what is the difference between an f and an hfr cell? group of answer choices an f cell has genes that enable it to extend a pilus to a recipient cell, hfr does not. an hfr cell can be both a donor and a recipient, f can be only a donor during conjugation. the hfr has only a portion of the f factor genes while f has all of the f factor genes. the f factor genes are present in both but are incorporated into the bacterial chromosome in hfr cells only.
Answers
The correct option is D, the difference between an F+ and an Hfr cell is the f factor genes are present in both but are incorporated into the bacterial chromosome in hfr cells only.
A chromosome is a shape discovered in the nucleus of a cellular that includes genetic records in the form of genes. Genes are segments of DNA (deoxyribonucleic acid) that encode instructions for the development, function, and reproduction of an organism. Chromosomes are made up of DNA and proteins called histones, which help to package the DNA into a compact form.
The chromosomes are arranged in a specific order, and each chromosome pair contains genes that control different traits, such as eye color, height, and susceptibility to certain diseases. Changes or mutations in chromosomes can lead to genetic disorders and diseases. Chromosomes are important for the proper functioning and development of all living organisms, and the study of chromosomes has led to many important discoveries in genetics and biology.
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Complete Question: -
What is the difference between an F+ and an Hfr cell?
a. an f cell has genes that enable it to extend a pilus to a recipient cell, hfr does not.
b. an hfr cell can be both a donor and a recipient, f can be only a donor during conjugation.
c. the hfr has only a portion of the f factor genes while f has all of the f factor genes.
d. the f factor genes are present in both but are incorporated into the bacterial chromosome in hfr cells only.
Related Questions
While looking in a microscope, you see this same specimen, which is magnified 100X. Determine its type of cells and the level of biological organization. Give evidence used to make your determination.
Answers
Which of the following best describes energy conversion in cellular respiration?
A. Light energy converted to chemical energy
B. Stored chemical energy converted to usable chemical energy
C. Stored chemical energy converted to usable thermal energy
D. Stored chemical energy converted to light energy
Answers
Answer:
A brainliest?
Explanation:
1. What is the average, maximum and minimum percent germination for each
treatment?
2. Which treatment had the biggest influence on germination?
3. Knowing that in the Midwest and other parts of the country we use sodium
chloride to treat roads in the winter, how could this effect vegetation along
roadways in the spring?
x
Number of seeds that sprouted/germinated
Group Number
# of Seeds per treatment
0% Salt
6% Salt
12% Salt
1
15
14
12
8
2
15
15
13
6
3
17
17
14
5
4
18
17
15
10
5
20
20
18
9
6
16
15
13
11
Answers
1. The average, maximum, and minimum percent germination for each treatment can be calculated by taking the mean, maximum, and minimum values of the number of seeds that germinated for each treatment group. For the 0% salt treatment, the average percent germination is (14+15+17+17+20+15)/6 = 16.33, the maximum percent germination is 20, and the minimum percent germination is 14. For the 6% salt treatment, the average percent germination is (12+13+14+15+18+13)/6 = 14.17, the maximum percent germination is 18, and the minimum percent germination is 12. For the 12% salt treatment, the average percent germination is (8+6+5+10+9+11)/6 = 8.17, the maximum percent germination is 11, and the minimum percent germination is 5.
2. The treatment that had the biggest influence on germination was the 12% salt treatment, as it had the lowest average, maximum, and minimum percent germination values compared to the other two treatments.
3. The use of sodium chloride to treat roads in the winter could negatively impact vegetation along roadways in the spring, as the salt can leach into the soil and reduce the ability of plants to absorb water and nutrients. This can lead to reduced germination rates and stunted growth for plants along roadways.
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Are viruses alive? This question is debated among scientists throughout the world. Consider the following passage. Scientific researchers discovered agents that behaved like bacteria causing diseases such as rabies and hoof-and-mouth, but were much smaller. At this time it became the general view that viruses were biologically "alive." This perception changed in 1935 when the tobacco mosaic virus was crystallized and scientists demonstrated that the particles lacked any mechanisms necessary for metabolic function. It was determined that viruses consisted of a nucleic acid, DNA or RNA, surrounded by a protein shell and the scientific view changed: viruses are complex biochemical mechanisms but not alive.
According to the passage, the MOST IMPORTANT evidence supporting the opinion that viruses are not alive is that they
Responses
A are much smaller than bacteria. are much smaller than bacteria.
B contain DNA or RNA. contain DNA or RNA.
C cause disease.cause disease.
D do not have a cellular structure.
