Answer: cell wall
Explanation: a cell wall is a complex protective structure which gives shape and protection to a plant cell.
Among the functions of a cell wall is maintaining the structural integrity of a cell and providing strength. Because a cell wall has semi-permeable outer layer, it filters molecules that pass in and out of the cell hence, acting as a defense structure against a variety of external factors. It has pores and receptors that regulate various functions of the cell.
The organelle that provides protection and support to a cell is A. Cell Wall.
What is a cell wall ?The cell wall is a rigid structure that surrounds the cell membrane. It is made up of cellulose, a long, chain-like molecule that is found in plants. The cell wall provides support and protection for the cell. It helps to maintain the cell's shape and to protect it from damage.
The cytoplasm is the jelly-like substance that fills the cell. It is made up of water, proteins, carbohydrates, lipids, and other molecules. The cytoplasm contains all of the cell's organelles, except for the nucleus. The cytoplasm is where most of the cell's chemical reactions take place.
Option A is correct.
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Is Rhinoceros and Paraceratherium similar in size?
However both Rhinoceros and Paraceratherium belong to the same kind species, they have some differences in some aspects.
Explanation:
1. The accurate size of Paraceratherium is undiscovered because of the incompleteness of the specimens. but some analyses show that Paraceratherium is larger than rhinoceros.
2.No, their facial composition differs because Rhinoceros have a large horn in its front but Paraceratherium doesn't have.
3.paraceratherium had large, tusk-like teeth and The legs were long and pillar-like. rhinocerous have a strong, cylindrical body with a large head, almost short legs, and a tiny tail.
4.yes they have overall related developments in their edifice and behaviors.
5.Image
Which describes farsightedness? A. The eyeball is too short for light to focus properly. B. Nearby objects are clearer than distant ones. C. The image is focused in front of the retina. D. Faraway objects are blurry and out of focus.
Answer:
Which describes farsightedness?
The eyeball is too short for light to focus properly.
Explanation:
This farsightedness best describes longsightedness which has to do with short eyeball for light to be able to focus properly.
For a science experiment. John gradually added a sedium hydroxide (NaOH) solution to warm vegetable oil in a glass test tube. He
observed that combining the two clear liquids resulted in a solution that turned cloudy. Which statement best explains why the
solution became cloudy?
CA The vegetable oil caused the mass of the sodium hydroxide solution to change
8. The sodium hydroxide solution caused the vegetable oil to undergo a physical change
Oc. The sodium hydroxide solution and vegetable oil underwent a chemical change
D. The vegetable at caused the density of the sodium hydroxide solution to change
The sodium hydroxide solution and vegetable oil underwent a chemical change.
Explanation:The reaction between a base and a fat or fatty acid is called as saponification reaction. Here the base dissociates into the cation and hydroxyl ion. The hydrogen from the fatty acid of the oil reacts with the hydroxyl ion to form water which is basically the neutralization reaction. This cation now reacts with the rest of the fatty acid to form a bipolar molecule which is the soap. During the reaction, the solution becomes cloudy but with time, it again goes back to solution. The cloudyness appears because oil isn't soluble in water based solutions and the base is actually made solution in water.
Here the sodium hydroxide reacts with oil to form water and the soap molecule which is a chemical change.
Answer:
The sodium hydroxide solution and vegetable oil underwent a chemicalchange.
Explanation: did it on study islandddd <3
PLEASE HELP ASAP!!!
Two students, Adrian and Samantha, are determining the density of two different objects. Adrian is determine the density of a pencil. He measures the mass of the pencil on a scale. He determines the volume of the pencil by measuring its water displacement in a measuring container. Lastly, he calculates the density. Samantha is working to find the density of a metal cube. She measures the mass of the cube on a scale. To find the volume, Samantha measures the length, width, and height of the cube and then multiplies them together. Lastly, she calculates the density using these measurements. Describe two differences between the two experiments that Adrian and Samantha conducted. A) They both used a scale to weigh the objects and they both were using different objects. B) The experiments used two different objects and found the densities of both of those objects. C) They both were measuring the density of two objects and they both used a scale to weigh the objects. D) They found the volumes by two different methods and determined the densities of two different objects.
