How do the products of meiosis compare to the original cell? Think about chromosome number
Answer:
Meiosis is the type of cell division in which a parent cell divides into four daughter cells. ... The daughter cells produced by the meiosis contains the half chromosome number as compared with original cell (X). The crossing over occurs in meiosis and the daughter cells are quite different from the original cells.
A scientist is attempting to provide support for the hypothesis that RNA was the first genetic material. Which of the following would be a workable alternate hypothesis?
(A) RNA, like DNA, is a carrier of genetic information and contains the nitrogen bases adenine, guanine, and cytosine.
(B) RNA can be observed to self-replicate without the assistance of proteins, while DNA always requires protein-based enzymes to replicate.
(C) RNA exists in both single-stranded and double-stranded configurations; however, it is less stable compared with DNA.
(D) Transfer RNA and ribosomal RNA are products of transcription, but they are not translated as is mRNA.
Answer:
(A) RNA like DNA is a carrier of genetic information and contains the nitrogen bases adenine, guanine and cytosine.
Explanation:
RNA is a single stranded molecule which is replicating molecule that plays its role evolution of different stages. DNA is double stranded molecule that is stable under alkaline conditions and perform various functions in different body parts. RNA provides template on which DNA nucleotides assemble.
RNA can be observed to self-replicate without the assistance of proteins, while DNA always requires protein-based enzymes to replicate.
(B) is the best alternate hypothesis
What is RNA?RNA is a nucleic acid that has a single-stranded structure. RNA is also a genetic material. It helps in coding, decoding, and gene expression.
RNA was the first genetic materialRNA can be replicated by itself.It has evolved all the methods that are necessary to store genetic information.Thus, the hypothesis (B) RNA can be observed to self-replicate without the assistance of proteins, while DNA always requires protein-based enzymes to replicate is the correct option.
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which system controls the female reproductive system
Answer:
The reproductive system is controlled by the gonadotropins follicle-stimulating hormone (FSH) and luteinizing hormone (LH), which are produced by the pituitary gland. Gonadotropin release is controlled by the hypothalamic hormone gonadotropin-releasing hormone (GnRH).
Explanation:
(Endocrine)
A scientists observes several fossils in a river bed. Based on these observations, she concludes that invertebrates once dominated that ecosystem. This is an example of inductive reasoning.
True
False
Answer:
False
Explanation:
It is false because inductive reasoning is a reasoning that is not based on observations but it is based on hear say,i.e what people say, what is read or news read e.t.. Therefore it is not observed. But the above us deductive reasoning because this is based on observations, theories e.t.c. it is based on what is seen or observed.
Answer:
True
Explanation:
Inductive reasoning is a method of reasoning in which conclusion are drawn on the premise of the evidence supplied. The evidence are the tools from which conclusions are drawn but not full assurance, of the truth of the conclusion.
It could also involve the individual's experiences and observations together with what are learned from others, this together help synthesize the general truth.
The fossil serves as evidence on which the scientist based her conclusions.
IF YOU WANTED TO CREATE IN A LABORATORY A ROCK THAT HAS
LARGE CRYSTALS, WHAT CONDITIONS WOULD YOU HAVE TO
CONTROL? EXPLAIN YOUR ANSWER.
Answer:
air
Explanation:
i say air because conpressed molucues can be turned into a large crystal
Explain what causes chromosomal disorders.
Answer:
Explanation:
Some chromosomal conditions are caused via way of means of modifications within side the range of chromosomes. These modifications aren't inherited, however arise as random occasions for the duration of the formation of reproductive cells (eggs and sperm). An blunders in cell department known as nondisjunction effects in reproductive cells with an extraordinary range of chromosomes.
yw :)
What possible genotypes will the offspring have if the parents' blood types are O and AB?HELP PLEASE!!!
Answer:
. In most cases, an O parent and an AB parent will have only A or B kids.
Artificial selection is also known as survival of the fittest
true or false?
The _______________ has a negative charge. The ______________ is smaller than the other particles and can be found outside of the ___________________, which is another name for the center of the atom. In the center, there are ________________ and ___________________. The __________________ have no charge but weigh a lot compared to the ________________. The proton has a __________________ charge. In order to get the atomic mass, add the number of ________________ and _________________ together
Answer:
The electron has a negative charge. The electron is smaller than the other particles and can be found outside of the nucleus, which is another name for the center of the atom. In the center, there are protons and neutrons. The neutron have no charge but weigh a lot compared to the electron. The proton has a positive charge. In order to get the atomic mass, add the number of protons and neutrons together.
Explanation:
Answer:
electron
?
nucleus
protons
neutrons
neutrons
electrons
positive
protons
protons
neutrons
(because electrons weigh so little it dosnt make a difference)
Why is interphase an important part of the cell cycle?
Interphase is important for cell division because it allows the cell to grow, replicate its DNA, and make final preparations for cell division.
Reproductive
Physiology
Anatomy
These are the components you have to match them to these words.
