cube. Because of this, the system is also called the cubic system. All crystals of the isometric system possess four 3-fold axes of symmetry. The forms involved in this system are the cube, octahedron, dodecahedron, and trapezohedron.
Related Questions
The carbon cycle is one of earth's natural resources that enables all living organisms to inhabit this planet. It is a vital resource. Why?
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in 1987, a group of molecular geneticists at the university of california at berkeley offered support for the idea that anatomically modern humans arose fairly recently in africa, then spread out and colonized the world. the geneticists analyzed genetic samples of 147 women whose ancestors came from africa, europe, the middle east, asia, new guinea, and australia. by estimating the number of mutations that had taken place in the mitochondrial dna (mtdna) of each of these samples, the researchers concluded that
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The researchers concluded that, the genetic diversity observed in the mitochondrial DNA (mtDNA) of the samples indicated that all individuals shared a common maternal ancestor who lived in Africa approximately 200,000 years ago. This supported the hypothesis that anatomically modern humans originated in Africa and subsequently migrated to other regions of the world.
The analysis of genetic samples from diverse populations allowed the researchers to trace the genetic lineage back to a single common ancestor. Mitochondrial DNA is passed down exclusively from the mother to her offspring, making it a useful tool for studying human ancestry and tracing maternal lineages.
The estimated number of mutations in the mtDNA samples provided insights into the time since the most recent common ancestor. By comparing the number of mutations across different populations, the researchers could estimate the time it took for those mutations to occur, suggesting a recent African origin for modern humans.
This study provided genetic evidence supporting the Out-of-Africa theory, which posits that modern humans evolved in Africa and then dispersed to other parts of the world, replacing or assimilating other hominin populations they encountered along the way.
It's worth noting that subsequent studies and advancements in genetic research have further refined our understanding of human migration and ancestry. However, the 1987 study played a crucial role in providing evidence for the African origin and subsequent global spread of anatomically modern humans.
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. G0 is a non-dividing phase of the cell cycle where the cell is not preparing to replicate. Cells may enter G0 during G1 and remain for the rest of their life, or a signal may cause them to re-enter G1 and continue in the cell cycle.
Consider two cells: a stomach-lining epithelial cell dividing more than twice a day and a liver cell dividing every year or two. Which cell is likely to be in G0 phase and why?
Type your answer here.
A large circle shows the cell cycle model, with sections for the G 1 phase, S phase, G 2 phase, and cell division or M phase. Adjacent to the large circle at the G 1 phase is a small circular arrow, labeled G zero phase.
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The liver cell is more likely to be in G₀ phase compared to the stomach-lining epithelial cell.
Why is a liver cell is capable of dividing?This is because the stomach-lining epithelial cell needs to divide more than twice a day to replace the cells that are lost due to wear and tear. Therefore, it needs to keep progressing through the cell cycle and cannot afford to remain in G₀ phase for a long time.
On the other hand, the liver cell divides very slowly, and may only divide once every year or two. Hence, it is more likely to enter G₀ phase during the cell cycle and remain there until it receives a signal to re-enter G₁ and continue with the cell cycle.
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Which of the following processes provides a long-term response to changes in blood pressure?
A) neural controls
B) baroreceptor-initiated reflexes
C) chemoreceptor-initiated reflexes
D) renal regulation
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renal regulation provides a long-term response to changes in blood pressure.
Systemic arterial pressure is a sensitive and dynamic physiologic measure that is affected by a wide range of variables. Particularly, a wide range of mechanisms that impact cardiac output, total peripheral resistance, and cardiovascular capacitance are responsible for short-term fluctuations in arterial pressure. However, over time, the majority of these effects can be mitigated or made up for by suitable renal modifications to blood volume, ECFV, and sodium balance. Normal arterial pressure can be maintained as long as the mechanisms controlling sodium excretion can keep the sodium balance by correctly adjusting the sensitivity of the pressure-natriuresis relationship. However, abnormalities that impair the kidneys' capacity to maintain sodium balance might lead to the kidneys' need for an increased arterial pressure to restore net salt and water balance.
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What planet comes after earth
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Which of the following statements is TRUE?
