Answer: plasma membrane
Explanation: an outer covering that separates the cell's interior from its surrounding environment.
Answer:
All cells share four common components: (1) a plasma membrane, an outer covering that separates the cell’s interior from its surrounding environment; (2) cytoplasm, consisting of a jelly-like region within the cell in which other cellular components are found; (3) DNA, the genetic material of the cell; and (4) ribosomes, particles that synthesize proteins. However, prokaryotes differ from eukaryotic cells in several ways.
Explanation:
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The first filial (F1) generation is the result of?
Answer:
F1 is the result of two cross-pollinated parent plants.
Explanation:
So basically, when you cross two true breeding parent plants, then the offspring is known as the F1 generation i believe.
A root cell may continue to absorb minerals even though the concentration of the minerals is greater inside the cell than in the soil. This absorption is accomplished mainly by —.
Answer:
Root hair cells
Explanation:
If the external environment of a living cell has a greater concentration of salt than the cytoplasm within the cell, the cell will tend to.
what is the cleansing process that removes organic material and reduces the number of microorganisms to a safe level?
Then cleansing process that removes organic material and reduces the number of microorganisms to a safe level is called Sanitization.
The purification procedure required by public health regulations to get rid of organic matter and bring the number of germs down to a safe level.
For restaurants and other facilities that make food, for instance, there are sanitizing procedures. Depending on your demands, the sanitizing procedure you use will change. You might be using a mop, a chemical, and water to clean a floor. Dishwashers can be used to sterilize the dishes. Or you might be wiping a TV remote with an antibacterial wipe.
Hence, proper sanitization is required during the spread of diseases like COVID 19 and thus, with the help of proper guidelines and sanitization disease spread can be prevented.
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match each theory to its best description.
gravitational instability theory,
core accretion theory,
gas and dust sticks to itself and collapses,
a core of rock and ice attracts gases
The match of the theory, its best description, is the following:
Gravitational instability theory – gas and dust stick to themselves and collapse.Core accretion theory- a core of rock and ice attracts gases.What is gravitational instability theory?Gravitational instability theory was postulated around a half-century ago. The theory states that if gas and dust collapse around the star, and it forms a disc shape, it will grow until it becomes a planet.
Core acceleration theory also explains the formation of the planet. It is a two-stage process.
Thus, the match is the following:
Gravitational instability theory – gas and dust stick to themselves and collapse.Core accretion theory- a core of rock and ice attracts gases.Learn more about gravitational instability theory, here:
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PLEASE HELPP A cells chromosome contains: A. Genes B. chlorophyll C. sperm D. Eggs
Answer:
A
Explanation:
genes
Helppp answer as soon as possible thank you❤️❤️
Answer:
b......one.........
Answer:
b i sur answer
my upper one is right
BRAINLIEST! oIF YOU DONT KNOW THE ANSWER DONT ANSWER AT ALL PLEASE! THIS NEEDS TO BE CORRECT OR I WILL LITERALLY HUNT YOU DOWN!!!
Answer:
dude how am I gonna answer
i can just place it for you dude.
Explanation:
Why does a pH of 5 produce high ATP synthase activity, but a pH of 3 and 9 very low ATP synthase activity?
Answer:
ATP synthase works best at a pH of 5, but changes in the pH of the medium can alter its enzymatic activity, decreasing it.
Explanation:
Enzymes are specialized proteins that contribute to biochemical reactions occurring faster, decreasing the activation energy.
Under ideal conditions of temperature and pH, enzymes can work at their maximum capacity, but changes in these conditions can affect the speed with which an enzyme acts.
ATP synthase, an important enzyme for ATP synthesis and oxidative phosphorylation, works best at a pH of 5 (weak acid), but as the acidity or alkalinity of the medium increases, enzymatic activity decreases.
6. Use the diagram below to answer the following question.
2
Which labeled viral structure in the diagram above stores viral DNA similarly to the way the nucleus
stores cellular DNA?
F. 3
G. 1
H. 4
J. 2.
explain one way that HYDROGEN GAS is commercially produced
Explanation:
There are a number of ways to produce hydrogen: Natural Gas Reforming/Gasification: Synthesis gas, a mixture of hydrogen, carbon monoxide, and a small amount of carbon dioxide, is created by reacting natural gas with high-temperature steam. The carbon monoxide is reacted with water to produce additional hydrogen.
As of 2020, the majority of hydrogen (∼95%) is produced from fossil fuels by steam reforming of natural gas, partial oxidation of methane, and coal gasification. Other methods of hydrogen production include biomass gasification and electrolysis of water.
What is the morula? And when does it develop?
Answer:
Morula: a solid ball of cells resulting from division of a fertilized ovum, and from which a blastula is formed.