Puberty
Reproduction
Climacteric and
menopause
Body image
Sexual orientation
Gender identity roles
Families
Friendships
Loving, liking, and caring
1&4 2&5 3&6 7&8+9 that is the answer i think
cells extract energy from nutrients in a structure known as the powerhouse of the cell, or the
Answer:
I remember this from 5th grade hahahaha !
The power house of the cell is the Mitochondria!
the ideal temperature at which to study the effect of proteases
Answer:
the answer is 37°C.
Explanation:
The ideal temperature at which to study the effect of proteases on protein is 37°C. Why are higher temperatures not advisable? This could result in an irreversible denaturing of the protein.
Which contains mostly hydrocarbons?
carbohydrates
proteins
salt
gasoline
Answer:
gasoline
Explanation:
hope that is help you haha
Answer:
gasoline
Explanation:
Order the following steps in the pyruvate dehydrogenase reaction. The answer is scored as ALL OR NOTHING, so all steps must be in the correct order for credit.
a) Pyruvate and thiamine pyrophosphate react form hydroxyethyl-TPP. CO2 is released.
b) The reduced coenzyme bound to PDH is reoxidized using electrons from FAD.
c) An acetyl group is added to a coenzyme bound to PDH, forming acetyl-dihydrolipoamide.
d) The acetyl group is transferred to CoA, forming acetyl-CoA.
e) Electrons from FADH2 are transferred to NAD+ forming NADH and H+.
Answer:
The correct order is:
1.- pyruvate and thiamine pyrophosphate react form hydroxyethyl-TPP, CO2 is released
2.- an acetyl group is added to a coenzyme bound to PDH, forming acetyl-dihydrolipoamide
3.- the acetyl group is transferred to CoA, forming acetyl-CoA
4.- the reduced coenzyme bound to PDH is reoxidized using electrons from FAD
5.- electrons from FADH2 are transferred to NAD+ forming NADH and H+
Explanation:
Pyruvate reacts with thiamine pyrophosphate (TPP) on the complex enzyme pyruvate dehydrogenase (E1). This process cleaves CO2 and generates acetaldehyde bound to TPP or hydroxyethylamine. E2 is Dihydrolipoyl-transacetylase and has Lipoamide attached. In the transfer from E1 to E2, the hydroxyethyl is oxidized to acetyl, at the same time that the disulfide bridge of the lipoamide is reduced to dihydro-lipoamide, although as this is acetylated, the product is acetyl-dihydrolipoamide. Acetyl group of acetyl-lipoamide (thio-acyl bond) is transferred to CoA-SH, to form Acetyl-S-CoA (thio-acyl bond).Acetyl-CoA is released into the mitonchondrial matrix. Lipoamide is reduced as Dihydro-lipoamide. The last reaction is catalyzed by dihydrolipoyl dehydrogenase, where it is reestablished in the disulfide bond of lipoamide to make it reactive again. For this, FAD is used as an intermediate, which is reduced to FADH2 and oxidizes the sulfides (which are then linked again). Finally, FADH2 reacts with NAD, which is reduced to NADH and H+ released, restoring FAD for a new reaction.
6. Type of energy that can travel through space in the form of waves.
Answer: u can say either Radiant energy or electromagnetic waves
Explanation:
Radiant energy is the energy of electromagnetic waves. These waves can travel through space.
Chlorofluorocarbon molecules are environmentally significant because
a.their chlorine atoms can destroy many stratospheric ozone molecules.
b.they are poisonous, flammable, and corrosive to metals.
c.their absorption of lethal solar energy protects Earth.
d.they readily break down ozone molecules produced as pollution
Answer:
their chlorine atoms can destroy ozone molecules
Explanation:
while looking at layers of rock you notice three fossils which one died most recently?
a) the one in the middle
b) the one on bottom
c) none of them
d) the one on top
What is the main difference between active and passive sonar
Answer:
There are two kinds of sonar: One is passive sonar, and the other is active sonar. For passive sonar, we don't send sound waves but just receive them. By listening to these special sound waves, animals that communicate with these particular sound waves can be detected. By listening to the sound waves from engines of submarines or ships, we can locate them.
Also, other things that vibrates can be detected by passive sonar. Many threats on the sea are usually detected by passive sonar this way. Since passive sonar does not transmit any thing to the environment, it does no harm to other animals. Active sonar is a little different.
Besides having a receiver, active sonar also transmits sound waves. Active sonar works by transmiting particular sound pulse and measuring the length of time for the sound to be reflected back, then devide the time by 2 to get the time it takes for the sound pulse to reach the object
issues related to the Amazon rainforest
DO ALL OF THIS RIGHT NOWWWW INNUDUJJXO,XSL,SOKJ757N&3K8
YEE HAWW
Answer:
Why yelling-
Explanation:
May I have brainliest please I'm trying to level up!
</3 PureBeauty
Do you think an advanced civilizations may exist in the universe? Why or why not?
Answer:
Many other planets throughout the universe probably hosted intelligent life long before Earth did, a new study suggests.
The probability of a civilization developing on a potentially habitable alien planet would have to be less than one in 10 billion trillion — or one part in 10 to the 22nd power — for humanity to be the first technologically advanced species the cosmos has ever known, according to the study.
"To me, this implies that other intelligent, technology-producing species very likely have evolved before us," said lead author Adam Frank, a professor of physics and astronomy at the University of Rochester in New York. [13 Ways to Hunt Intelligent Alien Life]
In 1961, astronomer Frank Drake devised a formula to estimate the number of extraterrestrial civilizations that may exist today in the Milky Way.
Adam Frank and co-author Woodruff Sullivan of the University of Washington were interested in the odds that intelligent aliens have ever existed anywhere in the universe. So they tweaked the famous Drake equation, coming up with an "archaeological version" that doesn't take into account how long alien civilizations may last.
Frank and Sullivan also incorporated observations from NASA's Kepler space telescope and other instruments, which suggest that about 20 percent of all stars host planets in the life-friendly, "habitable zone," where liquid water could exist on a world's surface.
- A Chiefs Fan (but Watkins could look a little better...)
Which elements will have the same properties? A. Boron, Carbon, Nitrogen B.Gold, Silver, Titanium C. Beryllium, Magnesium, Calcium D. hydrogen, helium hassium
Answer:
b
Explanation:
it would be silver and gold hope helps
Name one photosynthesis organism and how it affects the plant.
Answer:
Hey!
Explanation:
Plants like Sunflowers are organisms that use photosynthesis, and photosynthesis makes it so where the plant can get energy out of Radiant Energy. Hope this helps!
Flow
Explain why countercurrent flow met the goals and why parallel flow did not meet the goals.
Answer:
Fish utilise a counter-current system in order to maximise the amount of oxygen that can extracted from water. Water has a much lower oxygen content than air and as such fish need a much more efficient system that can extract a much higher proportion of oxygen from the surrounding water.
Explanation:
Counter flow created more movment and chaos, it made the molecules bump into each other more often, which makes it more likely that each individual partivle will go out of the pores. whereas parelel flow the particles move neatly along side one another
PLEASE LEAVE A THANKS AND RATE THIS ANSWER 5 STARS, YOU DO NOT NEED AN ACOUNT TO DO THIS!THANKSWhy would fog dispersion be useful?
Answer:
Fog dispersal, artificial dissipation of fogs, usually by seeding or heating. ... It is done primarily at airports to improve visibility.
Look at the following chemical reaction.
Which process is happening in the reaction that is shown?
A. Dehydration
B. Acidization
C. lonization
D. Hydrolysis
Answer:
Dehydration, sorry if its wrong
Explanation:
Hydrolysis is happening in the reaction. Hence the correct option is D.
Hydrolysis is a chemical process that involves the breaking down of a compound through the addition of water. During hydrolysis, a water molecule splits into hydrogen and hydroxide ions, which participate in the cleavage of the chemical bond within the compound, resulting in the formation of two or more new substances.
Hydrolysis reactions are found in various natural and synthetic processes. In the context of biomolecules, such as proteins, carbohydrates, and fats, hydrolysis plays a fundamental role in their digestion and utilization. In industrial processes, hydrolysis is also employed to break down complex molecules into simpler components.
Hence the correct option is D.
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.. Which pair of organisms is most likely to have adaptations in common?
Answer: the 1st one
Explanation:
A grassland predator and prey, such as a cheetah and a zebra. Therefore correct option is (A).
What organisms have common adaptations?The pair of organisms that is most likely to have adaptations in common is a pair of organisms that share similar environmental pressures or ecological niches. Organisms that occupy similar habitats, have similar diets, or face similar challenges are more likely to evolve similar adaptations over time.
For example, predatory animals such as lions, tigers, and leopards have evolved similar adaptations such as sharp claws, powerful jaws, and keen senses to help them catch prey. Similarly, desert-dwelling animals such as camels, kangaroo rats, and fennec foxes have adaptations such as the ability to conserve water, tolerate heat, and dig burrows in sandy soil to survive in their arid environments.
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Besides providing energy, how do plants directly benefit the deer and the
wolf?
Answer:
they release oxygen
Explanation:
i dont know its just what i think
In 2003, scientists completed the Human Genome Project, in which they completed the mapping of the human genome. Which is one way that the
Human Genome Project, along with later mapping efforts, has affected the individual and society?
O A. Individuals may now modify their genes to prevent acquired diseases, such as bacterial infections.
O
B. Individuals may now modify their genes to alter traits such as height, eye color, and hair color.
C. Individuals may now select which genes to activate or deactivate.
D. Individuals may now have their DNA analyzed to determine ancestry.
Answer: D. Individuals may now have their DNA analyzed to determine ancestry.
Explanation: