Answer:
Explanation:
prokaryotes:
1] they have single chromosomes
2] they are unicellular
3] these are primitive and incomplete cells
4] they are found in bacteria and blue - green algae
eukaryotes:
1] they have more than 1 chromosomes
2] they are multicellular
3] these are advanced and complete cells
4] they are found in all living organisms except blue - green algae and bacteria
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Answer;
shortly:-The main differences between prokaryotic and eukaryotic cells are the presence of a nucleus, the size and complexity of the ribosomes, how the cells reproduce and the presence of a cell wall. Ribosomes: In eukaryotic cells, the ribosomes are bigger, more complex and bound by a membrane
but you need more explanation:-
Eukaryotic organisms are made out of cells that possess membrane-bound organelles and a membrane-bound nucleus. The genetic material of eukaryotic organisms is found within the nucleus of the cell and chromosomes are how the DNA is organized within the nucleus. Eukaryotic cells comprise both single-celled and multicellular forms of life. Eukaryotes compose the bodies of all protists, fungi, plants, and animals.
Eukaryotic cells display an impressive amount of diversity, and they are capable of being many different shapes and sizes. The structure of a eukaryotic cell is tied closely to its function. For example, the epithelial cells that make up the human body are usually divided into three different types: squamous, cuboidal, and columnar. Each of these different cell types has a different form that enables it to carry out its respective functionsEukaryotic cells may have the following parts:
Cell wall (only plant cells)
Plasma membrane
Nucleolus
Nucleus
Chromosomes
Vesicles
Golgi apparatus
Ribosomes
Endoplasmic reticulum
Cytoplasm (and cytoskeleton)
Lysosomes
Mitochondria
Centrioles
Chloroplasts (only plant cells)
Prokaryotic cells are almost always much smaller than eukaryotic cells. The size of a prokaryotic cell is usually around 1 µm, while the size of animal cells and plant cells are usually between 10 to 100 µm. Because eukaryotic cells are much larger than prokaryotic cells, they have evolved special methods of transporting substances around the cell that bacteria don’t have.
but
Eukaryotic organisms are made out of cells that possess membrane-bound organelles and a membrane-bound nucleus. The genetic material of eukaryotic organisms is found within the nucleus of the cell and chromosomes are how the DNA is organized within the nucleus. Eukaryotic cells comprise both single-celled and multicellular forms of life. Eukaryotes compose the bodies of all protists, fungi, plants, and animals.
Eukaryotic cells display an impressive amount of diversity, and they are capable of being many different shapes and sizes. The structure of a eukaryotic cell is tied closely to its function. For example, the epithelial cells that make up the human body are usually divided into three different types: squamous, cuboidal, and columnar. Each of these different cell types has a different form that enables it to carry out its respective functions.
The distinction between eukaryotes and prokaryotes is based upon two theories regarding the role of cells in biology. Cell theory states that all living things are made out of cells, and biogenesis theory proposes that all living cells came from other existing cells, so cells cannot spontaneously arise from non-living things (abiogenesis). For cells to comprise all the life we see on Earth they must be able to organize proteins and other chemical compounds. Individual cells are capable of keeping chemical processes isolated and compartmentalized so one chemical process doesn’t interfere with another chemical process, which runs the risk of disrupting the delicate chemical balance of the cell and leading to cell death.
“A cell is regarded as the true biological atom.” — George Henry Lewes
To keep the chemical processes within a cell isolated and organized, cell components stay enclosed within a membrane that serves as the barrier between the interior of the cell and the cell’s environment. The membrane of a cell is selectively permeable, meaning that the cell will allow some chemical compounds into the cell and not others. The membrane of the cell is made out of a phospholipid bilayer, two groups of lipids arrayed in layers and facing opposite directions. Smaller compounds can penetrate the phospholipid bilayer, but larger compounds must enter the cell using a pore in the cell membrane.
The cell membrane has various methods of regulating how chemicals move in and out of the cell. Diffusion refers to the tendency of molecules at high concentrations to distribute out to areas of lower concentration until the concentrations across the two areas equalize. Osmosis is similar to diffusion, but it refers to the movement of a solvent across a boundary instead of a solute. This helps to equalize a solute that can’t move through a boundary. Selective transport, the movement of molecules within the cell, is handled by both membrane pumps and membrane channels.
What is a community?
individuals of the same species that live in the same area
populations that live in similar environments around the world
populations that live and interact in the same area
Answer:
Populations that live and interact in the same area
What is the chromosome number produced in daughter cells as a result of mitosis?
A. 1n
B. 2n
C. 4n
The chromosome number produced in daughter cells as a result of mitosis is the 2n that is in option B, as in this process, the parent cell and the daughter cell contain the same genetic content.
What is the significance of a set of chromosomes?There are different sets of chromosomes in different species such as wheat's genetic contents differ from those of humans because humans have two sets (2n) of chromosomes, whereas some plants have tetraploid sets of chromosomes. The number of chromosomes remains constant after cell division in mitosis, and the cell gets the exact same copy in mitosis, which is 2n in the case of the human, as humans have a 2n set.
Hence, the chromosome number produced in daughter cells as a result of mitosis is the 2n that is in option B, as in this process, the parent cell and the daughter cell contain the same genetic content.
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100 POINTS PLZ!!! AND DO NOT SAY I.DK IT IS SO MEAN!! JUST DON"T ANSWER IT IF YOU DON"T KNOW THE ANSWER!
Use the library and other reference materials to research lupus. Then, write a 400-word report on what you have learned. Be sure to include symptoms, causes, and treatments.
Answer:
The one I chose is very interesting I think you will enjoy it.
Lupus is a multisystem disease in which autoantibody production can lead to inflammation and tissue
damage in any part of the body. The pathogenesis of lupus is thought to be a combination of
predisposing genetic factors and environmental factors such as medication, or infectious agents that
trigger an abnormal immune response. This occurs when Suppressor T cells fail to suppress, in other words there are defects in cell signaling
hope this helps <333 luv yuu
Explanation:
Answer:
he is correct
Explanation:
If an organism has a diploid number of 50, and one of its cells undergoes meiosis, what is
the number of daughter cells and how many chromosomes will each one have?
Answer:
for me
Explanation:
it's 25
because di is 2 and ha is 1
If an organism has a diploid number of 50, and one of its cells undergoes meiosis, then the number of daughter cells produced by this cell is four and each contains 25 chromosomes.
What is Diploid?Diploid may be defined as a condition that determines the existence of two complete sets of chromosomes in an organism's cells, with each parent contributing a chromosome to each pair.
On contrary, haploid cells generally contain only a single set of chromosomes. These types of cells are formed due to the process of meiosis, while diploid cells are formed by the activity of mitosis.
According to the question, if a diploid number of an organism = 50.
This means that 2n = 50,
n = 25.
As we all know that when a cell undergoes meiosis, it will definitely have half the amount of genetic content in its daughter cells.
Therefore, if an organism has a diploid number of 50, and one of its cells undergoes meiosis, then the number of daughter cells produced by this cell is four and each contains 25 chromosomes.
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The organic compounds that have many structural purposes and are used
in many processes within the
cell are called?
Answer:
.......is called chemical compound
The organic compounds that have many structural purposes and are used in many processes within the cell are called - Proteins.
The four types of most important organic molecules to structure and function are carbohydrates, lipids, proteins, and nucleotides for many organisms including humans.
Proteins are
biological organic molecules that are the most essential and versatile of all the organic molecules.it forms many cellular structures and molecules and performs various functions within the cell of organisms.They form tissues and muscles, speed up chemical reactions as enzymes, and perform many other cellular functions.Proteins are made up of amino acids form by nucleic acids that include DNA and RNA. DNA contains genetic instructions for proteins, and RNA helps assemble the proteins.
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difference between alleles and genes
Answer:
i dont really know it is what it is
Explanation:
gl
Answer:
[See Below]
Explanation:
A gene in DNA that codes for a trait or a characteristic.
Different versions of that gene are called alleles.
For example, a gene in DNA codes for a person's eye color, but the alleles depend on how they appear.
Brown and blue eyes would be alleles for a gene that codes for eye color.
Hope this helps.
Where does all of Earth's weather occur?
Answer:
troposphere
Explanation
The troposphere is the lowest layer of the atmosphere. This is the layer where we live and where weather happens. Temperature in this layer generally decreases with height. The boundary between the stratosphere and the troposphere is called the tropopause.
