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Related Questions
How can each copy of DNA at the end of replication be compared?
A. Each copy is identical to each other
B. Each copy is different from each other
C. They are 90% similar
D. They are 50% similar
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Answer:
At the end of DNA replication, each copy is identical to each other (option A).
Explanation:
The concept of DNA replication implies that, from an original molecule, two identical molecules are obtained.
DNA replication is based on a semi-conservative model, since the double strand is separated, and each strand serves as a mold for the synthesis of a new strand. At the end of the replication, two identical DNA molecules will be obtained, each consisting of an original strand and a new one.
The best evidence that the replication process results in two identical molecules is that, otherwise, an individual's genetic information could vary, which does not happen.
The other options are not correct because:
B. The copies cannot be different.
C and D. They are 100% identical, not partially (50 or 90%) similar.
If you construct a model that places a cell with an internal salt concentration of 0.02 M in an aqueous solution that has a salt concentration of 0.015 M, what would cause the cell to lose internal pressure?
a. Active transport of water against the gradient
b. Diffusion of water with the pressure gradient
c. Osmosis of water flowing from where the solute is least concentrated
d. Passive transport of water with the gradient
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A model that places a cell with an internal salt concentration of 0.02 M in an aqueous solution that has a salt concentration of 0.015 M would be because of the Active transport of water against the gradient. It is transported from the condition of high osmolarity to a solution of lower osmolarity.
What is active transport ?Active transport is the process which is helped up by the active ions and active channels that help to maintain the balance and transportation of molecules in the membrane.
The concentration mentioned in the equation is the concentration that is like the concentration of higher osmolarity and the flow will continue to the concentration of lower osmolarity across the semi permeable membrane. Water is transported against its concentration gradient.
Diffusion is the movement of higher concentration to the lower concentration through a semi permeable membrane. Osmosis is opposite to it.
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Briefly (3-5 sentences) summarize cell division in prokaryotic cells.
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Answer:
Prokaryotic cells have a ring-shaped nucleus, however it is not fully defined, and thanks to this, their DNA is found unlike eukaryotic cells, scattered in the cytoplasm, an example of a prokaryotic cell is a bacterium, which has Oval shaped
uwu
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The space outside the nucleus of an atom contains?
A) protons
B) electrons
C) neutrons
D) protons & neutrons
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Answer:
Electrons
Explanation:
Electrons are always outside the neucleus of an atom. The rest are stored inside.
Explain how Carbon is passed from photosynthesis to cellular respiration then back.
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The main purpose of photosynthesis is to convert radiant energy from the sun into chemical energy that can be used for food. Cellular respiration is the process that occurs in the mitochondria of organisms (animals and plants) to break down sugar in the presence of oxygen to release energy in the form of ATP.
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Write a brief report on the common turtles found along the United States coastline nearest to you. Also write about the measures taken to protect them
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Explanation:
Scientists recognize seven living species of sea turtles, which are grouped into six genera. Each sea turtle has both a scientific name and a common name. The scientific name identifies the genus and species, and the common name typically describes some characteristic of the turtle’s body.
Different species of sea turtles like to eat different kinds of food. Sea turtles have mouths and jaws that are specially formed to help them eat the foods they like. And each species of sea turtle eats, sleeps, mates and swims in distinctly different areas. Sometimes their habitats overlap, but for the most part they each have different preferences.
Which one of the following is a density-dependent limiting factor for a group of rattlesnakes?
A) Amount of prey
B) Surrounding temperatures
C) Amount of precipitation
D) Soil quality
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Answer:
... A disease resulting in the deaths of one third of a dense population of bats in a cave would be a
Complete the passage to describe independent assortment. (Fill in blanks)
During metaphase 1, the chromosomes line up in the middle of the cell. The way the chromosomes line up is ________ , or independent. This independent alignment results in different possible arrangements or assortments of chromosomes during metaphase. This in turn results in different __________ of chromosomes in _____
cells. During sexual reproduction, the traits that are determined by the genes on these chromosomes are passed on from parents to offspring.