Answer:
D
Explanation:
D is the Correct answer, becaus eit is asking what the difference between the to ways they found the density.
Answer:
d
Explanation:
Which phrases describe an extrusive rock? Check all that apply
Answer:i hope i am not late lol, anyway,fine texture
- small crystal size
Explanation:the extrusive rocks are type of rocks that form on the surface of the earth, be in water or on land
Answer:
(A) - how rocks change from one type to another
(B) - which processes are involved in rock changes
Explanation:
These are correct. Did them on edge 2020.
I hope this helps <3
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Which of these is an example of the moral obligations of all Roman citizens during the Republic?
A.
to treat slaves with respect and humanity
B.
to serve as a judge when asked to hear a legal case
C.
to serve in the military in the colonies
D.
to vote in all elections for magistrates
Answer:
B.
to serve as a judge when asked to hear a legal case
hope this helps
Answer:
B
Explanation:
what units are used in a energy pyramid
The units used in a pyramid of energy are kilojoules (kJ) or, more appropriately, a unit of energy per unit area per unit of time, kilojoules per square metre per year (kJ m-2 year
Explanation:
Answer:
Kilocalories
Explanation:
Just did it on ape!x
A team of scientists is working to to determine if a meteor created a landform which branches of earth science
Final answer:
The inquiry falls under the subject of Geography within the field of Geology, as scientists aim to determine if a meteor created a landform. Geological investigation is complemented by geographical techniques for explaining and predicting landscape changes.
Explanation:
The question pertains to a team of scientists working to determine if a meteor created a landform, which relates to the field of Geology. Geology is integral to understanding Earth's landforms, including those created by meteors. For instance, scientists employ geology to study the plate tectonics that form Earth's crust and contribute to the creation of various geological structures. Moreover, the history of meteorites, beginning in the late eighteenth century, shows that geologists and astronomers have long been intrigued by the extraterrestrial origins of certain stones that fall to Earth.
Understanding the effects of an asteroid impact, as well as analyzing patterns on Earth's surface and changes in the landscape, require knowledge of spatial science and geography. This includes plotting data on a map to verify clustering phenomena. Therefore, to ascertain whether a meteor has shaped a particular landform, scientists would utilize geological and geographical methods and data analysis.
3. Describe what will happen (if anything) to mass and weight when you go to the moon.
An individual's mass remains the same when they go to the moon, but their weight decreases due to the moon's lower gravitational pull.
Explanation:Going to the moon would influence your mass and weight differently. Despite the difference in location, your mass would remain the same due to being an intrinsic property not influenced by gravity. However, weight, on the other hand, would decrease considerably when one is on the moon. Weight refers to the force of gravity exerted on an object. Because the moon's gravitational pull is only one-sixth of Earth's gravity, your weight on the moon would be one-sixth of your Earth-bound weight. For instance, a 60kg individual would still be 60kg mass-wise on the moon, but their weight would drop from approximately 588 N on Earth to approximately 100 N on the moon.
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Compare the function of chloroplasts and mitochondria in a cell. In your response, include:
a) The name of the process that occurs in each organelle
b)The products of each process
c)The importance of each process to the cell
Final answer:
Chloroplasts carry out photosynthesis to produce glucose and oxygen, while mitochondria perform cellular respiration to produce ATP. Both organelles are double-membraned and contain their own DNA and ribosomes, but they have different structures like cristae in mitochondria and chlorophyll-containing thylakoids in chloroplasts.
Explanation:
The function of chloroplasts and mitochondria within a cell are crucial for energy production and metabolism. Chloroplasts carry out photosynthesis, a process where carbon dioxide (CO₂), water, and light energy are used to make glucose and oxygen. The products of photosynthesis, glucose and oxygen, are essential for the cell as glucose serves as energy for cellular activities and oxygen is vital for aerobic respiration. Mitochondria, on the other hand, perform cellular respiration where glucose is broken down with oxygen to produce carbon dioxide, water, and ATP (adenosine triphosphate), the energy currency of the cell.
The importance of these processes to the cell lies in their role in energy transformation. Photosynthesis captures light energy and converts it into chemical energy stored in glucose, while cellular respiration converts the chemical energy in glucose into ATP, which can be readily used by the cell for various functions. These organelles have structural similarities, with both encased by a double membrane and having their own DNA, but they also have differences such as the presence of cristae in the mitochondria and thylakoids with chlorophyll pigments in chloroplasts.
Structural and Functional Similarities and Differences
Both chloroplasts and mitochondria are double-membraned organelles that produce ATP.Mitochondria have a matrix and inner folds called cristae; chloroplasts contain thylakoids with chlorophyll.Both have their own DNA and ribosomes.Chloroplasts carry out photosynthesis, while mitochondria conduct cellular respiration.What is the phenotype ratio for this cross ?
The phenotype ratio for a cross between a white-eyed male and a female heterozygous for red eye color is 1:1:1:1, consisting of equal parts red-eyed females, white-eyed females, red-eyed males, and white-eyed males.
Explanation:The phenotype ratio for a cross between a white-eyed male and a female that is heterozygous for red eye color in fruit flies can be determined using Mendelian genetics. The white-eye mutation is often found on the X chromosome and is recessive. Assuming the female has one red (dominant) and one white (recessive) allele (XWXw), and the male has only the white allele (XwY), their offspring's phenotypes depend on the alleles they inherit.
Half of the male offspring will receive the Xw allele from their mother and a Y chromosome from their father, resulting in white eyes (XwY). The other half will receive the XW allele and a Y from their father, resulting in red eyes (XWY). Female offspring will receive one X chromosome from each parent. Half of the females will be red-eyed (XWXw), and half will be white-eyed (XwXw). This yields a phenotype ratio of 1 red-eyed female: 1 white-eyed female: 1 red-eyed male: 1 white-eyed male, or simply 1:1:1:1.
Considering an Aa x Aa cross for a different scenario, the phenotype ratio is typically 3:1 for the dominant versus recessive trait. A dihybrid cross like AABb x Aabb yields a 9:3:3:1 phenotype ratio when both traits are considered, but if we consider only one trait at a time, we observe a 3:1 monohybrid cross ratio. When you cross AAbb with aabb, all offspring will display the recessive phenotype, resulting in a 1:0 ratio. For pea plants, a cross between a YY and yy individual yields all yellow offspring (1:0), while a Yy x Yy cross gives a 3:1 yellow to green ratio. When crossing guinea pigs, an SS x ss yields all smooth coat offspring (1:0) and a Ss x ss cross results in a 1:1 ratio of smooth to rough coats.
Which process results in recombination of genetic material?
The process of recombination, or crossover, happens during meiosis. It results in the exchange of genetic material between homologous chromosomes, leading to unique combinations of maternal and paternal genes. This process contributes significantly to genetic diversity.
Explanation:The process that results in recombination of genetic material is known as crossover, or recombination. It takes place during meiosis when two homologous chromosomes align and exchange parts of their genetic material.
This process results in the creation of recombinant chromosomes which contain a mix of maternal and paternal genes that did not exist before the crossover. Multiple crossovers can occur, each generating a unique combination of genes. This recombination adds to genetic diversity among gametes and is a vital component of evolution.
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Please identify
Label A
Label B
Label C
Label D
Answer:
Label A: Nucleus
Nucleus can be described as the organelle in which the DNA is enclosed. The nucleus is found in every eukaryotic cell.
Label B: Vacuole
Vacuole can be described as an organelle which is used to store material such as waste. Hence, vacuole is known to be the storage house of a cell.
Label C: Ribosomes
Ribosomes can be described as structures which are present usually on the rough endoplasmic reticulum. The process of translation occurs in the ribosomes and they are hence known to be the protein manufacturing units if a cell.
Label D: Centrioles
A centriole is a cylindrical organelle which is usually made up of the protein tubulin.
A: Nucleus
B: Lysosome
C:Ribsomes
D: Centrioles
Guinea Pigs can either have black fur (B) or white fur (b) and rough textured coats (R) or smooth textured coats (r).
If a guinea pig who is homozygous for both black fur and smooth texture is crossed with a white guinea pig who is heterozygous for rough texture, what are the expected phenotypic ratios for their offspring?
Group of answer choices: 0/16, 1/16, 8/16, 9/16, 3/16
black rough fur ...
black smooth fur ...
white rough fur ...
white smooth fur ...
Answer:
The answers are explained below:
Black rough fur - [tex]\frac{1}{2}=\frac{8}{16}[/tex].Black smooth fur - [tex]\frac{1}{2}=\frac{8}{16}[/tex].White rough fur - [tex]\frac{0}{16}[/tex].white smooth fur -[tex]\frac{0}{16}[/tex]Explanation:
The genotype of homozygous black fur and smooth texture: BBrr.The gametes produced are : BrThe genotype of white and heterozygous for rough texture: bbRrThe gametes produced are : bR and br.The cross,bR br
Br BbRr Bbrr
(B/R) (B/S)
In the brackets (), B - Black.R - Rough.S -Smooth.The cross can develop two types of offspring, that is, Black and Rough (BbRr) - 1.Black and smooth (Bbrr)- 1.The answers:Black rough fur - [tex]\frac{1}{2}=\frac{8}{16}[/tex].Black smooth fur - [tex]\frac{1}{2}=\frac{8}{16}[/tex].White rough fur - [tex]\frac{0}{16}[/tex].white smooth fur -[tex]\frac{0}{16}[/tex]Restriction _________ are used to break DNA into pieces for analysis and comparison.
cutters
enzymes
2.
Gel, an electric source, and a micropipet to load the sample into the gel, are needed to make a DNA ______________.
splice
fingerprint
3.
Scientists use _________ for a crime investigation in order to get sample DNA to replicate millions of times to create enough DNA to evaluate.
PCR
1. Enzymes
2. Fingerprint
3. PCR
Explanation:
1. Restriction enzymes are those enzymes that cuts or cleave the DNA sequence at specific sites called recognition sites. The DNA pieces thus obtained is amplified and used for analysis and comparison. Restriction endonucleases cuts the phosphodiester bond of the DNA strand in the interior and Restriction exonucleases cuts at the ends.
2. DNA Fingerprint is the technique in which the DNA samples are run in the gel which separates the DNA strands based on its size which is then compared to the reference DNA sample. Therefore, DNA fingerprint is used in crime scene investigation. During the process of gel electrophoresis, the sample DNA is loaded into the gel with the help of a micropipette and then allowed to run in the presence of electric current. The DNA strands gets separated based on its size and charge.
3. Polymerase chain reaction (PCR) is the process of amplification of DNA. In crime scene investigation, the DNA sample of the suspect is amplified millions of times to evaluate and compare with the criminal's DNA sample using PCR. In the process of PCR, DNA template, DNA Polymerase enzyme (Taq polymerase), primers are required. Temperature plays an important role in the process of PCR.
Answer:
enzymes
Explanation:
The only types of changes that can happen to an ecosystem are biological.
1) True
2) False
Which of these technologies allows scientists to follow the movements of animals after placing electronic collars on them?
Answer:
The Global Positioning System (GPS) works in conjuction with electronic collars to enable scientists to track endangered animals.
Explanation:
Answer:
Which of these technologies allows scientists to follow the movements of animals after placing electronic collars on them?
hidden camera being placed on animals or strategic location of this camera has greatly helped in monitoring movement although the usage of drones has taken over the use of helicopter in monitoring of animal movement
Explanation:
how many animals are in the world?
Answer:
8.7 million animals #markasbrainliest
What other system does the circulatory system work with?
Answer:
The respiratory system.
Explanation:
The circulatory system works with the respiratory system. The circulatory system transports oxygen through the body, while the respiratory system supplies the body with that oxygen.
I hope this helps. Happy studying. :)
What effect does atmospheric co2 have on ocean acidification?
Answer: Ocean acidification is occurring because excess carbon dioxide (CO2) in the atmosphere is being absorbed at the surface of the ocean at an increasing rate. This excess CO2 results in more hydrogen ions, which increases the acidity of the ocean.
Explanation:
Ocean acidification is occurring because excess carbon dioxide (CO2) in the atmosphere is being absorbed at the surface of the ocean at an increasing rate.
What is ocean acidification?About 30% of the carbon dioxide (CO2) released into the atmosphere is absorbed by the ocean.
The quantity of carbon dioxide absorbed by the ocean also rises as atmospheric Carbon dioxide levels rise as a result of human activities such as burning fossil fuels (e.g., automobile emissions) and altering land use (e.g., deforestation).
The concentration of hydrogen ions increases as a result of a series of chemical reactions that take place when Carbon dioxide is absorbed by saltwater. The effects of this process on the ocean and the marine life that inhabits it are extensive.
Therefore, Ocean acidification is occurring because excess carbon dioxide (CO2) in the atmosphere is being absorbed at the surface of the ocean at an increasing rate.
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A scientist wants to study how 10 million liters of leaked crude oil would
affect the Gulf of Mexico. Which of these is the most ethical reason for using
a simulation rather than an experiment with crude oil in the Gulf of Mexico?
O
A. A simulation could be repeated more times than an experiment.
O
B. The ecosystems affected would have to be observed for a long
time.
O
C. It would cost too much to buy that much crude oil for an
experiment.
0
D. The effects of pollution can be studied without harming an
ecosystem.
Answer:
D.
Explanation:
In terms of being ethical or unethical, it would be unethical to purposely dump 10 million liters of crude oil into the Gulf of Mexico because of the damage it would do to the organisms living there including plants, animals, and people.
1. Where are your genes found?
your alleles
your cytoplasm
your ribosomes
your chromosomes
2. What is the shape of DNA called?
nucleotide
double helix
chromosome
ribonucleic acid
3. What is the relationship between a chromosome and DNA?
Chromosomes are made of DNA.
DNA is made of chromosomes.
DNA manufactures chromosomes.
Chromosomes manufacture DNA.
4. What do parents pass on to their offspring?
genes
double helix
nucleotides
ribosomes
5. What is one job of RNA?
unraveling DNA
manufacturing nucleotides
carrying genetic information
giving shape to chromosomes
Answer:
1. your chromosomes
2. double helix
3. chromosomes are made up of DNA
4. genes
5. carrying genetic information
(just took the test and got 100)
Explanation:
Groundwater is polluted by:
Chemical Fertilizers
Automobile exhaust
Fossil Fuel Burining
All of the Above
All of the above.
Explanation:
Ground water is polluted by Chemical fertilizers, Automobile exhaust as well as Fossil fuel burning.
Chemical fertilizers are directly causin ground water pollution. The excess of Chemical fertilizers on the land results in leaching of these chemicals into the ground water during rains.
But the Automobile exhaust and Fossil fuel burning are indirectly causing ground water pollution.
This can best be explained by considering the effects of acid rain on ground water. Acid rain causes harmful elements and certain toxic substance to dissolve in it and leach into the soil reaching the ground water. The Ground water acidification is also a consequence of acid rain.
Acid rains results from the presence of oxides of nitrogen, carbons, sulphur etc. These air pollutants are added to the atmosphere by automobile exhausts and fossil fuel burning.
So, we can conclude that automobile exhaust and fossil fuel burning may not be a direct cause of ground water pollution but they are indirectly responsible for ground water pollution.
Answer:
A. Chemical Fertilizers
Explanation:
Hope it helps.
what is the relationship between chromatin and chromosomes
Answer:
Both chromatin and chromosome structures are nucleoprotein complexes in which chromatin is uncondensed part whereas chromosome is condensed part.
Explanation:
Chromatin, made up of DNA and protein, compactly forms into chromosomes visible during cell division. The structure of chromosomes is a direct result of how chromatin is arranged and packed.
Explanation:The relationship between chromatin and chromosomes is essentially related to their structure and function inside a cell. Chromatin is a substance within a chromosome consisting of DNA and protein. It is the material that makes up the chromosomes when a cell is at rest. Chromosomes, on the other hand, are highly condensed structures formed by chromatin that are visible during cell division. Therefore, the structure of chromosomes is directly derived from the arrangement and packing of chromatin.
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A homozygous type B woman marries a heterozygous type A man. Show punnett square genotypes and phenotype
Phenotype is Type A: Type B
Genotype is 1:1
Explanation:
It is given that type B woman is homozygous.