Hope that helps!
the word bank is at the bottom !
Interphase - DNA replication occurs
Prophase - Homologous chromosomes pair up forming a tetrad
(The first two might be wrong so I apologize)
Metaphase - Spindle fibers attach to chromosomes
Anaphase - Spindle fibers pull chromosomes toward opposite ends of the cell
Telophase/Cytokinesis - Two new nuclear membranes form. Two new cells are formed
The type of immunity that is general and nonspecific and recognizes microbial invaders quickly is called:_______
Answer:
Innate or natural immunity
Explanation:
Innate immunity is a defense system that we are born with and that protects us against antigens. It is the sum of all defense mechanisms that occur naturally to protect an individual from infectious diseases. They are physiological mechanisms that are present throughout the entire animal kingdom and it is an inherent quality of each species. They are not specific to a given pathogen, nor do they generate memory
In humans, freckles (F), widow’s peak (W) and attached earlobes (E) are all unlinked dominant traits. A man with freckles, widow's peak and attached earlobes marries a woman with freckles, straight hairline, and attached earlobes. Their first child has no-freckles, straight hairline, and detached earlobes. What is the probability that their second child has no-freckles, straight hairline, and attached earlobes? Select one:
Answer:
The correct answer is - 3/32.
Explanation:
We know that freckles F is dominant over no freckles f, similarly, Widow's peak W is dominant over straight hairline w and attached earlobes are dominant over free earlobes.
So, the combination of alleles for each phenotype would be:
No freckles = ff , Freckles = FF, Ff
Free earlobes = ee , Attached earlobes = EE, Ee
Straight hairline = ww , Widow's peak = WW, Ww
In the question, it is given that the first child has no-freckles, straight hairline, and detached earlobes that would be - ffwwee genotype and as it is given that all alleles are in recessive which means both parents must have recessive alleles.
So, the correct genotype of the man will be FfWwEe and the woman will be FfwwEe.
(man = freckles, widow's peak, and attached earlobes (F_W_E_) and woman = freckles, straight hairline, and attached earlobes (F_w_E_))
then cross between: FfWwEe × FfwwEe
The probability of the freckles and no freckles would be-
Ff × Ff = 3/4 freckles, 1/4 no freckles
The probability of the widows and straight hairline would be-
Ww × ww = 1/2 widows peak, 1/2 straight hairline
The probability of the free earlobes and attached earlobes would be-
Ee × Ee = 3/4 attached, 1/4 free earlobes
Combined possibility of all three phenotypes: no freckles, straight, attached would be = 1/4 × 1/2 × 3/4 = 3/32
Thus, the correct answer is - 3/32.
which of the following is not a characteristic of the plasma membrane?
1. contains different types of protein
2. composed of phospholipid bilateral
3. contains the cells dna
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The investigations conducted by Edwin Chargaff support the idea that DNA is the source of heritable information, and they also show a relationship between the ratios of the different nitrogenous bases in DNA. Based on the results of Chargaff's research, which is the best estimate of an organism's DNA base composition that contains 28.0% thymine
all the thymine pairs with adenine, therefore there is the same number of adenine and thymine bases and the same percentage
so we have 28%thymine and 28% adenine
100-28-28=44% left
this 44% is guanine and cytosine. All of the guanine pairs with cytosine and all of the cytosine pairs with guanine so we have 44/2=22% cytosine and guanine
composition:
28%adenine
28%thymine
22%guanine
22%cytosine
Animals that live on intertidal rocks often exhibit compressed or dorsally flattened bodies. this is an adadptation that protects against:______
a. sunlight
b. high temperatures
c. desiccation
d. wave shock
e. predation
Answer:
d. wave shock
Explanation:
An adaptation can be defined as a phenotypic trait that makes an organism and/or species better suited to its environment, thereby this organism/species will have more chances to survive and reproduce in such conditions. Rock-dwelling aquatic animals have different ecological, morphological and behavioral adaptations to survive in this type of environment. In this regard, it is well-known that these organisms show dorsally flattened bodies, since it is one fundamental morphological adaptation which helps them to dissipate the force of the waves.
What causes uncontrolled cell division at the genetic level?
Answer:
mutations affecting proteins that normally regulate the cell cycle.
Explanation:
The function of the cell cycle is the duplication of DNA molecules in chromosomes and precisely separated by copying into two genetically identical daughter cells.
A tumor is an abnormal mass of tissue that results from the uncontrolled growth of cells.
Rapid communication throught the body is accomplished through?
Answer:
The nervous system is primarily responsible for rapid communication throughout the body.
Explanation:
When will natural selection occur?
A.When there is no competition
B.When there is limited food
C.When there are plenty of resources
D.When there is no genetic variation
Answer:
I think when there is no genectic variation
Explanation:
Answer:
when there is limited food
Explanation:
I just need the correct answers
Sc U4 Forces and Motion Assessment (Lunch) / 8 of 25
A boy and his two friends push three toy cars across a smooth floor. Each car is being pushed at the same constant speed.
Car
Time of push
Distance of push
A
10 seconds
5 meters
B
5 seconds
?
с
15 seconds
Determine the distance cars B and C must travel in order for all cars to go the same speed. (DOK 2, AKS 8a)
O A Cars B and C must travel 5 m since that is how far Car A travelled
OB. Car C must travel 7.5 m and Car B must travel 2.5 m
O C. Car B must travel 20 m and Car C must travel 30 m
D. Car B must travel 7.5 m and Car C must travel 2.5 m
Answer:
The answer is B because you need to have both of the distances the same
Explanation:
Cellular respiration transforms glucose and oxygen into carbon dioxide, water, and energy.
C6H1206 +602=6CO2 +?H2O + Energy
Based on the law of conservation of matter what is the missing coefficient for water?
O 6
O 4
O2
O 8
On the left side there are 12 hydrogen atoms there needs to be the same number on the right. The coefficient for hydrogen in water is 2.
2*x=12
x=6
The missing coefficient for water is O6 in cellular respiration. Thus option A is correct.
What do you mean by aerobic cellular respiration?
Cellular respiration is up two types such as aerobic and anaerobic.
Aerobic Cellular Respiration is the process by which glucose is and oxygen are used to synthesize CO2, H2O and 36 ATP.
It occurs in the cytoplasm and mitochondria of the cell.
It has four steps such as Glycolysis occurs in the cytoplasm where breakdown of glucose occur and make 2 ATP.
The Intermediate Step take place in mitchondria where 3 carbon pyruvic acid molecules are converted to 2 carbon molecules.
Third step is the Kreb's Cycle occurs in the mitochondria where 2 ATP and Hydrogen ions are collected.
Finally, the Electron Transport Chain occurs in the cristae of the mitochondria make approximately 28-32 ATP.
Thus option A is correct.
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OA. Positively charged particles are attracted to negatively charged
particles.
OB. Negative and positive electric charges build up in different regions
of a clOud
C. Electrons flow from an outlet into a toaster, causing it to heat a
slice of bread.
OD. A person rubs a shoe on a rug, causing extra electrons to be
transferred to the shoe.
Complete question:
Which is an example of current electricity?
A. Positively charged particles are attracted to negatively charged
particles.
B. Negative and positive electric charges build up in different regions
of a cloud.
C. Electrons flow from an outlet into a toaster, causing it to heat a
slice of bread.
D. A person rubs a shoe on a rug, causing extra electrons to be
transferred to the shoe.
Answer:
The correct example of current electricity is C. Electrons flow from an outlet into a toaster, causing it to heat a slice of bread.
Explanation:
Current electricity refers to the flux of charged particles through a conductor material per unit of time. In general, when we refer to electric current we are talking about the electron flux. Electric energy originates from the difference of electrical potential between two points when they get in contact through a conductor. This contact provokes an electrical current that consists of the transmission of negative charges called electrons through conductor materials such as metals from the source of generation to the point of consumption.
In the exposed example, the source of electrons is the outlet, while the point of electron consumption is the toaster. In this last artifact, electrical energy is transformed into heat to toast the bread.
Biological evidence
Answer:
According to nist.gov, Biological evidence refers to samples of biological material—such as hair, tissue, bones, teeth, etc.—or to evidence items containing biological material
Explanation:
How dose the process of photosynthesis create food
Answer:
Plants, like all living things, need food to survive. Plants make their food using a process called photosynthesis, which means “putting together through light.” During photosynthesis, a plant traps energy from sunlight with its leaves. It also takes up water from its roots and carbon dioxide gas from the air.
Explanation:
4. Discuss the sense organs of cnidarians
Answer:
To tell the truth I don't know what none of this stuff so I searched it up.
Explanation:
Cnidarian sense organs are thought to be exclusive to the medusa, a point we dispute subsequently. Nevertheless, the sense organs of the medusa are highly developed and distributed across Scyphozoa, Hydrozoa, and Cubazoa. In those hydrozoans with a medusa stage, many have eyes associated with the tentacle base.
Hope that is what you are looking for.
Answer:
he rhopalium, the sense organ bearing structure of Scyphozoa, as well as the Cubozoa (a modified group within the scyphozoans), contains the statocyst and eyes. It is borne on the margin of the bell in the medusa. The rhopalia of cubozoan medusae contain eyes with lenses, the most dramatic of cnidarian sense organs.
Explanation:
Where is O2 used (broken in half and turned into a water molecule)?
Answer:
[tex]H_{2}O[/tex]
Explanation:
Which part of my brain is probably damaged if I am unable to recognize basic objects arond my house?
Answer:
The correct answer is - the hippocampus.
Explanation:
Hippocampus is the part of the brain located deep in the temporal lobe that is related to memory and learning abilities. The hippocampus is present in humans and other mammals, two in numbers.
Injuries to the hippocampus will be lead to problems that are associated with a memory like recognition and identifying people or things or the ability to learn things. Direction, locations type of memories would be affected if damaged.
Answer: hippocampus
Explanation: took quiz :)
Which of the following happens when a cell divides? *
Answer:
when a cell divides
many other cell is formed
for example if one cell divides two cells will be formed.
E. coli strain B is doubly infected with two rII mutants of phage T4. 0.2 ml of a 108 dilution of the progeny is plated on E. coli B and 0.1 ml of a 104 dilution of the progeny is plated on E. coli K. 16 plaques appeared on strain B, 400 on strain K. Calculate the recombination frequency between these two mutations.
To Find :
The recombination frequency between these two mutations.
Solution :
Formula of calculating recombination frequency is :
[tex]R.F = \text{Number of mutations}\times \dfrac{\text{number of k plaques} \times D.F }{\text{Volume used}}\times \dfrac{Volume'}{\text{Number of B plaques} \times D.F' }}[/tex]
Putting all given values in above equation, we get :
[tex]R.F = \dfrac{2\times 400\times 0.2 \times 10^4}{16\times 0.1\times 10^8}\\\\R.F = 0.01[/tex]
Therefore, the recombination frequency between these two mutations is 0.01 or 1 %.
Given:
No. of mutation = 2Volume, [tex]V = 0.1[/tex][tex]V'= 0.2[/tex]
k plaques = 400The formula:
→ [tex]R.F = No. \ of \ mutations\times \frac{No. \ of \ k \ plaques\times D.F }{Volume}\times \frac{Volume'}{No. \ of \ B \ plaques\times D.F'}[/tex]
By putting the values in the above formula, we get
→ [tex]= \frac{2\times 400\times 0.2\times 10^4}{16\times 0.1\times 10^8}[/tex]
→ [tex]= \frac{160\times 10^4}{1.6\times 10^8}[/tex]
→ [tex]= 0.01[/tex]
Thus the solution above is the right approach.
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James fills a graduated cylinder with 50 mL of water. He then drops a 60g key into the graduated cylinder. The water level inside the graduated cylinder rose to 53 mL as shown below.
50 mL
53 mL
If Density = Mass/Volume, what is the density of the key?
- 60 g/ml
- 20 g/mL
- 2.05 g/mL
- 0.05 g/mL
60 g/ml
l Explanation:
dxcfvgbhnjm
What is an inference? Observation?
6. Below is a strand of DNA. Give me the complementary DNA strand.
ATCGTTG GACTGACTITA
what's the answer?
Answer:
TAGCAAC CTGACTCAAT
Explanation:
a = t
g = c
I hope this helped and if it did I would appreciate it if you marked me Brainliest Thank you and have a nice day!
Answer:
TAGCAAC CTGACTGA(there is no I) AT