Answer: uh i think its the last one
Explanation:
Select the correct image.
The images show the stages of human development. At which stage does cell differentiation start?
Between the eighth and sixteenth weeks of pregnancy, the human fetal pituitary experiences cellular differentiation.
What is cell differentiation ?The process of cell differentiation is how dividing cells alter their phenotypic or functional type. It is likely that all cells originate from stem cells and acquire their functions as they develop. Stem cells are typically at the top of a hierarchical structure that represents cellular composition.
The transformation of a single-celled zygote into a multicellular embryo and then into the complex multisystem of several cell types that is a fetus is an illustration of cell differentiation.
Gene expression and cell differentiation can both be influenced by environmental variables. Available nutrients, salinity, and temperature, for example, are all elements that can alter gene expression in organisms.
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can someone tell me , what's special about genetical engineering ?
Answer:
By knocking out genes responsible for certain conditions it is possible to create animal model organisms of human diseases. As well as producing hormones, vaccines and other drugs , genetic engineering has the potential to cure genetic diseases through gene therapy.
Explanation:
Believe it!!
This is the answer you needed....
To summarize what you have learned about transcription, explain how a gene directs the synthesis of an mRNA molecule. Include in your explanation the words and phrases: base-pairing rules, complementary nucleotides, DNA, gene, mRNA, nucleotide, nucleus, and RNA polymerase
Answer:
Please find a detailed explanation of the process below
Explanation:
Transcription is the first stage of gene expression in living organisms in which a DNA sequence is used to synthesize a mRNA molecule. This process, which occurs in the NUCLEUS of eukaryotes and cytoplasm of prokaryotes, is catalyzed by an enzyme called RNA POLYMERASE.
- In the initial stage called INITIATION, RNA polymerase binds to the promoter of GENE and starts to unwind the double strand of the DNA sequence.
- The RNA polymerase, then, begins to add complementary NUCLEOTIDE bases following the COMPLEMENTARY BASE PAIRING RULE, which states that Adenine will pair with Thymine (Uracil in RNA) while Guanine will pair with Cytosine i.e. T-A, A-U, G-C etc. This stage is called ELONGATION.
- The last stage called TERMINATION involves the stopping of the process because the RNA polymerase has encountered a termination signal.
What area of the cell does RNA give instructions to form polypeptides?
A. Cytoplasm
B. Nucleus
C. lysozomal replication area
D. endoplasmic nucliation
Answer:
B. Nuecleus
Explanation:
i think, I done this question before and I believe that's the answer
How is a light element like helium is formed in stars and how is a heavier element like gold formed by stars? YALL HELP ME WITH THIS PLEASE
1. Elements are not formed in stars. All elements were formed during the Big Bang and no elements have been formed since then.
2. Both light and heavy elements are formed only under very high energy conditions, such as a supernova.
3. Only light elements like helium are formed by stars. They are formed from the fusion of hydrogen nuclei. A hydrogen nucleus is made of a single proton. When protons fuse together, a new atom of helium is formed. Heavier elements like gold cannot be formed under any condition.
4. A light element like helium is formed by the fusion of hydrogen nuclei. A hydrogen nucleus is made of a single proton. When protons fuse together, a new atom of helium is formed. Heavier elements like gold form under very high energy conditions, such as a supernova, when helium atoms combine under enough successive collisions to form very heavy elements.
Answer:
its d
Explanation:
lol im pretty sure im right but i could be wrong
The theory behind the formation of helium and gold is the fusing of hydrogen nuclei results in the formation of a light element like helium. One proton makes up the hydrogen nucleus. New helium atoms are created when protons combine. When helium atoms combine through enough consecutive collisions, as occurs during a supernova, they combine to generate heavier metals like gold. The correct option is 4.
What is fusion?
Fusion is a process in which two nuclei combine to form a large, heavier nucleus. This is a nuclear reaction. Nuclear reactions are of two types, fission, and fusion.
Smaller element or lighter elements like hydrogen and helium are formed by the process of nuclear fission, in which the division of element occur from smaller nuclei.
Heavier elements are formed by the process of nuclear fusion. Where lighter elements joined to create heavier elements.
Thus, the correct option is 4.
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Visualize it!
8 Apply What is another heat
exchange happening in this picture?
Answer:
Explanation:
Here in this picture two process take place ,
Conduction : Between the Mug and girl hand .
Convection: The mug contain hot tea or coffee so by process of convection ,the girl will also feel warm due to the hotness coming out from the mug.
Radiation: there is no radiation because there is neither sun light nor any fire etc.
I hope its helps u ,
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PROTONS have a _________ charge.
Answer:
Positive
Explanation:
Hope this helps!
Please give brainily!
