Answers
Answer: Genes are the blueprints for building the chemical machinery that keeps cells alive. That’s true for humans and all other forms of life. But did you know that with 20,000 genes, people have almost 11,000 fewer genes than water fleas? If the number of genes doesn’t predict complexity, what does?
The answer is that our genetic material contains much more than the units we call genes. Just as important are the switches that turn a gene on and off. And how cells read and interpret genetic instructions is far more complex in people than in those water fleas.
Explanation: In human cells, the double-stranded DNA doesn’t exist as one gigantic molecule. It’s split into smaller chunks called chromosomes (KROH-moh-soams). These are packaged into 23 pairs per cell. That makes 46 chromosomes in total. Together, the 20,000 genes on our 46 chromosomes are referred to as the human genome.
The role of DNA is similar to the role of the alphabet. It has the potential to carry information, but only if the letters are combined in ways that make meaningful words. Stringing words together makes instructions, as in a recipe. So genes are instructions for the cell. Like instructions, genes have a “start.” Their string of base pairs must follow in a specific order until they reach some defined “end.”
Related Questions
If bacteria transformed with a recombinant pUC18 plasmid produce white colonies when grown on plates containing ampicillin and Xgal, which of the following is least likely?
a. They produce β-lactamase that provides resistance to ampicillin.
b. They carry a vector that contains a DNA fragment inserted into the multiple cloning site.
c. They produce functional β-galactosidase that cleaves X-gal.
d. They carry a vector with a lacZ gene that has been disrupted and rendered nonfunctional.
e. They carry a vector with the bla gene used as the selectable marker.
Answers
Answer:
c. They produce functional β-galactosidase that cleaves X-gal.
Explanation:
β-galactosidase is an enzyme capable of catalyzing the enzymatic hydrolysis of β-galactosides into monosaccharides by hydrolyzing the β-glycosidic bond. On the other hand, X-gal is an analog of lactose composed of galactose, which is widely used in laboratories for the detection of β-galactosidase. In the presence of β-galactosidase, X-gal is hydrolyzed by cleaving its β-glycosidic bond, thereby confirming the presence of β-galactosidase.
Using the molecular data, make a general statement which compares the "rabbit-whale" relationship to the "dog-pig" relationship. Does the cladogram agree with this statement? Explain your reasoning
Answers
The molecular data are not found here but rabbits and whales are linked with the dogs and pigs in a cladogram due to evolutionary relationships.
What is a cladogram?A cladogram is a graphical representation used to evidence the relationships between organisms due to a common evolutionary origin.
A cladogram is composed of a root that represents the common ancestor of the group and nodes where taxonomic groups diverge.
Cladograms based on molecular data use the homology level of nucleotide sequences of the genome to determine evolutionary relationships among individuals of different species.
In conclusion, rabbits and whales are linked with dogs and pigs in a cladogram due to evolutionary relationships.
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who is a prime minister of India ??
Answers
Amoeba breathes through its ______is utilized during respiration to release energy.
Answers
Answer:
Amoebas "breathe" by allowing oxygen from their aquatic environments to diffuse through their cell membranes.
Which statement best describes how molecules interact with systems in the
human body
A. Carbon atoms combine with water to form the glucose molecules
that cells use to get the energy they need.
B. Oxygen molecules in the blood enter the cells of all body systems,
and the cells use them to get energy
C. Carbon dioxide molecules leave the body in exhaled air, and
oxygen molecules enter the body in inhaled air.
D. Oxygen molecules help carry other molecules in the blood as it
flows through the body.
Answers
Answer:
b
Explanation:
Which statement describes competition in an environment?
Answers
Answer:
Sunlight shines only three months out of the year.
Explanation:
A specific location in America produces electricity from fossil fuels and geothermal energy. The table below shows the amount of carbon dioxide in the atmosphere of the location from 1960 to 2000.
Year 1960 1970 1980 1990 2000
Carbon dioxide concentration (in parts per million by volume) 317 325 339 318 328
Based on the table, which of these conclusions is most likely correct?
In 1990, electricity was generated only from fossil fuels.
In 1980, electricity was generated only from geothermal energy.
Between 1960 and 1970, there was an decrease in the use of geothermal energy.
Between 1980 and 1990, there was a decrease in the use of geothermal energy and an increase in the use of fossil fuels.
Answers
According to questions in the years 1960 and 1970, the amount of geothermal and fossil fuels decreased because there is low emission of carbon dioxide during these years, hence option C is correct.
What are fossil fuels?Fossil fuels are a source of a nonrenewable form of energy generated by animals and plants which existed in the geological past.
The burning of fossil fuels generates carbon dioxide, so in the year between 1960 and 1970, there was a decrease in the use of geothermal energy.
Therefore, a low concentration of carbon dioxide indicates a decrease in the use of fossil fuels.
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Answer:
Ya tu m'a arnaké
Explanation:
How will ancestral and derived traits differ from one another?
Answers
Derived traits (also known as modified traits) are characteristics that have evolved in a particular group of organisms and are not present in their ancestors. These traits are usually more complex in structure and function, and are specific to the group of organisms that possess them.
The main difference between ancestral and derived traits is that ancestral traits are inherited from a common ancestor, while derived traits have evolved in a particular group of organisms. Ancestral traits are found in many different groups of organisms, while derived traits are unique to particular groups of organisms.
Zero level channel of distribution is also
called as
OA. direct marketing
OB. multilevel marketing
OC. two level marketing
O D. micro level marketing
Answers
Zero level channel of distribution is also called as direct marketing and is therefore denoted as option A.
What is Marketing?This is referred to as the activity or business of promoting and selling products or services an dis usually done so as to increase the sales and profit needed to keep the organization afloat.
On the other hand, Zero level channel of distribution is also known as direct marketing and it includes an organization directly selling its products to the customers without a middle man such as the wholesalers or retailers and is therefore the reason why it was chosen as the correct choice.
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A sample of milk is tested for its bacterial content in a plate count assay. A one-milliliter sample of the milk is diluted in a 1:10 dilution series. One milliliter of the third dilution tube is plated in a pour plate. After incubation, the plate has 54 colonies, indicating that the original milk sample contained how many CFU/ml?
Answers
After incubation, the plate has 54 colonies, indicating that the original Milk sample contained 540,000 CFU/ml.
The equation for calculating the CFU/mL in the original sample is:
CFU/mL = (number of colonies on plate x dilution factor) / volume of the culture plated
Here,
Number of colonies on plate = 54
Volume of the culture plated = 1 mL
The original sample is serially diluted in a proportion of 1:10, that is 1/10
So the dilution of first tube = 1/10
From the first tube, the culture in again diluted in a proportion of 1:10
So, Dilution of second tube = 1/10
The total dilution of tube 2 will be the product of the dilution of tube 1 and tube 2.
So, total dilution of tube 2 = 1/10 x 1/10 = 1/100
Similarly, the total dilution of tube 3 will be 1/1000 and tube 4 will be 1/10000
The sample is plated from tube 4, and therefore the total dilution of tube 4 is used for the calculation of bacterial concentration.
Dilution factor = Reciprocal of dilution
So, dilution factor of tube 4 = 10000 = 104
Substitute the values in the equation:
CFU/mL = ( 54 x 104) / 1 = 54 x 104 = 540000 cells/mL
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Which statement best explains why this extrusive volcanic rock does not have visible crystals?
A. It is homogeneous and composed of a soft mineral.
B. It does not contain atoms of any Earth minerals.
C. It cooled down before large crystals could form.
D. It wasn’t exposed to friction during its formation.
Answers
Answer:
C it cooled before it could harden
How do cnidarians in the medusa formmove through the water?A. the gastrovascular cavity fills with water and allowsthem to floatB. their tentacles spin causing a propeller motionC. the tentacles move along the ocean floor like feetD. water is brought into the gastrovascular cavity andthen expelled which propels them forward
Answers
The medusas (cnidarians) is a free-swimming form organism, that is able to move through the water by rhythmic muscular constractions of the bell part (jet propulsion) of their body. Therefore, the correct alternative is the one that says: D. water is brought into the gastrovascular cavity and then expe
Which type of replication error would be most likely to result in gene
variation among organisms?
Answers
When females go through meiosis to create gametes it is very different than males. Explain what happens
during oogenesis, be sure to include polar bodies in your explanation.
Answers
Oogenesis results in the production of one functional egg and several polar bodies that are eventually discarded, ensuring the preservation of cytoplasmic resources in the egg for successful fertilization and early embryonic development.
During oogenesis, the process of producing female gametes or eggs, the primary difference compared to males is the uneven division of cytoplasm. In humans, oogenesis begins during fetal development and continues throughout a woman's reproductive life.
In the ovary, oogonia (diploid cells) undergo mitosis to increase their number. One of the resulting cells becomes the primary oocyte, which enters meiosis I but pauses in prophase I until puberty. Each month after puberty, one primary oocyte resumes meiosis I and divides asymmetrically. The division produces a secondary oocyte and a small polar body, which contains a minimal amount of cytoplasm. The secondary oocyte then enters meiosis II but pauses again in metaphase II.
If fertilization occurs, the secondary oocyte completes meiosis II, yielding a mature egg (ovum) and another polar body. The mature egg contains the bulk of the cytoplasm and organelles necessary for embryonic development. The polar bodies, though non-functional, ensure that the cytoplasm is concentrated in the egg and help preserve the genetic material.
Overall, oogenesis results in the production of one functional egg and several polar bodies that are eventually discarded, ensuring the preservation of cytoplasmic resources in the egg for successful fertilization and early embryonic development.
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produces hydronium ions
a) acids
b)base
c) both
Answers
Answer:
A: Acid
Explanation:
None
Answer: the answer is Acids
Explanation:
An acid is a compound that dissolves in water to make a particular kind of solution, and hydronium ions can be formed when an acid is present in water or simply in pure water
What do the polar bears, reindeer, and shrubs that live in a single area make up?
organism
population
community
ecosystem
Answers
Answer:
population
Explanation:
The polar bears, reindeer, and shrubs that live in a single area make up a community. The correct option is C, a community.
What is a community?
In ecology, a community refers to a group of different species that coexist and interact within a particular area or habitat.It represents the interconnected network of species that inhabit a particular area.It includes all the living organisms, such as plants, animals, and microorganisms, that inhabit a specific ecosystem.The structure and composition of a community can be influenced by factors such as resource availability, environmental conditions, and species interactions.The polar bears, reindeer, and shrubs are distinct species that share the same geographical area and have the potential to interact with one another. They form a community within that ecosystem. It is important to note that a community does not include abiotic factors, such as soil, water, and climate, which collectively form an ecosystem.
So, the correct option is C.
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Compare and contrast passive and active immunity, covering at least 4 functions, components, or mechanisms related to immune response. Include at least 1 way in which they are similar and 1 way in which they are different.
Answers
Active immunity develops as a result of the body's own generation of antibodies, whereas passive immunity is a result of antibodies created outside the body and then brought into the body.
Which of the following best describes the differences between active and passive immunity?Both active and passive immunity exists. When our immune system actively defends us against a pathogen, we are said to have active immunity. When we receive immunity from another person, we are able to defend ourselves against a virus. This is a key distinction between the two types of immunity.
For instance, an infant acquires passive immunity when a mother's antibodies are transferred to her through the placenta or breast milk. Getting an injection of antibodies to fend against the effects of a toxin like a snake venom can also cause it.
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what is a selectable marker?????
Answers
This is the answer that i know !
Hope it helps , stay home stay safe dear !!
Why Is Water Wet ?
Answer me fast
Answers
Gregor Mendel crossed true-breeding plants with yellow seeds (YY) and true-breeding plants with green seeds (yy) to determine what this cross would produce. What is the independent variable in Mendel's experiment?
Question 12 options:
How many tall plants resulted from Mendel's cross
How many yellow plants resulted from Mendel's cross
Color of seeds Mendel chose to cross
Height of plants Mendel chose to cross
Answers
Answer:
Color of seeds Mendel chose to cross
Explanation:
This variable does not depend on the other variables you are trying to measure, so it is independent.
In Gregor Mendel cross, the variable does not depend on the other variables you are trying to measure, so it is independent.
