Answer:The property which is not characteristic of enzymes is to be predicted. Concept Introduction: Enzymes are proteins. ... The important factors affecting enzyme activity are enzyme concentration, substrate concentration, temperature and pH.
Explanation: above is the explanation
How are mitosis and meiosis similar?
Answer:
Explanation:
They both make new cells from preexisting/other cells
You decide to perform a chromatin immunoprecipitation to see whether your favorite gene, the Cool gene, is associated with H3 histones that are methylated at lysine 9 (on the histone tail).
You then want to determine whether this methylation also means that expression of the Cool gene is inhibited in cells.
1. Which of the following techniques will allow you to answer this question?
O Northern blot
O DNA footprinting
O Yeast 2 Hybrid
O Quantitative RT-PCR
O Microaray
O Hybridization
Answer:
Quantitative RT-PCR
Explanation:
Reverse transcription polymerase chain reaction (RT-PCR), also known as quantitative Real-Time (RT) PCR, is a technique widely used in molecular biology laboratories in order to assess the expression level of target genes. This technique employs a transcriptase inverse that enables to obtain DNA from total RNA and then this total DNA is amplified as in a Polymerase Chain Reaction. The levels of the target genes are obtained by comparing their relative expression with one or more control genes.
Research and identify a vestigial structure of an organism of your choosing.
Why does the organism not need that structure anymore? (Think about what the structure's original purpose was.)
Answer:
The one of best example would be appendix in humans.
Explanation:
In the past, the appendix may have helped in the digestion of the plants by producing mucus and prevent any type of infection. Plants with a high content of cellulose are digested with the help of the appendix as reported.
It is not a part of the human digestive system and considers as a vestigial organ. Vestigial organs are the organs that are present in an organism with no particular function and their removal will not lead to any harm. Humans do not need it because our digestive system is more efficient and works better in the first stages of digestion than they used to.
Thus, the correct answer is - appendix in humans.
A lethargic 22-month old black female was presented by her mother to the emergency room at 2:15 am on a Sunday. The child had a history of a runny nose, hoarse cough and low-grade fever (~99F) for the past 48 hours. The mother was concerned about the forced and noisy breathing of the child. The pediatrician examined the child and found cloudy eyes and mild inflammation of the ears, but no overt signs of bacterial infection (no significant changes in the eardrums). The throat of the child was red and coated with mucus. The larynx was swollen and raw.
The physician performed a rapid Strep Test*, and found it was negative. Throat swabs were taken for culture. The physician placed the child in a room with a warm vaponzer for about 30 minutes. This dramatically improved the breathing of the child.
rapid Strep test* is used in the diagnosis of bacterial pharyngitis caused by group A streptococci (GAS), sometimes termed strep throat.
Questions:
1. What is the presumptive diagnosis for this case?
2. Will the throat cultures likely show evidence of Streptococcus pyogenes? How about Staphylococcus aureus?
3. Do you believe that this is a bacterial or viral disease? Why?
4. What further treatment might be indicated for this case?
Answer:
it is adenoviral pharyngitis, croup
No, due to the fact that the the Strep test was negative and the overall picture indicates a viral infection
it is a viral disease; this viral disease is characterized by little or no pus on pharynx, a good response to warm vapor to clear congestion
further treatment that is needed in this case is a more vapor treatment, decongestant, and analgesic; antibiotics should be reserved unless Strep of Hib shows on culture.
Explanation:
adenoviral pharyngitis,symptoms are usually, cough, fever, cough, sore throat e.t.c..
croup, known as laryngotracheobronchitis also is a viral respiratory infection which causes swelling inside the trachea, that hinders normal breathing process and symptoms include cough, stridor, and a hoarse voice.
In Florida, soapberry bugs have historically fed upon balloon vine fruits, which produce large fruits. Soapberry bugs that feed on these fruits have relatively long mouthparts. After the goldenrain tree was introduced as an ornamental plant in Florida, some populations of soapberry bugs became specialists and ate only goldenrain tree fruits, which produce small fruits. These specialized soapberry bug populations, on average, have shorter mouthparts than the populations that feed on balloon vine fruits. If a population of soapberry bugs from a balloon vine were experimentally moved to a goldenrain tree, what would you expect to happen over time?In your answer, include definitions of natural selection and evolution in your own words.
Answer:
It is expected that the introduced population decreases because they have a minor adaptive response to survive in this new environment in comparison to its competence (i.e., specialized populations of soapberry bugs).
Explanation:
Natural selection is represented by the evolutionary processes that will select for survival to those individuals with higher adaptive fitness, which in this case is represented by the ability to obtain resources (food). In concequence, and according to the evolution theory, these introduced individuals will have less chances to reproduce in order to perpetuate their genes in the next generation.
Why do you think the snapper population changed the way it did?
Answer:
Snapper population is decreasing
Explanation:
The population is decreasing since the human population is increasing dramatically. As the human population increases, the demand for fish and seafood also increases since humans eat seafood and fish. As the demand for fish increases, fishermen fish for these snappers more often and in bigger loads. Snappers cant reproduce faster than these fishermen are hunting for them and so the population decreases
help me with this _XX
Answer:
B. Hardness
Explanation:
Physical properties of a substance is defined as the properties which can be observed or measured without changing the composition of matter.
Physical properties include odor, appearance, color, texture, boiling point, melting point and many others.
Hardness is a physical property of a substance as it describes the resistance of substance to deformation and can be observed by simple touch or without changing the composition of matter.
While reactivity, toxicity and flammability are chemical properties of substances that change one type of matter into another type.
Hence, the correct option is B.
What is heat?
-
-
- please answer
does the amount of bacteria change After conjugation?
Answer: yea it does
Explanation:
conjugation (prokaryotes) Conjugation is the process by which one bacterium transfers genetic material to another through direct contact. During conjugation, one bacterium serves as the donor of the genetic material, and the other serves as the recipient.
g A team of researchers suspects that RegX may play a role in regulating cytoskeletal reorganization by activating KinY. To test whether these two proteins can interact, they conducted two variations of the following experiment: 1) Transform mouse cells with expression plasmids encoding the proteins of interest. 2) Express proteins of interest inside cells. 3) Lyse cells 4) Conduct a Co-IP on the cell lysate against GST or GST-tagged KinY (depending on the specific experiment). 5) Run western blots to see which proteins are present in the immunoprecipitates. The results _________________________________________.
Answer:
It is expected to observe the immunoprecipitation of the GST-tagged KinY complex, thereby indicating the role of RegX in the mechanism of cytoskeletal reorganization.
Expanation:
Western blot is a technique widely used in molecular biology laboratories in order to identify proteins and also to quantify their expression levels. This technique is useful to detect proteins with high specificity, in this case the technique has been used for the detection of an immunoprecipitated (i.e., GST-tagged KinY complex) in order to confirm the role of the upstream protein RegX in cytoskeletal organization.
What would a temperature of 25 degrees Fahrenheit be in Celsius?
Answer:
9° in celsius
Explanation:
It will not increase
What are the benefits of geothermal and oil-and-gas forms joining forces?
Explanation:
Geothermal energy is generally considered environmentally friendly and does not cause significant amounts of pollution.
Geothermal reservoirs are naturally replenished and therefore renewable (it is not possible to exhaust the resources).
Massive potential – upper estimates show a worldwide potential of 2 terawatts (TW).
Excellent for meeting the base load energy demand (as opposed to other renewables such as wind and solar).
Great for heating and cooling – even small households can benefit.
Harnessing geothermal energy does not involve any fuels, which means less cost fluctuations and stable electricity prices.
Small footprint on land – can be built partially underground.
The geothermal sources of energy along with oil and gas are an additional source of energy and these sources help to meet the increasing demands of energy with reduced emissions.
What is geothermal energy?The heat generated within the earth is termed geothermal energy. The geothermal source is a renewable energy source. These sources include hot springs, hydrothermal vents, steam vents, and geysers. The heat from these sources can be captured and used directly or the steam is used to generate electricity.
Geothermal energy is useful in generating electricity as well as in heating and cooling applications. It is a renewable source of energy because the heat is continuously produced inside the earth. Therefore, it is a never-exhausting source of energy.
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describe 3 characteristics of life that archea bacteria have
methanogens, halophiles, and thermophiles. The methanogens are anaerobic bacteria that produce methane. They are found in sewage treatment plants, bogs, and the intestinal tracts of ruminants.
Which consequences can be caused by dumping trash into the ocean
Answer: lots of pollution
i don't really know how to explain it but it will definitely kill and destroy the earth and its population.
Why is it important to monitor the amount of nutrient available in freshwater ecosystems?
a
Too little nutrients available will limit the amount of producers and lead to smaller food chains
Too much nutrient available can lead to eutrophication and damage the ecosystem
Oь
A & B are both correct
d
None of the above are correct
Answer:
A & B are both correct
Explanation:
Too little nutrients available will limit the amount of producers and lead to smaller food chains because if you don't have enough nutrients to sustain producers, producers are backbone of foodchains hence not enough producers will survive and this will lead to smaller food chains.
Too much nutrient available can lead to eutrophication and damage the ecosystem, this is very true because if you have ever heard of algal blooms or seen like green layer covering large amounts of water, those areas are full of algaes and they are taking it alot of O2 in water thus depriving the organisms and plants nearby of O2 and essentially killing them.
Marsupial mole rats evolved in New Zealand in the 1700s and had few natural predators so they overpopulated the area. Scientist developed a virus to bring their numbers down, which was successful for awhile. After several generations though, their numbers began to increase. Why? *
A. Marsupial mole rats mated with other mole rats and created a new species.
B. Marsupial mole rats learned to survive regardless of being sick.
C. Some marsupial mole rats had a natural immunity to the virus.
d. Marsupial mole rats changed their reproductive cycle and were able to reproduce more.
Answer:
C. Some marsupial mole rats had a natural immunity to the virus.
Explanation:
According to Darwin's evolutionary theory, over time some of marsupial moles may have acquired natural immunity which evolves as an adaptive trait in the population. Since these organisms have more chance to survive and reproduce (survival of the fittest), they will likely transmit the natural immunity to the next generation .
Select the following that are examples of technology in science. Check all that apply.
Answer:
edge2020
1
2
5
Explanation:
Navajo writes out the chemical equation for photosynthesis. She includes two reacting molecules to the left of the arrow and two resulting molecules to the right. What must be added to the chemical equation to more accurately represent Photosynthesis
Answer:
Write sunlight on top of the arrow that is between the two sides and chlorophyll on the underside of the arrow.
Explanation:
EXAMPLE:
What type of pollutants are emitted directly from identifiable sources?
Answer:
Point-source pollutants.
Explanation:
Point-source pollutants are emitted from single identifiable sources. For instance, untreated waste water from a particular oil refinery or factory is a point-source pollutant.
What do buffalo eat during the wet season ?
Answer:
grass and herbs, but water buffalo will also eat aquatic plants.
Explanation:
name 2 structures present in root hair cell that are not present in a red blood cell
Answer:
Root hair cells are alive and therefore need energy, which is why root hair cells contain many mitochondria in them. Root hair cells don't contain chloroplasts. Chloroplasts are used by the plant to make food using light energy. Since the roots aren't exposed to any form of light, they have no need for chloroplasts.
2 structures present in root hair cells are Cytoplasm and Cell membrane.
What does the cytoplasm do in a cell?
The cytoplasm is the gel-like fluid inside the cell. It is the medium for chemical reactions. It provides a platform upon which other organelles can operate within the cell. All of the functions for cell expansion, growth, and replication are carried out in the cytoplasm of a cell.
What are a cell membrane and its function?
The cell membrane, also called the plasma membrane, is found in all cells and separates the interior of the cell from the outside environment. The cell membrane consists of a lipid bilayer that is semipermeable. The cell membrane regulates the transport of materials entering and exiting the cell.
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Name 3 places in your body where Mitosis might take place
Answer:
It can take place in many areas. Three being the skin, hair and liver.
