Answer:
Poor research could potentially impact the health and welfare of the public.
Explanation:
Scientific studies are generally believed to be based on thorough research. This implies that members of the public always trust scientific publications and rely on same as a source of accurate and trustworthy information.
Science, being empirical in nature is believed to eliminate bias in its research and reportage of studies. Scientific research publications is often a source of information for field practitioners in diverse disciplines as well as the general public.
Poor research will mislead a large section of the public, both professionals in that field as well as laymen. This poor research could potentially impact the health and well being of members of the public negatively because they may be led to believe false information which can be disastrous. This is the reason why ethical guidelines are needed for the way scientific information is communicated.
2. Assume that crossing over does not occur in the region of each chromosome that is associated with the centromere. You have 46 centromeric regions in each cell, 23 that are copies of the DNA in your mother’s egg and 23 that are copies of the DNA father’s sperm. Show your work for A,B,C a. For any given gamete, what is the probability that all the centromeric regions (chromosomes) will be copies of the same ones that you received from your mother? b. It has been estimated that the average person is heterozygous for at least 2,000 protein forming genes. How many different kinds of gametes is it theoretically possible for each person to produce? c. Considering the maternal and paternal origin of the centromeric regions alone, how many different kinds of gametes can you produce?
Answer:
See below
Explanation:
A. centromeric regions from mother in one cell: 23
total number of centromeric regions in one cell: 46
for every centromeric region that is inherited by the gamete, there is a 0.5 probability that it is from the mother. Hence, if all are from the mother:
0.5 ^ 23 = 1.19 x 10^(-7)
B. Heterozygous for 2000 genes means 4000 possible alleles.
2 ^ 4000 = 1.3 x 10^(1204)
C. 2 ^ 46 = 7.03 x 10^(13)
what is the composition of gastric juice and their functions?
Answer:
Mostly HCl, Pepsin, Lipase, Water, and other Electrolytes
Explanation:
The gastric mucosa secretes 1.2 to 1.5 litres of gastric juice per day. Gastric juice renders food particles soluble, initiates digestion (particularly of proteins), and converts the gastric contents to a semiliquid mass called chyme, thus preparing it for further digestion in the small intestine. Gastric juice is a variable mixture of water, hydrochloric acid, electrolytes (sodium, potassium, calcium, phosphate, sulfate, and bicarbonate), and organic substances (mucus, pepsins, and protein). This juice is highly acidic because of its hydrochloric acid content, and it is rich in enzymes. As noted above, the stomach walls are protected from digestive juices by the membrane on the surface of the epithelial cells bordering the lumen of the stomach; this membrane is rich in lipoproteins, which are resistant to attack by acid. The gastric juice of some mammals (e.g., calves) contains the enzyme rennin, which clumps milk proteins and thus takes them out of solution and makes them more susceptible to the action of a proteolytic enzyme.
Answers:
It is a unique combination of hydrochloric acid (HCl), lipase, and pepsin. It is found in all vertebrates.
Main function is to inactivate microorganisms.
Hope It helps.
A researcher investigates a recently discovered species of plant. The plant has vascular tissues and exhibits a sporophyte and a gametophyte
generation, but lacks seeds. How should the researcher classify the plant?
Answer;
pteridophyte
Explanation;
Pteridophyte are vascular plants in the phylum plants that reproduce by releasing spores rather than seeds.Other characteristics of pteridophyte includes;
They show alternation of generations, that is the sporophyte generation and gametophyte generation are observed.Sporophytes has true roots, stem and leavesSporangia are produced in groups on sporophyllsFacilitated diffusion requires _____.
A.membrane proteins
B.transport proteins
c.membrane pouch
d.energy
I NEED HELP ASAP!!
(i will mark brainliest or like your tiktoks l m a o)
Answer:B
Explanation:
Answer:membrane proteins is the right answer
Explanation:
А (blank)
is a chemical substance that organisms require to live.
Answer:
Nutrient
Explanation:
Nutrients are compounds in foods which are essential to life and health of living organisms, providing them with energy. They are the building blocks for repair and growth and substances necessary to regulate chemical processes. There are six major nutrients:
Carbohydrates,Lipids (fats),Proteins,Vitamins,Minerals,Water.The nucleus in both plant and animal cells “specializes” the cells so they can do different things- for example, a liver cell or a muscle cell do different things. Thinking about plants or trees, what special functions might different cells in a tree or plant do?
