Answer:
A further increase in the size of a cell could result in a surface area too small for adequate exchange of materials.: A large surface to volume ratio means that a small amount of living matter has a large surface through which nutrients, oxygen and wastes can diffuse.
Canals such as the one shown in the image are artificial waterways built to allow the
movement of large ships that cannot travel along shallower, natural waterways.
Which of these is an advantage that a system of canals might bring to a city?
Answer:
b
Explanation:
Do you think phyiscal therapy is beneficial
for DMD patients? Why or Why not? ?
Biology
Answer:
The correct answer is - yes, physical therapy is beneficial for DMD patients.
Explanation:
Duchenne muscular dystrophy (DMD) is a condition that is inherited which affects the muscles, causing muscle weakness that occurs at a young age mostly from the age of four and worsens in a short time.
There is no known cure for this condition, however, to relieve the symptoms there are medicines such as steroids but for the daily routine work and provide movement physical therapy requires. The therapist helps them to do their maximum physical potential
list the types of infectious agents that may infect the human body
A. fungi, hookworms sore throats bugs
B. immune system diseases viruses fungi
C. infection sickness bacteria attackers
D. viruses bacteria, fungi, and parasites
Answer:
either a or d
Explanation:
ITS A my bad hope it works
____is a teratogen
BPA
Formaldehyde
Ultraviolet radiation
Alcohol
Answer:
Alcohol is a treatogen.
Certain chemicals, social drugs and some medicine are also some examples of treatogen.
In the 1520s, the Spanish explorer Cortes and his armies carried the virus that causes smallpox to NorthAmerica and South America.
The graphs above illustrate the death rate among both Europeans and American Indians from smallpox at that time. Which of the following statements best explains the difference in death rates?
F. People in Europe were healthier than American Indians.
G. Antibiotics were available in Europe but not in North America.
H. American Indians had never been exposed to the smallpox virus, so resistant individuals had not yet become common.
J. American Indians were exposed to a virus that was different from the virus for smallpox in Europe.
Answer:
I can't see the graph but I believe that the answer is H
define the term area opaca and area pellucide
Answer:
Explanatiothe peripheral opaque area that surrounds the area pellucida of a vertebrate embryo (as of a bird) formed by discoidal cleavage.
If RNA strand reads AUG CGU AAU UAU, what did its source DNA read?
Answer:
TAC GCA TTA ATA
and apparently my answer needs to be 20 charcters long
What happens when sugar solution is filtered
Answer:
The water passes through the filter paper.
Explanation:
Since sugar is able to dissolve completely in water, sugar solution is a homogenous mixture and thus its composition is uniform throughout and is able to be filtered out without separating its components.
Which is not a characteristic of a Prokaryote?
A) Simple
B) Has a nucleus
C) Replicates via cloning
D) Always single cell
Answer:A
Explanation:
Scientific laws attempt to explain nature...
true or false
Please help meeeeeeeeeeeeeeeeeeeeeeeeeee
Answer:
1.) The two gametes found in humans are the sperm and the ova.
2.) Variation, in biology, any difference between cells, individual organisms, or groups of organisms of any species caused either by genetic differences (genotypic variation) or by the effect of environmental factors on the expression of the genetic potentials (phenotypic variation).
3.) Because the alleles that the mother and the father carry are mixed together in the offspring.
4.) Because it only introduces genetic variation into the population if a random mutation in the organism's DNA is passed on to the offspring.
Please this is all I can answer
Describe the movement of water if cells are in a hypertonic solution, hypotonic solution, and isotonic solution.
Why?
45. If we put ANY type of cell in pure water: a) is pure water considered hypotonic, hypertonic or isotonic? b) would the cell shrivel or swell? c) what would happen to its turgor pressure (water pressure inside cell): increase or decrease?
Answer:
Explanation:
Pure water is an hypotonic solution that allows for diffusion of water into the cell and the cell will begin to swell.
The movement of water into the cell will make the cell swell but if water is moving outside the cell will collapse and shrink.
The turgor pressure is usually found withing the cell it ensures the movement of solutes when water is taken into the cell, the turgor pressure will increase. When water is taken out of the cell, the pressure will reduce.
Amino acid is to protein as
nucleotide is to nucleic acid
fat is to lipid.
