Answer:
Dramatic evolution within human genome may have been caused by malaria parasite. A genetic mutation that protects people from a common form of malaria spread like wildfire in sub-Saharan Africa about 42,000 years ago, according to a new study.
People develop sickle-cell disease, a condition in which the red blood cells are abnormally shaped, if they inherit two faulty copies of the gene for the oxygen-carrying protein haemoglobin. The faulty gene persists because even carrying one copy of it confers some resistance to malaria.05-May-2011
Explanation:
An evolutionary force, called balancing selection, appears to be responsible for maintaining defects in our DNA associated with diseases, such as sickle cell anemia, because the mutation's damaging effects might be offset — in a biological way of thinking — by its potential benefits.
Match each statement to the type of behavior it describes. Jenna published the results of her latest experiment for the public to see. Malcolm altered an experiment to be able reach his desired conclusion. Elena keeps complete records of all her experiment results. Neal shared the results of his field study even though they didn’t support his hypothesis.
Answer:
See the answer below
Explanation:
It may seem that the question is incomplete. The complete question reads:
Match each statement to the type of behavior it describes. Jenna published the results of her latest experiment for the public to see. Malcolm altered an experiment to be able reach his desired conclusion. Elena keeps complete records of all her experiment results. Neal shared the results of his field study even though they didn’t support his hypothesis. Put each description to the group it belongs to. 1.Responsible 2.Irresponsible.
To answer the question:
Responsible behavior
Jenna published the results of her latest experiment for the public to see.Elena keeps complete records of all her experiment results.Neal shared the results of his field study even though they didn't support his hypothesis.Irresponsible behavior
Malcolm altered an experiment to be able to reach his desired conclusionResponsible behaviors are those that support responsible scientific practices and do not jeopardize the objective nature of research. Every data during experiments must be well kept and after thorough analysis, results must be published fro the public to see irrespective of whether it agrees or disagrees with the original hypothesis.
Altering an experiment in order to achieve the desired result is grossly irresponsible, as this eliminates the objectivity that should be the main goal of every experiment. Bias must be eliminated from every scientific experiment.
Which of the following would be examples of abiotic factors in a mountain river ecosystem?
fish, algae, and sand
sand, water, and fish
sand, water, and minerals
water, fish, and algae
I WILL GIFT BRAINLIEST FOR THE RIGHT ANSWER!! In the following reaction, if you wanted to produce more chlorine gas (Cl2), what should you do? (2 points) 4HCl + O2 ⇄ 2H2O + Cl2
Answer:
B. the rate of forward reaction increases .
1.A virus mutates, and therefore it has which of the following traits of living things?(1 point)
It uses energy
It evolves.
It grows and develops.
It is made of cells.
2.Compare a virus to a unicellular organism.(1 point)
Viruses reproduce through asexual reproduction; unicellular organisms need a host cell.
Neither unicellular organisms nor viruses respond to stimuli.
Unicellular organisms have a cell membrane made from a lipid bilayer; viruses have a protein coat.
Viruses need energy; unicellular organisms do not need energy.
3.Summarize the lytic cycle.(1 point)
A virus copies its genetic material and then splits its cell membranes in half to form identical viruses.
A virus lays eggs on the host cell’s protein coat, which then hatch and move on to infect other cells.
The viral DNA incorporates itself with the host cell’s and replicates whenever the host cell replicates itself.
A virus injects its genetic material into the host cell, copies itself, and then forms new viruses that burst out of the host cell.
4.Differentiate between the lysogenic and lytic cycles.(1 point)
The host cell copies its own DNA during the lytic cycle.
The host cell is destroyed during the lytic cycle.
The virus injects DNA into the host cell during the lysogenic cycle.
Viral proteins are synthesized during the lysogenic cycle.
5.Infer why doctors recommend people, especially elderly and those with weak immune systems, get the flu vaccine every year.(1 point)
They should get the flu vaccine because viruses mutate.
They should get the flu vaccine because their bodies already have a resistance.
They should get the flu vaccine because viruses do not mutate.
They should get the flu vaccine because their bodies do not build up resistance.
Please i really need help
Answer:
1. It grows and develops
2. Unicellular organisms have a cell membrane made from a lipid bilayer; viruses have a protein coat.
3. A virus injects its genetic material into the host cell, copies itself, and then forms new viruses that burst out of the host cell.
4. The host cell is destroyed during the lytic cycle.
5. They should get the flu vaccine because their bodies do not build up resistance.
Explanation:
These are the answers I chose from when i did it 10 minutes ago, they wont let me go back to the quick check to confirm it, but this was the best I could do.
The trait of living things that's depicted by a virus that mutates is that it evolves.
The difference between a virus and a unicellular organism is that Unicellular organisms have a cell membrane made from a lipid bilayer; viruses have a protein coat.
The lytic cycle is when a virus injects its genetic material into the host cell, copies itself, and then forms new viruses that burst out of the host cell.
The difference between the lysogenic cycle and the lytic cycles is that the host cell is destroyed during the lytic cycle.
The reason why doctors recommend people, especially the elderly and those with weak immune systems, get the flu vaccine every year is because they should get the flu vaccine because viruses mutate.
It should be noted that when a virus mutates, it shows its ability to evolve. In such a case, there's transformation and development regarding the virus.
People are advised to get the flu vaccine every year because viruses mutate. In this case, getting the flu vaccine will help protect the person from the virus.
Getting a flu vaccine is vital especially for the people that have a low immune system as well as for the older people who are already weak.
In conclusion, the correct options are B, C, D, B, and A.
Read related link on:
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What kind of frog\toad is this?
Giving brainliest to the first one who knows
Answer:
I'm having trouble seeing the picture
Answer:
it looks like an american toad or wood frog
Which of the following choices correctly shows an example of the way energy flows in an ecosystem? A. Rattlesnake to Hawk to Kangaroo Rat to Fungus to Cactus B. Fungus to Hawk toRattlesnake to Kangaroo Rat to Cactus C. Cactus to Kangaroo Rat to Rattlesnake to Hawk to Fungus D. Cactus to Fungus to Kangaroo Rat to Hawk to Rattlesnake
ANSWER:
C. Cactus to Kangaroo Rat to Rattlesnake to Hawk to Fungus
EXPLANATION
Living organisms in an ecosystem obtain energy by feeding on one another. As one organisms feeds on the other, ENERGY FLOWS. However, the flow of energy is UNIDIRECTIONAL. The flow of energy is represented by a FOOD CHAIN where the arrow signals which organism is feeding on which.
According to this question, a typical example of energy flow in a terrestrial ecosystem is as follows:
Cactus → Kangaroo rat → Rattlesnake → Hawk → Fungus
In the above food chain, energy flows as cactus plant (producer) is fed on by kangaroo rat (primary consumer), which is fed on by rattlesnake (secondary consumer), which is fed on by hawk (tertiary consumer). Hawk is decomposed by fungi (decomposer) when it dies. Energy flows in this direction.
Hence, an example of the way energy flows in an ecosystem is represented by Cactus to Kangaroo Rat to Rattlesnake to Hawk to Fungus
Explain osmosis using this image
Answer:
A liquid moving from an area of low concentration, to an area of high concentration through a semi-permiable membrane.
Explanation:
Hope this helps :)
how do plants use carbon dioxide
A.They release it as waste
B.To build proteins
C.They store it as fuel in limestone deposits
D.To produce sugars
Answer:
to build protein............
Answer:
C. To produce sugars.
HOPE IT HELPS YOU.one limitation to science is that it cannot answer questions about ______ ?
Answer: Phenomena.
Explanation: That includes topics such as infinity, the future and god.
Hope this helps!
. El metabolismo consiste en la construcción y destrucción constante de la biomasa que compone a los seres vivos (cuerpo), para lo que requiere de energía, por lo tanto, para que un organismo se mantenga activo requiere, * 5 puntos a. Que el organismo descanse adecuadamente b. Se alimente adecuadamente c. El catabolismo y anabolismo se mantengan en equilibrio dinámico d. Consumir muchos carbohidratos
Answer:
express your answers in English
I have four brothers
"This is what type of
observation?
Hi please answer the following questions
•Mercury is used in temermeter.Give reason!
•Name two non flowering plants
•Some leaves are modified to trap insects. Give reason.
Answer:
It's used in thermometers because it has high coefficient of expansion.
conifers,mushrooms
plants trap insects because they grow in soil which is usually thin and is also poor in nutrients , so they eat insects to fulfill their nuttient requirement
HERE YOU GO HOPE IT WILL HELP YOU
explain crop modifications in your own words.
Which of the following are most likely to be listed as common climatic effects in inner-urban areas?
cold spots
frost pockets
heat islands
temperature zones
Answer:
temperature zones i guess
Explanation:
cause we all know how much climate will change the much thicker ozone layer will be and comparing to last summer this summer is tempting hot so i guess its tempersture zones
Answer:
heat islands
Explanation:
i did it and got it right!!
A key component in the formation of organic compounds, such as nucleic acids and ATP
The correct answer is Phosphorus I just took the test.
Identify the graph that matches each of the
following stories:
a. I had just left home when I realized I had forgotten my books so I went back to pick them up.
b. Things went fine until I had a flat tire.
c.I started out calmly, but sped up when I realized I was going to be late.
Answer:
A. 4, B. 2, C. 1
Explanation:
For a scientific theory to be valid, it must allow you to
O perform experiments
obtain new results each time.
find a new, more complex explanation
Make predictions
Answer:
Explanation:
That's quite a bit of points. Offer 20 next time (which shows up as 10).
Not all experiments lend themselves to this, but the best ones do. Make predictions. The startling experiments (the best of them) certainly allow you to make predictions
Most of the time, experiments confirm what was originally thought. It is, however, the best answer among this bunch.
A is also possible, but not always. I will stick with D, but I think others will pick A.
What describes how individuals are distributed, or spread, throughout their habitat.
1: Population density
2: Population distribution
50 POINTS In your own words, describe the connection between the heat from earth’s core and the movement of tectonic plates.
