Answer:
D
Explanation:
Blastocyst refers to a fertilized egg after the cells have begun to differentiate. So, the correct option is A.
What is Blastocyst?A ball of cells known as a blastocyst develops in the first five to six days of pregnancy, shortly after a sperm fertilizes an egg. It embeds itself in the uterine wall, developing into an embryo and subsequently a fetes.
A healthily developed embryo will include six to ten cells three days following fertilizations. The fertilized egg develops into a blastocyst, a rapidly growing ball of cells, on the fifth or sixth day. The innermost collection of cells will develop into the embryo. The outer group will develop into the cells that support and safeguard it.
Within the first two weeks following conception, a developing, fertilized egg is known by a variety of names, include zygote, morula (day 4), or blastocyst (day 5). About 10 weeks after the previous menstrual cycle, or 8 weeks after conception, the embryonic period begins.
Therefore, the correct option is A.
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Write down the word and chemical equition of photosynthesis process
Answer:
The photosynthesis equation is as follows: 6CO2 + 6H20 + (energy) → C6H12O6 + 6O2 Carbon dioxide + water + energy from light produces glucose and oxygen.
Explanation: (credit to Chris Hall in Quora)
On the geological scale, the equation for photosynthesis would be the opposite of combustion/respiration: carbon dioxide and water molecules converted into oxygen and carbohydrate (or hydrocarbon) molecules (one unit of -CH2O- per CO2).
However, such a simplistic formula is extremely misleading, especially when talking about individual plants and algae instead of macro-geo-chemistry. The oxidation of water to oxygen (aka the light reactions) is a separate (but concurrent) process from the reduction of carbon dioxide to carbohydrate or hydrocarbon (aka the dark reactions). See my answer to a similar question here: Chris Hall's answer to Where is the most detailed chemical structure breakdown of all steps of photosynthesis that is reliable?
Some bacteria, algae, and plant cells only perform one half of the typical photosynthetic pathway, either to produce energy without making sugar/hydrocarbon or to assimilate carbon dioxide using stored chemical energy rather than using light directly (similar to chemosynthesis). And some bacteria do photosynthesis without making oxygen at all, using sulfur in the place of oxygen.
In short, photosynthesis should be thought-of as a series of sequential processes and not as a single chemical reaction.
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is chemical reaction between limestone and acid in groundwater responsible for its formation
Answer: Geysers are water that comes out of the ground spurting into the air, wetlands are self-explanatory, while volcanoes are full of magma, not of acid and limestone.The upper layers of soil above the groundwater contains carbon and limestone. The water being combined with carbon becomes acidic which erodes limestone this results in formation of sinkholes and caves.
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Explanation:
Which of these is a secondary crop?
A. Sugar
B. Latex
C. Wheat
D. Plums
Answer:
B I think. let me know if I'm right because I might be wrong.
Answer:
D. Plums
Explanation:
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There are several mechanisms through which reproductive isolation occurs. Which situation is an example of behavioral isolation?
A.
Mules, the offspring of a male donkey and a female horse, are unable to reproduce because they are sterile.
B.
Males of different, closely related species of fireflies signal for mates by flashing different light sequences.
C.
The reproductive organs of snails only properly align when the male and female belong to the same species.
D.
Red and purple sea urchins cannot reproduce with one another because the sperm and egg cannot fuse.
Answer: B. Males of different, closely related species of fireflies signal for mates by flashing different light sequences.
Reproductive isolation refers to the inability of the members of a species to breed with members of other species. Behavioral isolation is a type of reproductive isolation, in which mating between the members of the species is facilitated by their behavior. It helps members of the same species to identity their mates. It prevents mating between population of distinct species.
Males of different, closely related species of fireflies signal for mates by flashing different light sequences is an example of behavioral isolation because flashing of light by fireflies is the behavioral characteristic which shows their desire for mating. The mates identify the light signals flashed by their partner belonging to the same species.
Answer:
B. Males of different, closely related species of fireflies signal for mates by flashing different light sequences.
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Explanation:
A diploid cell undergoes meiosis, usually producing
Answer:
GAMETES
Explanation:
Most of the cells in your body are diploid, germ line diploid cells will undergo meiosis to produce gametes
why do you think slate might be denser then shale?
Answer:Slate is denser than shale because its atoms and molecules become more compact due to the presence of intense pressure. Due to this event, the minerals are squeezed and realigned in such a way that the axes are directed to where the pressure was applied.
Explanation:
In what type of organs are the cells that enter meiosis 1 found
Answer:
gonads, ovaries and testes
Explanation:
if im right, can i get the crown
Describe how population studies can be conducted in a school garden
Answer:
Population studies look at factors for one individual species.
Explanation:
In a garden, there are multiple species of plants growing. You could study different factors of each population, which is just all the individuals of one species in an area. For example, you could study how adding fertilizer affects the growth of tomato plants. To do this, you would have some tomato plants in the garden that have fertilizer added to the soil and some that don't. At the end of a certain period of time, maybe a month, measure the plants, find the average height and compare their growth. This is just one example, but there are lots of different things you could study.