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Answer:
B: Hyperosmotic solutions may cause the cell to shrink.
Explanation:
Which of the following characteristics apply mainly to invertebrates? (Choose all that
apply.)
A.) many different body plans that display all types of symmetry
b.) backbone and inner skeletal structure
c.)lack of skeletal structure in their bodies
d.)limited to no development of organ systems
Answers
Answer:
c and d
Explanation:
because they are cold blooded n have no back bone
The characteristics that mainly apply to invertebrates are as follows:
Lack of skeletal structure in their bodies.Limited to no development of organ systems.Many different body plans display all types of symmetry.Thus, the correct options are A, C, and D.
What are Invertebrates?Invertebrates may be defined as those forms of living organisms that lack a backbone, spinal cord, and central nervous system.
Invertebrates generally have bilateral or radial symmetry. They can be asymmetrical as well. They only have either incomplete or complete digestive systems. Invertebrates completely lack a skeletal system.
Therefore, the correct options for this question are A, C, and D.
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What are two tools that can be used to measure wind direction?
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Answer:
it should be a wind vane and an anemometer.
Explanation:
The anemometer measures wind speed and the wind vane helps determine what direction the wind is coming from.
In the Holliday model of homologous recombination, after crossing over occurs, cleavage and rejoining reestablish two separate chromosomes. These processes results in __________
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In the Holliday model of homologous recombination, after crossing over occurs, cleavage and rejoining reestablish two separate chromosomes. These processes result in resolution.
Holliday junctions are cross-shaped structures that are formed by the exchange of segments of genetic material during a process called genetic recombination. During this process, two DNA double-stranded molecules are broken down into four strands.
Crossovers involve the transfer of genetic material from mother to father and vice versa. Because of this, the genetic makeup of the offspring may differ from that of the parents.
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Did you understand what a control in an experiment was? meowsis
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Answer:
A control in an experiment is a replica used to confirm that the results or changes in the dependent variable/s are caused by the independent variable values or treatments. There are different kinds of controls according to the experiment, for example, no treatment can be applied, or for example in laboratory experiments, there are controls to check that the reactives function properly, making a replica with them but without the sample that is being measured.
Explanation:
Contrapposto is defined as:
O a photographic print process using gum Arabic.
an asymmetrical arrangement of the human figure.
a German term to denote devotional images used to aid prayer.
diagonal lines the recede into fictive space.
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Answer:
an asymmetrical arrangement of the human figure.
Explanation:
Contrapposto is an Italian term and it is use in visual art to describe
an asymmetrical arrangement of the human figure in which the line of the arms and shoulders contrasts with and balances the line of the hips and legs. It was an important sculptural development,it unveiling marks the first time in Western art that the human body is used to expression of relaxed physiological disposition.
Which type of plant tissue contains open vessels that transport water, irons, materials and nutrients throughout a plant
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Of course plants don't have hearts, but they do have vessels which transport water, minerals, and nutrients through the plant. These vessels are the vascular tissue.
Nitrogen from animal wastes or plant an animal tissue
O must be fixed near leguminous plants,
O is lost from the system.
O is fixed by bacteria and fungi in the soil.
O is already fixed and can be used.
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Nitrogen from animal wastes or plant an animal tissue is fixed by bacteria and fungi in the soil.
So, option C is correct one.
How plants and animals get nitrogen ?Since our atmosphere contains 78% of nitrogen but it is very difficult to take directly by plants and animals.Nitrogen is very essential for all living organism.Plants take nitrogen from soil.Some bacteria and fungi are present in the soil who fix nitrogen from the atmosphere and convert it into nitrogen compound.Then this nitrogen from the soil by root system of the plants.Now plant use this nitrogen for synthesis of proteins and other compounds.Animals who feed plants gets this proteins and other nitrogen compound from plants.When plants and animals die , fungi and bacteria present in the soil converts this nitrogenous waste into nitrogenous compound and reuse of nitrogenous compound is repeated again.learn about nitrogenous waste,
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Which of the following is another name for the columns on the periodic table?
Rows
Groups
Periods
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Answer:
i think its either rows or groups but i rlly think its groups
Explanation:
...
What would happen if no insects were resistant to insecticides?
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Two of the most striking examples of resistant insect species are the Colorado potato beetle and the diamondback moth, both of which have developed extensive populations resistant to all synthetic insecticides registered for use against them, as well as biological insecticides like Bacillus thuringiensis.
The elements Hydrogen (H) and Chlorine (CI) combine together to form HCI
(Hydrochloric Acid). Here is the information for each of these elements:
Hydrogen (H): Atomic number: 1; Atomic mass: 1.008
Chlorine (CI): Atomic number: 17; Atomic mass: 35.453
Check all that apply to the bonding of Hydrogen and
Chlorine:
Covalent
Double Bond
Single Bond
lonic
Triple Bond
Answers
Answer:
Covalent & Single bond
Explanation:
Hydrogen has an atomic mass of 1 and needs one more atom to be an octet. Chlorine has an atomic of number 17. On the first ring it has 2 atoms. On the second ring it has 8. and on the third ring it has 7 and needs one more to be an octet. Hydrogen is going to share its one atom with chlorine.
Facilitated diffusion is considered exergonic because; mcq options: it takes ATP to mo ve the solute. proteins are involved. the delta-G value is positive. energy is not required for transport.
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Facilitated diffusion is considered exergonic because energy is not required for transport. In other words, facilitated diffusion occurs when molecules diffuse across the cell membrane from a region of high concentration to a region of low concentration, which is driven by the concentration gradient of the solute.
The diffusion process is facilitated by specialized proteins known as transporters or carrier proteins, which assist in the movement of the solute across the membrane. These proteins undergo conformational changes to allow the solute to pass through the membrane.
However, unlike active transport, facilitated diffusion does not require the input of energy in the form of ATP. Therefore, it is considered an exergonic process, meaning that energy is released during the process. The delta-G value of facilitated diffusion is negative, indicating that it is a spontaneous process that occurs naturally without requiring energy input.
In summary, facilitated diffusion is considered exergonic because it is a spontaneous process that does not require energy for transport and is facilitated by specialized proteins known as transporters or carrier proteins.
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Why do rats have three lobes of liver and humans only have one?
Answers
Explanation:
Although the rat liver is typically lobated2 and its ap- pearance does not resemble that of the human liver, the hepatic lobes of the rat liver have been found to be equivalent to the sectors of the human liver. As rats and humans belong to the class Mammalia, similar em- bryological
the closure of the atrioventricular valves marks the start of
Answers
Answer:
systole
Explanation:
The first heart sound (S1) represents closure of the atrioventricular (mitral and tricuspid) valves as the ventricular pressures exceed atrial pressures at the beginning of systole (point a).
Cấu tạo của đại não người
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Answer:
Explanation:
của bạn đây:
Are there organisms that can be abiotic and biotic? Explain
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Abiotic factors are the non-living parts of the environment that can often have a major influence on living organisms. Abiotic factors include water, sunlight, oxygen, soil and temperature.
Mendel’s pea plants had either purple or white flowers. This means that the plants
The answer is C: have two alleles for the gene.
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Answer:
i think the answer is C
Explanation:
If a stop codon is like a red traffic light, which is most likely a green traffic light during transcriptionA) DNAB) promoterC) mRNAD) nucleotide
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The promoter is most likely a green traffic light during transcription because it is responsible for initiating and regulating the transcription process, allowing RNA polymerase to bind and begin transcribing the DNA sequence into RNA.
During transcription, the DNA molecule is used as a template to synthesize a complementary mRNA molecule. The process begins when RNA polymerase binds to the promoter region of the DNA molecule and begins to read the nucleotide sequence of the template strand.
The RNA polymerase then adds complementary RNA nucleotides to the growing mRNA strand, based on the base pairing rules of A-U and G-C.
In this context, the promoter region of DNA can be considered as a "green traffic light" as it provides the signal for RNA polymerase to initiate transcription. The promoter region contains specific sequences of DNA that serve as binding sites for RNA polymerase, allowing it to attach to the DNA and begin transcription.
On the other hand, a stop codon acts like a "red traffic light" during translation, as it signals the end of the coding sequence and terminates protein synthesis. When the ribosome encounters a stop codon in the mRNA sequence, it releases the newly synthesized protein and disassembles.
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what is the movement of molecules across a barrier such as the semi-permeable cell membrane called
Answers
Answer:
DIFFUSION
Explanation:
Water, carbon dioxide, and oxygen are among the few simple molecules that can cross the cell membrane by diffusion (or a type of diffusion known as osmosis ). Diffusion is one principle method of movement of substances within cells, as well as the method for essential small molecules to cross the cell membrane.
What molecule connects the sugars in a strand of dna?
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Answer:
its connected by non covalent hydrogen bonds
Explanation:
what is the difference between anterior and posterior view?
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A body part's anterior refers to its front, and its posterior refers to its back.
Describe posterior view.These terms for directions are used frequently:
Anterior. at or close to the body's front (front view) Posterior. at or close to the body's back (back view)is it in the front or back?To identify the anterior, picture the body being divided in half from left to right. The tissue on the back slice is posterior, while everything in the front slice is anterior. The back of the body is referred to as posterior, which is the opposite of anterior.What three body planes are there?Coronal (frontal), sagittal (longitudinal), and transverse (axial) planes are the three types of motion.
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27. A researcher is interested in studying how caffeine intake affects test performance, and states his research hypothesis H1: Consuming caffeine will improve test scores a. One-tailed hypothesis tes
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A researcher who is interested in studying how caffeine intake affects test performance, and states his research hypothesis H1: Consuming caffeine will improve test scores is A. One-tailed hypothesis test
The hypothesis states that consuming caffeine will improve test scores, this hypothesis is known as H1 and it is a one-tailed hypothesis test. One-tailed hypothesis test is used to determine if a specific direction of the relationship exists between the variables. In this case, H1 is directional because it suggests that consuming caffeine will improve test scores, the test will determine if the researcher’s hypothesis is supported or rejected. In order to support H1, the test will need to show that there is a significant difference between the scores of the participants who consumed caffeine and those who did not.
The hypothesis test is important because it enables the researcher to make a conclusion about the relationship between the variables being studied. The results of the test will either support the hypothesis or reject it. If the hypothesis is supported, the researcher will be able to state that caffeine intake does improve test scores. On the other hand, if the hypothesis is rejected, the researcher will conclude that caffeine intake does not improve test scores. So therefore the correct answer is A. One-tailed hypothesis test
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Part C. One student wants to change the track so that the potential energy of the marble from 1 point to 5 it's constant explain how the student could change to track so that the potential energy of the marble is constant and explain why that change will keep the potential energy constant?
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The student can alter the track of the marble by making it a level, level track with no slant or decrease. By doing so, the marble will not involvement any alter in height, and so its potential vitality will stay steady.
What is the potential energy constant?Potential energy is subordinate on the stature of an question over the ground or a reference point. When the marble is on an slanted track, it picks up potential vitality because it moves higher and loses potential vitality because it moves lower due to changes in stature.
In the event that the track is flat, the marble will not involvement any alter in tallness, and thus its potential vitality will not alter.
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Melissa and ana are a homosexual couple whose relationship is legally recognized in some states. this reflects a(n) __________.
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Melissa and ana are a homosexual couple whose relationship is legally recognized in some states this reflects Gay rights.
What are privileges of gay couple ?Privileges influencing lesbian, gay, sexually unbiased, and transsexual individuals differ significantly by nation or purview including everything from the lawful acknowledgment of same-sex union with capital punishment for homosexuality. Prominently, as of July 2022, 32 nations perceived same-sex marriage.
The freedoms, which are conceded to individuals who don't have sexual direction just towards the contrary orientation, and that such privileges safeguard them from segregation in the general public are known as the gay freedoms.
The gay freedoms are by and large in the possession of individuals having a place with the LGBTQ people group. American states have lawfully perceived transsexual as an American orientation.
The assertion genuine with respect to the gay freedoms of the LGBTQ Americans is that states lawfully should perceive the expressed orientation of transsexual Americans.
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all livings things are?