Answers
Answer:
The study reported here presents a comparative screening of three medicinal plants including oregano (Origanum vulgare L.), lavender (Lavandula angustifolia) and lemon balm (Melissa officinalis) having the same geographical origin, the Southeast region of Romania, and growing in the same natural conditions. The contents of total phenolics and total flavonoids for the extracts of these were determined. Furthermore, the total antioxidant capacity was also evaluated. It was found that Origanum vulgare and Melissa officinalis extracts present the most effective antioxidant capacity in scavenging DPPH radicals, while Lavandula angustifolia is less active. High performance liquid chromatography-mass spectrometry analysis was used to identify the components of extracts. Major phenolic acids identified in the analysed species were ferulic, rosmarinic, p-coumaric and caffeic, while predominant flavonoids were quercetin, apigenin kaempherol, which were present as glucosides.
Explanation:
Related Questions
How does a population experience variation in traits?
A. through mutations and genetic recombination
B.through the introduction of an invasive species
C. through a decreased death rate
D.through an increased birth rate
Answers
Answer:
I'll say A, through mutations and genetic recombination.
Select the statements that accurately describe fossil evidence for the relationship between the Hyracotherium and the modern horse.
A)The fossil record demonstrates that the modern horse has been on Earth, in its current state, for millions of years.
B)The fossil record is incomplete and provides no link between the Hyracotherium and the modern horse.
C)The fossil record provides evidence that the Hyracotherium was a hooved herbivore. The modern horse shares this characteristic.
D)The fossil record contains links, or common ancestors, connecting the the Hyracotherium and the modern horse.
Answers
Answer:
D
Explanation:
because the fossil show that hyracotherium is a simple form of marden horse
44. Recombinant DNA is a newly generated DNA molecule containing DNA regionsfromA. different sources.B. RNA.C. only one source.
Answers
The answer is the letter A. Different sources
*Recombinant DNA is DNA molecules that came from two different species. These DNA molecules are inserted into a host organism producing new genetic combinations.
Prokaryotes and eukaryote cells have DNA, the genetic material. True or False ?
Answers
Answer:
False
Explanation:
False!! Prokaryotic cells have genetic information (as well as cytoplasm and a cell membrane); prokaryotic cells DO NOT HAVE A NUCLEUS!!! Pro means "NO"!! ... Cells that have a nucleus are called EUKARYOTIC.
Que es la conducción en ciencias?
Answers
si hay conducta beacuse there is life and life is science
The star in the diagram represents which of these? A. origin of replication B. replication fork C. replication bubble D. Okazaki fragment
Answers
Given what we know about the process of DNA replication, we can confirm that the star shown in the diagram represents the replication fork.
During the replication of DNA in the cellular process of multiplication, a structure known as the replication fork is formed. This fork is a structure that forms by helicases, which tear the hydrogen bonds that hold together two DNA strands in the form of a double helix.
The resulting structure contains two prongs, which are branches of the original DNA strand which are no longer doble or in the form of a helix. This area where the strands are separating into prongs is the replication fork which is being marked in the diagram by the star.
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The hyphae stretch into the growth medium and release enzymes (e.g.______________________) to break down molecules in the environment and absorb nutrients.
Answers
Answer:
See the answer below
Explanation:
The hyphae stretch into the growth medium and release enzymes (e.g. protease) to break down molecules in the environment and absorb nutrients.
The hyphae of fungi generally strech into the media on which they grow and release enzymes to break down molecules in the media environment and absorb digested substances containing nutrients. The enzyme released depends on the nature of molecules found in the media. Proteolytic (e.g protease), glycolytic, or lipolytic enzymes are released to digest protein, carbohydrate, or lipid respectively.
An organism has a total of 32 chromosomes. What is the organism's diploid number? ______ Haploid number ______
Answers
Answer:
16 hap rest
Explanation:
In a large population of randomly breeding individuals, the frequency of a recessive allele is initially 0.3. There is no migration and no selection. Humans enter this ecosystem and selectively hunt individuals showing the dominant trait. When the gene frequency is reexamined at the end of the year, __________. chapter 13 mastering biology
Answers
Answer:
The correct answer is "the frequency of the homozygous dominants will go down, the frequency of the heterozygous genotype will go down, and the frequency of the homozygous recessives will go up".