What is Gregor Mendel cross?Mendelian Crosses: In one of his experiments on inheritance patterns, Mendel crossed plants that were true-breeding for violet flower color with plants true-breeding for white flower color (the P generation).
Mendel first experimented with just one characteristic of a pea plant at a time. He began with flower color and cross-pollinated purple- and white-flowered parent plants. He was surprised by the results. This led to his law of segregation.
A dihybrid cross is a breeding experiment between two organisms which are identical hybrids for two traits. In other words, a dihybrid cross is a cross between two organisms, with both being heterozygous for two different traits.
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Which of the following is not an argument in favor of aquaculture?
A. Competition with fishermen
B. Reduction in seafood trade deficit
C. Job creation
D. Revenue generation
Answers
Answer: A. Competition with fisherman
Explanation:
I just took this test and also process of elimination its the only one that makes sense. :)
Answer:
Its A.
Explanation:
just took the test
what usually accompanies a cold spell in minnesota?
Answers
Platelets are fragments of larger cells and normally circulate in the blood without adhering to blood vessel walls. When the wall of a blood vessel is damaged, collagen fibers in the wall are exposed to the interior of the blood vessel. The exposed fibers and chemicals released from the endothelial cells that line the blood vessel attract platelets, which start to form a plug and release other chemicals (Figure 1).
Which of the following best explains the feedback mechanism illustrated in Figure 1?
a. This is an example of positive feedback, because the few platelets that initially bind attract more platelets to the damaged area.
b. This is an example of positive feedback, because it results from the interactions among collagen, endothelial cells, and platelets.
c. This is an example of negative feedback, because a large clump of platelets can block the blood vessel and prevent blood flow through it.
d. This is an example of negative feedback, because the accumulation of platelets returns the open blood vessel wall to a closed state.a. This is an example of positive feedback, because the few platelets that initially bind attract more platelets to the damaged area.
Answers
Collagen fibers in the blood vessel's wall are made visible to the interior when the blood vessel's wall is damaged. The blood vessel's endothelial cells' exposed fibers and chemicals draw platelets, which begin to form a plug and release additional chemicals.
The majority of the arteries, veins, and capillaries in the brain, skin, lung, heart, and muscle are made of continuous endothelium. Tight connections hold endothelial cells together and keep them attached to a continuous basal membrane. The endothelium is an essential metabolizing and endocrine organ that plays a significant role in the regulation of immunology, inflammation, and angiogenesis, as well as the control of blood fluidity, platelet aggregation, and vascular tone. The inner surface of blood vessels is covered by endothelial cells, whereas the outer surface of internal organs and the body is covered by epithelial cells. Despite deriving from the epithelium, endothelial cells and epithelial cells function, position, and structure differently.
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which statement below best describes why diabetics are two times more likely to develop cardiovascular disease than non-diabetics?
Answers
Atherosclerosis results from high cholesterol levels brought on by diabetes.
What shade of urine do individuals who have diabetes produce?When excessive sugar accumulates in the urine, diabetes can result in murky urine. Furthermore, your urine may smell pleasant or fruity. Insulin can also cause kidney problems or raise the likelihood of urinary tract infections, both of which can cause murky urine.
What causes disease primarily?Even though not all people with type 2 diabetes are overweight, obesity and a poor diet are two of the most typical risk factors. About 90% to 95% of diabetes cases in the US are caused by these factors.
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Based on these numbers, how many Calories come from fat and does this food meet Cecilia’s requirement?
Answers
Based on the table, there are 108 calories from fat so this does not meet Cecelia's requirement (option B).
What are fat calorie requirements?Fat calorie requirements makes reference all calories provided by fats on a daily basis. Fats are a fundamental macronutrient that must be consumed in the diet because there are many vitamins that only we can absorb in the presence of fats (liposoluble vitamins).
Therefore, with this data, we can see that calories from fats must be approximately 20 percent of the total of ingested calories on a daily basis.
Complete question:
Cecilia is looking at a nutrition label on a package of macaroni and cheese. She is trying to eat foods that have less than 25% of the total calories from fat. She knows that 1 gram of fat provides 9 Calories. The label shows this information: Total Calories per Serving 400, Total grams of fat 12g
Based on these numbers, how many Calories come from fat and does this food meet Cecilia's requirement?