Answers
Answer: D
Explanation:
Arteries have a tissue in their middle and internal vessel walls that veins contain less, called __________ tissue.
Answers
Arteries have a tissue in their middle and internal vessel walls that veins contain less, called muscular tissue.
Muscular tissue, also known as vascular smooth muscle, is a type of tissue that arteries have in their middle and internal vessel walls, but veins have less of. It's a particular type of smooth muscle tissue that allows for the constriction and dilation of blood vessels in response to neural and chemical signals. Muscular tissue in arteries is responsible for regulating blood flow and pressure. It achieves this by contracting or relaxing in response to neural or chemical signals. This process is essential for the proper functioning of the circulatory system, as it ensures that blood is supplied to the body's organs and tissues at the appropriate rate and pressure.
In conclusion, arteries have a tissue in their middle and internal vessel walls that veins contain less of, known as muscular tissue. Muscular tissue regulates blood flow and pressure, and it enables arteries to contract and relax in response to neural and chemical signals, ensuring the proper functioning of the circulatory system.
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In what ways is vaccination different from other types of personal health decisions
Answers
Answer:
Vaccination is different from other types of medical benefits as it prevents us from diseases.
We take medicine to cure disease not to prevent the body from being diseased. But vaccination is used to prevent the body from being affected by harmful disease such as polio, hepatitis B, et cetera.
The attenuated or live form of microorganisms are injected in the body so that the body is prepared for the further attack by the microorganism.
Other medical health benefits cures the disease.
Explanation:
Determine the rate of water loss at 12:00.
Use the tangent on the graph above (attatched).
Give your answer in:
- cm^3 per minute
- standard form.
Answers
The rate of water loss at 12:00 is 0.0952 cm³/minute. In standard form, the answer is 9.52 × 10⁻² cm³/minute.
How to determine rate of water loss?The tangent on the graph intersects the y-axis at 190 cm³. The slope of the tangent is 0.0952 cm³/minute. Therefore, the rate of water loss at 12:00 is 0.0952 cm³/minute. In standard form, the answer is 9.52 × 10⁻² cm³/minute.
To determine the rate of water loss at 12:00:
Find the intersection of the tangent with the y-axis. This will give you the amount of water loss at 12:00.
Find the slope of the tangent. This will give you the rate of water loss at 12:00.
Convert the rate of water loss from cm³/hour to cm³/minute by dividing by 60.
Express the answer in standard form by moving the decimal point two places to the left.
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What role do salt and washing liquid play in the breakdown of the cell membrane? please I need help
¿que papel juegan la sal y el liquido de lavado en la descomposición de la membrana celular? porfavor necesito ayuda
Answers
Answer: See the explanation for complete explanation.
Explanation:
Alright, so normally in Washing Liquid and Detergents they contain sodium laurel sulfate, which cleans dishes by removing fats and proteins. It acts the same way in the extraction of DNA, pulling apart the lipids and proteins that make up the membranes surrounding the cell and nucleus. Once these membranes are broken apart, the DNA is released from the cell.
Salt however, is different, it can trigger osmosis by attracting the water and causing it to move toward the membrane. Being solute, salt diffuses, spreading out the concentration that creates a solution.
Hope this helps!
BB76
A high functioning pineal gland would lead to which of the following?
Answers
Answer: The main function of the pineal gland is to receive information about the state of the light-dark cycle from the environment and convey this information to produce and secrete the hormone melatonin.
Explanation:
Answer:
It would most likely create more of the hormone melatonin.
Explanation:
Because that's what the pineal glands main function does, so if its high functioning, its more likely to release that hormone.
I'm sorry if this turns out wrong
A cell membrane protein receptor that produces a multiple pathway response and regulates/coordinates many cell function _____.
Answers
Answer: iii
Explanation:
Questions (25)
1 - Quiz
What body system helps break down food?
Answers
Answer:
The digestive system
Explanation:
The digestive system breaks down food
Answer:
digestive also know as homostasis
Explanation:
A fish farmer has a large pool used to grow a species of fish. The farmer decides to add a second species of fish to the pool. Both fish species feed on the same type of food, but the fish farmer does not increase the amount of food added to the pool, maintaining the same carrying capacity in the pool.
Which graph shows how the population of the two fish species will change?
Answers
Answer:
D
Explanation:
Explanation: The capacity of fish to the ratio of population change increased and showed a variable degree of measurements.
In the context of the fibers that extend from a neuron's cell body, the fiber that carries signals toward the neuron's cell body is called a(n)?
Answers
The fiber that transmits signals away from the cell body of a neuron is referred to as an axon in the context of the fibers that extend from the neuron.
Describe an axon:Each neuron in your brain has a single, long cable that protrudes from the cell's center. The place where a neuron's electric signals leave the cell to also be picked up by neighbouring cells is an axon, a cable that is considerably thinner than a human hair.
How many different kinds of axons exist?Axons come in two varieties: myelinated and unmyelinated. In the central and peripheral nervous systems, glial cells myelinate an axon. Glial cells of the type known as Schwann cells are present in the peripheral nervous system.
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The picture above shows the early embryos of a human and a chicken. Gill slits and tails are shown in both. What does
this most likely suggest?
Answers
Answer: C
Explanation:
:}
The inner layer of the uterus is called the
O a. endometrium.
O b. perimetrium.
O c. myometrium.
O d. fundus.
Answers
Answer:
A.endometrium
Explanation:
The endometrium is the inner layer that lines the uterus. It is made up of glandular cells that make secretions. The myometrium is the middle and thickest layer of the uterus wall.
Answer:
your answer is A. Endometrium
Explanation:
What is the best method for describing and mapping terrestrial biomes? Biome Metric System (BMS) There's no standardized method, so the best method is to evaluate climatic conditions and the dominant form of vegetation International System of Biomes (ISB) Universal Biome System (UBS) There's no standardized method, so the best method is to evaluate human uses and valuation of the area
Answers
The best method for describing and mapping terrestrial biomes typically involves evaluating climatic conditions and the dominant form of vegetation. This approach is widely used and forms the basis for various classification systems, including the Köppen-Geiger climate classification system and the Holdridge life zone classification system. These systems consider factors such as temperature, precipitation, and vegetation types to classify and map different biomes.
While there is no universally standardized method for describing and mapping biomes, the evaluation of climatic conditions and vegetation provides a robust and scientifically grounded approach. It allows for the identification of distinct biomes based on their ecological characteristics and helps understand the distribution of different biomes across the Earth's surface.
Other approaches, such as the International System of Biomes (ISB) or Universal Biome System (UBS), may incorporate additional factors or emphasize human uses and valuation of the area. These approaches may be more focused on human perspectives or conservation priorities rather than purely ecological considerations. However, when it comes to a scientific understanding of biomes, evaluating climatic conditions and vegetation remain key factors.
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What are the advantages and limitations to using fossils to study the living things that lived in the past?
Answers
~Hello
Fossils are one of the best evidence of evolution, mainly because they are the remains of living organisms from the past, which allow us to compare them with living organisms. However, the fossil record is notoriously incomplete and it is also biased in favor of animals with hard body parts, such as skeletons and shells. Soft bodied organisms and soft body parts are rarely preserved and there are often huge gaps in some evolutionary sequences. For example, Archaeopteryx is the earliest known bird, but it is already a bird, nothwithstanding some of the features that are unquestionably reptilian. The earliest known reptile with feathers is Longisquama, but there is a gap of some 75 million years between Longisquama and Archaeopteryx, and nothing has yet been found that are intermediate between these two important fossils.
Finally, DNA is virtually unobtainable from fossils, making it nearly impossible to compare the DNA of most fossils with living organisms. In terms of phylogenetic tree construction, DNA data is far superior to fossil evidence. However, if not for the existence of fossils, DNA data alone would be unconvincing as evidence of evolutionary change.
~ Hope this could help
As fossils provide direct evidence of past life forms, allowing scientists to study the anatomy, behavior, and ecology of extinct organisms, and also allow scientists to track the evolution of life on Earth over long periods of time.
What is a fossil?Fossils have several advantages as a source of information about past lives. One major advantage is that they provide direct physical evidence of the existence of extinct organisms and the conditions they lived in. This can help researchers understand the evolution of different species over time and how they adapted to changing environments. One limitation is that not all organisms leave fossils behind, so the fossil record is incomplete and biased towards certain types of organisms that were more likely to be preserved. This means that there may be large gaps in our understanding of the evolutionary history of certain groups of organisms.
Hence, fossils provide direct evidence of past life forms, allowing scientists to study the anatomy, behavior, and ecology of extinct organisms, and also allow scientists to track the evolution of life on Earth over long periods of time.
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Which range of sound waves can be reflected and used for finding distances, scanning documents, and cleaning engine parts
PLZ Help!!!!!♂️♂️♂️♂️
Answers
Answer:Infrasonic.
Explanation:Because it describes the atomspheric waves with different frequncies.
(GIVING BRAINLIEST!!)