When is it formed: In humans, the blastocyst is formed approximately five days after fertilization. This stage is preceded by the morula. The morula is a solid ball of about 16 undifferentiated, spherical cells.
tbh i don't really know when it's formed, but i looked it up and that's what it gave me. i hope it helped :)
Why do humans , bees , and flowers need glucose and not rocks ?
One of the most crucial chemicals in human biology is glucose, a six carbon aldose. Since glucose is a carbohydrate, it exists in a partially oxidized state and can give the cell a moderate amount of energy.
Because glucose is the primary catalyst for catabolism in all cells, it is significant. Since the cellular activities that comprise the complete TCA cycle and chemiosmosis rely mostly on glucose to supply energy, glucose is used to provide energy for cells. The products of each of the sequence of oxidations that glucose undergoes can effectively donate electrons, allowing them to be utilized for the process of oxidative phosphorylation to produce ATP.
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Greenhouse gases absorb solar radiation and rerelease it in the Earth's atmosphere. Based on this information, which of the
following sources within the agricultural sector has the most impact on global temperatures on Earth?
A. digestive processes of animals
B. agricultural soil management
C. fossil fuel consumption
D
manure management
Answer:c
Explanation:because it takes away carbon and greenhouse gases from long term carbon stores an releases it into the atmosphere at a short term rate through combustion
sophie rafain potentiate anti-cancer effects of doxorubicin and cisplatin and mitigate their toxic effects
Sulforaphane potentiate anti-cancer effects of doxorubicin and cisplatin and mitigate their toxic effects like heart problems and enhance their effectivity.
Doxorubicin and cisplatin are the drugs that are used to treat various types of cancer including breast cancer, lung cancer, bladder cancer, and ovarian cancer.
The are also associated with side-effects like heart problems, etc.
Sulforaphane is a sulphur rich substance found in green vegetables which is evident to have anti-cancer effects and helps in prevention and treatment of various types of cancer.
It causes the cancer cells to self destruct by the process of apoptosis.
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How has evolution shaped human memory? 20pts
Which of the following statements describes the structure of the plasma membrane?
a It is a lipid bilayer with the hydrophobic area pointing inward, and the hydrophilic area facing outward.
b Protein molecules make up the membrane, which makes it a strong structure.
c The plasma membrane is made mainly from carbohydrates that give the cell energy.
d It is made primarily of cholesterol that allows the cells to communicate with others.
Answer:
A. It is a lipid bilayer with the hydrophobic area pointing inward, and the hydrophilic area facing outward.
Explanation:
The plasma membrane (also known as the cell membrane) is a membrane that separates the cell's interior from the environment that surrounds it, protecting it. It consists of lipids, proteins, and carbohydrates.
Its main component are phospholipids that create a bilayer. Phospholipids consist of two hydrophobic tails and a hydrophilic head and are arranged so that the tails face inward and the heads outwards.
This is why option A is the correct one.
You can see an image of the cell membrane's structure to help you visualize this below:
People in a rural community share a forest. By agreement, each family can cut 10 trees per year for
personal use. One year, one person cuts 20 trees to build a shop that's nicer than the neighbor's shop. The
new shop flourishes, and despite the general disapproval, nothing is done to punish the cheater. The
neighbor, seeing this, decides that it's okay to go ahead and take 25 trees. Other neighbors follow suit. After
a few years, the forest plot is gone, and everybody must travel much farther for wood. What's this an
example of?
O A Natural Law of the Land
OB. Tragedy of the Commons
OC. Voluntary approach to environmental policy
O D. Conservation Property RightS
Answer: B : Tragedy of the commons
Explanation:
Since the forest plot has been depleted (gone) and everybody must travel much farther for wood, this is an example of: B. Tragedy of the Commons.
What is Tragedy of the Commons?Tragedy of the Commons can be defined as an economic situation in which individuals with access to a shared (common pool) resource act in their own selfish interest while retroactively depleting this resource.
This ultimately implies that, it is an economic problem of overconsumption by individuals sharing a common resource and it eventually leads to the depletion of the resource.
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What are the similarities and differences between the two karyotypes?
Answer:
The typical human karyotypes contain 22 pairs of autosomal chromosomes and one pair of sex chromosomes (allosomes). The most common karyotypes for females contain two X chromosomes and are denoted 46,XX; males usually have both an X and a Y chromosome denoted 46,XY.
Explanation:
The diagram shown represents a cell that will undergo mitosis. Which diagrams below best illustrate the nuclei of the daughter cells that result from a normal mitotic cell division of the parent cell shown?
Diagram A best illustrates the nuclei of the daughter cells that result from a normal mitotic cell division.
Mitosis is a type of cell division by which a parental cell divides to produce two genetically identical daughter cells.In this case, the parental cell has three homo-logous pairs of chromosomes, thereby both daughter cells will also have three pairs of homo-logous chromosomes-Somatic (body) cells reproduce by mitosis, while germinal cells reproduce by meiosis.In conclusion, diagram A best illustrates the nuclei of the daughter cells that result from a normal mitotic cell division.