Answer:
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Explanation:ewwe
F. Answer the following questions in brief.
1. Why should we use fossil fuels judicially?
3. Define the term 'fossil fuel. Give two examples.
4. How can we conserve fossil fuels?
5. What is calorific value of a fuel?
6. What are conditions required for the formation of fossil fuels?
2. Give full form of CNG. Why is it preferred over other fossil fuels?
1. fossil fuels should be used judiciously as they can be exhausted if used excessively and will take time to replenish
2. fossil fuels are fuel formed by natural processes such as decomposition of dead organisms .
3. They can be easily exhausted
4.The calorific value of a fuel is the quantity of heat produced by its combustion i.e at constant pressure and under “normal” (standard) conditions (i.e. to 0 degree C and under a pressure of 1,013 mbar).
5. COMPRESSED NATURAL GAS . CNG preferred than fossil fuel because it produce greenhouse gases upon combustion, it is a more environmentally clean alternative to other fossil fuels
Answer:
1. fossil fuels should be used judiciously as they can be exhausted if used excessively and will take time to replenish
2. fossil fuels are fuel formed by natural processes such as decomposition of dead organisms .
3. They can be easily exhausted
4.The calorific value of a fuel is the quantity of heat produced by its combustion i.e at constant pressure and under “normal” (standard) conditions (i.e. to 0 degree C and under a pressure of 1,013 mbar).
5. COMPRESSED NATURAL GAS . CNG preferred than fossil fuel because it produce greenhouse gases upon combustion, it is a more environmentally clean alternative to other fossil fuels
Explanation:
The lock and key mechanism refers to
addison disease
1. what are the symptoms
2. who can it affect the most
3. what other issuses it can cause
4. what medication or changes in diet or lifstyle can help with symptoms relief
HELP ME PLEASE!
Answer: Addison disease is an adrenal insufficiency. This occurs because of the fact that adrenal gland produces very low quantity of hormones like cortisol, and aldosterone.
Explanation:
1. The symptoms of addison disease are loss of appetite, increased thirst, low mood, and muscle fatigue.
2. The addison disease is an autoimmune reaction, which can affect people of all age groups.
3. It can cause other diseases like tuberculosis.
4. The hormone replacement therapy is ideal for the treatment for addison disease. The use of oral corticosteroids is ideal. The diet containing balanced proteins, carbohydrates, fats, increased intake of vegetables including vitamins, and minerals are necessary for treatment of addison disease.
differentiate between reverse osmosis and osmosis
What might happen to the organisms in the food web below if the number of phytoplankton and vegetation drastically decreased?
Answer:
i don't now exactly how to answer this when theres' no food chart however as the vegetation and phytoplankton drastically decrease everything decreases. This is because the producer the bottom of the food chain also known as vegetation is the prime source of energy in every food chain. when there's scarce amounts of producers a domino affect will occur. There will be no food for the first consumers to eat leading their population to decrease and the animals that feed off them will decrease then the animals that feed of them will decrease and so on until the organisms of the food web die out.
Hello everyone y'all probably tried but can anyone answer this ? for me Why are acid and base indicators important? How could they be used in everyday life?
Answer:acid and base indicators are used to estimate the pH of a solution
Explanation:
What element do all organic compounds contain?
Carbon
Hydrogen
Nitogen
Oxygen
Answer:
carbon
Explanation:
carbon is a chemical element which exhibit a atomic mass of 12 and its a nonmetal
Choose the FALSE statement about the space shuttle program. A. It lasted over 30 years. B. It launched the Hubble Space Telescope. C. It conducted scientific experiments in lunar orbit. D. It helped in the creation of the International Space Station.
The space shuttle can only get as high as the low-earth orbit (LEO). This is a few hundred or so miles within the earth's surface. Compare this to the distance from the earth's surface to the moon is about 238,855 miles on average.
According to NASA's website: "It does not carry enough propellant to leave Earth's orbit and travel to the Moon. The Space Shuttle also is not designed to land on the Moon since it lands like an airplane and the Moon has no atmosphere"
-)
Environmental factors can influence natural selection because they can increase or decrease
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the number of chromosomes in an individual.
the number of chromosomes in a population.
the amount of genetic variation in an individual.
the amount of genetic variation in a population.
Answer:
D
Explanation:
A and B are wrong because environmental impacts can't change the amount of chromosomes an animal has. D is a better answer than c because genetic variation happens within a population rather than an individual.
Answer:
Answer is the amount of genetic variation in a population Natural selection gets impacted by environmental factors.
Explanation:
How does the flu affect businesses and governments? Could it affect residents’ access to certain resources?
Answer:
Ofcourse it does
Explanation:
Imagine one person have flu and he or she goes to met someone who is healthy but when they talk other infected person's flu goes to other healthy person and that new infected person goes to another and they go to another and thats how it seperate. But we have solution for this the first infected person need to wear mask so that his or her flu don't pass out to anothers.
What is gel electrophoresis used for?
O A. Cutting DNA into sections
O B. Separating strands of DNA
O C. Performing reverse transcription
O D. Cloning organisms
Answer:
B. separating strands of DNA
Gel electrophoresis used for separating strands of DNA
What is electrophoresis?Electrophoresis can be defined as a technique used to separate molecules of DNA, RNA or protein molecules on the basis of their electrical charge and size
It also used to identify microorganismsIt is also used in genetic testingElectrophoresis analysis is used in forensics to compare DNA,Below are four major components of gel electrophoresis:
DNA is extractedIsolation and amplification of DNADNA added to the gel wellsElectric current applied to the gel.Learn more about gel electrophoresis:
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Why didn't the fungus evolve to be resistant to bacteria's antibiotics?
Answer:
Antibiotic-resistant germs can multiply. Some resistant germs can also give their resistance directly to other germs.
Explanation:
Which graph shows the presence of nitrogen-fixing bacteria in the soil
Answer:
2
Explanation:
The graph that shows the presence of nitrogen fixing bacteria in the soil would be graph 2.
Nitrogen fixing bacteria are bacteria that are capable of converting atmospheric nitrogen into plant-usable nitrogen in the soil. The conversion is done in two stages;
1. First, atmospheric nitrogen is converted into ammonia.
2. Ammonium is converted into usable nitrate
Hence, the correct graph is the one in which the amount of atmospheric nitrogen decreases with a corresponding increase in the amount of ammonia. This would indicate the conversion of nitrogen into ammonia which is the first step in nitrogen fixation by nitrogen-fixing bacteria.
Graph 2 represents the presence of nitrogen-fixing bacteria in the soil.
This is because in this graph the concentration of atmospheric nitrogen (N2) is lower and the concentration of ammonium (NH4) is higher. The nitrogen-fixing bacteria converts or fixes atmospheric nitrogen that can't be absorbed by the plants into ammonium or nitrates which can be absorbed by the plants and make necessary amino acids for the body so we can conclude that graph 2 indicates the presence of nitrogen-fixing bacteria in the soil.
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in order to survive in its environment a single celled organism uses a contractile vacuole to remove excess water that diffuses into its cell. Another species a hydra also excretes excess water. Both processes involve the use of energy. Based on this information, state whether these two organisms live in fresh water or salt water support your answer
Answer:
They would live in salt water.
Explanation:
Salt water is a hypertonic solution where water needs to move outside of the cell because there is too much solute outside. Because the 2 organisms are removing excess water, it shows that they are living in salt water where water flows outside instead of inside the cell.
Based on the available information, these two organisms would:
Live in salt waterAccording to the given question, we can see that there is a need for survival which makes a single celled organism to make use of the vacuole to remove the excess water which it diffuses into its cell.
As a result of this, we can see that another specie, a hydra also excretes excess water which involves the use of energy.
Therefore, the conclusion we can reach about them is that they are living in salt water because it is a hyper tonic solution which allows water to move freely outside the cell because of the excess solute outside the cell wall.
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Write a short paragraph to contrast mitosis and meiosis in terms of type of cell produced function in an organism
Answer:
Mitosis is the process of cell division to make more cells, meiosis is the process of sperm and egg cells dividing to make a baby.
Explanation:
write a lab report on how materials move across a semipermeable membrane