Name three different types of this nucleic acid found in a cell
Answer:
RNA and DNA are the main ones, but mRNA and rRna are some, too
Explanation:
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2. These molecules capture energy from the sun during cellular respiration and
give plants their green pigment.
*
Xanthophyll
Chlorophyll.
Thylakoids
Grana
Answer:
B
Explanation:
your answer is chlorophyll 100% positive
Directions: Select the correct diagram.
The diagrams below represent the fossils of shellfish in four hypothetical cross sections of a canyon. The top layers are the
youngest layers, and the bottom layers are the oldest
Which cross section could be used as evidence that, over time, a circular shellfish descended from a hexagonal shellfish?
1
2
3
Answer:
The answer is number 4
Explanation:
Cross section 4 contains evidence that a transition from a hexagonal shellfish to a more a rectangular shellfish and then to a circular shellfish may have occurred. These changes would have been gradual, as shown by the position of the fossils in each layer of the canyon.
Although the evidence provided by cross section 4 is strong, more research would be needed to prove a connection among the shellfish in the canyon, such as morphological or
The cross-section in diagram 4 could be used as evidence that, over time, a circular shellfish descended from a hexagonal shellfish. Hence, option D is correct.
What are fossils?Fossils are the remains or traces of ancient living organisms that have been preserved in sedimentary rocks or other materials over long periods of time. Fossils can include bones, teeth, shells, imprints, or other parts of plants and animals that have been mineralized, or turned into rock, over millions of years.
They are important clues to the history of life on Earth, providing evidence of the evolution of different species and the environmental conditions that existed in the past.
Fossils can be studied by paleontologists to learn more about the biology and ecology of ancient organisms, as well as to understand how the Earth's ecosystems have changed over time. Hence, option D is correct.
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What term describes a type of active transport where the cell membrane forms a pocket around liquids and then folds it into the cell by a vesicle?
Answer:
Endocytosis is the process of capturing a substance or particle from outside the cell by engulfing it with the cell membrane. The membrane folds over the substance and it becomes completely enclosed by the membrane.
Explanation:
When water TRANSPIRES from the stoma into the atmosphere, what phase is it in?
Answer:
it's called transpiration when stomata opens and release extra water
Cómo los avances de la ciencia y la tecnología sin control puede llegar a afectar al ser humano, demás seres vivos y el entorno.
Answer:
nuevas tecnologías y desarrollos científicos muchas veces conllevan un potencial para generar daños irreversibles sobre las poblaciones humanas y el medio ambiente
Explanation:
Los avances científicos y tecnológicos conllevan grandes ventajas para la humanidad y simultáneamente también riegos que pueden producir daños irreparables en las sociedades y el medio que las rodea. Por ejemplo, el dominio de la tecnología basada en el uso de la fisión nuclear ha sido beneficioso para obtener grandes cantidades de energía, pero también este desarrollo conlleva la producción de armamento nuclear que pone en riesgo a las sociedades y al medio ambiente. Otro ejemplo puede estar representado por el uso de la tecnología de edición genómica CRISPR-Cas, la cual ha sido recientemente desarrollada. Esta tecnología ha llevado esperanza para el tratamiento de enfermedades genéticas hereditarias a través de la restauración de la función génica. Sin embargo, la técnica CRISPR-Cas de edición genómica ha sido recientemente utilizada para desarrollar bebés editados genéticamente, aún cuando los efectos secundarios que dicha tecnología no han sido completamente resueltos (efectos de edición genómica en regiones genómicas no deseadas), con lo cual llevando un serio riesgo para los bebés que han sido modificados genéticamente. De este modo, cada avance científico tecnológico debe estar apropiadamente regulado por las sociedades a fin de evitar los potenciales efectos dañinos de dichos avances.
Hemoglobin a protein found in red blood cells, carries oxygen. Abnormal hemoglobin cannot carry as much oxygen as normal hemoglobin. The sequences below show sections of the DNA sequence that produce both the normal and abnormal types of hemoglobin.
Normal DNA sequence: GGA CTC CTC
Abnormal DNA sequence: `GGA CAC CTC
~Write the messenger RNA sequences that would be produced from the normal and abnormal DNA sequences shown above.
~What is the purpose of Transcription?
Answer:
Each subunit surrounds a central heme group that contains iron and binds one oxygen molecule, allowing each haemoglobin molecule to bind four oxygen molecules. Molecules with more oxygen bound to the heme groups are brighter red.
I hope I answer your question
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What types of organisms give the soil essential nutrients for new plants to grow?
A.
primary consumers
B.
secondary consumers
C.
producers
D.
decomposers
Answer:
D. decomposers
Explanation:
primary, secondary consumers and producers all eventually die. Decomposers break the dead organisms down to nitrogen, carbon and other basic elements that can then be used as nutrients for the new plants.
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Answer:
Explanation:
A. Kidney
B. Ureters
C. Dialysis
Explanation:
FIRST - A
SECOND - D
THIRD -A
FOURTH - C
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Kendra wonders what would happen if the oceans did not exist on Earth. Based on her understanding of the oceans and the water cycle she predicts that Earth would become warmer, with less rain, more clouds, and that living things would not survive. Which part of her prediction is incorrect?