Thus the genotype of the woman can be BB or bb
The man is of type A and heterozygous.
Thus the genotype of the man is Bb
We see that when the genotype is heterozygous Bb then the gene expresses type A condition
So, when the alleles are in homozygous dominant condition then the gene BB will also express in type A condition.
But we know that the women is type B. So, the genotype of the women is bb.
Cross between bb X Bb is shown in the punnett square attached
Thus,
Phenotype is Type A: Type B
Genotype is 1:1
Suppose the two possible alleles for the height gene are tall and short. If short is recessive to tall, provide the symbol representation and the phenotype for each of the genotype for this trait.
Phenotype - short , Tall
Genotype - tt (short) , TT or Tt (tall)
Explanation:
In Mendelian Genetics, Dominant traits are represented by capital letters and Recessive traits are represented by small letters.
So if height is the character considered, then the traits would be short and tall.
Tall is the dominant phenotype and short is the recessive phenotype.
The alleles of the gene for height are T and t.
The genotype for Tall trait is TT or Tt.
The genotype for short trait is tt.
Therefore, the symbol representation of phenotype (Tall) is TT or Tt and for phenotype (short) is tt.
Jupiter is a larger and more massive planet than Earth. If we could send a chicken to Jupiter, which statement below accurately describes the mass and relative weight of the chicken.
Question 3 options:
The mass and the weight of the chicken would increase.
The weight of the chicken would increase, but there would be no change in mass.
The mass of the chicken would increase, but its weight would decrease.
The mass of the chicken would change, but there would be no change in weight.
Answer:
The correct option is
b.) The weight of the chicken would increase, but there would be no
change in mass.
Explanation:
Jupiter is a larger and more massive planet than Earth.
The gravity of Jupiter is much more than Earth.
The weight of an object on a planet depends on the planet's gravity.
The weight of an object on a planet = (mass of the object) [tex]\times[/tex] (gravity of the planet)
Therefore the mass of an object is the same on any plant irrespective of the gravity of the planet.
Since the gravity of Jupiter is more than that of Earth then the weight of the chicken on Jupiter will be more than the weight of the same chicken on Earth.
Therefore the correct option is
b.) The weight of the chicken would increase, but there would be no
change in mass.
How many atoms are in one cell
Answer:
The number of atoms in a single cell is equal to 100 trillion or 100000000000000 atoms in 1 cell
Explanation:
The number of atoms in a single cell is equal to 100 trillion or 100000000000000 atoms in 1 cell. Another interesting fact that in the entire human body , the number of cells is also found to nearly equal to 100 trillion.
Hope this help
Have a nice day!!!!!!
Depending on the type of cell and its size, a cell's atom count can change. A normal human cell is thought to have 100 trillion (1014) atoms on average. This contains the atoms of different elements that make up the molecules and structures in the cell, including carbon, hydrogen, oxygen, nitrogen, phosphorus, and many more.
It's crucial to remember that a cell's exact atom count might change depending on the type of cell, its size, and the particular chemicals it contains. The makeup of each cell varies, and various chemicals and elements may be present in different concentrations.
Moreover, as cellular activities including chemical synthesis, breakdown, and energy metabolism take place, the number of atoms in a cell can also alter dynamically.
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The term validity refers to how _____.
A. important a discovery is scientifically
B. clever the design of the experiment is
C. well-chosen the independent and dependent variables are
D. likely it is that other experiments will support the same conclusion
Answer:
D is most likely to be right.
Explanation:
As a child, Alex was short for his age. But during his teenage years, his height increased and he surpassed most of his friends. What must have occurred to create this growth spurt?
During his teenage years, Alex likely experienced an adolescent growth spurt, caused by hormonal changes during puberty, leading to a rapid increase in height and muscle development.
Alex's height increase during his teenage years is most likely due to the adolescent growth spurt, which is a period of rapid growth that happens during puberty. In boys, growth in height typically starts to increase early in puberty, spurred by the release of hormones such as testosterone, growth hormones, thyroid hormones, and androgens.
The peak rate of height growth can reach about 10 centimeters per year. This rapid growth period generally lasts for several years, and it's also during this time that muscle development occurs, which can continue even after height growth has ceased.