DNA is to RNA.
sugar is to fat
Describe how genes, chromosomes, proteins, mutations, and mutagens are related to each other. PLZ HELP ME!!!!!!!
Answer:
DNA
Explanation:
All these events occur with the golgi apparatus and endoplasmic reticulum. All these terms have to do with genetic coding and how that genetic coding sends directions to the organelles inside the cell.
The cohesion-tension theory proposes that the physical properties of water allow the rise of water through a plant. Sketch and describe cohesion and adhesion of water molecules. Don't do the sketch part only do just the description part.
Answer:
Cohesion: the attraction force between the same type of molecules.
Adhesion: the attraction force between different types of molecules.
What do variations create?
Variations in species help them to adapt themselves to that particular environment and give them a chance of survival. For example, thermophilic bacteria are variants that are resistant to extreme temperature. They have a chance of survival in high temperate zones while others die.
DIRECTIONS: Indicate whether each statement is TRUE (T) or FALSE (F):
1. _____ Carbon dioxide (CO2) is a greenhouse gas
2. _____ Methane is a greenhouse gas
3. ______ As icebergs melt, they cool off the earth, slowing climate change
4. ______ Ocean pollution from trash and oil spills is making climate change worse
5. ______ Factories that burn coal to produce electricity emit (give off) CO2
6. ______ Our increased appetite for meat has increased climate change
7. ______ Climate change can happen naturally, without human activity
8. ______ Wind, solar, and hydroelectric power do not cause climate change
9. ______ Alternative forms of energy tend to be more expensive than burning fossil fuels
Please do not use an answer that doesn't make sense! I put 25 points because this is a long question
Answer:None PLEASE MAKE MORE SENSE MY GOSH
Explanation:NONE
Carbon dioxide (CO2) is a greenhouse gas. It is true
Methane is a greenhouse gas. It is true.
As icebergs melt, they cool off the earth, slowing climate change. It is true.
Ocean pollution from trash and oil spills is making climate change worse.It is true.
Factories that burn coal to produce electricity emit (give off) CO2. It is true.
Our increased appetite for meat has increased climate change. It is true.
Climate change can happen naturally, without human activity. It is false.
Wind, solar, and hydroelectric power do not cause climate change. It is false.
Alternative forms of energy tend to be more expensive than burning fossil fuels. It is true.
What is fossil fuel?
Fossil fuels has been result of the biological processes as heat and pressure from the Earth's crust that decomposed these organisms into one of the three main kinds of fuel and these are oil which is also called petroleum, natural gas, or coal.
The origin of the fossil fuels has the anaerobic decomposition of the buried lifeless organisms, that containing natural molecules is created through photosynthesis. The conversion from those materials to excessive-carbon fossil fuels commonly require a geological method of millions of years.
Biological methods are defined as the processes that are very crucial for an organism to live, as well as that shape its capacities for interacting with its surroundings. The organic processes has been made of many chemical reactions or the different events that use to concerned within the persistence as well as the transformation of lifestyles forms.
Therefore, Biological approaches either aerobic or the anaerobic which is based upon the environmental necessities of the microbial consortia.
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What is a Metamorphic Rock?
rock that forms when existing rock changes to a new rock because of heat and pressure
⊝
rock that forms by the process of compaction and cementation of sediments
⊝
rock that forms when melted rock (magma, lava) cools and hardens
⊝
pls help
Answer: A) rock that forms when existing rock changes to a new rock because of heat and pressure ..hope this helped!
Explanation:
Water that is trapped within the Earth is called
Answer:
ringwoodite
Explanation:
smarty
Answer:
I think, its ringwoodite
Name 2 ways that the Theory of evolution is currently being used to improve the quality of human life
Answer:
The answer to the question: Name two ways that the Theory of Evolution is currently being used to improve the quality of human life, would be: Through the development of evolutionary biology, and 2. Through the comprehension of how the systems of disease, and health, work.
Answer:
Through the development of evolutionary biology.And Through the comprehension of how the systems of disease, and health, work.
List the cell organelles involved in energy generation for the cell.
Answer:
Mitochondria are tiny organelles inside cells that are involved in releasing energy from food. This process is known as cellular respiration. It is for this reason that mitochondria are often referred to as the powerhouses of the cell.
What is the source of the carbon dioxide that is used in photosynthesis?
A. sunlight
B. the soil
C. the atmosphere
D. the plant
Answer:
A
Explanation:
Sunlight provides the energy needed for photosynthesis to take place.
How does the body protect itself from the majority of pathogens it encounters?
Answer:
In general, your body fights disease by keeping things out of your body that are foreign. Your primary defense against pathogenic germs are physical barriers like your skin. You also produce pathogen-destroying chemicals, like lysozyme, found on parts of your body without skin, including your tears and mucus membranes. In response to infection, your immune system springs into action. White blood cells, antibodies, and other mechanisms go to work to rid your body of the foreign invader. The immune system has a vital role: It protects your body from harmful substances, germs and cell changes that could make you ill. It is made up of various organs, cells and proteins.
Once infected cells have sensed an invading pathogen, they secrete molecules called cytokines and chemokines. These cells are then primed to resist an infection with the invading virus. Cytokines such as interferons activate anti-viral genes in the infected and neighbouring cells.
Microorganisms capable of causing disease—or pathogens—usually enter our bodies through the eyes, mouth, nose, or urogenital openings, or through wounds or bites that breach the skin barrier. Organisms can spread, or be transmitted, by several routes.
The second line of defense is nonspecific resistance that destroys invaders in a generalized way without targeting specific individuals: Phagocytic cells ingest and destroy all microbes that pass into body tissues. For example macrophages are cells derived from monocytes (a type of white blood cell).
If pathogens do manage to enter the body, the body's second line of defense attacks them. The second line of defense includes inflammation, phagocytosis, and fever.
Answer:
your skin protects itself because of all the oils on your glands .. but when you get a cut the while blood cells trap and eat them
Explanation:
what is the cell doing when it's not going through mitosis
PLEASE HELP I WILL GIVE BRAINALIST AND EXTRA POINTS
Answer:
Coal-fired power plants
Explanation:
Generally speaking coal-fired power plants emit more greenhouse gas, however both emit greenhouse gases in large quantities.
Suppose the light converged before reaching the back of the eye.
What lenses would be in the person's glasses to help them see? Explain
your choice.
Answer:
z
Explanation:
If the light converges before reaching the back of the eye, this means that the person is nearsighted and has trouble seeing objects that are far away. To correct nearsightedness, the lenses in the person's glasses would need to divert the light before it entered the eye. Therefore, the glasses would have concave lenses.
what are lenses?If the light converges before reaching the back of the eye, it means that the person is suffering from a refractive error known as myopia, or nearsightedness. To correct myopia, the lenses in the person's glasses should be concave, which means they are thicker at the edges and thinner in the center. Concave lenses are designed to diverge light rays, which helps shift the focal point of light farther back so that it falls directly on the retina. By doing so, the glasses help the eyes see distant objects more clearly.
Hence, if the light converges before reaching the back of the eye, this means that the person is nearsighted and has trouble seeing objects that are far away. To correct nearsightedness, the lenses in the person's glasses would need to divert the light before it entered the eye. Therefore, the glasses would have concave lenses.
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a farmer sprays his crops once a week with pesticides to kill beetles. he noticed that the pesticide he used last year is not killing the beetles this year . the beetles have evolved which strategies would best way to stop the evolution of pesticide resistant beetles?
which principle did you apply in step 2 in the Investigation
Answer:
Do not pre-judge
Investigation must be trained and experience will be applied in step 2 in the Investigation.
What are the steps of investigation ?Scientific investigation is a continuous process of investigation which involve different steps to get the answer of a question by using scientific method.
The basic steps includes Investigators must be as independent, must be trained and experienced, all relevant issues must be identified, sufficiently resourced.
All relevant physical and digital evidence must be identified, collected , stored and examined during experiment, documentation must be secured and reviewed, witnesses must be identified.
The analysis of all the results must be gathered during the investigation must be objective oriented and based solely on the facts.
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define cyclosis and plasmolysis
Answer:
Cyclosis- streaming of cytoplasm within a living cell without deformation of the external cell membrane. In some plant cells there is a rapid rotatory cytoplasmic movement, which is limited to the peripheral parts of the cell next to the cell wall; chloroplasts and granules move in this stream.
Plasmolysis is the process of shrinkage or contraction of the protoplasm of a plant cell as a result of loss of water from the cell. Plasmolysis is one of the results of osmosis and occurs very rarely in nature, but it happens in some extreme conditions.
Explanation: