Answers
Answer:
Molecules stop moving at freezing point. Helium has the lowest boiling point. The molecules move very quickly at boiling point.
Explanation:
Heating up- molecules move faster. Cooling down- molecules move slower
Related Questions
All living things are made of cells. What might be a major difference between cells that are found in human skin and human nerve cells?
A) human skin cells do not have a nucleus
B) nerve cells do not have a membrane so signals can be sent outside the cell
C) nerve cells are much longer to aid in sending signals to and from the brain
D) skin cells lack cytoplasm since nutrients do not need to pass in intracellular space
Answers
The major difference between cells that are found in human skin and human nerve cells is option D which is skin cells lack cytoplasm since nutrients do not need to pass in intracellular space.
Cells explained.Cells refer to the most small unit in which human existence is base on. Group of cells combine to form tissues.
Cells has three major components and these are nucleus, cytoplasm and cell membrane.
The cell membrane is the layer that surround the cells and these help to control materials that move in and out of the cells.
Cells is the major constituent of living things.
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What scientists are credited with the "base-pairing" rules?
Answers
The "base-pairing" rules of DNA were first proposed by James Watson and Francis Crick in 1953.
The "base-pairing" rules, which describe how the four nitrogenous bases in DNA pair up with each other (A with T, and C with G), were first proposed by James Watson and Francis Crick in their seminal paper published in the scientific journal Nature in 1953.
However, it is important to note that the idea of base-pairing had been suggested earlier by several other scientists, including Erwin Chargaff, who discovered that the amounts of A, T, G, and C in DNA varied between species, and that A always paired with T and G always paired with C in equal amounts. Rosalind Franklin, who produced critical X-ray diffraction images of DNA, also played an important role in elucidating the structure of DNA and contributed to the understanding of base-pairing.
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Before DNA polymerase can begin assembling DNA nucleotides to produce either the Okazaki fragments of the lagging strand or the continuous molecule of the leading strand, which must occur?
DNA polymerase I removes some nucleotides and replaces them with DNA.
Primase constructs a short RNA primer.
DNA ligase forms a covalent bond between two adjacent nucleotides in the same DNA strand.
Covalent bonds must be broken between the two strands of DNA.
DNA polymerase III adds deoxyribonucleotides.
Answers
Before DNA polymerase can begin assembling DNA nucleotides to produce either the Okazaki fragments of the lagging strand or the continuous molecule of the leading strand, b. primase must construct a short RNA primer.
Before the DNA polymerase begins assembling the DNA nucleotides, the DNA template strand must be made available. Primase, a special RNA polymerase that forms RNA primers, has the responsibility of creating these primer sequences to facilitate the binding of DNA polymerase. The following are the steps that occur in the replication of DNA is start initiation, a DNA double helix is denatured, separating the two strands of DNA. This creates a replication fork, which is the site where DNA replication will begin. This is the first stage in DNA replication.
Elongation, in this process, the primer that was created by Primase enables DNA polymerase to begin synthesizing new DNA strands. DNA polymerase adds DNA nucleotides to the 3' end of the primer one by one, creating a new DNA strand. The leading and lagging strands, as well as the Okazaki fragments, are synthesized during this stage.Termination, in this stage, the DNA replication is completed, the termination of the replication is marked by the termination of DNA polymerase activity and the rejoining of the new DNA strands. DNA ligase is an enzyme that links the Okazaki fragments and joins the leading strand with the lagging strand, resulting in the formation of a complete double-stranded DNA molecule.
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How do living things use matter such as carbon, nitrogen, phosphorus and water?
Answers
Answer:
Every living organism is made up of carbon, nitrogen, and phosphates. Nitrogen and carbon are found in amino acids which make up proteins. Phosphates make up DNA and ATP.
Explanation:
How are movement corridors potentially harmful to certain species?
A) They increase inbreeding.
B) They promote dispersion.
C) They spread disease and parasites.
D) They increase genetic diversity.
E) They allow seasonal migration
Answers
Answer:
C. They spread disease and parasites.
Explanation:
Movement corridors are potentially harmful to certain species because they spread disease and parasites.
Hope this helps!
A4232 Eastern Bay Link, Cardiff, UK Roadway Project
The NEC-procured Eastern Bay Link provides a vital new 1.2km
dual carriageway through the Cardiff Docks area. It extends the
Welsh capital’s A4232
Answers
The A4232 Eastern Bay Link is a project that has been procured through NEC (New Engineering Contract) in the Cardiff Docks area. It comprises of a 1.2km dual carriageway, extending the Welsh capital's A4232.
The A4232 Eastern Bay Link, Cardiff, UK Roadway Project is a new 1.2km dual carriageway that runs through the Cardiff Docks area. This project was procured through the NEC contract. The A4232 Eastern Bay Link extends the Welsh capital’s A4232. This roadway has been constructed with an aim of providing a much needed new vital connection. It is designed to help reduce the congestion and traffic levels in the region, by providing a new and alternative access route.
The A4232 Eastern Bay Link is a significant roadway project in the UK that has been designed to reduce traffic congestion levels in the region. It is a vital new connection in the Cardiff Docks area, extending the Welsh capital’s A4232. The project comprises a 1.2km dual carriageway and was procured through the NEC contract. It is a much-needed addition that provides an alternative access route for motorists, thereby making their travel smoother and hassle-free. The A4232 Eastern Bay Link project is an excellent example of how infrastructure projects can make a significant impact on the region's growth and development. The project has been successfully completed and is now open for use.
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. if the entire family moves to the lowlands of east africa, four of the five males in the pedigree will have two genetic advantages over the other individuals in the family. explain the two advantages.
Answers
If the entire family moves to the lowlands of east Africa, four of the five males in the pedigree will have two genetic advantages over the other individuals in the family.
The two genetic advantages are related to the production of hemoglobin, the protein that carries oxygen in the blood.
The lowlands of East Africa are known for having a high prevalence of malaria, which is caused by a parasite that infects red blood cells.
Individuals who carry two copies of the sickle cell allele, a genetic mutation that affects the shape of red blood cells, are less likely to develop severe forms of malaria.
Hence, four of the five males in the pedigree will have two genetic advantages related to the production of hemoglobin if the entire family moves to the lowlands of East Africa. These advantages are related to the presence of the sickle cell allele, which provides protection against severe forms of malaria.
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A lack of objectivity and impartiality is called
A. pseudoscience
B. reliability
C. bias
D. plagiarism
Answers
Answer:
A. pseudoscience
Explanation:
Answer:
Bias
Explanation:
Water flow improves in the aftermath of a forest fire because
rain always puts out fires.
no living organisms survive fires, decreasing demand.
they clear the land, allowing more water to flow over it.
much of the water in a local watershed will be used to fight the fire.
Answers
Answer:
cccccccdcccdcdcxd zdx dcccccc
which statement describes the role of specialized cells in an organism?
A. Specialized cells are short lived and used for initial growth
B. Specialized cells perform specific functions in tissues
C. Specialized cells active during periods of extreme stress
D. Specialized cells divide to form unspecialized cells
Answers
How does temprature affect the rate at which water is transported in a celery stalk. Which variable will u change. How will we change it
Answers
Temperature can have a significant effect on the rate at which water is transported in a celery stalk. Higher temperatures can increase the rate of water transport, while lower temperatures can decrease it.
To investigate the effect of temperature on water transport in celery stalks, the variable that can be changed is the temperature of the water in which the celery stalk is placed. This can be done by changing the temperature of the water bath that the celery stalk is placed in.
To change the temperature, a water bath can be set up with a temperature control device such as a hot plate, a Bunsen burner, or a thermostatic water bath. The temperature can be measured using a thermometer and adjusted as necessary to achieve the desired temperature.
The celery stalk can be cut and placed in the water bath for a set period of time, such as an hour. The rate of water transport can be measured by weighing the celery stalk before and after the experiment. The difference in weight will indicate the amount of water that was transported during the experiment, and the rate of water transport can be calculated by dividing the amount of water transported by the time the celery stalk was in the water bath.
By changing the temperature of the water bath and measuring the rate of water transport, we can determine how temperature affects the rate at which water is transported in a celery stalk.
Which of the following terms is used to describe a balance of all body systems?
-Hypothermia
-Diffusion
-Perfusion
-Homeostasis
Answers
The following terms is used to describe a balance of all body systems is D. Homeostasis.
It is a biological process that helps to maintain the stability of the internal environment within the narrow limits that are required for the survival of an organism. Homeostasis ensures that the internal environment of the organism is stable, and that its body systems function efficiently in response to external changes. This process involves various mechanisms such as feedback loops that detect and correct any deviation from the normal state of the body.
Homeostasis plays an important role in maintaining the optimal conditions for the cells and organs to function effectively. In summary, Homeostasis is a self-regulating process that allows an organism to maintain a state of balance or equilibrium despite changes in the external environment. So therefore the term used to describe a balance of all body systems is D. Homeostasis.
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Female sheep have egg cells with 26 chromosomes. How many chromosomes are in each cell of an adult sheep?
A. 13
B. 46
C.52
D.26
Answers
is the shaded a dominant or recessive trait?
Answers
Answer:
Recessive
Explanation:
dominant traits don't skip generations
Summarize this paragraph
Environmental measurements
Monthly averaged measurements of environmental factors and nutrients are shown in Table 2. The recorded seawater tempera tures in the two sampling sites ranged between 18 and 36 °C. The lowest temperature (18 °C) was measured in both sites during the early January. The highest temperatures (34 and 36 °C in the mari culture centre and the marina, respectively) were recorded during the end of August. There were minor variations in temperature between the two sampling sites, which might be due to sampling timing during the day (ie, early morning or midday).Seawater salinity is generally high in restricted areas such as coastal lagoons and semi-enclosed marinas. Salinity levels ranged between 43 and 46 psu in the two sampling sites reflecting typical high seawater salinity in the Arabian Gulf. Despite receiving an input of low-salinity water from the mariculture facilities, the lagoon showed slightly higher levels of salinity than the marina. Levels of pH ranged between 7.3 and 7.9, with averages of 7.6 and 7.5 in the marina and the mariculture centre, respectively. Mariculture activities are typically associated with an increased load of dissolved nutrients in the effluent discharges, Levels of am monia and phosphate were higher in the mariculture centre than the marina. The mean concentrations of ammonia and phosphate) were 0.55 and 0.18 in the mariculture centre compared to 0.17 and 0.07 mg in the marina, respectively. The mean concentrations of nitrate and nitrite were 0.37 and 0.02 in the mariculture centre compared to 0.33 and 0.07 mg I in the marina, respectively. PCA analysis revealed that nutrients (ammonia, nitrate, nitrite and phosphate) and salinity are strongly correlated with mariculture centre (Fig. 3).
Answers
The paragraph describes monthly measurements of environmental factors and nutrients in two sampling sites, including seawater temperatures, salinity levels, pH, and nutrient concentrations.
The paragraph provides a summary of the monthly measurements of various environmental factors and nutrients in two sampling sites. The seawater temperatures ranged between 18 and 36 °C, with the lowest temperature observed in early January and the highest temperatures recorded at the end of August. Minor variations in temperature between the two sites were likely due to the timing of sampling.
Seawater salinity levels ranged between 43 and 46 psu, reflecting the high salinity typically found in the Arabian Gulf. The lagoon showed slightly higher salinity levels than the marina, despite receiving low-salinity water from mariculture facilities.
pH levels ranged from 7.3 to 7.9, with slightly higher averages in the marina compared to the mariculture centre.
The mariculture centre had higher levels of dissolved nutrients, including ammonia and phosphate, compared to the marina. Concentrations of ammonia, phosphate, nitrate, and nitrite were all higher in the mariculture centre.
Principal Component Analysis (PCA) revealed a strong correlation between nutrients (ammonia, nitrate, nitrite, and phosphate) and salinity with the mariculture centre.
Overall, the paragraph presents an overview of the monthly environmental measurements, highlighting variations in seawater temperature, salinity, pH, and nutrient concentrations between the two sampling sites.
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If a man has type B blood and his sister has type A blood, which combination listed below is most likely the genotypes of their parents?
Answers
Answer:
type AB father and type O mother
hope this helps! :D
The genotypes of the parents are type AB father and type O mother.
How is the blood type of a child determined?Each parent contributes to one of the two alleles to their child. A mother with blood type O can only pass allele O to her child. A father with type AB can pass either the A or B allele to the child. So the child can either have a genotype as AO or BO giving the child either A blood group or B blood group.
There are mainly eight blood genotypes. The blood types are determined by the location of A and B antigens and the presence of a protein called Rh factor.
Individuals with type O blood have no antigens attached to the cell surface of RBCs. It contains A and B antigens in the plasma portion of the blood. O blood type is needed the most for blood transfusion and blood donations.
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If an essential amino acid were not present in the person's diet, could all proteins be made?
Answers
Please help me i am stuggaling so badly acellus what is the energy of an orange lamp with a frequency of 5.10 x 10^14 hz ? x 10^? <----- answer like than please
Answers
5.88235.10-7 is the energy of an orange lamp with a frequency of 5.10 x 10^14 hz.
What is frequency ?The number of times a repeated event occurs in a given amount of time is known as its frequency. It is also sometimes called "temporal frequency" to stress the contrast to "spatial frequency" and "ordinary frequency" to underline the contrast to "angular frequency." Hertz (Hz), which is equal to one (event) per second, are the units used to express frequency.
The reciprocal of frequency, the period is the length of time occupied by one cycle in a repeating event. The period, T—the space between beats—of a heart beating at a frequency of 120 beats per minute (2 hertz), for instance, is half a second (60 seconds divided by 120 beats). Science and engineering employ frequency as a key characteristic to define the temporal scale.
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Question 14 (2 points) The process of evolution that involves a change in the DNA sequence that leads to evolutionary change is called natural selection. O mutation. genetic drift. migration.
Answers
The process of evolution that involves a change in the DNA sequence that leads to evolutionary change is called a mutation.
A mutation is a sudden and lasting alteration in the DNA sequence that can influence genetic variation. Changes in the DNA sequence can influence phenotype, which may or may not have an effect on an organism's fitness. Mutations occur spontaneously, either from errors in DNA replication or from exposure to mutagenic agents. Mutations may happen in either coding or non-coding regions of the DNA, and they can be either silent or expressed.
Evolution is a natural process that results in the gradual change of inherited characteristics in populations over generations. It is the process of alteration in the inherited characteristics of species over successive generations. In other words, it is the process of gradual changes that happen to species over time as they adapt to their environments. It can be defined as a change in the gene frequency in a population over time.
Types of Evolution 1. Natural Selection 2. Genetic Drift 3. Gene Flow 4. Mutation 5. Non-Random Mating 6. Admixture 7. Mutation Pressure 8. Genetic Draft 9. Bottleneck and Founder Effect 10. Sexual Selection the process of evolution that involves a change in the DNA sequence that leads to evolutionary change is called a mutation.
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Why are senses necessary for behavior?
Answers
Answer: Senses are necessary for behavior because behavior is a response to an organism's environment. Without senses, the organism would be unable to sense anything in the environment to react to. Senses tell an organism what to avoid and what to interact with; they guide the organism's decisions. Even organisms with very simple senses have some way to detect changes in the environment that need to be reacted to.
Aaron, Blaine, and Cruz are solving the equation
4
7
(7 − n) = −1.
Aaron started his solution by multiplying both sides
of the equation by
7
4
.
Blaine started by using the distributive property to
multiply
4
7
by both 7 and −n.
Cruz started by dividing both sides of the equation
by
4
7
.
Which of the following is true?
Blaine and Cruz made an error in picking their first steps.
Cruz made an error in picking his first step.
All three made an error because the right side equals -1.
All three chose a valid first step toward solving the equation.
Answers
Cruz made an error in picking his first step. Therefore, option B is correct.
Aaron's step: Multiplying both sides by 7/4. This step is valid because multiplying both sides of an equation by the same non-zero value does not change equality.
Blaine's step: Using the distributive property to multiply 4/7 by both 7 and -n. This step is also valid because it correctly applies the distributive property to the expression.
Cruz's step: Dividing both sides by 4/7. This step is incorrect because dividing both sides of an equation by a non-zero value does not preserve equality. To solve for 'n', Cruz should have multiplied both sides by 7 - n instead.
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Answer:
yo
Explanation:
its D
or
All three chose a valid first step toward solving the equation.
5. What enzyme makes it less likely that DNA will be lost from telomeres during replication?
Answers
Answer:
Telomearse
Explanation:
Which of the following statements describe evolution?
A) Natural selection chooses the most popular trait
B) Quick changes occur in an individual's phenotype
D) The match between organism and their environment decreases
Answers
The correct answer is D) "The match between organisms and their environment decreases" describes evolution.
Evolution refers to the process of change in living organisms over successive generations, leading to the development of new species. It is driven by various mechanisms, including natural selection. In the context of evolution, the match between organisms and their environment is a crucial aspect.
As environments change over time, organisms that possess traits advantageous for their survival and reproduction are more likely to pass on those traits to future generations. This is known as natural selection. Over time, the population of organisms becomes better adapted to their environment, increasing the match between their traits and the conditions they face. This process results in the evolution of species as they become better suited to their environment.
