Answer:
The correct answer is: C. More Americans die from lung cancer than any other form of cancer.
Explanation:
Lung cancer is one of the most aggressive cancers in the world, and is also the cancer that kills the most people in America every year (it is estimated that almost 140,000 Americans die from this cancer every year).
Emphysema is a chronic pulmonary disease that occurs when the air sacs in the lungs, called alveoli, enlarge and get damaged. This condition is mostly caused by smoking, and makes up a very significant risk factor for lung cancer.
Even when smoking makes up a huge risk factor for developing this and other types of cancer, non-smokers can develop lung cancer as well.
Answer: A is wrong, emphysema is not a risk factor for lung cancer. Lung cancer is primarily due to exposure to tobacco smoke and carcinogens in the smoke. Emphysema is due to loss of alveolar surface areas due to destruction of alveolar surfaces.The results is loss enough surface area for oxygen and C02 exchange in the lungs.
Generally D is wrong lung cancer is not limited to smokers only, smoking just increases it risk. Passive smokers can also develop cancer.But 45-50 of lung cancers is due to smoking. Beneze inhale from rubber industries,and asbestos industries are other places where Lung cancer can be developed after exposure.
A type of lung cancer can be agressive.(SCLC) While others can be slow.
C is correct.
Thus A is Odd
Explanation:
You prepare an agar plate by spread plating & place an antibiotic disk in the middle of the plate. After incubating for a day at 37 degrees C, there are no bacteria on the plate. Which of the following is NOT a reasonable interpretation of what might have happened?
O The bacteria in the culture tube were already dead when you made the plate
O The medium used was defective and provided no nutrition for the bacteria
O The bacteria grew all over the plate but were then killed by the antibiotic
O The spreading tool was too hot when spreading the bacteria
Answer:
A.The bacteria in the culture tube were already dead when you made the plate
Explanation:
Antibiotics are the chemical substance used to kill or stop the growth of bacteria and some other microorganism.
Antibiotics are added to agar plate during experiment for the selection of only those bacteria with resistance to that antibiotic.
There can be several interpretation for the absence of bacteria such as:
The bacteria grows on the nutrients in the medium but due to defective medium they were unable to grow and die.It may also happen bacteria might have grown in all over the plate but due to the action of antibiotic, all the bacteria got killed.Tool used for spreading might kill bacteria as it was hot and bacteria may not be able to tolerate the excessive heat and die.Hence, the only not reasonable interpretation is bacteria in the culture tube were already dead when you made the plate.
So, the correct option is A.
In chickens, comb shape is determined by genes at two loci (R, r and P, p). A walnut comb is produced when at least one dominant gene R is present at one locus and at least one dominant gene P is present at a second locus (genotype R_ P_). A rose comb is produced when at least one dominant gene is present at the first locus and two recessive genes are present at the second locus (genotype R_ pp). A pea comb is produced when two recessive genes are present at the first locus and at least one dominant gene is present at the second (genotype rr P_). If two recessive genes are present at the first and the second locus (rr pp), a single comb is produced. Give genotypes for comb shape of the parents in the following cross: Rose crossed with pea produces 20 walnut offspring.
a. RR PP × rr pp
b. RR Pp × rr pp
c. Rr PP × rr pp
d. Rr Pp × rr pp
e. Rr pp × rr pp
Answer:
in the obtained options, there is no dominant gene for the crossed pairs, therefore, no answer would be correct, however, when assigning a dominant character to the P gene, the correct answer would be:
E. Rr pp *rrPp
Explanation:
According to the information obtained we deduce:
Comb shape is produced by R and P
Comb of walnuts with an R or a P
Pink comb: 1 dominant P and R at the first locus and 2 recessive at the next locus
Pea comb: 2 recessive at the start and one dominant in the next position
1 single comb: 2 recessive at both loci
Rr pp × rr Pp will produce from the interbreeding: 2 walnuts, 1 single and 1 pea offspring.
We deduce that for the pink comb the genotype is: Rrpp
and for the pea comb it is rrPp
Rr pp × rr Pp generates crosslinks containing RrPp, rrPp, rrpp as children in a 2: 1: 1 ratio.
Wildfires are _____.
Answer:
C
Explanation:
I think it is C I hope this helps!
Plant species A cannot fight most fungal infections, while plant species B makes a protein that kills many fungi.
What is one possible way for humans to engineer species A plants that can produce the fungus-killing protein?
Answer:They can insert the gene for the protein from species B into a chromosome in species A.
Explanation:
The one possible way for human to engineer species should be that it should insert the gene for the protein.
What is fungal infections?It is known as the mycosis that represent the disease on the skin that should be caused by the fungus. There are various kind of species of fungi. It should be lived on dirt, on plants, or the surface on the household and even on the skin. It would leads into the rashes or bumps in the skin problem
Therefore, The one possible way for human to engineer species should be that it should insert the gene for the protein.
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How much exercise is recommended for children?
A 60 minutes or more of moderate to vigorous exercise every day
B 45-60 minutes of moderate to vigorous exercise every other day
C 10-20 minutes of vigorous exercise every day
D20-30 minutes of moderate to vigorous exercise every day
Answer:
A. 60 minutes or more of moderate to vigorous exercise every day
Which of the following is an example of conduction?
A. The sun heating the ground
B. The ground heating the air
C. The hot air rising and cold air falling
Answer:
C
Explanation:
In conduction, heat moves from areas of more heat to areas of less heat by direct contact. In the atmosphere, conduction is more effective at lower altitudes where air density is higher.
....
Hope this answer can help you. Have a nice day!
What is a natural selection?
A. A process that happens in the absence of environmental conditions.
B. A single process of adaptation within an individual
C. The survival of the fittest
D. An ability to predict the outcome of a defined species over time.
Answer:
a
Explanation:
what opposes the sliding motion of two
surfaces that are in contact.
Answer:
Friction: A force that opposes the motion of objects that touch as they move past each other. Friction acts at the surface where objects are in contact.
Explanation:
The force that acts against your pushing force is called friction. is a force that resists the motion between two surfaces in contact. When you try to slide two surfaces across each other, the force of friction resists the sliding motion.
What is the lowest starting height from which the skater can start to successfully complete the ramp? Use the data from your chosen ramp design from the “Testing” section of the lab. Be sure to include if your results support your hypothesis.
Answer:
The lowest starting height the skater can be so that he complete the loop is 6 meters.
Explanation:
Answer:
mine was 8 but it might be 6
Explanation:
If all of the red squirrels were diseased and died off what would happen to this food web?
A region with a variety of organisms like tiger, fish, rabbits, birds, insects, etc.,
have a high level of
genetic diversity
species diversity
ecosystem diversity
none
Answer:
Species diversity is the right answer.
Explanation:
It is stated that the region is full of different organisms. An organism is defined as an individual animal, plant, or single-celled life form. All this variety of a region makes an ecosystem so having multiple ecosystems in a specific region is out of hand.
A biologist wants to know which fertilizer will result in the tallest pea plants. A chemist wants to know how much energy is required to change liquid water into water vapor. A geologist wants to know which type of soil is most permeable to water. A physicist wants to know what type of material reflects the most light.
Which of the following methods can best be used by all of these different scientists to answer their individual questions?
A.
taking a survey of their fellow researchers
B.
drawing a diagram as a model
C.
using popular magazines as reference materials
D.
performing a controlled experiment
Answer:
performing a controled experiment
Explanation:
this is because they can experience it themselcves, without having risk of external disturbance that would change tha outcome
Answer:
The answer is D - performing a controlled experiment
Explanation:
What did the "War Guilt Clause"
do to Germany after World War I?
A. It put the blame on Germany for World War I.
B. Germany would not be responsible for any
war debts.
C. It listed Germany as being part of the Black
Hand.
D. Germany would now be part of the Allied
Powers.
Corporation. All Rights Reserved.
Materials such as minerals, soil, fuels, and clean water are called
O natural resources
bio-elements
O habitats
O non of the above
Answer: natural resources
Explanation:
Jaden’s mass is 50 kilograms. His weight on Earth is
Answer:
Weight of the Jaden on earth is 490 N.
Explanation:
Formula
w = mg
Where w is the weight of an object , m is the mass of an object and g is acceleration of gravity .
Gravity on Earth is 9.8 m/s² .
Jaden’s mass is 50 kilograms.
g = 9.8 m /s²
m = 50
Put the values in the formula
Thus
w = 50 × 9.8
= 490 kg m /s²
(As N = kg m/ s²)
= 490 N
Therefore the weight of the Jaden on earth is 490 N.
Learning the rights, obligations, and expectations of a role to prepare for assuming that role in the future. ???
Answer:
Explanation: Anticipatory socialization involves learning the rights, obligations, and expectations of a role to prepare for assuming that particular role in the future
The process of learning the rights, obligations, and expectations of a role to prepare for assuming that role in the future is known as anticipatory socialization.
What is socialization?The term socialization refers to the rigorous process of acquiring the behavior pattern that enables a person to perfectly fit into the society of which he/she is an integral part of.
The term anticipatory socialization refers to the learning of the rights, obligations, and expectations of a role to prepare for assuming that role in the future.
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Why is it important for Scientists to develop a way to grow tissues that have built-
in system to supply
blood?
It is important for scientists to develop a way to grow tissues that have a built-in system to supply blood? A lack of blood flow determines the number of cell layers that can survive when they are transplanted. A lack of blood flow determines the types of tissues that can be grown in culture.
Answer:
ghgcktv bm
Explanation:
bvkgufchyjb
Which phrase best describes the rock's texture
Answer:
Foliated
Explanation:
In simplest form what is RNA and how is it different from DNA?
based on the scientists results, which of the following is true?
Which of the following explains one of the ways plants and animals depend on each other?
A
Animals make minerals, which plants take in through their roots and pass up to their stems.
B
Animals release water vapor when they breathe, which plants take in through their leaves.
C
Animals make their own food, which plants take in through their roots and pass to their leaves.
D
Animals release carbon dioxide when they breathe, which plants take in to help make food.
Answer:
Animals release carbon dioxide when they breathe which plants take in to help make food
Animals release carbon dioxide when they breathe which plants take in to help make food. So the correct option is D.
Why do animals and plants depend on each other?
All species present on earth depend on each other for performing basic life processes. Humans are not able to survive beyond a particular range of temperature and pressure. For all the species to survive, a healthy environment is required.
Plants and animals are dependent on each other. This is because, in ecological systems, no species can survive alone. Animals are dependent on plants. Plants are the primary producers in our ecosystem. They produce food that is consumed by primary consumers and the primary consumers are consumed by secondary consumers.
Plants use carbon dioxide for photosynthesis and it results in the production of oxygen. This is used by animals for the process of respiration.
Plants depend on animals for several reasons. These can be fruit and seed dispersal, pollination, and also for the carbon dioxide that the animals produce. Thus, both plants and animals are interdependent on each other.
Therefore, the correct option is D.
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Describe the microscopic structures you would expect to see in the lungs.
Answer:
Alveoli
Explain:
They are the workhorses of your respiratory system. You have about 480 million alveoli, located at the end of bronchial tubes. When you breathe in, the alveoli expand to take in oxygen. When you breathe out, the alveoli shrink to expel carbon dioxide.
Conservationistis strive to preserve or improve biodiversity in ecosystems, which includes monitoring populations of organisms to detect changes. Name two challenges that scientists may encounter when they’re monitoring populations of organisms in the wild.
Answer:
Conservationists are responsible to preserve or improve the biodiversity in ecosystem. Many wildlife sanctuaries are made to protect the biodiversity. There are several ways by which conservationists accomplish their aim such as monitoring populations of organisms to detect changes and promoting importnce of wildlife.
Two main challenges conservationists will face while monitoring population of organisms in wild are:
weather conditions may not support the monitoring equipments or clothing.Wildlife animals are dangerous and can cause harm.Hence, conservationists face the above challenges while dealing with wild.
Answer:
One challenge is cost. To effectively monitor populations in the wild, scientists need special equipment such as cameras, computers, and GPS monitoring equipment. Another challenge is accuracy. It’s impossible to count every single organism in an ecosystem, so scientists often work with estimates.
Explanation:
Which part of the brain is made of all four lobes? (Parts A, B, C, and D) *
Answer:
Yes frontal lobe is the correct answer.
Which the following is not and intertidal area? A. Marsh B. Coral reef C. Rocky Shore D. Estuary
Answer:
B. Coral reef
what is the importance of the folds and grooves of on the surface of the cerebrum
The data show that both paper grocery bags and plastic grocery bags cause harm to the environment.
Answer:
Can you explain more
Explanation:
Use the drop-down menus to complete the sentences.
Horsetail has been used to____
Ferns are used around homes and businesses for____
Club moss is sold during the holidays as a____
Use the drop-down menus to complete the sentences.
Horsetail has been used to____
Ferns are used around homes and businesses for____
Club moss is sold during the holidays as a____
The answers are:
Treat urinary tract infections, Landscaping, & decoration.The correct answers are mentioned as used to treat kidney stones and UTI, Landscaping, decoration respectively.
What are vascular plants?Vascular plants are a group of plants that have a specialized system for transporting water, nutrients, and sugars from the roots to the leaves and other parts of the plant. This system, called the “vascular system,”
It consists of tubes called xylem and phloem that are responsible for moving water and nutrients, respectively. There are two main groups of vascular plants: ferns and seed plants.
Seed plants include conifers, such as pine trees, and flowering plants, such as roses and daisies, club moss and horsetail used for various purposes as mentioned above.
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Why is it incorrect to say plants “breathe” Carbon dioxide (CO
Answer:
Becoz as we know that human being breathe oxygen and through carbon dioxide. Like wise it's opposite to plants. So it's incorrect to say that plant breathe carbondioxide.
How is electricity generated in the simulation?
Answer:
(LONG RESPONSE!)
In this work, several simulations and analyses are carried out to investigate the feasibility of generating electricity from underwater sea currents at Istanbul Bosphorus Strait. Bosphorus is a natural canal which forms a border between Europe and Asia by connecting Black Sea and Marmara Sea. The differences in elevation and salinity ratios between these two seas cause strong marine currents. Depending on the morphology of the canal the speed of the flow varies and at some specific locations the energy intensity reaches to sufficient levels where electricity generation by marine current turbines becomes economically feasible.
In this study, several simulations are performed for a 10 MW marine turbine farm/cluster whose location is selected by taking into account several factors such as the canal morphology, current speed and passage of vessels. 360 different simulations are performed for 15 different virtual sea states. Similarly, 8 different configurations are analyzed in order to find the optimum spacing between the turbines. Considering the spatial variations in the current speed within the selected region, the analyses are performed for three different flow speeds corresponding to ±10% change in the average value. For each simulation the annual energy yield and cluster efficiency are calculated.