Explanation:
In this example, an stable population with a frequency of recessive allele of 0.3 is disturbed by humans entering the ecosystem, which selectively hunt individuals showing the dominant trait. In consequence, the individuals with the dominant trait will have lesser chances of survival and reproduction, resulting in the frequency of homozygous dominants going down, as well as the heterozygous genotype since they exhibit the dominant trait too. On the other hand, the individuals showing the recessive trait will have better chances of survival and reproduction, resulting in an increase of the frequency of the homozygous recessives.
Which provides long term energy storage
Answers
Answer:
The answer is Glycogen!
Explanation:
Glycogen is an example of a carbohydrate which is a polyacrylamide that acts as a long-term energy storage compound in animals.
Please help me with this Science question
1. Plastic pollution could affect how
oxygen is produced on Earth, True or False?
Answers
Which one of these statements is true regarding blood circulation?
a.
For health and survival, it's critical for blood circulation to be ongoing and uninterrupted.
b.
Normally, blood circulates in a repeating stop-start rhythm.
c.
The heart deoxygenates blood that's returned to it.
d.
Taking in large quantities of oxygen makes the circulatory system les efficient.
Answers
Answer:
It is A!
Explanation:
For health and survival, it's critical for blood circulation to be ongoing and uninterrupted.
Classify the following liquids as hypotonic, isotonic or hypertonic compared to our cells.
10% NaCl solution
Answers
The solution "10% NaCl" will be "hypertonic". A complete description is provided in the below segment.
Every solution with such an osmotic concentration or potential greater than whatever comparable solutions, would be determined as "Hypertonic".
10% NaCl solutions imply 10 grams of decomposed sodium chloride throughout the 100 ml of solution.10% remedy, therefore, contains more NaCl solution; additional particles of NaCl have a workable solution, and we already declare 10% extra osmolar than 5% NaCl aqueous solution.Thus the answer above is right.
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What organ systems and organs, tissues, or cells work together in the process of running? and how do they work together? It is for grade 6
Answers
The process of running have many systems of the body involved to do the exercise, being the three main ones the muscular system (related to moving the body running), circulatory system (circulation of the body and disbridution of oxygen and others molecules importants to maintain the body while running), and respiratory system (breathing), there is also the nervous system and skeletal during the exercise. They work together because the nervous system receive the stimulus, making the respiratory, muscular, skeletal and circulatory systems put more force for increase oxygen uptake, increase in speed the gas exchange in muscle tissues, and direct the energy for the muscles that are in activity.
How are photosynthesis and cellular respiration related?
O A. Cellular respiration is the process animals use to produce glucose,
while photosynthesis is the process plants use to produce
glucose.
B. Cellular respiration provides the energy for photosynthesis.
OC. Photosynthesis produces water molecules, while cellular
respiration splits water molecules apart.
D. The products of photosynthesis are the reactants of cellular
respiration.
Answers
Answer:
D
Explanation:
Edge biology
A student completed a lab report. Which correctly describes the difference between the “Question” and “Hypothesis” sections of her report?
A: “Question” states what she is asking, and “Hypothesis” states the result of her experiment.
B:“Question” states what she is asking, and “Hypothesis” states what she thinks the answer to that question is in “if . . . then . . . because” format.
C: “Question” describes what she is trying to find out, and "Hypothesis" states the procedures and methods of data collection.
D: “Question” describes what she is trying to find out, and “Hypothesis” states any additional information or prior knowledge about the question.
Need it asap no rocky
Answers
According to the scientific methodology, researchers must make themselves a question and then propose a hypothesis. B:“Question” states what she is asking, and “Hypothesis” states what she thinks the answer to that question is in “if . . . then . . . because” format.
What are the question and the hypothesis?
When following the scientific methodology researchers must formulate a question and a hypothesis.
The question is what the researcher wants to know. It is triggered when making an observation for which there is no explication yet. The researcher wants to know what is causing a certain event and how or why it is occurring.
A hypothesis is a scientific conjecture, not verified, that requires corroboration. It is a possibility, not a fact. It is a claim of how it works a relationship between two or more variables.
The researcher hypothesizes to predict what is going on or what is expected to occur.
Option B:“Question” states what she is asking, and “Hypothesis” states what she thinks the answer to that question is in “if . . . then . . . because” format.
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Life on Earth likely evolved from a common ancestor that existed approximately 3.5 billion years ago. Which of these is evidence that all life on Earth shares common features? Select ALL that apply.
Responses
A All life on Earth has DNA as the molecule of heredity.All life on Earth has DNA as the molecule of heredity.
B All life on Earth is made up of cells with a rigid cell wall.All life on Earth is made up of cells with a rigid cell wall.
C All life on Earth performs transcription and translation in a similar fashion.All life on Earth performs transcription and translation in a similar fashion.
D All life on Earth contains mitochondria for cellular energy.All life on Earth contains mitochondria for cellular energy.
E All life on Earth has cells surrounded by membranes.
Answers
the evidence that all life on Earth shares common features is that All life on Earth performs transcription and translation in a similar fashion. and All life on Earth has cells surrounded by membranes.
What is transcription and translation?
The process of transcribing a piece of DNA into RNA is known as transcription. Messenger RNA is created when segments of DNA are translated into RNA molecules that can encode proteins. Translation is the process by which ribosomes in the cytoplasm or endoplasmic reticulum create proteins following the transcription of DNA to RNA in the cell's nucleus. The entire process is known as gene expression.
What is cell membrane?
The cell membrane, also known as the plasma membrane, is found in all cells and serves to separate the cell's interior from the outside environment. The cell membrane is made up of a semipermeable lipid bilayer. The cell membrane controls the transport of materials into and out of the cell.
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She is puzzled that the clone does not have an effect, even though she knows, based on available mutants, that loss of the function of this gene causes worms to die as larvae. You look at the sequence of the DNA she used to make the feeding clone and discover that it corresponds to an intron in the gene. What would you say to the student to explain why her experiment did not succeed
Answers
Hello. Your question is incomplete, which makes it difficult to answer, but we can consider that the girl's experiment went wrong because she used a DNA sequence that only corresponds to introns that are not capable of encoding amino acids. Therefore, you could explain to the girl that her experiment did not work, because the introns do not encode amino acids, which prevents the clones from developing proteins that are essential for their survival, since the amino acids are the protein-building molecules .
Introns are important for the control of gene expression, but they cannot encode any amino acid, without which the organism cannot survive.
What gives the eye its shape?
Answers
Explanation:
The vitreous body forms two thirds of the eye's volume and gives the eye its shape.
8. What is the broadest level of the Linnaean classification system?
order
family
species
kingdom
Answers
Answer:
kingdom
Explanation:
Which characteristics are used to differentiate among the six kingdoms?
Answers
Plants exchange carbon dioxide, water, and oxygen with their surrounding environment through openings in their called O A. leaves, stomata B. stems, sori OC leaves, xylem D. roots, guard cells
Answers
GIVING 99999999999999 PTS AFTER U ANSWER IT MUST BE CORRECT A stalled front (not moving) that may bring many days of clouds and precipitation is a(n)____________.
Question 1 options:
cold front
warm front
occluded front
stationary front
Question 2 (1 point)
Saved
An air mass, shown in the image above, that forms over parts of Mexico, Texas, and Arizona will be a _______.
Question 2 options:
continental polar air mass
continental tropical air mass
maritime polar air mass
maritime tropical air mass
Question 3 (1 point)
Saved
Prevailing westerlies are global winds responsible for most weather in our region of the United States moving from west to east.
Question 3 options:
True
False
Question 4 (1 point)
What causes a land breeze at the beach?
Question 4 options:
At night, cooler air over land replaces rising warmer air over water.
At night cooler air over water replaces rising warmer air over land.
During the day, cooler air over land forces warmer air over water to rise.
Question 5 (1 point)
Based on the weather map above, which statement is true based on the weather map?
Question 5 options:
A warm front is moving toward South Carolina.
A warm front just passed through South Carolina.
It is currently raining in South Carolina.
The next few days in South Carolina should be colder.
Question 6 (1 point)
Saved
Which type of local wind is illustrated in the image above?
Question 6 options:
Global wind
warm wind
land breeze
sea breeze
Answers
Answers:
1) Stationary front
2) Continental tropical air mass
3) True
4) At night cooler air over water replaces rising warmer air over land.
5) There is no weather map visible.
6) There is no image visible.
the gametes of one individual were heterozygous?
Answers
A heterozygous individual has two different alleles for a given trait or character, therefore can produce 2n gametes.
What is a heterozygous gamete?A person who possesses two distinct alleles of a gene is said to be heterozygous for that gene.
Each of the two alleles that this person possesses for that gene will be distributed randomly among the gametes that are produced when this person reproduces. In other words, one allele will be present in half of the person's gametes, while the other allele will be present in the other half.
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Complete question;
How many different gametes are produced by an individual who is heterozygous?
What kingdom can live in harsh environments, like extremely hot or cold environments. *
Answers
Answer:
Archaea
Archaea is the main group to thrive in extreme environments.
Explanation:
the genes assort independently.
short, black fur long, black fur short, brown fur long, brown fur
Answers
Answer: All answer choices. Short, black fur.. long, black fur.. short, brown fur & long, brown fur
Explanation:
Answer:
Two true-breeding guinea pigs were crossed. One had short, black fur, and the other had long, brown fur. Fur length is carried on one gene and fur color on another. Select all offspring phenotypes that you would expect in later generations if…
. . . the genes are nearby on the same chromosome.
short, black fur
long, black fur
short, brown fur
long, brown fur
A short-haired black guinea pig and a long-haired brown guinea pig.
Photos by Katrina and Ilovebutter
. . . the genes assort independently.
short, black fur
long, black fur
short, brown fur
long, brown fur
Explanation:
Which sentence describes a difference between plant cells and animal cells?
A. Plant cells cannot reproduce because they have cell walls, while animals cells are able to reproduce.
B. Plant cells take in food from their environment, while animal cells produce food inside themselves.y
C. Plant cells contain organelles for structure and photosynthesis, which are not found in animal cells.
D. Plant cells contain no nucleus or complex organelles, while animal cells do.
Answers
Answer: a
Explanation:
SOMEONE PLEASE HELP ME!!!! It has been claimed that different mechanisms exist that regulate the timing and coordination of behaviors in animals and plants.
a.) Justify the claim by describing an example of a behavioral event in animals that occurs in response to a 24-hour light/dark cycle. (2 points))
b.) Justify the claim by describing an example of a behavioral event in plants that occurs in response to a seasonal cycle. (2 points)
Answers
a) An example of a behavioral event in animals that occurs in response to a 24-hour light/dark cycle is the circadian rhythm.
Circadian rhythms are internal biological processes that repeat approximately every 24 hours and are synchronized with the light/dark cycle of a day.
These rhythms regulate various physiological and behavioral processes in animals, including sleep-wake cycles, hormone secretion, body temperature, and activity levels.
b) An example of a behavioral event in plants that occurs in response to a seasonal cycle is flowering.
Many plant species exhibit a phenomenon called photoperiodism, where their flowering is influenced by the duration of daylight and darkness in a day.
This response allows plants to time their reproductive phase to favorable seasons for pollination, resource availability, and seed production.
Thus, these examples illustrate how different mechanisms in animals and plants regulate behaviors in response to specific environmental cycles.
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NEED ANSWERED ASAP WORTH 30 POINTS
“Activity levels at the end of adolescence are
alarmingly low, and by age 19, they are
comparable to 60-year-olds," says a study
conducted by senior author, Vadim
Zipunnikov, assistant professor in the
Bloomberg School's Department of
Biostatistics. "For school-age children, the
primary window for activity was the afternoon
between two and six P.M. So the big question
is how do we modify daily schedules, in
schools for example, to be more conducive to
increasing physical activity?"
PLEASE ANSWER SOON WORTH 30 POINTS AND PLEASE ANSWER CORRECTLY THIS IS IMPORTANT. THANK YOUUU
Answers
Activity levels decline sharply in late adolescence, equivalent to 60-year-olds. To boost physical activity, we must adapt school schedules to prioritize the afternoon window of 2-6 P.M.
According to a study conducted by Vadim Zipunnikov, the activity levels of individuals at the end of adolescence are shockingly low, comparable to those of 60-year-olds. The study found that the primary window for activity among school-age children was the afternoon, specifically between two and six P.M. This raises an important question: How can we modify daily schedules, particularly in schools, to promote increased physical activity? By addressing this challenge, schools can create an environment that encourages and facilitates physical activity among students. Possible solutions could include incorporating more physical education classes, recess breaks, or after-school sports programs during this crucial time window.By making these changes, we can foster healthier habits and ensure that young people have ample opportunities to engage in physical activities, improving their overall well-being.For more such questions on Activity levels:
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Glycogen, amino acids, cholesterol, and fat-soluble vitamins are
stored in the
Answers
Answer: Muscles
Explanation: the body transforms carbohydrates into glycogen that is in tun stored in the muscles for energy