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Answer:
During metaphase 1, the chromosomes line up in the middle of the cell. The way the chromosomes line up is random, or independent. This independent alignment results in different possible arrangements or assortments of chromosomes during metaphase. This in turn results in different sets of chromosomes in daughter cells. During sexual reproduction, the traits that are determined by the genes on these chromosomes are passed on from parents to offspring.
Explanation:
In metaphase, the typical chromosome is formed by two chromatids joined by a centromere. Each chromatid is composed of a sequence of chromatin ringlets domains. During metaphase I, fibers of the spindle apparatus capture chromosomes and take them toward the center of the cell, to the metaphase plate. Each chromosome of the pair joins with a microtubule of only one of the spindle poles, so the two equivalent chromosomes join the fibers of opposites poles.
The homologous pairs of chromosomes get aligned in the metaphase plate for their posterior separation in anaphase I. When they align in the center of the cell, their orientation is random.
Answer:
1st blank: Random
2nd blank: Combinations
3rd Blank: Sex
Explanation: I got 100 on it.
What is the relationship between cells tissues?
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Question:
What is the relationship between cells tissues?
Explanation/Answer:
A group of cells working together is defined as a tissue and several tissues working together comprise an organ.
Answer:
Tissues are made up of cells
Explanation:
Cells are the most basic units of life; tissues are composed of cells.
Which of the following determines a cell's function?
A Its environment
B Its Location
C Its size
D Its structure
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Answer:
it's environment
Explanation:
its nature
Which of the following correctly explains the difference between mitosis and meiosis?
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Answer:
Below is a definition of the distinction between mitosis as well as meiosis.
Explanation:
Mitosis:
The genetic information (DNA) in something like a cell throughout mitosis has been duplicated as well as split evenly into two cells. An orderly sequence of circumstances known as the cell cycle moves through it's dividing cell.Meiosis:
Meiosis seems to be the mechanism whereby the gametes throughout sexually reproducing individuals are produced. Gametes have been formed in gender gonads and just like the new cells, constitute two complete sets of chromosomes.How do a liquid's properties differ from a Solid's properties?
asappp please
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In DNA replication ______.
A. The two strands of DNA come apart.
B. A copy is made.
C. Each copy has one strand of "old" DNA and one strand of "new" DNA.
D. all of the above
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Answer:
you answer to this question is: D all of the above
Which process works with erosion to break down rock?
deposition
settling
transportation
weathering
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Weathering is the process that works with erosion to break down rock. Thus, option D is correct.
What is weathering?The rock particles has that are to be broken down inside the weathering method are moved to some other place within the course of the erosion. For this particular reason, weathering as well as the erosion paintings collectively reshape Earth's panorama. The technique of the bodily breaking down the rock.
Weathering has the breaking down or dissolving of the rocks and minerals on this planet's ground. once the rock has been damaged down, the method known as the erosion transports the bits of rock and minerals away. Water, acids, salt, flora, animals, and adjustments in temperature are all sellers of weathering and erosion.
The rock particles that has been broken down into or inside the weathering method are moved to some other place within the course of erosion. Weathering and the erosion paintings collectively reshape Earth's panorama. The technique of bodily breaking down the rock.
Therefore, Weathering is the process that works with erosion to break down rock. Thus, option D is correct.
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Um dos princípios da Termodinâmica pode ser enunciado da seguinte forma: "É impossível construir uma máquina térmica operando em ciclos, cujo único efeito seja retirar calor de uma fonte e convertê-lo integralmente em trabalho." Por extensão, esse princípio nos leva a concluir que: *
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Answer:
A energia térmica não pode ser criada nem destruída, apenas convertida em outras formas de energia.
Explicação:
Os princípios da termodinâmica nos levam a concluir que a energia térmica não pode ser criada nem destruída apenas convertida em outras formas de energia. Essa energia térmica pode ser convertida em energia mecânica, elétrica e outras formas de energia. A energia térmica também é liberada quando o alimento ingerido pelos herbívoros, apenas 10% da energia é transferida de um nível trófico para outro, enquanto 90% da energia é liberada para a atmosfera.
why cellular respiration needed
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Answer:
Cellular respiration is used to create usable energy from the foods that living things eat. It's important to know that the reactions involved in cellular respiration are catabolic, meaning they break down molecules into smaller ones.
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Scientists have changed the model of the atom as they have gathered new evidence. One of the atomic models is shown below.
What experimental evidence led to the development of this atomic model from the one before it?
A few of the positive particles aimed at a gold foil seemed to bounce back off of the thin metallic foil.
Experiments with water vapor showed that elements combine in specific proportions.
Equations were used to identify regions around the nucleus where electrons would likely be.
Cathode rays were bent in the same way whenever a magnet was brought near them.
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Answer:
The answer is C
Explanation:
I was correct at first but then chanaged my answer when someone said it was a :(
A few of the positive particles aimed at a gold foil seemed to bounce back off of the thin metallic foil. Therefore, option (1) is correct.
The gold foil or Rutherford scattering experiment showed that the atom has a small, compact, positively charged nucleus. The gold foil deflected few alpha particles, indicating that the atom is primarily empty space. A small percentage of particles deflected or bounced back, revealing a concentrated positive charge in a limited region of the atom.
This led to Ernest Rutherford's atomic model, often known as the planetary model, where the atom has a tiny, positively charged nucleus at the centre and mostly empty space where electrons orbit it. Therefore, option (1) is correct.
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Your question is incomplete but your full question was:
Scientists have changed the model of the atom as they have gathered new evidence. One of the atomic models is shown below.
What experimental evidence led to the development of this atomic model from the one before it?
A few of the positive particles aimed at a gold foil seemed to bounce back off of the thin metallic foil.Experiments with water vapor showed that elements combine in specific proportions.Equations were used to identify regions around the nucleus where electrons would likely be.Cathode rays were bent in the same way whenever a magnet was brought near them.12. The carbon cycle goes through living systems in the process of:
A) decomposition
B) respiration
C) photosynthesis
D) all of the above
13. During respiration, the herbivore in Figure 4. uses food and oxygen
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Answer: D
Explanation: It goes through all that were listed.
You and your friend each grab a cup of chocolate milk. Your friend says, "This feels hot". However, you think that it feels cold. Explain how this difference could be possible.
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Answer:
Explanation:
The difference could be possible because heat is transfer. When my grabbed a cup of chocolate drink, heat is transfer from the cup to my friend's body through a form of heat transfer called conduction.
Conduction is a type of heat transfer where heat is transfer between close atoms or molecules by collision. It o cur between solid and liquids that are close together.
While when I grabbed the cup, there is no form of heat transfer from the cup to my body.
What other effects does the shortened dystrophin have on a cell?
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Answer:
Skeletal and cardiac muscle cells without functional dystrophin become damaged as the muscles repeatedly contract and relax with use.The damaged cells weaken and die over time,causing the charasteristic muscle weakness and heart problems seen in Duchenne and Becker muscular dystophy.
Scientists have evidence that Glossopteris was found in what is now India, Antarctica, Australia, and Madagascar. What does this tell you about the position of the continents 225 million years ago?
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Answer:
these continents were joined as a single landmass
Explanation:
Alfred Wegener proposed the 'Continental Drift Hypothesis' which stated continents were joined into a single great landmass called Pangaea. Pangea was a supercontinent that was assembled during the late Paleozoic and early Mesozoic eras, from about 330 to 200 million years ago. During the early Mesozoic, Pangea began to separate into continents observed today. It is for that reason that the same fossils can be found in very different geographic-climatic regions, evidencing that in the past continents were joined into larger landmasses.
Which basic function of life is exemplified when a single-celled organism uses its eyespot to sense light?
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Answer:
Responding to changes in its environment
Explanation:
Light is an environmental factor and being able to sense and react to environmental changes is a function of life
Answer: responce to stimuli
Explanation:
What does wood combine with when it is burned?
a. Carbon dioxide
b. Oxygen
c. Water
d. It doesn’t combine with anything
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Answer:
oxygen
Explanation:
o2 is needed to make fire
The shape of each of the molecules is important because
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Answer:
The shape of a molecule is important because it is a feature that often determines the fate of a compound regarding molecular interactions.
Explanation:
Answer:answer is 2
Explanation:
What is meningitis? (ANATOMY)
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Answer:
Inflammation of brain and spinal cord membranes, typically caused by an infection.
Meningitis is usually caused by a viral infection but can also be bacterial or fungal. Vaccines can prevent some forms of meningitis.
Symptoms include headache, fever, and stiff neck.
Depending on the cause, meningitis may get better on its own, or it can be life-threatening, requiring urgent antibiotic treatment.
Explanation:
Answer:
Inflammation of the brain and spinal cord membranes, typically caused by an infection.
Explanation:
Meningitis is usually caused by a viral infection but can also be bacterial or fungal. Vaccines can prevent some forms of meningitis.
Symptoms include headache, fever, and stiff neck.
Depending on the cause, meningitis may get better on its own, or it can be life-threatening, requiring urgent antibiotic treatment.
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if genes are on different chromosomes, the law of independent assortment states that -
gene pairs always stay together
half an organism's gametes have one allele per pair
gene pairs segregate randomly and independently of each other.
one allele is always dominant
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Answer:
Gene pairs segregate randomly and independently of each other.
Explanation:
Genes are the basic units of hereditary and are located on chromosomes. According to Gregor Mendel's law of independent assortment which states that the alleles of two (or more) different genes are sorted into gametes independently of one another. This means that the allele a gamete receives for one gene does not influence the allele the same gamete receives for another gene.
For example, in a the pea plants used by Mendel in his studies, the genes for seed shape and flower color were inherited independent of each other by the offspring of the parent pea plants. Therefore, Mendel concluded that the inheritance of each trait was independent of the other.
Answer:
gene pairs segregate randomly and independently of each other
Explanation:
According to the Law of Independent Assortment, if two genes are on different chromosomes, then the alleles for these genes separate independently of each other during the formation of eggs or sperm.
This means that genes separate independently of one another. This explanation most closely matches C) gene pairs segregate randomly and independently of each other.
Hunter’s velocity was 4.5 m/s. At the end of his race, his velocity was the same. Which best describes his movement?
His movement stopped.
His acceleration is zero.
His time was constant.
His acceleration was positive.
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Considering the definition of acceleration, since the speed does not change, his acceleration is zero.
Definition of accelerationA body has acceleration when its speed varies over time, either in magnitude or in direction.
In other words, the acceleration of a body is a physical magnitude that indicates the variation in speed experienced by a body in its displacement as a function of the time spent on it.
Therefore, a moving body is changing acceleration as its speed changes. As speed is a magnitude that considers the speed of a mobile and its direction, the changes that occur in speed will be due to variations in speed and/or direction.
Hunter’s movementHunter’s velocity was 4.5 m/s. At the end of his race, his velocity was the same. Since the speed does not change, his acceleration is zero.
Finally, the correct answer is second option.
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Answer:
B) his acceleration is zero.
Explanation:
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Give at least 2 examples of the crucial roles enzymes do for the body
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Answer:
Explanation:
the enzymes in your body help to perform very important tasks. These include building muscle, destroying toxins, and breaking down food particles during digestion. An enzyme's shape is tied to its function. Heat, disease, or harsh chemical conditions can damage enzymes and change their shape
Which gas is produced by photosynthesis?
OA.
oxygen
OB.
B. hydrogen
OC.
nitrogen
OD D.
argon
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3. Arrange the following terms in order from smallest/least complex to largest/
most
complex.
O A. Tissue, molecule, cell, organ, organ system, organism
OB. Molecule, cell, tissue, organ, organ system, organism
OC. Tissue molecule, cell, organism, organ, organ system
D. Molecule, cell, tissue, organism, organ, organ system
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Answer:
B.- Molecule, cell, tissue, organ, organ system, organism
Explanation: Found it in the reading assignment, and double checked it to make sure it was right :)
The molecule, cell, tissue, organ, organ system, and the organism is arranged from least or smallest to the most or largest complex. Thus, option B is correct.
What is the level of organization?The level of an organization defines the relationship starting from simple to complex arrangements. It starts with the most simple and small order and further goes up to the complex and largest structures.
The molecules are the smallest structures after an atom that combines to form a cell. The cell is the fundamental unit that combines together to make a tissue that further forms an organ. The different organs combinedly form an organ system and finally an organism.
Therefore, the molecule is the simplest and the organism is the most complex.
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