Answer:
Protons have a positive charge
Hope this helps :)
A human baby is born with two X chromosomes. What must be true about
this baby?
A. The baby is female.
B. The baby is male.
C. The baby is haploid.
D. The baby is prokaryotic.
Answer:
A. The baby is female
Explanation:
females have two x chromosomes
males have x and y chromosones
A man with a blood genotype IAi marries a woman with a blood genotype IAi. What phenotypes could be expected in their children? 1. Both type A and type O 2. Type O only 3. Type A only 4.Type B only
Answer:
1. Both type A and type O
Explanation:
Blood genotype in humans follow the ABO system. The allele iA (type A) and iB (type B) are co-dominant but both dominant over the allele i (type O). This means that only a human with two i alleles will be type O.
Type A - iAiA or iAi (heterozygous)
Type B - iBiB or iBi (heterozygous)
Type O - ii
In this question, a man with a blood genotype IAi (type A) marries a woman with a blood genotype IAi (type A). Each of the parents will produce a gametes iA and i. Using these gametes in a punnet square (see attached image), offsprings with the following genotype will be produced: iAiA, iAi, and ii.
iAiA and iAi are type A while ii is type O. This means that both type A and type O could be expected in the children of this cross.
what is the structure of dna
Hope this helps!!!!!
During the nineteenth century, biologists knew that South America and Africa
contained similar fossils. These fossils led them to believe that a temporary land
bridge between South America and Africa allowed ancient species to move
between both continents. In the twentieth century, evidence showed that South
America and Africa were once part of the same larger continent and that there
were no land bridges between them. How should biologists respond to the new
geological finding?
Answer:
The answer is D;)
Explanation:
Answer:
D: Biologists should update the history of life, because it should include the new geological finding.
Explanation:
hope this helps :)
Help me please. Please.
Answer:
2
Explanation:
cause ice erosion.
Waterfalls
Hurricanes
Rain storms
Glaciers
Answer:
Glaciers
Explanation:
Which of the following statements correctly identifies the location of the hydrogen bonds in DNA?
Between the sugar and the phosphate of adjacent nucleotides
Between the phosphate and the complimentary nitrogen base
Between adenine and itsliyomplementary nitrogen base uracil
Between thymine and its complementary nitrogen base adenine
Answer:
answer 1
Explanation:
Answer:1
Explanation:ok
Which of these does the sun provide in large amounts?
1.glucose
2.energy
3.oxygen
4.carbon dioxide
The Answer Is Energy. :)
Answer:
Energy
Explanation:
If you're talking about plants they make their own food by photosynthesis from the Sun.
6. What type of bond does carbon make? How many bonds will one carbon make? Why
is this important in terms of the shape and structure of macromolecules?
Answer:
First answer is covalent bonding
Second answer is 4 bonds. Because carbon has 4 electrons in its outermost shell
Lastly Yes, This allows them to form strong covalent bonds with a number of elements. Carbon can also bond with itself, allowing it to form long chains or rings of carbon atoms
Describe the two negative impacts that deforestation causes concerning greenhouse gases?
Answer:
Without trees the greenhouse gases will affect our health and it will also decrease the amount of oxygen. With deforestation there will be less trees which means less oxygen as well as no shade for when we go hiking, and it will get rid of animal habitats.
Explanation:
List and describe three common defense mechanisms. Description is needed.
Answer:
1. Reaction Formation
2. Denial
3. Regression
4 .Acting Out
5. Dissociation
Explanation:
Answer:
hand-to-hand combat
a gun
heavy object (baseball bat or something like that)
Explanation:
I don't know what situation you mean, but if the person is caught off guard, the first defense mechanism is your own body, punches, kicks, stuff like that
If someone is attacking, there's a 50/50 chance that they will have a gun, in that case, the gun can be used on either side, the attacker or the attacked
If someone is attacking, it is also possible that heavy objects, baseball bats, table legs, pipes, are going to be used on either side.
Hope this helps:/
3. Describe how increased carbon dioxide emissions can affect residents of
coastal regions.
Answer:
Coasts are sensitive to sea level rise, changes in the frequency and intensity of storms, increases in precipitation, and warmer ocean temperatures. In addition, rising atmospheric concentrations of carbon dioxide (CO2) are causing the oceans to absorb more of the gas and become more acidic.
ANSWER QUCK PLS Why is it important for a cell membrane to be selectively permeable?
Answer:why is it important that the cell membrane is semi permeable? ... The solution around the cell has a lower concentration of solutes and a higher concentration of water than the inside of the cell. The cell gains water and swells. Selective permeability is a property of cellular membranes that only allows certain molecules to enter or exit the cell. This is important for the cell to maintain its internal order irrespective of the changes to the environment. ... Movement across a selectively permeable membrane can occur actively or passively.
