Answer:
replication fork
Explanation:
The deoxyribonucleic acid (DNA) is a double-stranded helix composed of two long chains of nucleotides. The replication fork is a Y-shaped structure by which both DNA strands are separated in order to be replicated during cell division. In a cell, DNA replication starts at specific sites in the genome referred to as 'origins of replication'. A replication fork is generated by helicase enzymes that unwind and separate the DNA double helix strands by interrupting hydrogen bonds that hold the two DNA strands together. These DNA strands act as templates for the leading and lagging DNA strands. During DNA replication, the leading strand is synthesized continuously in the same direction as the replication fork, while the lagging DNA strand is synthesized in a direction away from the replication fork, in small pieces of DNA called Okazaki fragments.
1. Indicate patient history details that are consistent with the patient having an infection. How do the patient’s signs and symptoms compare to a healthy individual?
2. Indicate what you suspect might be the etiological agent. What additional history would you like to have?
3. Based on the microbe you suspect is responsible for the symptoms, from which body sites would you recommend taking culture?
4. . Give culture and test characteristics of the microbe you suspect might be causing the disease. If you suspect more than one might be responsible, how might you distinguish the two?
5. Indicate virulence factors possessed by this microbe that might be responsible for the symptoms. Indicate how it produces the symptoms you observe in the patient.
6. Is this microbe normal microbiota at the culture site?
7. What type of treatment would be used for this patient
Answer:
All the answers are there in the photo
Which of the following describes the products of mitosis?
two unique cells
one cell identical to the parent
cell death
two daughter cells that have identical DNA to the parent
Answer:
The products of mitosis are two diploid cells, whereas the products of meiosis are four haploid cells. -Mitosis and meiosis both begin with duplicated chromosomes. -In mitosis the daughter cells are genetically identical, but in meiosis the daughter cells are genetically varied.
Explanation:
the following are examples of somatic cells, except?
Answer:
The only cells that aren't considered somatic cells in the body is the reproductive cells.
Why was the Battle of Bunker Hill important in the war for American independence from Britain? A. The battle was the first important victory for the fledgling Continental Army. B. The battle was the first important victory for General George Washington. C. Although the British ultimately won the battle, they lost their best general. D. Although the British ultimately won the battle, they suffered heavy casualties.
Answer: D. Although the British ultimately won the battle, they suffered heavy casualties.
Explanation: Even though they lost, the colonial forces were able to inflict a substantial amount of damage resulting in lots of casualties.
explain how thermal pollution can impact on the quality of water biodiversity
Which statement correctly compares mass and weight?
A.Both depend on the force of gravity pulling on an object B.The basic unit of both is the kilogram C.Both mass and weight ofan object would be less on the moon than on Earth D.Weight varies with location, but mass does not vary
Answer:
D. Weight varies with location, but mass does not vary
Explanation:
Weight can be defined as the force acting on a body or an object as a result of gravity.
Mathematically, the weight of an object is given by the formula;
[tex] Weight = mg [/tex]
Where;
m is the mass of the object.g is the acceleration due to gravity.Mass can be defined as a measure of the amount of matter an object or a body comprises of. The standard unit of measurement of the mass of an object or a body is kilograms.
Irrespective of the location of an object or a body at a given moment in time, the mass (amount of matter that they're made up of) is constant. This ultimately implies that, whether you're in the moon, space, earth or any other place, your mass remains the same (constant).
Hence, the statement that correctly compares mass and weight is that, weight varies with location, but mass does not vary. This is simply because acceleration due to gravity changes with location i.e its value varies with the planets.
Which event triggers the start of black hole formation?
Answer:
A stellar-mass black hole forms when a star with more than 20 solar masses exhausts the nuclear fuel in its core and collapses under its own weight. The collapse triggers a supernova explosion that blows off the star's outer layers.
Explanation:
Answer:
1. The universe's galaxies have evolved since what point in time?
2. Which proportion of the universe's galaxies can be seen from Earth?
3. Which was used to create the first image of a black hole?
4. Which of these describes a nebula?
5. Why are most stars not destroyed in a galaxy collision?
6. What do supernova remnant and planetary nebulae have in common? Select the three correct answers.
7. Which of the following is an accurate description of cosmic microwave background (CMB) radiation? Select the two correct answers.
8. Select the correct answers from the list.
The model of galaxy formation in which sections of gas clouds collapse into small pieces which repeatedly combine into larger pieces under the influence of gravity is called the ____ model or the ____ model.
9. Drag and drop the words into the correct locations. Answers may be used once, more than once, or not at all.
Galaxies can be grouped by the age of the stars they tend to contain, with ____ galaxies having the youngest stars and ____ galaxies having the oldest stars.
10. Which event triggers the start of black hole formation?
Explanation:
1. 13.8 billion years ago, right after the universe first formed
2. far less than 1 percent
3. radio waves from matter at the edge of the black hole
4. cloud of gas and dust
5. Galaxies are mostly empty space.
6. They emit non-visible radiation.
They are composed of matter from dying stars.
They contribute matter to interstellar space.
7. CMB is uniformly distributed and of a uniform temperature across the universe.
CMB is remnant radiation from the Big Bang.
8. inside-out / bottom-up
9. irregular / elliptical
10. A massive star depletes its stores of hydrogen and helium
Which is NOT a passive transport mechanism across the membrane of a plant cell?
Which is NOT a passive transport mechanism across the membrane of a plant cell?
Facilitated diffusion
Diffusion
Osmosis
Receptor-mediated endocytosis
Answer:
the company has also announced plans
How does water help drive the rock cycle?
A. It is abundant on Earth's surface.
B. It is an agent of weathering and erosion.
C. It helps Earth maintain a relatively constant temperature.
D. It maintains a liquid state in a relatively narrow range of temperatures
ap3x
Is there anything we as a society can do to prevent these pandemic from occurring
The only thing you can do now is to try do the necessary pre-causion, which are;
Always wear maskAlways be sanitizedAlways wear hand glovesKeep social distancingHELP PLS ASAP
2. Complete the following chart about the three main research projects
that led to the identification of DNA as the genetic material.
RESEARCHERS' NAMES
SUMMARY OF RESEARCH
SUMMARY OF CONCLUSIONS
Griffith
found a "transforming principle"
Avery
Hershey and Chase
identified the substance that phages inject
into bacteria
Answer:
Griffith's experiment, reported in 1928 by Frederick Griffith, was the first experiment suggesting that bacteria are capable of transferring genetic information through a process known as transformation. Griffith's findings were followed by research in the late 1930s and early 40s that isolated DNA as the material that communicated this genetic information.
Griffith's experiment discovering the "transforming principle" in pneumococcus bacteria.
Pneumonia was a serious cause of death in the wake of the post-WWI Spanish influenza pandemic, and Griffith was studying the possibility of creating a vaccine. Griffith used two strains of pneumococcus (Streptococcus pneumoniae) bacteria which infect mice – a type III-S (smooth) which was virulent, and a type II-R (rough) strain which was nonvirulent. The III-S strain synthesized a polysaccharide capsule that protected itself from the host's immune system, resulting in the death of the host, while the II-R strain did not have that protective capsule and was defeated by the host's immune system. A German bacteriologist, Fred Neufeld, had discovered the three pneumococcal types (Types I, II, and III) and discovered the quellung reaction to identify them in vitro. Until Griffith's experiment, bacteriologists believed that the types were fixed and unchangeable, from one generation to another.
In this experiment, bacteria from the III-S strain were killed by heat, and their remains were added to II-R strain bacteria. While neither alone harmed the mice, the combination was able to kill its host. Griffith was also able to isolate both live II-R and live III-S strains of pneumococcus from the blood of these dead mice. Griffith concluded that the type II-R had been "transformed" into the lethal III-S strain by a "transforming principle" that was somehow part of the dead III-S strain bacteria.
Completing the attached chart about the three main research projects ;
Griffith summary of research : Identified what R-strain bacteria took up from heat-killed S bacteria,Avery summary of research : Identified protein as not the transforming factorAvery summary of conclusion : Found a " transforming principle "Hershey and chase summary of conclusions : Found the " Infection and replication principle "All three researches were carried out to discover the genetic material ( DNA ) which is responsible for the transfer of genetic traits from parent cells to daughter cells.
Griffith research shows that bacterias can get there DNA ( genetic material ) through a process known as transformation and the experiment to prove this research was carried out by killing S bacterias through heat and then adding them to R-strain bacteria. Griffith observed and concluded that the Genetic materials of the S bacteria was taken up by the S -bacterias through a process known as " transforming principle "
During Avery research for the genetic material ( DNA ) Avery treated a mixture with DNA-destroying enzymes to see if the colonies of the mixture will transform but they failed to transform which proves that proteins are not the transforming factors and that DNA is the genetic material.
Hence we can conclude that Completing the attached chart about the three main research projects is as written above.
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How long does a two toed Salamander live
You observe every fall that the trees in the forest lose their leaves, but by the following fall, the leaves have disappeared. The most accurate explanation for this observation would be:
The tree creates a layer known as the abscission layer, which prevents nutrients and water from reaching the tree and inhibits the growth of the leaves. Hormones in the trees cause the process of abscission.
What is abscission layer?Tiny tubules in the abscission layer are responsible for carrying carbohydrates back into the tree and delivering water to the leaf, flower, or fruit.
The amount of nutrients and water that pass through the tubes is decreased in the autumn because cells in the abscission start to expand and exude a waxy substance.
Abscission of leaves, which takes place in the fall, is the natural loss of an old leaf at the base of the petiole. Many physical and biochemical changes occur during leaf abscission, most of which are controlled by plant hormones.
Therefore, every fall that the trees in the forest lose their leaves.
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g Two linked genes, (A) and (B), are separated by 18 centiMorgans. A man with genotype Aa Bb marries a woman who is aa bb. The man's father was AA BB. What is the probability that their first child will both be ab/ab
Answer:
The probability that their first child will both be ab/ab = 41%.
Explanation:
Available data:
Two linked genes (A) and (B) ⇒ 18 centiMorgans apartMan ⇒ Aa BbMan´s father ⇒ AA BBWoman ⇒ aabbThe recombination frequency is given by the distance between genes. We have to know that 1% of recombinations = 1 map unit = 1cm.
Recombination frequency = 0.18
Man: AaBb
Gametes) AB Parental
ab Parental
Ab Recombinant
aB recombinant
18 centi morgan = 18 % of recombination in total
= % aB + % Ab
= 9% aB + 9% Ab
100% - 18% = 82% of parental in total
= % of AB + % ab
= 41% AB + 41% ab
The frequency for each gamete is:
AB 41%
ab 41%
Ab 9%
aB 9%
Cross: man x woman
Parental) AaBb x aabb
Gametes) AB, Ab, aB, ab ab, ab, ab, ab
Punnett square) AB ( 41%) Ab (9%) aB (9%) ab (41%)
ab AaBb Aabb aaBb aabb
ab AaBb Aabb aaBb aabb
ab AaBb Aabb aaBb aabb
ab AaBb Aabb aaBb aabb
F1) 41% of the progeny is expected to be AaBb
9% of the progeny is expected to be Aabb
9% of the progeny is expected to be aaBb
41% of the progeny is expected to be aabb
During a storm, heavy rain ___________ a large rock into smaller pieces and then those pieces are __________ downstream from one place to another. *
erodes / weather
deposits / eroded
weathered / eroded
discharges / deposits
Answer:
1) erodes
2)deposits
Explanation:
Amino acids join together to create:
A.nucleic acids
B. carbohydrates
C. lipids
D. proteins
Which is a compound?
Answer:
A thing that is composed of two or more separate elements; a mixture is called compound.
5 Drag the tiles to the correct boxes to complete the pairs. Match the terms with their definitions.
Answer:
a sequence of DNA responsible for coding a protein = gene
The complex range of alleles an organism carries for... = genotype
an allele that determines... = dominant gene
the observable characteristics= phenotype
Black-footed ferrets are native to the Great Plains. They spend most of their
time underground in prairie dog burrows. Which factor would increase an
area's carrying capacity for black-footed ferrets?
A. Increased competition for space
B. Increased number of diseases
C. Increased number of predators
D. Increased availability of food
Answer:
D. Increased availability of food
Explanation:
Trust
The factor that would increase an area's carrying capacity for black-footed ferrets is the increased availability of food. The correct option is D.
What is carrying capacity?Carrying capacity is defined as the average population size of a species in a given habitat.
Environmental factors such as adequate food, shelter, water, and mates limit the species population size. If these requirements are not met, the population will decline until the resources recover.
If there is more food available in an area, more black-footed ferrets can survive and reproduce, increasing the species' carrying capacity.
Increased competition for space, more diseases, and more predators would all reduce the carrying capacity of black-footed ferrets by reducing the number of individuals that could survive and reproduce in the area.
Thus, the correct option is D.
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A white blood cell (WBC) encounters bacteria in a scrape on the knee of a child who has fallen off of his bicycle. The WBC’s job is to take the bacteria inside of itself and destroy the bacteria. If the bacteria cannot be moved across the WBC membrane, how will the WBC most likely take it in?
Answer:
The correct answer is - phagocytosis.
Explanation:
Phagocytosis is a type of endocytosis that also engulfs the solid material including microbial pathogens like bacteria and others. In immunity response macrophages, neutrophils and. immature dendritic cells are white blood cells that perform the phagocytosis process to kill the microbes and antigens.
Phagocytosis ingests and digest pathogens and develops an adaptive immune response an essential part of the innate immune system. WBC will most likely take it in through phagocytosis in the given case.
Which process is characterized by the movement of particles from an area of high concentration to an area of low concentration across the plasma membrane without the use of energy?
1) hypertonic transport
2) active transport
3) passive transport
4) dynamic equilibrium
Answer:
3) passive transport
Explanation:
Passive transport is a type of cellular transport that does not require the use of energy to move substances (i.e., ions and molecules) across biological membranes. Passive transport uses concentration gradients to move substances across cell membranes, thereby transporting them from regions of high concentration to regions of low concentration. Passive transport can be divided into 1-osmosis (i.e., movement of solvents), 2-diffusion (i.e., movement of solutes), and 3-facilitated diffusion (i.e., movement of molecules with help of protein channels or carriers), and 4-filtration (i.e., movement of water by using a pressure gradient).
Answer: moves particles from on area of low concentration to an area of high concentration
Explanation: Active transport differs from passive transport because active transport
can only move particles into the cell.
does not require energy to transport particles.
moves particles from an area of low concentration to an area of high concentration.
depends on the random movements of particles to carry them across the membrane.
EDG2023
Calculate: Punnett squares can be used to predict probable outcomes of genetic crosses. To calculate probability, divide the number of one kind of possible outcome by the total number of all possible outcomes. For example, if you toss a coin, the chance it will land on heads is equal to 1 ÷ 2. This probability can be expressed as ½, 0.5, or 50%.
How many total possible outcomes are there?
---------------------------------------------------------------------------------
Complete the table below to show the number of outcomes and the probabilities in both fractions and percentages.
I I
Number of Outcomes I Fraction I Percentage
--------------------------------------------------------------------------------------
FR FR
--------------------------------------------------------------------------------------
FW FW
--------------------------------------------------------------------------------------
FR FW
--------------------------------------------------------------------------------------
Shondra takes notes in class.
Three entries in Shondra's notes are not in the right
place. What can Shondra do to correct her notes?
1. Energy
A Definition - the energy of moving objects
B. Main categories of energy
1. Kinetic - the ability to do work
2 Potential - the energy stored in objects
3. Chemical -- the energy in chemical bonds
C. Forms of energy
1. Gravitational - the energy of a rock on a hill
2 Elastic - the energy in a spring
3. Nuclear - the energy in the nuclei of atoms
4. Electromagnetic wave - the energy from the Sun
5. Electrical - the energy of flowing electrical charges
O Switch "the energy of moving objects" and "the
ability to do work" and place chemical energy under
"Forms of energy."
O Switch "the energy of flowing electrical charges" and
"the energy in a spring" and place kinetic energy
under "Forms of energy."
O Switch "the energy in the nuclei of atoms" and "the
energy stored in objects" and place nuclear energy
under "Main categories of energy."
O Switch "the energy from the Sun" and "the energy of
a rock on a hill" and place electrical energy under
"Main categories of energy."
Mark this and return
Save and Exit
Next
Submit
Answer:
I beileve its A because energy is what gives the ability to do work
Explanation:
Answer:
A
Explanation:
please have a great day.
Biology
what is carbohydrates
Answer:
Simple carbohydrates are broken down quickly by the body to be used as energy. Simple carbohydrates are found naturally in foods such as fruits, milk, and milk products. They are also found in processed and refined sugars such as candy, table sugar, syrups, and soft drinks.
During receiving of a food order, you notice a bag of rice with signs that the bag has been wet. What do you do?
Answer:
Dispose of the bag and check other bags in storage.
Explanation:
Dispose of the bag and check other bags in storage because in the food handlers book or something like that, it ca possible cause problems to the rice
which statement is true of both mitosis and meiosis?
A) The number of
chromosomes is reduced by half.
B) both occur only in reproductive cells.
C) DNA replication occurs before the division of the nucleus.
D) both are involved in asexual reproduction.
Answer:
The statement 'b. both occur only in reproductive cells' is true
What could a human living now and a dinosuar living millions of years ago have in common?
help now pls im desperate
Answer:
We both drank the same water, due to the water cycle
Or you can say: We both breathed the same air
Explanation:
Plz do 10 and 14❤️❤️❤️❤️ Urgently
Answer:
lol
Explanation:
Answer:
lol i cant see it
Explanation:
One of the 7th graders in our school believes that absolute zero is possible on very cold days when it is snowing outside. Is he correct?
Answer: It depends on where u live it can go to the negatives and could be at 0 at some point
Explanation:
Based on Darwin's ideas of descent with modification and natural selection, which observation would best support the idea that
increased competition causes changes in a species?
A) A population of frogs develop greener skin after a hurricane blows away the white flowers in the environment
B) A population of artic foxes develop a brown fur color as warmer temperatures reduce the number of days of
snowfall in the area
C) A population of rattlesnake goes extinct as the water resources in their environment dry up during an
extreme, prolonged drought
D) A population of deer show an increase in antler size over time, which allows them to obtain more mates
during mating season
Answer:
D) A population of deer show an increase in antler size over time, which allows them to obtain more mates during mating season
Based on Darwin's ideas, a population of deer show an increase in antler size over time, which allows them to obtain more mates during mating season (Option D).
What is evolution?According to Darwin, evolution can be defined as descendence with modification, which mainly occurs via natural selection.
Natural selection can be defined as the differential survival and reproduction of the fittest organisms.In this case, intraspecific competition favors deers more adapted to reproduce in the population.In conclusion, based on Darwin's ideas, a population of deer show an increase in antler size over time, which allows them to obtain more mates during mating season (Option D).
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