A) That living things would not survive
B) That Earth would get warmer
C) That there would be less rain
D) That there would be more clouds
Answer:
That there would be more clouds is the incorrect answer
Explanation:
Which of the following best summarizes how hormone levels are controlled?
Hormones are controlled by a feedback loop; information about a system is sent back to the controller of the system to improve its function.
Hormones are controlled by oxygen levels; the internal environment maintains all systems, including endocrine functions.
Hormones are controlled by muscles; hormones are released when muscles contract and stopped when muscles relax.
Hormones are controlled by the nervous system; the spinal cord sends messages about hormone levels to the brain.
Answer:
The answer is A
I took the quiz and got it right
Answer:a
Explanation:
Which greenhouse gas contributes most to the positive radiative forcing that
is increasing global surface temperatures?
Answer:
c
Explanation:
To which structure does an anticodon bind?
Answer:
the anticodon sequence will blind to the codon of the mRNA
Plz help me I dont know this
Answer:
Primary - 500
Secondary - 50
Teritary - 5
Which two types of organisms are found in the domain Eukarya?
A. Archaea
B. Animals
C. Bacteria
D. Protists
Answer:
d and b
Explanation:
I have done middle school science.
Answer:
D. B.
Explanation:
These two types of organisms are found in the domain Eukarya.
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What type of pressure means the air around you is densely packed?.
In the atmosphere, the density of air debris decreases with height, with greater fuel online debris the last close to the floor of Earth. When simplest thinking of humidity, dry air is greater dense than wet air due to the molecular weights of the gases.
Solids have a tendency now no longer to transport very much - they have an exact form and normally live wherein they are put. Liquids and gases then again are lots greater willing to transport - they are fluid. That's why fluid is both a liquid and gas.
What is atmospheric pressure?It is described as the pressure in the atmosphere also called barometric pressure, within the earth's atmosphere.
Hence concludes that the air around you is densely packed due to the fact that The accurate announcement is denser exerts extra strain than much less dense air. Explanation: that is due to the fact with the boom in the density there are extra molecules of air that can be packed inside a selected extent of air.
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Protons are made up of ____ up quarks and one down quark
PLEASE HELP ME mendel studied heredity by experimenting with
A.hybrid
B. recessive
C. pea plants
D. gregor mendel
E. genes
F. are the same
G. dominant
H. pure
I. two
Answer:
Pea plants mendel used pea planta
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Which two factors will increase the rate of a stream’s flow?
Answer:
Flood Erosion and Deposition: As flood waters rise, the slope of the stream as it flows to its base level (e.g., the ocean or a lake) increases. Also, as stream depth increases, the hydraulic radius increases thereby making the stream more free flowing. Both of these factors lead to an increase in stream velocity.
Explanation:
Flood erosion and deposition, as flood waters rise, the stream's slope rises as it descends to its base level, which may be an ocean or a lake.
What is the stream’s flow?Additionally, when stream depth rises, the hydraulic radius rises as well, increasing the stream's ability to flow freely, these two elements cause the stream velocity to rise.
The volume of water flowing into a stream channel from the watershed directly affects the stream's flow. The weather has an impact on it; it rises during downpours and falls during dry spells.
The force of gravity, which pushes water downhill, is what gives moving river water its energy. A river will flow more quickly and with greater energy at a higher slope.
Therefore, flood erosion and deposition factors will increase the rate of a stream’s flow.
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Explain why scientirsts concluded that the instructions for species characteristics were carried in DNA.
Answer:
Explanation:
Deoxyribonucleic acid is said to contain instruction for species characteristics because it carries the information that characterize an individual.
DNA are made up of Nitrogenous bases that are unique codes specify by an individual and no two person has the same the DNA.
Genes are genetic information or instruction that specify an individual. it is located in the chromosome in the nucleus. DNA contains gene which helps to make molecules called proteins. It is the basis of all inheritance and the expression of the gene is what produces the phenotype that is visible.
name 2 types of reproduction
Answer:
asexual and sexual reproduction
Explanation:
Though asexual reproduction is faster and more energy efficient, sexual reproduction better promotes genetic diversity through new combinations of alleles during meiosis and fertilization.
Which nation would be CLOSEST to the command side on this economic
continuum?
O the United States
O the United Kingdom
O France
O North Korea
Answer: D) North Korea
==============================================================
Explanation:
The United States, the United Kingdom, and France are all countries that have capitalistic economies. This means that (for the most part) private industry and the market determines what products are produced and who gets those products. I said "for the most part" because these countries don't follow a purely capitalistic structure. There are some elements of government regulation to ensure that no breakdowns occur. The regulations are also to ensure some level of fairness as well, in addition to preventing things like fraud.
On the other hand, countries like North Korea are known as command economies because the government determines what products are to be made and they determine who gets the products. This means that they set the prices as well to whatever they feel is correct (even if the market may disagree otherwise). The term "communism" is often strongly connected to the term "command economy".