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A population of ducks lives in an area that floods many times each year. Some of the ducks are better at finding food on dry land, while other ducks are better at finding food in wet, muddy areas. Eventually, the land around the lake permanently changes from dry soil to wet, marshy mud.
How will this change to the land most likely affect the duck population?
The population will remain stable because the ducks will not be affected by this kind of change.
The population will eventually balance out so that there are equal numbers of both types of ducks.
The population will evolve so that most ducks survive no matter how they find food.
The population will evolve so that most ducks are better at finding food in wet, muddy areas.
Answer:
D. A duck flies to another pond.
The above sentence is an example of emigration. Emigration refers to moving from one area to another for a long or permanent period. In this instance, a duck is leaving the pond it originally resided in (along a population other ducks) in order to reside in another pond. Therefore, it can be said that the duck "emigrated".
Explanation:
The answer is C
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brainlest please
Why do you think there were so many heated debates around the development of the cell theory?.
The debates around the development of the cell theory are fueled by the fact that yet there is no conclusive evidence about how the cell emerged in the geological past, thereby increasing the arrival of diverse theories.
What is the cell theory?The cell theory is a well-accepted scientific model that state all organisms are composed of one or more than one cell (the functional unit of all biological systems), which has been proved by empirical evidence.
The debates around this theory (the cell theory) are fueled by the fact that there is not conclusive evidence about the origin of the first primitive cells.
In conclusion, the debates around the development of the cell theory are fueled by the fact that yet there is no conclusive evidence about how the cell emerged in the geological past, thereby increasing the arrival of diverse theories.
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p16(ink4a) and senescence- associated β- galactosidase can be induced in macrophages as part of a reversible response to physiological stimuli.
p16 (ink 4a) and senescence-associated with Beta-galactosidase are introduced by macrophages.
What are p16 (ink4a) cells?p16 cells are low molecular weight proteins bound by cyclin-dependent kinase. It is a protein that cell slows cell division. Cellular senescence suppresses cancer by preventing and proliferation of cells.
p16 and Inka 4 cells encoded by cyclin-dependent cells. It is also induced as aging which induces cellular senescence in response to stress.
p16 is a member of ink4a cells. It is a cyclin-dependent kinase inhibitor that plays a critical role in cell cycle regulation. It is expressed in both the nucleus and cytoplasm. p16 is a common biomarker for aging.
Therefore, p16 (ink 4a) and senescence-associated with Beta-galactosidase are introduced by macrophages.
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Sound travels faster at higher temperatures
true false
Answer:
True
Explanation:
Temperature is another condition that affects the speed of sound. Heat, like sound, is a form of kinetic energy. Molecules at higher temperatures have more energy and can vibrate faster and allow sound waves to travel more quickly.
Therefore, sound travels faster at higher temperatures and slower at lower temperatures.
What is pushing apart North America and Eurasia?
Answer:
The North American and Eurasian Plates are moving away from each other along the line of the Mid Atlantic Ridge. The Ridge extends into the South Atlantic Ocean between the South American and African Plates.
When population growth increases in an area, what is happening to the birth rate and age structure of that population?
a. increasing birth rate with a greater number of young organisms
b. increasing birth rate with a smaller number of old organisms
C. increasing birth rate with a smaller number of young organisms
d. increasing birth rate with a greater number of old organisms
Please select the best answer from the choices provided
A
OC
D
Save and Exit
Submit
Mark this and retun
Answer:
a
Explanation:
the increase in birth rate means more young organisms are born => greater number of young organisms
Why are elliptical galaxies important??
Answer:
Elliptical galaxies are the most abundant type of galaxies found in the universe but because of their age and dim qualities, they're frequently outshone by younger, brighter collections of stars. Elliptical galaxies lack the swirling arms of their more well-known siblings, spiral galaxies.
Explanation:
Answer:
Astronomers have identified and named more of the spiral galaxies because their swirling arms and brightness make them easier to spot. Elliptical galaxies are older and give off less light than other galaxies. They also have less dust and gas in them, so they don't form many new stars.
Explanation:
A sun and plant. An arrow pointing to the leaf is labeled A. The sun rays are labeled B. Arrows pointing away from the leaves are labeled C. A substance on the leaf is labeled D. Arrows from the ground entering the plant are labeled E. Which labels would correctly model photosynthesis?
Answer:
When the arrow is risen as the sun rays also because the shift of day to night
Explanation:
Plant
A particle of a compound is called what?
the study of chemical reactions, such as growth, reproduction and respiration, that occur within a living organism is called:
Answer: Chemistry
Explanation:
diffusion is the movement of molecules from....
an area of high concentration to an area of low concentration
an area of low concentration to an area of high concentration
an area of equilibrium to an area of high concentration
Answer:
an area of high concentration to an area of low concentratioN