Answer:
The Big Bang theory is the prevailing cosmological model explaining the existence of the observable universe from the earliest known periods through its subsequent large-scale evolution. The model describes how the universe expanded from an initial state of high density and temperature,and offers a comprehensive explanation for a broad range of observed phenomena, including the abundance of light elements, the cosmic microwave background (CMB) radiation, and large-scale structure.
Crucially, the theory is compatible with Hubble–Lemaître law—the observation that the farther away a galaxy is, the faster it is moving away from Earth. Extrapolating this cosmic expansion backwards in time using the known laws of physics, the theory describes an increasingly concentrated cosmos preceded by a singularity in which space and time lose meaning (typically named "the Big Bang singularity"). Detailed measurements of the expansion rate of the universe place the Big Bang singularity at around 13.8 billion years ago, which is thus considered the age of the universe.
After its initial expansion, an event that is by itself often called "the Big Bang", the universe cooled sufficiently to allow the formation of subatomic particles, and later atoms. Giant clouds of these primordial elements—mostly hydrogen, with some helium and lithium—later coalesced through gravity, forming early stars and galaxies, the descendants of which are visible today. Besides these primordial building materials, astronomers observe the gravitational effects of an unknown dark matter surrounding galaxies. Most of the gravitational potential in the universe seems to be in this form, and the Big Bang theory and various observations indicate that this excess gravitational potential is not created by baryonic matter, such as normal atoms. Measurements of the redshifts of supernovae indicate that the expansion of the universe is accelerating, an observation attributed to dark energy's existence.
Georges Lemaître first noted in 1927 that an expanding universe could be traced back in time to an originating single point, which he called the "primeval atom". Edwin Hubble confirmed through analysis of galactic redshifts in 1929 that galaxies are indeed drifting apart; this is important observational evidence for an expanding universe. For several decades, the scientific community was divided between supporters of the Big Bang and the rival steady-state model which both offered explanations for the observed expansion, but the steady-state model stipulated an eternal universe in contrast to the Big Bang's finite age. In 1964, the CMB was discovered, which convinced many cosmologists that the steady-state theory was falsified, since, unlike the steady-state theory, the hot Big Bang predicted a uniform background radiation throughout the universe caused by the high temperatures and densities in the distant past. A wide range of empirical evidence strongly favors the Big Bang, which is now essentially universally accepted.
Explanation:
Answer:
Explanation:
its a theory
2. The process of obtaining and using energy is called
metabolism
O photosynthesis
reproduction
homeostasis
Answer:
metaboliam is the ans of this question
The continuity of life is based on heritable information in the form of DNA. Complete the explanation how mutations in protein-coding genes and regulatory DNA contribute to evolution. Match the terms in the left column to the appropriate blanks in the sentences on the right.
a. gene
b. silenced
c. reproduce
d. protein production
e. inherited
f. grows
g. body form
h. function
i. regulatory sequence
1. Mutations in protein-coding genes and regulatory DNA contribute to evolution if the organism carying them Survives and_____. Mutations in a____.
2. Mutations within a____may lead to major changes in______for example, ita Hox gene is attected. Moreover, if a transposable element inserts here, it may lead to a decreased or increased_____. This may impact the organism and if passed on to the offspring, become____. The result of these events may eventually lead to increased fitness and formation of new species.
Answer:
1. Mutations in protein-coding genes and regulatory DNA contribute to evolution if the organism carrying them survives and_c. reproduce. Mutations in a_a. gene lead to different effects. For example, a mutation may change the _h. function of the protein or the protein will no longer be produced.
2. Mutations within a_i. regulatory sequence may lead to major changes in_g. body form, for example, if a Hox gene is affected. Moreover, if a transposable element inserts here, it may lead to a decreased or increased_d. protein production. This may impact the organism and if passed on to the offspring, become_e. inherited. The result of these events may eventually lead to increased fitness and the formation of new species.
Explanation:
Mutations can be defined as genetic changes (nucleotide changes) in the genome sequence of an organism. Mutations can be beneficial, neutral or deleterious (depending on their effects on the adaptive fitness of the individual). Mutations that occur in the somatic (body cells) will not be inherited, whereas mutations in the germinal (gamete) cells can be passed on to the next generations. Moreover, Hox genes are major developmental regulators involved in a wide variety of aspects of animal development. In consequence, changes in the expression level of Hox genes caused, for example, through 1-mutations of their regulatory sequences, such as promoter sequences, or 2-the insertion of transposable elements, may lead to conspicuous phenotypic changes by affecting protein production. Eventually, these mutations may confer an adaptive advantage.