There are 48 Calories from fat, so this does not meet Cecilia's requirement.
There are 108 Calories from fat, so this does not meet Cecilia's requirement.
There are 48 Calories from fat, so this does meet Cecilia's requirement.
There are 108 Calories from fat, so this does meet Cecilia's requirement.
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Suppose the individuals making up a population of tree frogs came in a
variety of colors.
How does this type of diversity most likely affect the tree frog population?
A. The frogs exhibiting different colors must compete fiercely with
one another for resources.
B. This type of diversity means that fewer individuals will survive if
the environment changes.
C. The colors help the frogs recognize and communicate with one
another
D. The frogs are well adapted to different niches, minimizing
competition
Answers
Answer:
C. The colors help the frogs recognize and communicate with one
another.
Explanation:
The unique colors found on the the tree frogs are a form of structural adaptation. Adaptation requires to those features of a plant or animal that helps it survive better in its environment. There are behavioral and structural adaptations. The varieties of colors on the tree frogs are a form of structural adaptation.
Colors can serve as camouflage or a method of recognition and communication. Since the frogs have different colors, they will be able to differentiate themselves.
Answer:A
Explanation:
it’s right
BIOL 101
War on Cancer - 10 Discoveries
Malignant brain tumors in adults are fast-growing cancers with median survival rates of 15
months, even with aggressive treatment. Researchers have been searching for genetic
"signatures" (characteristic groups of cancer-causing genes) that could help in defining the
kind of brain tumor the patient has. They hope to be better able to predict the course of the
disease and more accurately design the patient's course of treatment.
Does this lead to a) reduction of cancer risks b) correction of cancer genes c) destruction of
cancerous tissue
Answers
The research described in the given statement does not directly lead to a) reduction of cancer risks, b) correction of cancer genes, or c) destruction of cancerous tissue.
What does the research lead to?Instead, it focuses on identifying genetic signatures that could help in defining the type of brain tumor a patient has. The primary goal is to improve prediction of disease progression and design more accurate treatment plans for patients with malignant brain tumors.
This research contributes to better understanding and management of the disease, but it does not directly address the reduction of cancer risks, correction of cancer genes, or destruction of cancerous tissue.
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GIVING BRAINLIEST..
1.Scientists have evidence that the universe is [expanding/shrinking].
2.Objects moving away from Earth appear [blue/red], and objects moving toward Earth appear [blue/red].
3.Light from most other galaxies appears [blue/red], which makes sense if the universe is [collapsing inward/spreading out]
Answers
Answer:
(1) expanding
(2) red, blue
(3) red, spreading out
hope it helps you
Write a three (3) paragragh response to this: "A realistic mutation that would greatly benefit the human
race would be..."
Describe the mutation or change and tell how it could happen and why it would be beneficial. The mutation must
be realistic and your response should be detailed, giving examples of the change(s) and whether it would all be
positive or if there could be negative situations, as well.
Answers
A potential realistic mutation that could greatly benefit the human race is an increased resistance to infectious diseases.
Realistic human mutationOne potential realistic mutation that could greatly benefit the human race is an increased resistance to infectious diseases. Such a mutation could occur through various mechanisms, including natural selection, genetic engineering, or epigenetic modifications.
This mutation would be beneficial because it would improve the health and well-being of individuals, reduce healthcare costs, and potentially prevent pandemics and global health crises. For example, a mutation that enhances the activity of immune cells or increases the expression of antimicrobial peptides could help individuals fight off infections more effectively and reduce the likelihood of spreading infectious diseases to others.
However, it is important to note that there could be potential negative consequences associated with this mutation. For instance, increased resistance to infectious diseases could lead to a reduction in the diversity of the human microbiome, which could have implications for overall health and immune function.
Additionally, it is possible that infectious agents could evolve in response to this mutation, potentially leading to the emergence of new and more virulent strains of pathogens. Therefore, it is important to consider the potential risks and benefits of any mutation carefully and to approach genetic engineering with caution.
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In which ways might ocean currents be like streams and rivers on land?