Explanation:
During the Age of Sail, it was assumed that 50 percent of the sailors would die of scurvy on a major trip. A Scottish surgeon in the Royal Navy, James Lind, is generally credited with proving that scurvy can be successfully treated with citrus fruit in 1753.
Answer:
in 1747 by James Lind ......
according to the fossil record, how long ago do scientists believe life on earth first appeared?
Answer:
The earliest life forms we know of were microscopic organisms (microbes) that left signals of their presence in rocks about 3.7 billion years old.
Explanation:
how does a cell get energy from an atp molecule
Answer:
Whenever a cell needs energy, it breaks the beta-gamma phosphate bond to create adenosine diphosphate (ADP) and a free phosphate molecule. Cells get energy in the form of ATP through a process called respiration, a series of chemical reactions oxidizing six-carbon glucose to form carbon dioxide.
Hope that Helps...
Matter that is made of only one kind of atom is called what?
Atom
Compound
Element
Molecule
are there other tests that could be used to determine if cyclohexanol is present in your product? give at least one test with some detail of the expected result for the presence of cyclohexanol.
One of the many tests that may be used to identify the presence of cyclohexanol in a product is that of the Lucas test.
The Lucas test is a chemical reactant test to determine the presence and level of alcoholism in a solution. Cyclohexanol has many chemical properties as do most substances, one of which is the presence of an alcohol group.
The presence of this chemical group makes it possible to test for cyclohexanol using the Lucas test. The Lucas test will cause reactions in the presence of alcohol and transform alcohols into chloroalkanes, which tend to be nearly insoluble in aquatic solutions. Given this, a positive result will look like the solution separates into a cloudy chloroalkane-containing part on top of a much clearer layer.
To learn more visit:
https://brainly.com/question/7141113?referrer=searchResults
in which structure would you expect to find a chloroplast?
Answer:
in plant cells and eukaryotic algae
Explanation:
a human red blood cell is placed in a solution whose solute concentration is twice as great as the concentration of the cell cytoplasm. The cell membrane is selectively permeable allowing water but not the solutes to pass through. What will happen to the cell? a.) No change b.) the cell will shrivel because of osmosis c.) the cell will swell because of osmosis d.) the cell will shrivel because of active transport of water e.) the cell will swell because of active transport of water
Answer:
the cell will shrivel because of osmosis, moving to the region of higher concentration, and it shrivels due lost of water
in addition to the frog, what other organisms are classified as modern amphibians?
Answer:
1.Toad
2.Newt
3.Salamander
In addition to the frog, the other organisms that are classified as modern amphibians are toads and salamanders. Therefore, the correct option is A.
What are modern amphibians?Modern amphibians are a class of cold-blooded vertebrates that spend part of their life cycle in water and part on land. They are united under the taxon Lissamphibia. They are divided into three clades which are Urodela, Anura and Apoda. In addition to frogs, the other two groups of modern amphibians are toads and salamanders.
Snakes and lizards are reptiles, which are a different class of cold-blooded vertebrates. Opossums and koalas are marsupials, which are warm-blooded mammals, and sharks and skates are fish, which are cold-blooded vertebrates but are not classified as amphibians. Therefore, the correct option is A.
Learn more about amphibians, here:
https://brainly.com/question/30037800
#SPJ6
The question is incomplete, but most probably the complete question is,
In addition to the frog, what other organisms are classified as modern amphibians?
A. toads, salamanders
B. snakes, lizards
C. opossums, koala
D. sharks, skates
Which factor does not affect photosynthesis?
Answer:
Wind velocity doesn't affect the photosynthesis. Unlike light intensity, CO2 concentration, and temperature which are the major factors influencing the rate of photosynthesis, the wind has no effect on the reactions and the rate of reactions going in the chloroplast of the leaves of the plant.
as of may 2020, carbon dioxide levels have reached 417 parts per million. what level should they be at to have the world in a climate similar to that in which civilization first developed?
Given what we know about global carbon levels in the present and the past, we can confirm that in order to be at the level of early civilizations, the modern-day carbon level should be at 280 parts per million.
Global atmospheric carbon levels are measured in parts per million. What this means is that for every one million units of mass in the atmosphere, 280 of them were carbon. This means that in recent years, the global carbon levels in the atmosphere have doubled.
The primary cause of these increased carbon levels is industrial pollution. Chemicals are released into the atmosphere as a by-product of industrial processess. This began with a noticeable spike during the industrial revolution and has then increased without end.
To learn more visit:
https://brainly.com/question/24882963?referrer=searchResults
why are antibiotics not effective against viruses?
Answer:
Viruses are different to bacteria; they have a different structure and a different way of surviving. Viruses don't have cell walls that can be attacked by antibiotics; instead they are surrounded by a protective protein coat. Antibiotics do not work on viruses, such as those that cause colds, flu, bronchitis, or runny noses, even if the mucus is thick, yellow, or green. Antibiotics are only needed for treating certain infections caused by bacteria, but even some bacterial infections get better without antibiotics.
Mountains can be formed when one plate is forced under another. The plate on top folds up like an accordion and forms mountains. The plate forced under usually melts. What event is most likely to occur after much of the plate forced under has melted?
A.a flood B.a tsunami C.a volcano eruption D.an avalanche
Answer:
C. Volcanic Eruption is the answer
One way that antibiotics can treat bacterial disease without harming human cells is by:
food, water, shelter, and warmth represent ________ needs in maslow’s hierarchy of needs.
Food, water, shelter, and warmth represent physiological needs in Maslow’s hierarchy of needs.
Abraham Maslow proposed and developed a theory in human development psychology titled "A theory of human motivation" in 1943.
Maslow's Hierarchy of Needs can be defined as a pyramid model which typically represents the fundamental (basic) needs of an individual, that are essential and required to be met before he or she can achieve complete growth, development and self-actualization.
The five (5) levels of Maslow's Hierarchy of Needs in a chronological order are;
Physiological.Safety.Belonging and love.Social needs or esteem.Self-actualization.According to Abraham Maslow the psychological needs comprises:
I. Food.
II. Water.
III. Shelter.
IV. Warmth.
Read more: https://brainly.com/question/18238010
how do mitochondria generate and store the energy used to produce most of the atp made during aerobic respiration
Answer:
The citric acid or Krebs cycle processes in the matrix of mitochondria produce a molecule called NADH. NADH is then converted to adenosine triphosphate by enzymes buried in the mitochondrial inner membrane (ATP). Energy is stored in the form of chemical bonds in ATP.
Explanation:
During aerobic respiration, how is ATP created in the mitochondria?Oxidative phosphorylation produces the majority of the ATP produced by aerobic cellular respiration. By pumping protons across a membrane, the energy released by the O2 is utilized to create a chemiosmotic potential. This potential is subsequently used to activate ATP synthase, which converts ADP and phosphate groups into ATP.
What is the mechanism by which mitochondria store energy?Mitochondria (plural: mitochondrion) are membrane-bound cell organelles that provide the majority of the chemical energy required to fuel the cell's metabolic activities. Adenosine triphosphate is a tiny molecule that stores chemical energy created by mitochondria (ATP).
What is ATP's energy storage mechanism?The energy currency of the cell is ATP, or adenosine triphosphate. It retains the energy created during cellular respiration when glucose is oxidized. Energy is stored in the form of high-energy phosphate bonds, which are broken to release energy. Energy is released when ATP is broken down into ADP and Pi.
Learn more about Mitochondria here-
https://brainly.com/question/22572893
#SPJ2
describe the negative impacts to an ecosystem of large-scale monocultures of crop
plants and of intensive livestock production
Answer:
CHECK THIS LINK YOUR QUESTION WILL BE ANSWERED.
https://www.goconqr.com/mindmap/4978927/negative-impacts-on-an-ecosystem-of-large-scale-monocultures-of-crop-plants
Explanation:
Raul is learning about fetal development, but is confused about the role mitosis plays in the fetus growing. In 3-5 sentences explain what mitosis does in fetal development. Include how the same DNA is in every cell, and how the fetus grows in size.
Answer:
Most of the fetus will be born in the 40 weeks of pregnancy, but really can accurately only about 5% of babies born in due two weeks in advance or delay two weeks are normal.
Explanation:
how does an autoimmune disease affect the muscular system?
Answer:
Explanation:
Myositis (my-o-SY-tis) is a rare type of autoimmune disease that inflames and weakens muscle fibers. Autoimmune diseases occur when the body's own immune system attacks itself. In the case of myositis, the immune system attacks healthy muscle tissue, which results in inflammation, swelling, pain, and eventual weakness.
without rain animals would not survive
Answer:
Without rain, there would more than likely be no collection of water for animals to drink such as ponds, lakes, rivers, etc. Rain, in addition to providing these animals with water to drink, also provides them with their natural habitats such as fish, mosquitoes, and other water creatures. Without rain, animals would merely perish, and soon, humans would as well.
Explanation:
please help, thank you!
Answer:
regulates which materials enter and leave the cell
how can we improve hydraulicity of lime?
Answer:
Hydraulicity and setting properties of fat lime can be improved by the addition of surkhi and grinding the mixture in a mortar-mill.
Explanation:
2. Reproduction is the function of both_____and organisms.
Answer:
it's plants pls brainliesttt
Answer:
2. Reproduction is the function of both__Meiosis___and organisms.
Which of the following is another name for ova?
Answer:
d. All of the above
Explanation:is correct. post protected
Answer:
All of them are the same word
You are examining a human blood smear under the microscope and note a large cell with a bilobed nucleus and orange-red granules in the cytoplasm. Identify the cell.
If you accidently break lab equipment (beakers, test tube etc) what is the
first thing you need to do?
Answer:
You need to notify your teacher immediately.
Explanation:
The broken glass or shards of plastic can cut or injure someone.
Do all cells (brain cells, skin cells, liver cells, etc) express the genes or make the same proteins
Answer:
yes
Explanation:
have a good day or night
What is the surgery that involves trimming excess prostate tissue in order to treat urinary problems that are caused by an enlarged prostate?
Answer:
d. TURP is correct
Explanation: Transurethral resection of the prostate
if the carrying capacity for the north atlantic cod on the grand banks of newfoundland is 500,000 tons, when do you expect that the rate of population growth would be greatest?
If the carrying capacity for the North Atlantic cod on the newfound land is 500,000 tons, then we would expect that when there are 250,000 tons of cod on the grand banks, the population growth will be greatest.
The carrying capacity speaks volumes about the maximum amount of a species population that the ecosystem can sustain permanently provided there is the availability of water, food, habitat, and other life essentials.
In terms of population ecology, it is defined as the maximum burden that the environment can tolerate.
In population ecology, populations normally decrease above the carrying capacity while they increase below the carrying capacity. A decline in population size above the carrying capacity can be caused by a variety of factors, such as a lack of sunshine, space, or food availability.
Therefore, we can conclude that If the carrying capacity for the North Atlantic cod on the newfound land is 500,000 tons, the rate of population increase will be maximum and greatest when there are 250,000 tons of cod on the Grand Banks.
Learn more about carrying capacity here:
https://brainly.com/question/2375972?referrer=searchResults
What first caused people to consider that the continents were once one large landmass?
glacier evidence in warmer countries
continents looked like they fit together
studying the valleys of the ocean floor
similar fossils were found on many continents
Answer:
Continents looked like they fit together. Which continents contain fossils of Mesosaurus, an extinct reptile, in similar regions of Pangaea?
Answer:
B
Explanation:
If you see a bird flying toward you this information is most likely processed in the: a. avian lobe b. temporal lobe c. occipital lobe d. limbic system
If you see a bird flying toward you this information is most likely processed in the occipital lobe.
What is occipital lobe?Occipital lobe lies at the back of the brain and is responsible for the vision, colour and motion of an object. It also helps in memorizing the shape, structure or face of an object.
The occipital lobe is situated in the cerebrum part of the brain between the parietal and temporal bone.
To know more about occipital lobe here
brainly.com/question/5497761
#SPJ2
Which of the following is the BEST description of osmosis?
A.) as active transport
B.) as requiring a transport protein
C.) as an example of facilitated diffusion
D.) as diffusion of water through a selectively permeable membrane
Answer:
D
Explanation:
Osmosis is the diffusion of water through a selectively permeable membrane.