Answer:
B
Explanation:
What are the pieces of evidence that the author uses to support his main ideas?
Should we as a country celebrate the Fourth of July in the United States, or is it, as Frederick Douglass claimed, a "sham" to black people in the United States? Discuss your opinion and explain, using personal examples
Answer:
Jul 3, 2019, The History of Frederick Douglass' Searing Independence Day Oration. So while the U.S. tends to go all out celebrating freedom on the Fourth of July, independence on July 4 are a reminder of the country's hypocrisy on the matter and bloody than are the people of the United States, at this very hour.
Explanation:
Need help quiz is here and this is the only answer I don’t know
Answer:
activation energy is the answer
What does a high population density indicate?
O The area is being overfished.
O The species is likely to face extinction.
O There is no other place for that species to live.
O Food supply is high and the number of predators low.
Answer:
O Food supply is high and the number of predators low.
Explanation:
Population density is defined as the population living in per square mile/km.
High population density indicate that the people living in an area have high food supply and the number of predators low. Predators are responsible to control the population but due to high food supply and low predators, there will be no control in the population and no control in the feeding behavior of the population that leads to High population density.
Hence, the correct option is "Food supply is high and the number of predators low."
Answer:
D; Food supply is high and the number of predators low.
Explanation:
what is the function of the fatty acid tails?
Answer:
Phospholipids are able to form cell membranes because the phosphate group head is hydrophilic (water-loving) while the fatty acid tails are hydrophobic (water-hating).
Explanation:
The main components of the plasma membrane contain hydrophobic and hydrophilic regions that give the membrane selective permeability. Which of the following is the
main component that creates the hydrophobic and hydrophilic regions? (3 points)
a. Cholesterol molecules creating membrane fluidity
b. Carbohydrates for cell recognition
c. Glycolipids containing hydrophobic lipid portion
d. Phospholipids containing hydrophobic fatty acids tails
Answer:
The main components that creates the hydrophobic and hydrophilic regions of the plasma membrane are phospholipids containing hydrophobic fatty acids tails.
Explanation:
Phospholipids are the main component of the cell membrane —lipid bilayer— and responsible for its selective permeability. Each phospholipid is composed of one glycerol molecule, which forms the head, and two fatty acid tails, plus one phosphate molecule.
In the lipid bilayer, the phospholipid heads are oriented towards the surface, while the tails are located inside, allowing interaction with both polar and apolar molecules.
The hydrophilic regions of the membranes are in contact with the liquids of the extracellular and intracellular spaces, while the hydrophobic region is inside the membrane, limiting the passage of polar molecules or ions.
The other options are not correct because:
a. Cholesterol molecules are part of the membrane, but are not responsible for the hydrophobic and hydrophilic regions.
b. Carbohydrates for cell recognition do not determine membrane permeability.
c. Glycolipids, like integral proteins, are part of the membrane, but do not determine the polarity of the regions.
Which best describes the cell theory?
Scientists know all there is to know about cells, so the cell theory will not change.
As technological advancements are made, the cell theory may change.
A theory, once formulated, cannot be changed.
The development of a synthetic cell has caused the cell theory to change.
Answer:
2.
Explanation:
Answer:
As technological advancements are made, the cell theory may change.
Explanation:
i did the test tell me if im wrong
NEED HELP QUICK
what differentiates passive transport from active
(Answer choices in picture)
Answer:
I would say ATP is needed for active transport to occur
what is the process of transferring sea water to fresh water?
Answer:
Desalination
Explanation:
desalination is a technique where the excess salt are removed from salt water or brackish water.
Are Viruses Alive? Venn Diagram
Directions: Use the word bank provided to complete the Venn diagram below. Then complete the exercise
below.
Word Bank
Capsid
Cell Membrane
Nucleus
Evolve
RNA
Cell organelles
Envelope
Heredity
Homeostasis
DNA
Ribosomes
Develop
Cell
Virus
Answer:
Viruses are not alive
Explanation:
Viruses are acellular structures capable of performing some biological functions.
What are viruses?Viruses are parasitic structures made of an outer protein capsid and genetic material which are able to replicate in a living cell and thus cause infection in the cell.
Viruses hijack the replicative machinery of the host to produce copies of its own genetic material. A single infected cell is capable of producing thousands of viruses.
The virus only injects the nucleic acid inside the target cell, the envelope and capsid are left outside. The hijacked genetic machinery of the host produces further copies of the nucleic acid, capsid and envelope.
These structures are assembled to give rise to new viruses.
If a large number of viruses are synthesized rapidly, it results in cell lysis. This type of infection is called the lytic cycle.
If the virus genome incorporates with the host genome, it is present there silently and being replicated. Upon receiving an activation signal lytic cycle is activated. It is called the lysogenic cycle
Therefore, viruses are acellular structures capable of performing some biological functions.
Read more about viruses, here
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Help pls help pls question is above
Answer:
A
Explanation:
Answer:
A. Vitamins seem to cause an increase in ink production
Explanation:
Because the experimental group, the one given vitamins, produces more ink than the control group, no vitamins.
Differentiate the 2 types of Natural Resources.
Answer:
They are....
Explanation:
Biotic and Abiotic --->
*Biotic is all living things such as plants, and animals
*Abiotic is all Non- living things such as water, glass, oil, etc
Hope this helps!
The two types of natural resources are biotic and abiotic. Biotic resources are ones derived of organic origins, or may be grown, that are gathered from the biosphere. Abiotic resources are nonliving resources, like metals, water, or oil.