Answer:
ert
Explanation:
Identify the interaction used to describe each type of interdependence among organisms. _______Having too many fish in a pond can limit the amount of food and space available. _________ The cheetah population depends on the gazelle population for food the answer choices are predation and competition
Having too many fish in a pond can limit the amount of food and space available is Commensalism.
The cheetah population depends on the gazelle population for food Mutualism.
What are the three major types of interactions among organisms?There are 03 main types of interchange among organisms:
Competition, Predation, and Symbiosis.Thus, Commensalism and Mutualism is the correct answer.
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Answer:
Identify the interaction used to describe each type of interdependence among organisms.
✔ competition
Having too many fish in a pond can limit the amount of food and space available.
✔ predation
The cheetah population depends on the gazelle population for food.
Given the relationships identified above, determine what would happen to the populations under the following circumstances.
✔ increase
If the cheetah population decreases, what would happen to the gazelle population?
Explanation:
Sort the tiles to show the characteristics of life that they describe.
Answer:
The characteristics of the life shared by all living organisms.
Explanation:
There are seven characteristic of life shared by living things.
Reproduction :- these characteristics are performed that single cell organisms diving to the cell prepares to the form of the second new cell.Regulation :- regulation perform that complex and require to the internal functions and contain that specific function.Energy processing :- the energy process performed that source of energy for the metabolic activities, and convert the chemical energy.Homeostasis :- these characteristics maintain the internal conditions and diverse the chemical process.Growth :- these characteristics provide the instruction direct cellular growth and development .Sensitivity :- that can perform by the plant can be source of light, considered by the positive response .Order :- this is highly organized structure and cell complex to the molecules.Which describes a grizzly bear’s habitat? all the biotic factors in the ecosystem all the abiotic factors in the ecosystem the role of the bear in the ecosystem the physical area where the bear lives
Answer:
it is D
Explanation:
A grizzly bear’s habitat comprises of the physical area where the bear lives
What is a habitat?A habitat is defined as the dwelling home of living organisms.
There are three major types of habitat; namely:
Terrestrial habitatAquatic habitatArboreal habitatTerrestrial habitat is the land habitatAquatic habitat is the water habitatArboreal habitat is the tree habitatLearn more about habitat:
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What is the largest source of waste generation?
A. Individuals and industry
B. Individuals and agriculture
C. Developing countries
D. Industry and agriculture
Answer: B. Individuals and agriculture
Explanation:
Which major processes were needed for the origin of life on Earth?
Answer:
I think it's a climate
Write any two factors that affect the efficiency of machine
Answer:
The factors that affect the efficiency of machine are
Conductor content _ load dependent Magnetic steel _ mainly constantI HOPE I HELP YOU.
What is an advantage of electron microscopes compared to light microscopes?
They have a much higher power of resolution.
They can be used to view live specimens.
They are inexpensive and commonly found in classrooms.
They are helpful during dissections.
Answer:
They have much higher power of resolution.as compared to light microscope.
All of the following statements about NAD are true except: Group of answer choices NAD is reduced to NADH during both glycolysis and the Krebs cycle. NAD has more chemical energy than NADH. NAD is reduced by the action of enzymes. NAD can receive electrons for use in chemiosmosis. NAD can be recycled many times.
Answer:
"NAD has more chemical energy than NADH" is the FALSE statement.
Explanation:
It is totally true that NAD can be recycled many times, it can actually receive electrons for use in chemiosmosis and is reduced by the action of enzymed. During both glycolysis and the Krebs cycle. All these statements are true. But when it comes to NAD and NADH, it is false that NAD has more chemical energy than NADH. There is actually more energy in one NADH, that can lose electrons to transfer energy.
what is role of the stomach in the human digestion system
Explanation:
The stomach is a hollow organ, or "container," that holds food while it is being mixed with stomach enzymes. These enzymes continue the process of breaking down food into a usable form. Cells in the lining of the stomach secrete a strong acid and powerful enzymes that are responsible for the breakdown process. When the contents of the stomach are processed enough, they’re released into the small intestine.
Answer:
first the stomach secretes the gastric juice which is made up of digestive enzymes and digest the hydrochloric acid and plays a big role in digesting nutrients.
Explanation:
hope it helps
What is the purpose of the Synthesis (S) phase of the cell cycle?
A. Create a copy of the cell
B. Synthesize extra organelles
C. Duplication of RNA
D. Duplication of DNA
The purpose of the Synthesis (S) phase of the cell cycle is the duplication of DNA. The correct option is D.
What is the cell cycle?A cell cycle is a process of dividing a cell into two cells. It is a four-stage process that includes increasing the cell, diving the DNA, and the ready for cell dividing and then dividing into two cells.
The S phase is the synthetic phase. The phase includes duplication of DNA and dividing of DNA. During cell division or DNA replication, this process occurs.
So, all other statements are false, in the S phase, the DNA duplicates in the nucleus and the cell will ready to duplicate for cell division and mitosis. It is one of the processes of cell division or DNA replication.
Thus, the correct option is D. Duplication of DNA.
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what is the first president of of Canada
Answer:
Sir John Alexander Macdonald was the first prime minister of Canada