5. The major functions of carbohydrates irſclude
A. Structure framework. B. Storage C. Both Aan B
D . None of these
Answer:
D
Explanation:
used to provide energy to the body
explain the importance of taking named precautions before blood transfussion can be done?
Answer:
To minimize the chance of an adverse reaction during a transfusion, health care practitioners take several precautions. Before starting the transfusion, usually a few hours or even a few days beforehand, the person is cross-matched with the donor blood (not done for transfusions of plasma or platelets).
A solid reactant is placed into a beaker of a warm water. The liquid vigorously bubbles as the solid dissolves into the solution. What will most likely happen if the temperature of the liquid is slightly reduced?
More bubbles will be produced because the solution is becoming more concentrated.
Fewer bubbles will be produced because of fewer collisions of reactant molecules.
The solid will get smaller at a faster rate because of more collisions of reactant molecules.
The solid will get larger at a slower rate because precipitate is coming out of the solution.
Answer: Fewer bubbles will be produced because of fewer collisions of reactant molecules.
Answer:
B: Fewer bubbles will be produced because of fewer collisions of reactant molecules.
Short-term mechanisms for regulating blood pressure include regulating peripheral vascular resistance and cardiac output through:________-
Answer:
Dilation or constriction
Explanation:
Short-Term mechanism for regulating blood pressure include regulating peripheral vascular resistance and cardiac output through dilation or constriction of the blood vessels while on the other hand, long-term mechanism for controlling of blood pressure done by the renin-angiotensin system. Brains stem is the part of the brain that is responsible for the controlling of blood pressure in the body.
why are electrons in an atom involved in bonding
Answer:
The valence electrons have a role in the bonding of two atoms. The nuclei of each atom are drawn together by their attraction to the valence electrons of the other atom. As the atoms are drawn together by their attractions, electrons from each atom are drawn to the nuclei of both atoms, where they are "shared."
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how does hair appear on the head
Explanation:
Blood from the blood vessels in your scalp feeds the root, which creates more cells and makes the hair grow. The hair gets pushed up through the skin as it grows, passing an oil gland along the way.
Answer:
Hair grows by forming new cells at the base of the root. These cells multiply to form a rod of tissue in the skin. The rods of cells move upward through the skin as new cells form beneath them. As they move up, they're cut off from their supply of nourishment and start to form a hard protein called keratin.
elaborate the value of wildlife
Answer:
1.Comm ercial Value- money made from wildlife and fish.
2.G ame Value- Value of wildlife as g ame.
3.Aesthetic Value- Value of wildlife for it's b b eauty and ple asure.
4.Scientific Value- Value placed on the study and res earch of wildlife.
5.they provides us food , clothing and source of income
hope this will help you more..
Vasopressin works on
Answer:
To treat diabetes insipidus, which is caused by a lack of this naturally occurring pituitary hormone in the body. And used to treat or prevent certain conditions of the stomach after surgery or during abdominal x-rays.
In pea plants, flowers are either white or purple: the purple color is produced by pigments called anthocyanins. The production of anthocyanins is a two-step process: the first step is controlled by the C gene and the second by the P gene. Both genes must produce functional proteins for anthocyanin to be produced. This is an example of:
Answer:
This is an example of gene translation.
Explanation:
Gene translation refers to the genetic process where a set of genes is used to create amino acids that will be responsible for creating a protein needed to perform some function or characteristic of the organism. In the question above, we can see that anthocyanin, responsible for the pigment of flowers, is created through the work of proteins that are created from gebes C and P. This is an example of gene translation, as it presents the formation of proteins regulated by genes.
Question 2 of 26
What happens at a subduction zone between an oceanic plate and a
continental plate?
O A. The continental plate slides under the oceanic plate, and
part of it melts to form magma that sinks into the mantle.
O B. The oceanic plate and continental plate pull away from
each other, allowing magma to rise and form an ocean
ridge.
O c. The oceanic plate and continental plate slide past each
other, creating a series of faults that allow magma to rise
and form a chain of volcanoes.
O D. The oceanic plate slides under the continental plate, and
part of it melts to form magma that rises up through the
continental plate.
SUBMIT
What are the products of photosynthesis?
Answer:
option C
Explanation:
Glucose and oxygen
The skin is protected by the action of cells that arise from bone marrow and migrate to the epidermis. Which cells serve this function?
Answer:
Langerhan's cells
Explanation:
The Langerhan's cells arise from the bone marrow and migrate to the epidermis. The Langerhan's cells are the body's first line of defense and play a significant role in antigen presentation. They need special stains to be visualized and are primarily found in the stratum spinosum. These are the mesenchymal origin obtained from CD34 positive stem cells of bone marrow and are part of the mononuclear phagocytic system.
Would an observational study or an experiment be more appropriate to investigate the effects on fertilizer on plant growth? Explain.
Answer:
Experiment
Explanation:
For such an investigation an Experiment would be the better option. This is because in an experiment you would have both an experimental group and a control group. This would allow you to use fertilizer on one but not the other, therefore, providing seperate results that you can use to compare with one another. This ultimately helps you determine the actual effects that fertilizer has on the growth of plants, since the fertilizer would be the only variable in the experiment. An observational study would only allow you to observe the plants in a natural scenario, without interfering and seperating the plants into different groups with different environments.
1. What features are located medial to the cranium and the mandible. Identify the category here.
2. How many individual items are included in this category?
2. There is a total of six individual items in this category.
The human skull is made up of two parts, the cranium, which contains the face and the brain and the only movable bone called the mandible or lower jaw.
The features that are medial to the cranium and the mandible are those structures that are nearer to the mid-line.
The above mentioned features works together to provide the following functions of the cranium:
protection of the delicate structures including the brain, eye and the inner ear.maintaining patency of the nasal passage enabling breathing.the movement of the mandible allows chewing.Learn more here:
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.
What trait are narcissists likely to have that is associated with leader emergence but not effectiveness
Answer:
Agreeableness.
Explanation:
Agreeableness is the trait that narcissists likely to have which is negatively corelated and is associated with leader emergence but not effectiveness. The tendency toward self-interest would attract the person into follow his or her own goals rather than the interests of their group or company. The term Narcissism originated from Greek mythology, where a young man whose name is Narcissus fell in love with his own image reflected in a pool of water so that's why selfness and self interests refers to Narcissism.
are oxygen and glucose products in cellular respiration?
Answer:
no the oxygen and glucose are used to produce ATP in cellular respiration
Predict what will happen to the concentration of pyruvate, NADH and H+ when the Krebs cycle is stopped by arsenic
Answer: Pyruvate would increase, NADH would decrease, and intermembrane H+ would decrease as well.
Explanation:
Glycolysis would raise pyruvate, but the Krebs Cycle would not produce NADH, decreasing it. No protons (H+) will be pushed into the intermembrane gap, lowering its H+ content and raising its pH.
What is Kreb's cycle?The tricarboxylic acid (TCA) cycle, commonly referred to as the Krebs cycle or the citric acid cycle, is the primary route that cells use in order to acquire energy and is an essential component of aerobic respiration. The cycle transforms the oxidative potential of acetyl coenzyme A (acetyl CoA) into the reductive potential of nicotinamide adenine dinucleotide (NADH).
The synthesis of ATP via the Krebs cycle is disrupted when arsenic is present because it prevents pyruvate from being converted into acetyl coenzyme A (acetyl-CoA). In addition to the effects described above, arsenic also prevents glucose uptake at the cellular level, as well as gluconeogenesis, the oxidation of fatty acids, and additional acetyl-CoA formation.
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Question 8 of 30
Which of these fields of study would be the most useful for someone
interested in preserving native plants in grasslands?
A. Meteorology
B. Botany
C. Chemistry
D. Anthropology
SUBMIT
Answer:
botany
Explanation:
since it deals with the study of plants
Whic type of graph would you use if you wanted to see if one variable had an affect on another variable?
A scatter plot or scattergram chart will show the relationship between two different variables or it can reveal the distribution trends. It should be used when there are many different data points, and you want to highlight similarities in the data set.
Answer:
line
Explanation:
A line graph is used to see if there is a relationship between variables.
Reviewing video surveillance is part of which alert food defense
Answer:
The correct answer is - look.
Explanation:
Alert is an acronym that is used in food defense that stands for Assure, Look, Employees, Reports, and Threat. It helps in increasing the awareness of food safety in food industries.
The Look is the type of alert that includes video surveillance in the food industry or store to check and maintain food safety and security. It helps in looking during and after the food defense.
The accurate solution is =look for is part of which alert food defense.
Alert is an acronym this is utilized in meals protection that stands for Assure, Look, Employees, Reports, and Threat. It facilitates in growing the attention of meals protection in meals industries.
The Look is the sort of alert that consists of video surveillance withinside the meals enterprise or shop to test and keep meals protection and security. It facilitates in searching in the course of and after the meals protection.
What is food defense?Food protection is the safety of meals merchandise from infection or adulteration supposed to reason public fitness damage or financial disruption.
Thus it is well expailned.
To learn more about the food defense refer to link :
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How are meiosis and mitosis similar?
A.They both produce diploids.
B.They happen at the same time.
C.They both produce sex cells.
D.They both produce new cells.
Answer:
D.They both produce new cells.
Explanation:
Meiosis and mitosis are both processes of cell division; however, they have many differences. Meiosis occurs in sex cells and produces haploids that can be fertilized. Mitosis occurs in body cells and produces diploids that replace old or damaged cells. Still, both processes result in the creation of new cells.
Answer:
D) They both produce new cells!
Explanation:
Dont forget to give a thank you, and to rate my answer!
What transmission pattern would indicate that a trait may be transmitted through X-linked inheritance
Answer:
The transfer pattern of an X-linked inheritance can be either X-linked dominant or X-linked recessive.
Explanation:
X-linked inheritance is the term that refers to a gene capable of causing a specific characteristic or disorder and is located on the X chromosome. During the transmission of genetic material for the formation of another living being, this gene can be transmitted through the transmission standards known as X-linked dominant or X-linked recessive.
X-linked dominance inheritance occurs when the dominant gene is transmitted on the X chromosome, while X-linked recessive inheritance occurs when the recessive gene is carried on the X chromosome.
Which of the following is a benefit of dams?
A. They impede fish migration and spawning
B. They provide a source of energy
C. They increase the sediment load of waterways
D. They divert water from ecosystems
How will you isolate DNA from a pure fungal culture
Answer:
Explanation:
There are several ways of isolating DNA from a pure fungal culture but you can use the CTAB method.
In this method, genomic DNA can be extracted.
First of all, the cell walls of fungal mycelia can first be broken down by grinding it using glass rods or you can use or liquid nitrogen. Place it in a plate. You can now CTAB extraction buffer , then incubate at 65°C, then let it undergo purification with phenol:chloroform:isoamyl alcohol 25: 24: 1 and carry out precipitation with isopropanol . Then the DNA can be extracted and then dissolved in 50 μl of pure water.
Provide details about Meiosis.
Explanation:
a type of cell division that results in four daughters cells each with half the numbers of chromosomes of the parent cell , as in the production of gametes and plant spores
What is added to tacos, burritos, and soups that is
high in fiber?
Answer: flax seed whole wheat tortillas.
1⁄2 cup low-fat refried beans.
1⁄4 cup low-fat cheddar cheese.
leaves lettuce.
1⁄ cup salsa.
1⁄4 cup fat free sour cream.
Pinto beans are added to tacos, burritos, and soups that are high in fiber.
What are fibers and their types?The body is unable to digest fiber, which is a form of carbohydrate. While fiber cannot be converted into glucose, the sugar that results from the breakdown of most carbs, fiber travels through the body undigested.
The solubility, viscosity, and fermentability of dietary fibers, which have an impact on how they are metabolized by the body, can be used to classify them in general. Dietary fibers have a wide range of chemical compositions.
Fibre comes in two varieties: soluble and insoluble. Both are crucial for good health, digestion, and illness prevention. Thus, Pinto beans are added to tacos, burritos, and soups that are high in fiber.
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In which process do producers use chemi-
cal energy and make food?
A chemosynthesis
B fermentation
C glycolysis
D photosynthesis
Answer: D, Photosynthesis
Explanation:
photosynthesis is the process plants use to make food :)
my voice for safety advocacy in text ride or driver
Answer:
I cannot help you with that because there is no question