I hope this answers your question! Happy learning, friend :)
What conditions would you look for
if you were looking for life on moons or other
planets besides Earth?
!!EASY ANSWER PLEASE!!
Answer:
You would look for water air living life forms and suitable places to live on the planet you would also look for oxygen so living life forms can breath, and lastly see if you can grow food or if food can stay on that planet.
Explanation:
This is how a life forms stays alive
what is a membrane potential and how is it generated?
Answer:
Differences in the concentrations of ions on opposite sides of a cellular membrane lead to a voltage called the membrane potential. Typical values of membrane potential are in the range –40 mV to –70 mV. ... These concentration gradients provide the potential energy to drive the formation of the membrane potential.
Explanation:
Please mark me the brainliest
How do I write a hypothesis in "If...then..." format?
Research question: "What vegetation type supports the highest abundance of life"
My answer is the savannah/woodland
Answer:
If I were you, I would make my hypothesis something like:
"If the vegetation type is a savannah/woodland, then it will support the highest abundance of life."
Explanation:
I know that hypothesis can be tricky to write at first, but if you turn the research question into a sentence, then you can write your hypothesis. Best of luck with your experiment.
Hope this helps! Feel free to give me Brainliest if you feel this helped. :)
Including Alaska and Hawaii, which additional biomes are found in the United States?
Answer:
Temperate grassland, desert, temperate woodland, and shrubland, northwestern coniferous forest and temperate forest.
Explanation:
Answer:Temperate grassland, desert, temperate woodland, and shrubland, northwestern coniferous forest and temperate forest.
Explanation:
What is the three letter code found in mRNA?
A. Thymine
B. Cytosine
C. Codon
D. Anti-codon
Answer:
D
Explanation:
How does the ratio of H to O atoms in starch compare with the ratio in double sugars?
Answer:
The answer is "2:1".
Explanation:
The formula of the Starch is = [tex](C_6H_{10}O_5)n[/tex]
The ratio of Hydrogen (H) and oxygen (O) is= 2:1.
The ratio of Hydrogen (H) and oxygen (O) in all carbohydrates (starch and sugar included) are 2:1.
What acceleration would be produced if a 25 N force acts on a 5.0 kg mass? (a = F/m) *
Answer:
5 m/s
Explanation:
Using the formula, the force is 25 N, and the mass is 5 kg.
Simply divide 25/5.0
Then, you would get 5 m/s
I hope this helps.
I need help with this
Answer:
So...
Explanation:
As well as carbohydrates, lipids also contain carbon, hydrogen and oxygen (since they have a hydrocarbon chain and glycerol backbone)
Proteins can also contain nitrogen atoms (amino acids); proteins also have an 'R' group; proteins also are folded structures
The nitrogen, phosphate groups, carbon rings are component phospho(lipids)
Lipids also have fatty acid chains and glycerol
Hope that helps! x
A large bar of solid gold is melted into liquid. The liquid is then poured into
molds to make a number of gold coins. Was this a chemical or physical
change? Explain.
Chemical, because the gold turned into something new and is no longer gold.
Physical, because the gold changed size and shape, but is still gold.
Answer:
It is physical, the gold is still gold and there has not been any chemical change. Melting, boiling, freezing, etc. are physical changes.
Question 10 of 10 Which molecule is used up in photosynthesis?
A. Carbon dioxide
B. Sugar
C. Oxygen
D. Nitrogen
Answer:
A Carbon Dioxide ( CO2)
Explanation:
During the process of photosynthesis, cells use carbon dioxide and energy from the Sun to make sugar molecules and oxygen. ... Then, via respiration processes, cells use oxygen and glucose to synthesize energy-rich carrier molecules, such as ATP, and carbon dioxide is produced as a waste product.
What phrase best describes the process shown
it best describes about this is what it is called and where it should go next
Are most environmental issues local problems or global problems?
How can or will this affect the way we try to solve these issues?
How are environmental issues becoming more complex?
What about the history of environmental studies can inform us about our current environmental issues? Why is it important to understand the past to help solve current and future environmental problems?
Answer:
Most environmental issues are problems on a global scale, these include but are not limited to, global warming, ozone pollution, greenhouse gases and many more issues.
This affects the way we try to solve these issues because if we dont all play a part to help change the way things are going, then they will only get worse. We have to come together as a whole.
Unlike individual efforts, different countries can cooperate and implement legislation which limitates all the countries in the globe,solving environmental issue more efficiently.
Fill in the blank.
Most earthquakes take place along tectonic plate _____________.
Answer:
Most earthquakes take place along tectonic plate edges and along faults.
What is agricultural monoculture and why is that bad for crops?
In the diagram, which represents a catalyst?
Answer:
where is the diagram???
Answer:
This is the diagram to the question
Explanation:
Jasmine and Marcus are at the park, and Jasmine makes the following statements. Which of them is an inference?
O The leaves are green.
O The flowers are breathtaking.
O The plant is producing oxygen.
The bush has thorns.
What is the main function of glycolysis in cellular respiration?
O A. To make water molecules
B. To make glucose molecules
C. To breakdown water molecules
D. To breakdown glucose molecules
Answer:
The answer is B. To make glucose molecules
if scientists want to solve an environmental problem they are most likely to use ?
Answer:
Technology
Explanation:
9.. Water enters the atmosphere as water vapor when liquid water ______
on Earth's surface. (12 points!!) i will give a brainliest and a like. please reply fast!!)