Kendra wonders what would happen if the oceans did not exist on Earth. Based on her understanding of the oceans and the water cycle she predicts that Earth would become warmer, with less rain, more clouds, and that living things would not survive. Which part of her prediction is incorrect?
A) That living things would not survive
B) That Earth would get warmer
C) That there would be less rain
D) That there would be more clouds
Answers
Answer:
That there would be more clouds is the incorrect answer
Explanation:
What is a vector
A quantity that has both mass and speed.
A quantity that has both size and direction. Help asap
Answers
Explanation:
As I think Option 2 is the correct one.
why is the understanding of classification an important lofe skill?
Answers
Answer:
It helps in the identification of living organisms as well as in understanding the diversity of living organisms. To understand and study the features, similarities and differences between different living organisms and how they are grouped under different categories.
Answer:
Depending on What your classifying it can help you get a better social life and a good economic life, To classify is the same thing as identify so with that being said classification is one of many advantages of your life.describe the five conditions required for hardy-weinberg equilibrium and recognize that all these conditions are not met in real populations, hence allele and genotype frequencies change over time
Answers
The conditions to maintain the Hardy-Weinberg equilibrium are: no mutation, no gene flow, large population size, random mating, and no natural selection In a population with random mating.
the Hardy-Weinberg principle connects genotype frequencies to allele frequencies. Consider a population where there is segregation between two alleles (A and B) at a single locus. The letters p and q stand for the frequency of alleles A and B, respectively.
According to the Hardy-Weinberg principle, genotype frequencies will be p2, 2pq, and q2 after one generation of random mating. Genotype frequencies are anticipated to remain constant in the absence of additional evolutionary processes (such as natural selection), and the population is considered to be at Hardy-Weinberg equilibrium. There are several presumptions that the Hardy-Weinberg principle is based on.
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Which property of DNA contributes the most to DNA's ability to
replicate?
A. DNA coils into a long spiral or helix
B. DNA has two complementary strands that can separate
C. Each strand of DNA has a sugar-phosphate backbone
D. Each strand of DNA can be made of a unique sequence of
four different bases
Answers
The property of DNA contributes the most to DNA's ability to replicate is DNA has two complementary strands that can separate. Thus, option B is correct.
In how many steps replication occurs?Replication has been occurs in three major steps is the opening of the double helix and separation of the DNA strands, the priming of the template strand, and the assembly of the new DNA segment. During separation, the two strands of the DNA double helix uncoil at a specific location called the origin.
DNA replication has been known the biological process of producing two identical replicas of DNA from one original DNA molecule.DNA replication occurs in all living organisms acting as the most essential part of biological inheritance.
This is essential for cell division during the growth and repair of damaged tissues, while it also ensures that each of the new cells receives its own copy of the DNA. The cell possesses the distinctive property of division, which makes replication of DNA essential.
Therefore, The property of DNA contributes the most to DNA's ability to replicate is DNA has two complementary strands that can separate. Thus, option B is correct.
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All organisms in the kingdom Plantae
A.
are multi-celled, photosynthetic, and contain membrane-bound organelles.
B.
reproduce sexually, contain membrane-bound organelles, and photosynthetic.
C.
are multi-celled, heterotrophic, and do not contain membrane-bound organelles.
D.
reproduce asexually, do not contain membrane-bound organelles, and photosynthetic.
Answers
All organisms in the Kingdom Plantae A. are multi-celled, photosynthetic, and contain membrane-bound organelles.
PlantaeKingdom Plantae includes autotrophic organisms which can prepare their own food by the process of photosynthesis. All organisms in Kingdom Plantae are multicellular and they also contain membrane bound organelles like mitochondria, nucleus, ribosomes, chloroplast and others.Learn more about Kingdom Plantae:
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all scientist try to base their conclusions on?
Answers
Answer:
data and measurements
Explanation:
A protein that functions as a biological catalyst is called:.
Answers
Answer:
enzyme, It speeds up the rate of a specific chemical reaction in the cell.
Explanation:
which area of the cytoplasm near the nucleus coordinates the building and breaking of microtubules in the cell?
Answers
The centrosome is the area of the cytoplasm near the nucleus that coordinates the building and breaking of microtubules in the cell.
Microtubules are essential components of the cytoskeleton and are involved in various cellular processes such as intracellular transport, cell division, and cell shape maintenance. They are polymers of alpha and beta tubulin dimers that form linear protofilaments, which in turn interact laterally to form a hollow cylindrical microtubule. The formation, maintenance, and disassembly of microtubules are regulated by various microtubule-associated proteins and molecular motors.
The centrosome is the main microtubule-organizing center in animal cells, and it consists of two centrioles surrounded by pericentriolar material (PCM). The PCM contains various proteins that are involved in microtubule nucleation and anchoring, including gamma-tubulin, pericentrin, and centrosomin. The centrosome serves as a site for the nucleation and organization of microtubules, and it also regulates the dynamic instability of microtubules by controlling the addition and loss of tubulin subunits at their ends.In summary, the centrosome is the area of the cytoplasm near the nucleus that coordinates the building and breaking of microtubules in the cell. It plays a critical role in microtubule organization and dynamics, and it is essential for many cellular processes.
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An unusually cold January in Florida destroyed entire fields of tomatoes. Florida’s growers are shipping only a quarter of their usual 5 million pounds a week. The price has risen from $6.50 for a 25-pound box a year ago to $30 now.
1.1. Make a graph to illustrate the market for tomatoes before the unusually cold January and in the same graph show how the events in the news clip influence the market for tomatoes. (0.5)
1.2. In April 2014, the money price of a carton of milk was $2.01 and the money price of gallon of gasoline was $3.63. Calculate the relative price of a gallon of gasoline in terms of milk. (0.5) Frigid Florida Winter is Bad News for Tomato Lovers An unusually cold January in Florida destroyed entire fields of tomatoes. Florida's growers are shipping only a quarter of their usual 5 million pounds a week. The price has risen from $6.50 for a 25 -pound box a year ago to $30 now. 1.1. Make a graph to illustrate the market for tomatoes before the unusually cold January and in the same graph show how the events in the news clip influence the market for tomatoes. (0.5) 1.2. In April 2014, the money price of a carton of milk was $2.01 and the money price of gallon of gasoline was $3.63. Calculate the relative price of a gallon gasoline in terms of milk. (0.5)
Answers
1.1. Graph to illustrate the market for tomatoes before the unusually cold January and in the same graph show how the events in the news clip influence the market for tomatoes
Here, the price is $6.50 and the quantity supplied is 5 million pounds per week. The equilibrium is at the intersection of the supply and demand curve at point E.
Now, the events of the news clip influence the market for tomatoes, causing a decrease in supply due to the destruction of entire fields of tomatoes, resulting in a shift of the supply curve from S1 to S2.
The new equilibrium is at point F where the price has increased to $30 and the quantity demanded and supplied have decreased to 1.25 million pounds per week.
1.2. In April 2014, the money price of a carton of milk was $2.01 and the money price of a gallon of gasoline was $3.63.
To calculate the relative price of a gallon of gasoline in terms of milk, we use the formula:
Relative price = Price of gasoline / Price of milk
Relative price = $3.63 / $2.01 = 1.81
Therefore, the relative price of a gallon of gasoline in terms of milk is 1.81.
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In tomato plants, the allele for red fruit color (R) is dominant to the allele for yellow fruit color (r). The allele for round-shaped fruit (F) is dominant to the allele for pear-shaped fruit (f).
Two tomato plants, heterozygous for fruit color and fruit shape, are crossed. The Punnett square for this dihybrid cross is shown below.
Answers
The Punnett square for the dihybrid cross between the two tomato plants would be:
| R F | R f | r F | r f |
------|------|------|------|------|
R F | RF | Rf | rF | rf |
------|------|------|------|------|
R f | RF | Rf | rF | rf |
------|------|------|------|------|
r F | RF | Rf | rF | rf |
------|------|------|------|------|
r f | RF | Rf | rF | rf |
------|------|------|------|------|
A Punnett square is a diagram used to predict the possible genetic combinations that can result from a cross between two individuals. In this dihybrid cross, the tomato plants are heterozygous for fruit color (red dominant, yellow recessive) and fruit shape (round dominant, pear-shaped recessive).
The Punnett square represents all possible combinations of alleles that can occur when gametes from the two parents combine. Each box in the square represents a possible genotype for the offspring. The letters in each box represent the alleles inherited from the parents.
By analyzing the Punnett square, you can determine the probability of different genotypes and phenotypes in the offspring. For example, in the square, there are four possible combinations for fruit color: RF (red, round), Rf (red, pear-shaped), rF (yellow, round), and rf (yellow, pear-shaped). The square helps visualize the potential outcomes of the genetic cross.
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Can someone answer 14-6 please? Will mark brainliest
Answers
14 = Newton's third law is: For every action, there is an equal and opposite reaction.
15 = newton's third law says that forces must always occur in action and reaction forces.
16= a ball hitting a baseball