Explanation:
Answer:
skin tissues, hair and liver
Explanation:
Need some help on this
Answer:
planet A is mars
planet B is earth
Explanation:
mars is known not to have Evan a slight bit of water.
Earth is rich in oxygen, there are water bodies present and because it has water many clouds must be present.
A single prokaryotic call can divide several times in an hour.most eukaryotic cells cannot divide this quickly?
Answer:
D
Explanation:
Eukaryotic cells are more structurally complex than prokaryotic cells.
hope it helps!
Alonte is viewing a cell under a microscope.
The presence of which of the following cell structures would tell him that the cell is eukaryotic?
Choose 1 answer:
Ribosomes
Cytoplasm
Nucleus
DNA
Answer:
DNA
Explanation:
you can tell if the DNA is within the nucleus in the cell then it is eukaryotic but if the DNA is free floating in the cell then it's prokaryotic
Answer:
Nucleus
Explanation:
Only eukaryotes have a membrane-bound nucleus, which directs cellular functions and stores genetic information
How old is the earth
Answer:
4.543 billion years old
Explanation:
The Law of Independent Assortment states
Answer:
that allele pairs separate during the formation of gametes. This means that traits are transmitted to offspring independently of one another.
Explanation:
Which is not part of the recipe for a thunderstorm to form?
O A. Unstable air
OB. A lifting force
O C. Moisture in the low atmosphere
O D. A cold front advancing
A cold front advancing is not part of the recipe for a thunderstorm to form.
How thunderstorms are formed ?
The same factors are required for each thunderstorm: lift, unstable air, and moisture. Oceans usually provide moisture. When warm, moist air is close to the ground and cold, dry air is above, unstable air forms. Lift comes from contrasts in air thickness. It raises unstable air, resulting in the formation of a large thunderstorm cloud.Commonplace wellspring of dampness for tempests are the seas. However, the amount of moisture that is added to the atmosphere is heavily influenced by the temperature of the water. Air is considered unstable if it continues to rise or sink when given a push. Warm, moist air near the surface and cold, dry air above indicate an unstable air mass.A piece of air or a bubble will continue to rise on its own in these circumstances if it is pushed upward. This parcel will cool as it rises, and some of the water vapor will condense, forming the typical thunderstorm's tall cumulonimbus cloud.Most of the time, in order for a thunderstorm to form, there needs to be something that pushes the air upward and starts the upward motion. Air density is the direct cause of this push upward.Different air densities result from the transfer of some of the sun's surface heating energy into the atmosphere. As the density decreases, the tendency for air to rise increases. The primary source of lift is this difference in air density, which can be achieved in a variety of ways.To know more about thunderstorms check this:
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What happens to a cell during INTERPHASE?
The replication of DNA is a complicated process during which DNA is occasionally damage. Discuss when in the cell cycle DNA is assessed for damage and predict what effect DNA damage would have on the cell cycle.
Answer:
DNA is first checked during the G1/S. This is when the integrity of DNA is checked to make sure it's correct and ready to be replicated in the S phase. If the DNA fails the check, it can leave the cell cycle or enter a resting phase called G0, where it stays until the DNA is corrected. Any damage is fixed by proteins, the key one being the p53 protein, a tumor suppressor. It works by halting the cell cycle and activating repair proteins. If the damage is irreparable, it initiates apoptosis, programmed cell death, to prevent the damaged DNA from replicating and dividing into cells. If this gene is missing or mutated, damaged cells continue to replicated rapidly and lead to the rise of tumors and thus cancer. If nothing is wrong or the errors are fixed, the G1/S checkpoint gives the green light, to allow DNA to replicate. The now replicated chromosomes are once again checked in the G2 checkpoint. Here, they're checked again for integrity and whether or not replication occurred correctly. If the DNA fails these checks, the cell once again attempts to fix the problems. If these problems aren't corrected due to mutations in the repair proteins, the cells containing the damaged chromosomes will continue to replicate rapidly and cause cancer. Should no problems occur, cyclin dependent kinases (CDKs) are activated and allow the cell to continue into mitosis. DNA damage can basically lead to the rapid division of mutated cells and cancer.