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Which of the following statements is NOT true about science a. Science is a method rather than an accumulation of facts. b. Science challenges previous assumptions. c. Science involves testing possible solutions to certain types of problems. d. Science is highly predictable, but not provable. e. Science is a process by which knowledge is accumulated.
Answers
Unlike in the activation of the sympathetic nervous system, the activation of the hpa axis _____.
Answers
Unlike in the activation of the sympathetic nervous system, the activation of the hpa axis HELPS COPE WITH Prolonged period of stress (slowed response)
Your sympathetic nervous system is a nerve network that assists your body in activating its "fight-or-flight" response. This system's activity increases when you're stressed, in danger or physically activeThe sympathetic nervous system (SNS) is one of three autonomic nervous system divisions, the others being the parasympathetic nervous system and the enteric nervous system.The enteric nervous system is sometimes considered a component of the autonomic nervous system and other times as a separate system.To know more about Nervous systems here
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What personal protective items should be worn for a lab activity that involves water?
O A. none, because water is safe
O B. gloves and closed toed shoes
O C. gloves, closed-toed shoes, and goggles
D. goggles and closed-toed shoes
Answers
C
Explanation:
gloves, closed-toed shoes, and goggles
If the anterior root of a spinal nerve were destroyed, a person would lose: a. sensory perception related to that pathway.
b. motor output related to that pathway.
c. reflex activity only, related to that pathway.
d. both reflex activity and sensation related to that pathway
Answers
If the anterior root of a spinal nerve were destroyed, a person would lose motor output related to that pathway.
The anterior root of a spinal nerve carries motor neurons that send signals from the spinal cord to the muscles, allowing for movement. Destruction of the anterior root would result in paralysis of the muscles innervated by that nerve pathway, leading to loss of motor function.
Sensory perception, on the other hand, is carried by the posterior root of the spinal nerve, so it would not be affected. Reflex activity may also be affected if the reflex arc involved the damaged nerve pathway, but this would not be the only type of reflex activity lost.
Therefore, option b is the correct answer.
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Porphyria is an autosomal dominant disease that disrupts how oxygen-binding molecules in red blood cells are produced.
a. True
b. False
Answers
Porphyria is an autosomal dominant disease that disrupts how oxygen-binding molecules in red blood cells are produced. This statement is true.
Porphyria refers to a group of diseases caused by an abnormality in the production of heme. Heme is a component of hemoglobin, a protein that carries oxygen in the blood. Heme is produced in the liver, and porphyria is a result of abnormalities in the enzymes involved in the production of heme. This disease can affect the skin, nervous system, gastrointestinal tract, and other organs. Porphyria can be inherited as an autosomal dominant or recessive trait, depending on the type of disease. Porphyria causes red blood cells to break down, leading to symptoms such as abdominal pain, skin sensitivity to light, and neurological issues. The disease can be triggered by various factors such as alcohol, drugs, infections, and certain medications. The treatment for porphyria is focused on relieving symptoms and preventing complications. Treatment options may include medications, lifestyle changes, and avoiding triggers that can cause attacks. In severe cases, a bone marrow transplant may be necessary. Hence, the statement is true.
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Explain why plants reproduce sexually as well as asexually in nature?
Answers
Answer:
Many plants are able to propagate themselves using asexual reproduction. ... Traditionally, these plants survive well under stable environmental conditions when compared with plants produced from sexual reproduction because they carry genes identical to those of their parents.
Question
Based on the biologist’s observations, how many chromosomes are present in a nondividing spider mite cell?
Answers
33 species altogether have a 2n=22 chromosomal numbering system that includes the X1X20 x chromosomes system. mite spider (Tetranychidae) 4–14 The crocotopus sylvestri Oikopleura dioica (4) Six yellow fever insect (Aedes aegypti) 6.
What are spider mites known to science as?The Tetranychidae group, which contains roughly 1,200 species, includes spider mites. Spider mites typically reside on the undercarriage of plant leaves, where they may weave protective silk webs. They can harm a plant by feeding by puncturing its cells.
Why do they go by the name spider mites?The silk webbing that the majority of species make on infected leaves is where the names "spider mite" and "webspinning mite" originate (Figure 3). They may easily be distinguished from all other kinds of mites and other insects, such as aphid and thrips, that additionally infest leaf undersides, by the presence of webbing.
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