The correct answer is the cell membrane because it is the second last semi-permeable layer of the cell.
What is the function of cell membrane?The cell membrane is a semi-permeable barrier that is responsible for allowing molecules across the cell when it is needed by the cell.
So we can conclude that The correct answer is the cell membrane because it is the second last semi-permeable layer of the cell.
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The cell membrane allows the transportation of materials in and out of plant cells, although the cell wall is also key for these processes.
What is the cell wall?The cell wall is a rigid structure located outside the plant cell that protect it against friction and osmotic stress.
The cell wall is also required to transport substances in and out of the plant cell by pores present in this structure.
Moreover, the cell membrane is a physical barrier that allows the interchange of nutrients and waste materials between the cell and its surrounding environment.
In conclusion, the cell membrane allows the transportation of materials in and out of plant cells, although the cell wall is also key for these processes.
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What process creates mRNA?
What occurs during the mitosis stage of the cell cycle?
Answer:
The dna Seprates into two
Explanation:
also the cytoplasm divdes causing it to create two whole new cells
Runoff from a uranium mine stockpile has contaminated the surface water in a location. This might cause health problems among people in the location. Which of these is the best plan to solve this problem? (4 points)
Plant trees around uranium mines to absorb contaminants.
Put fences around uranium mines to check the flow of contaminants.
Wear protective clothing for prevention against harmful effects of radiation.
Collect the runoffs in retention ponds for isolation and recovery of contaminants.
The best best plan to solve the problem of contamination in the surface water is to collect the runoffs in retention ponds for isolation and recovery of contaminants.
What is surface runoff?Surface runoff is an overland flow of excess water (with or without accumulated contaminants) that cannot be absorbed by the ground as infiltration.
According to this question, runoff from a uranium mine stockpile has contaminated the surface water in a location. This might cause health problems among people in that region.
However, one way to curb the problem of contamination in the surface water is to collect the runoffs in retention ponds for isolation and recovery of contaminants.
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As increased global population beneficial or harmful for the climate????
The grants witnessed strong selection during droughts in 1977 and 1985. compare the two droughts.select all that apply.select all that apply.in both droughts, large-beaked medium ground finches had the highest survival rates.in both droughts, small-beaked medium ground finches had the highest survival rates.both droughts resulted in changes to food sources that favored the survival of some medium ground finches over others.both droughts events provided strong natural selection on medium ground finch populations.
Both droughts resulted in strong natural selection on medium ground finch populations and both droughts resulted in alteration to available food, which favored the survival of some medium ground finches over others. Thus, the correct option is A and B.
What is natural selection?Natural selection is a natural process in which organisms that are more adapted to their environment survive and reproduce more than those that are not.
Darwin's Finches' beaks were picked for their beneficial adaptations over generations until they all branched off to become new species. These birds have distinct beaks than mainland finches, although being almost identical in every other way.
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Describe the structure and the function of the stomach. Be sure to include cells and tissues relating to this organ.
Connective tissues support the tissues of the mucosa and connect it to the muscularis layer.
The blood supply of the submucosa provides nutrients to the wall of the stomach. Nervous tissue in the submucosa monitors the contents of the stomach and controls smooth muscle contraction and secretion of digestive substances.
What is the function of the stomach?The stomach secretes acid and enzymes that digest food. Ridges of muscle tissue called rugae line the stomach.
The stomach muscles contract periodically, churning food to enhance digestion. The pyloric sphincter is a muscular valve that opens to allow food to pass from the stomach to the small intestine.
Thus, this could be the answer.
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If+the+atmosphere+is+78%+n2,+why+can't+we+just+get+our+nitrogen+by+breathing?
Nitrogen is present in the environment in abundance but still we cant inhale nitrogen
What is the role of nitrogen in our body?
Nitrogen is physiologically inert. It contributes nothing to the functioning of our bodies. The cells in our body need oxygen to live, not nitrogen. we can find nitrogen in our body in form of nitrogeneous base in nucleotide.
We inhale all gases present in air fills our alveoli, by the process of diffusion, only oxygen in the air is taken into the blood stream while the other gases along with the waste CO2 is exhaled. So you do breathe in nitrogen, but it is exhaled as it is by the body.
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Autopsy results from people who have died of fatal familial insomnia show evidence of degeneration in the
According to the research, autopsy results from people who have died of fatal familial insomnia show evidence of degeneration in the thalamus.
What is fatal familial insomnia?It is an autosomal hereditary disease that prevents falling asleep, that is, it is an absolute inability to fall asleep or to do so in an extremely superficial way.
Its onset is abrupt and continues to progress until it causes the death of the patient and its main neuropathological manifestation is degeneration of the thalamus, which is responsible for sleep.
Therefore, we can conclude that according to the research, autopsy results from people who have died of fatal familial insomnia show evidence of degeneration in the thalamus.
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How would you explain Darwin's mechanism for evolution called "natural selection"?
Cross Tt x Tt what is the excepted ratio of tall to short plants?
Here is the answer...hope it helps:)
Lidocaine is an anesthetic that is used to prevent the propagation of action potentials. Which compartment would lidocaine MOST likely target
Why are plants called producers
Answer:
they make there own good which creates energy for them to survive, grow and reproduce
Which of the following best describes the contributions of Robert Remak to our understanding of cells?
*
a. developed the first compound microscope to view cells
b. observed the first prokaryotic cells in pond water
c. coined the term "cell" when looking at cork under the microscope
d. obeserved cell division under the microscope proving cells come from other cells
Answer:
a)A dutch father-son team named hans zacharias janssen invented the first so called compound microscope in late 16th century when they discoveted that if they put a lens at the top and bottom of a tube and looked throught lit , objects on the other and became magnified
b) leeuwenhoek the first prokaryotic cells in pond water
Uranus was originally thought to be the star Sagittarius A*.
True
False
Answer:
I think it's true
Explanation:
I'm so sorry if that's wrong
Describe 2 causes of variation in humans
The two main causes of variation are "mutation" and "genetic recombination".
A mutation is a change in the DNA sequence of an organism. Mutations can result from errors in DNA replication during cell division, exposure to mutagens or a viral infection.
Genetic recombination refers to the rearrangement of DNA sequences by the breakage and rejoining of chromosomes or chromosome segments.
Answer:
The two main causes of variation are mutation and genetic recombination in se.xual reproduction.
Explanation:
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In which biome would you likely find primarily evergreens, such as pine, fir, and spruce?
Fruits grown in hot climates are usually less sweet than those grown in cooler temperatures
Increased respiration in the leaves and stems reduce the sugar content in the fruits of a plant because sugars produced in the leaves are used as an energy source instead of being stored in fruits.
What is fruit?
A fruit is a mature, ripened ovary, along with the contents of the ovary. The ovary is the ovule-bearing reproductive structure in the plant flower.
Cellular respiration is the process wherein nutrients (glucose) are oxidized into carbon dioxide and water with release of lots of energy. The released energy is stored in form of ATP which serves as energy currency for cells. Since high temperatures increase the rate of respiration in the plants, sugars produced in the leaves are used as an energy source instead of being stored in fruits.
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A student mixes various molecules needed for DNA replication. When he adds DNA, replication occurs, but each DNA duplex consists of a normal DNA strand paired with numerous segments of DNA that are a few hundred nucleotides long. What has been left out of the mixture
Answer: DNA Ligase
Explanation:
During DNA replication, both the parental DNA strands are separated and act as templates for the synthesis of new strands. The formation of the new strands occurs in only 5'-3' direction and thus both the strands are synthesized in a different manner. One new strand with the template of 3'-5' direction will be synthesized continuously and is called a leading strand. The other strand with the template of 5'-3' direction will be synthesized discontinuously in the form of DNA fragments. These fragments are called Okazaki fragments and the strand is called a lagging strand. DNA ligase connects these fragments later to form a continuous lagging strand.
Therefore, DNA ligase is required for ligation of Okazaki fragments, and in absence of DNA ligase, the ligation of fragments will not occur and the newly synthesized strand will be discontinuous. However, if DNA ligase is not present in the reaction mixture, then the chances are that not all the newly synthesized DNA strands will be discontinuous. Only the DNA molecule with the lagging strand will be in the form of fragments.
Q2. A student used cubes of potato to investigate the effect of surface area and volume on the rate of osmosis. The diagram shows two of the cubes of potato the student used. lem 2 cm 1 cm 1 cm Cube 1 The surface area to volume ratio of cube 1 is 6:1. Calculate the total surface area of cube 2. (a) 2 cm Cube 2 2 cm
The total surface area of the cube 2 is 24
How to calculate the total surface area of the cube?
The surface area is equal to six times the square of the length of the cube's sides. It is denoted as 6a₂, where an is the cube's side length.
As per formulae of the total surface area of a cube
A = 6a₂
Given a= 2,
A= 6.2.2= 24
Hence the answer is 24.
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A cross was performed, and the offspring shown
to the right were produced. What is the most likely
genotype for the parents?
OBbee x bbEE
OBbEEx Bbee
OBbEex BbEe
BBEE x bbee
DONE
10 mice with
black fur, black eyes
3 mice with
white fur, black eyes
2 mice with
black fur, red eyes
1 mouse with
white fur, red eyes
Answer: da
Explanation:
Answer:
c
Explanation:
How does the white-tailed deer overpopulation affect the ecosystem
The typing of human blood is determined by three alleles: A, B, and O. Alleles A and B are codominant to one another and O is recessive to both alleles, A and B.
AA/ AO – type A blood, AB – type AB blood, BB/ BO – type B blood, OO – type O blood.
A woman who is homozygous for type B blood marries a man who is heterozygous for type A.
What is the genotype ratio of their offspring?
What is the phenotype ratio of their offspring?
A female homozygous for blood type B marries a male heterozygous for blood type A, the offspring will be 75% AB and 25% Bo.
What is the genotype ratio of your offspring?AB 75% BO 25%What is the phenotypic ratio of your offspring?75% codominate AB zygotes25% B heterozygous.What is a heterozygous being?Homozygous and Heterozygous, in genetics, are individuals who have pairs of genes that are identical or different alleles. This means that while the homozygote has two identical genes alleles, with the heterozygous beings the opposite happens, since they have two different genes alleles.
With this information, we can conclude that a female homozygous for blood type B marries a male heterozygous for blood type A, the offspring will be 75% AB and 25% Bo.
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How will widespread solar panels to generate electricity help reduce global warming
Answer:
Solar panels fight global warming by producing electricity that keeps us from burning greenhouse gas-producing fossil fuels. They also shade Earth from the sun.
Explanation:
Three cells are placed in three solutions of different concentrations. Determine the concentration of the solutions based on the predominant
movement of water molecules through the cells.
isotonic
hypertonic
hypotonic
Solution 2
Solution 1
Solution 3
The three types of solutions and concentrations can be classified as:
Solution 1: HypertonicSolution 2: HypotonicSolution 3: IsotonicWhat is the concentration of a solution?The concentration of a solution must be expressed in quantitative units. So-called concentration units are used, which are quantitative measures of the affinity of solute that dissolves. The relative amount of a substance is known as the concentration and is expressed in different units.
In this case we can classify these solutions as :
Hypertonic solution: has higher osmotic pressure and solute concentration.Hypotonic solution: has lower osmotic pressure and solute concentration. Isotonic solution: the solute concentration and osmotic pressure are equal, thus reaching equilibrium.See more about solution at brainly.com/question/7932885
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Energy in this ecosystem passes directly from the sun to.
Answer:
Through photosynthesis, certain organisms convert solar energy (sunlight) into chemical energy, which is then used to build carbohydrate molecules. The energy stored in the bonds to hold these molecules together is released when an organism breaks down food. Cells then use this energy to perform work, such as movement.
Explanation:
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Some behaviors such as mating and caring for young are genetically determined in certain species of birds. the presence of these behaviors is most likely due to the fact that
The presence of these behaviours is most likely due to the fact that these behaviours helped birds to survive in the past.
How do birds care for young ones?Bird are the warm blooded vertebrates that has feathers, toothless beaked jaws and has the ability to reproduce their young ones through the laying of eggs.
They take care of their young ones till a certain life stage to ensure their survival.
Therefore, the presence of these behaviours is most likely due to the fact that these behaviours helped birds to survive in the past.
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Which type of cell transport is used by chloroplasts to make hydrogen (H*) ions move against their concentration gradient?
O A. Exocytosis
O B. Passive transport
O C. Active transport
O D. Diffusion
Answer:
The answer to the question is C
Charles darwin found fossils that looked like ancient versions of living species. From this evidence darwin suggested that earth was.
The fossil that was discovered by Charles Darwin goes a long way to suggest that the earth is older than 6000 years.
Who is Charles Darwin?The man Charles Darwin is the renowned proponent of the theory of evolution. According to this theory, living things all evolved from simple life forms many years ago.
The fossil that was discovered by Charles Darwin goes a long way to suggest that the earth is older than 6000 years.
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Microorganisms are involved in all of the following EXCEPT production of medicinal products. food production. converting nitrogen to a form useful to plants. There are no exceptions here. There are microorganisms that participate in each of these activities. pollution cleanup.
Microorganisms are involved in
a. production of medicinal products.
b.transforming atmospheric nitrogen to a form useful to plants.
c.food production.
d.pollution cleanup.
e.All of the choices are correct.
Microorganisms participate in all the processes mentioned. All of the choices are correct
Economic importance of microbesMicrobes can be beneficial as well as harmful.
Some of the beneficial importance of microbes include:
Production of medicine or medicinal products. E.g penicillin Conversion of atmospheric nitrogen to usable nitrogen forms to plants, otherwise known as nitrogen fixation.Food production. E.g yeast in the production of bread and Lactobacillus in the production of yogurts.Bioremediation of pollutants.More on the importance of microbes can be found here: https://brainly.com/question/17188351
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