Explanation:
hope this helps have a blessed day
compare and contrast the passive and active cellular uptake of glucose molecules and ions
Passive transport does not require energy for the transport of molecules where active transport requires energy for transport.
Active transport VS passive transport A glucose is a large molecule so its diffusion across a membrane is difficult that's why it diffuses across membranes through facilitated diffusion against the concentration gradient.While on the other hand, Active transport is the movement of molecules into or out of a cell through the cell membrane, from a region of lower concentration to a region of higher concentrationso we can conclude that passive transport does not require energy for the transport of molecules where active transport requires energy for transport.Learn more about transport here: https://brainly.com/question/25802833
Please help! I’m so stuck in bio...
Answer:
3,5,6,4,1,2
Explanation:
3.interphase is the first phase of the cell cycle and the longest where the cell grows and prepares for mitosis through dna replication
5.chromosomes form in the first phase of mitosis, prophase
6.chromosomes line up along the equator during the second phase of mitosis, metaphase
4 sister chromatids separate during anaphase
1 two new nuclei form during telphase
2 cytokinesis is the separation of cytoplasm , resulting in two daughter cells
3. Four alleles determine if a rabbit is white, brown, or gray. This is an example
of
Answer:
Principle Condominance
a) Name the type of cell division that produces cell D from cell B.
(ii) Which organ in the male body produces cell C from cell A?
Answer:
It would be Meiosis, since diploid cells gets cut which turns into haploid cells. Even though sperm and egg production is differ. They still follow the same process. -maclittleseed
Explanation:
The type of cell division is Meiosis and the male gamete produces cell C from cell A.
What are the different stages of meiosis ?The meiosis is a type of cell division which is up two types such as Meiosis I and Meiosis II, subdivided into sub phases. In prophase I disintegration in nuclear envelope, chromosomes condensed and Spindle fibres formation occur.
In Prometaphase II, Spindle fibres bind at the centromere to the chromosome where as in Metaphase I, homologous chromosomes align at the equatorial plate.
Anaphase I in which chromosomes passes towards the opposite poles and In Telophase I, Spindle fibres disappear, reformation of Nuclear envelope occur followed by Cytokinesis.
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HELPPPPP!!! ASAPPPPP!!!!
A man was diagnosed as suffering from cancer of the white blood cells. Doctors examined his chromosomes and found that chromosomes 9 and 22 were broken and the pieces had swapped places. What kind of chromosomal mutation is this?
translocation
deletion
duplication
inversion
Answer:
the answer is translocations
Explanation:
A reciprocal translocation occurs when two fragments break off from two different chromosomes and swap places.
The type of chromosomal mutation in the given scenario is translocation, the correct option is A.
What is translocation?A genetic transformation that occurs when a piece of one chromosome shatters off and adheres to another. Pieces from two distinct chromosomes will occasionally swap places.
In the given scenario, the chromosome 9 and 22 were broken and swapped, will result in translocation.
Thus, the correct option is A.
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neutral atoms have equal amounts of protons and electrons
true or false
The following steps describe a technique for producing a crop that is
resistant to insect pests.
1. Remove gene for pest resistance from a bacterial cell.
2. Place gene for pest resistance into the cell of a crop plant.
3. Grow modified plant cells in a culture to produce a mature plant.
What agricultural technique do the steps describe?
A. Selective breeding
B. Genetic engineering
C. Monoculture cropping
D. Pesticide application
Answer: genetic engineering
Explanation: A PEX learning
Can you please tell me an explanation of what happens during the metaphase stage of mitosis?
I will mark brainliest
Please dont copy and paste
Select the correct answer.
David works at an adhesive manufacturing plant. Which industrial solvent is he likely to use?
A.
ozone
B.
carbon
C. nitrogen oxide
O
D.
methyl chloroform
A plant is observed to have deep roots and tendrils that wrap around objects. Which pair of tropisms correctly describe these responses?
1.geotropism and phototropism
2. phototropism and thigmotropism
3. hydrotropism and geotropism
4.hydrotropism and thigmotropism
Answer:
4
Explanation:
The correct answer would be hydrotropism and thigmotropism.
Hydrotropism is defined as the movement of a plant or its organs to or away from moisture. The deep root growth of plants is a way of seeking or growing towards moisture that is present deep in the soil. Hence, the root is said to exhibit positive hydrotropism.
Thigmotropism, on the other hand, is the growth or movement of plants or their organs to or away from touches. In this case, the tendrils of the plant that wraps around objects they come in contact with are showing positive thigmotropism.
The correct option is, therefore, option 4.
Answer:
4
Explanation:
