If a uranium atom alpha decays and emits a helium nucleus, the atomic number of the daughter nucleus is 90.
Alpha particle is a helium nucleus thus decay of alpha particle is decay of 42He
42He = α with emission of helium nucleus emit energy (Q)
Thus mass number decreased by 4 and atomic number decreased by 2 of daughter nucleus.
Alpha decay represented by
AZX → A-4Z-2Y + 42He + Q
So alpha decay of U-238 represented by
23892U → 23490Th + 42He + Q
After alpha decay of U-238 formed daughter nucleus Th – 234 and He -4
Atomic number of daughter nucleus = 90
With the atomic number 92 and the chemical symbol U, uranium is one of the elements. The actinide series of the periodic table contains this silvery-gray metal. 92 protons and 92 electrons, of which 6 are valence electrons, make up one uranium atom .
Learn more about uranium atom here:
https://brainly.com/question/8991357
#SPJ4
Researchers found e. Coli that had mutation rates 100 times higher than normal. What is a possible explanation for these results?.
Possible explanation for these results is that the proofreading mechanism of DNA polymerase was not working properly.
How is the proofreading process explained?Proofreading mechanisms are crucial for reducing the rate of mutation in a newly generated DNA molecule during DNA replication.
DNA polymerase 3 reads the daughter DNA strands in a 3" to 5" orientation by exonuclease activity, which is how the proofreading activity is carried out.
Incorrect bases are excised and replaced with the right bases by DNA polymerase 3's proofreading activity if they are discovered in the daughter DNA molecule.
Therefore, proofreading aids in reducing the mutation rate in freshly generated DNA molecules.
TO know more about proofreading mechanism visit:-
https://brainly.com/question/22081365
#SPJ4
During osmosis, the semi-permeable membrane is one that:
A. does not allow any particles to pass through.
B. allows only very small particles or water through.
C. allows only very large particles through.
D. decides what particles to let through based on cell signals.
During osmosis, the semi-permeable membrane is one that: (B) allows only very small particles or water through.
Osmosis is the process of movement of solvent molecules from their area of high concentration to the area of low concentration through a semi-permeable membrane. This process does not require any energy for the movement of solvent. This phenomenon is applied during the dialysis of blood.
Semi-permeable membrane (SPM) is a fine partition either natural or synthetic that allows the movement of solvent molecules only through it. The example of natural SPM is cellulose, egg membrane, etc. and of synthetic SPM is cellophane.
To know more about osmosis, here
brainly.com/question/1799974
#SPJ1
What is a glycoprotein? where are they found in human cells? list some of their functions.
They are molecules that consists of protein and carbohydrate chains which are involved in many physiological functions including immunity.
Glycoprotein consists of protein and carbohydrate which are involved in physiological function and also helps in immunity . They are excreted from inside the cells that express their genes and pushed to the surface.
Glycoprotein helps in many physiological functions like reproduction ,protection of cells of organism , balancing immune system . They are present on the surface of the lipid bilayer of cell membrane .In human they helps the organ system to communicate with each other and in plant they allow plants to stand upright against the force of gravity.
To learn more about Glycoprotein , here
brainly.com/question/15007631
#SPJ4
What are the negative aspects of monoculture (e.g. an area only planted with palm rather than a
forest with diversity)? Select all that apply.
The negative aspects of monoculture (e.g. an area only planted with palm rather than a forest with diversity) is:
prone to pests and disease; option BWhat is monoculture?Monoculture is an agricultural method in which only one type o crop is planted in a given area of land.
Monoculture is used mostly in large-scale farming where a large amount of one type of crop is reared in a large area of land.
There are some advantages as well as disadvantages of monoculture.
The advantages of monoculture include:
increases efficiency in planting and harvesting,lowers the costs of production for farmers,allows farmers to use farm machineryresults in higher yieldsThe disadvantages of monoculture include:
it destroys soil nutrients due to a lack of diversityresults in the use of harmful chemicalspollutes groundwater supplies due to the use of chemicalscrops are prone to pests and diseasesLearn more about monoculture at: https://brainly.com/question/5306825
#SPJ1
Complete question:
What are the negative aspects of monoculture (e.g. an area only planted with palm rather than a forest with diversity)?
Select all that apply.
improves crop yield
prone to pests and disease
results in diversity
results in increase soil fertility
In the movement of small molecules across a lipid bilayer, the permeability coefficient can be correlated with.
In the movement of small molecules across a lipid bilayer the permeability coefficient can be correlated with the solubility of the molecule in a nonpolar solvent.
Non-polar molecules dissolve in the phospholipid region of the cell membrane and pass without the need for additional protein transporters. Small hydrophobic molecules and gases such as oxygen and carbon dioxide pass quickly through the membrane. Small polar molecules like water and ethanol can also pass through the membrane, but more slowly.
A conformational change in the channel moves the second-site potassium ion away from the protein. When a second potassium ion binds to the first site, electrostatic repulsion occurs and helps dislodge the potassium ion from the second site. Permeability decreases with charged or larger molecules. The structural features of these molecules do not affect membrane fluidity. Expression of permeability of molecules across membranes based on molecular size and charge.
Learn more about A lipid bilayer here:-https://brainly.com/question/350407
#SPJ4
The process of chromosomes independent assortment takes place during?
Answer:
Anaphase of Meiosis I
Explanation:
The independent assortment of chromosomes takes place during the Anaphase of Meiosis I .
Related info :-
Law of Independent assortment was given by G J Mendel .This law was was based on the results of dihybrid cross .This law is applicable only when two genes under consideration are on different chromosomes.This law is one of the most criticized law in genetics ( exception is linkage.)Rock formed deep underground where heat and pressure
cause existing rocks to be changed
- Sedimentary rock
- Energy
- Igneous rock
-Metamorphic rock
- Rock cycle
Answer: Metamorphic rock
A cell containing 12 replicated chromosomes at the beginning of mitosis will have how many chromosomes after the completion of mitosis?.
Cell containing 12 replicated chromosomes in beginning of mitosis. There are 12 chromosomes after the completion of mitosis.
What is Mitosis?Two genetically identical daughter cells are created during mitosis, along with the original cell. A diploid cell has 2X DNA and 2N chromosomes at birth. The cells are still genetically diploid (2N chromosomal number) after DNA replication, but they contain 4X as much DNA because each chromosome has done so. A united pair of identical sister chromatids make up each chromosome today. Two identical cells with 2N chromosomes and 2X DNA each emerge from mitosis.
Chromosomes condense during prophase; each chromosome is made up of two identical sister chromatids that are linked at the centromere.In the metaphase, the spindle apparatus' microtubules push and tug the chromosomes into alignment along the plane of cell division in the center of the cell.Chromatids start to decondense and congregate at the opposing ends of the cell during telophase.The membrane pinches in during cytokinesis to split the two daughter cells.To know more about mitosis, visit:
https://brainly.com/question/26678449
#SPJ4
A sample of krypton gas occupies a volume of 8.67 L at 43.0°C and 0.470 atm.
If it is desired to decrease the volume of the gas sample to 6.23 L, while increasing its pressure to 0.647 atm, the temperature of the gas sample at the new volume and pressure must be
The temperature of the gas sample at the new volume and pressure must be 65.74 T
What do you mean by volume and pressure?
Pressure is force (in newtons, N) divided by the area ( in square meters, m2 ) over which it acts (P = F/A). Volume is the amount of space is taken up by an object or, in our case, a parcel of gas.
The volume of a given amount of gas is inversely proportional to its pressure when temperature is held constant (Boyle's law). Under the same conditions of temperature and pressure, equal volumes of all gases contain the same number of molecules (Avogadro's law).
Hence, for a fixed mass of an ideal gas kept at a fixed temperature, pressure and volume are inversely proportional. Or Boyle's law is a gas law, stating that the pressure and volume of a gas have an inverse relationship. If volume increases, then pressure decreases and vice versa, when the temperature is held constant.
Learn more about pressure and volume:
https://brainly.ph/question/29241741
#SPJ1
Which of the following is not a type of cell?
Group of answer choices
A. protein cell
B. blood cell
C. skin cell
D. nerve cell
Answer: A. protein cell
Explanation: blood cells, skin cells, and nerve cells are all parts of your body. However, proteins make up your cells, they are not actually your cells.
" Which of the following is NOT considered a fossila) bones
b) animal feces
c) footprints
d) none of the above "
None of the above. Bones, animal feces and footprints are fossil.
What is a fossil? A fossil is the tangible representation of an ancient plant or animal. This could be their preserved remains or other traces, like marks they left in the ground while living. Body fossils are fossilized remains, such as fossil bones and teeth.Trace Fossils and Body Fossils. Body fossils are fossilized bones, teeth, and shells. The vast majority of dinosaur fossils are assemblages of body remains.Paleontologists look at the surfaces of prospective fossils as well. They are most likely rocks if they are smooth and lack any discernible texture. Even though it is fashioned like a bone, if it lacks the proper texture, it is most likely a rock.To learn more about fossil refer,
https://brainly.com/question/11224681
#SPJ1
Please help with this problem
Answer:homozygous dominant, heterozygous and homozygous recessive
Explanation:
RR is homozygous dominant, 2Rr are heterozygous and rr is homozyqous recessive
© 1. What type of cell is this? What characteristics helped you decide the type of cell? (Identify form/structure.) What is this cell's function?
This is a nerve cell that aids the nervous system. offer structural support for the body, ingest nutrients from meals, transform those nutrients into energy, and perform specific tasks.
What function do nerve cells fulfill?Your brain's neurons, also known as nerve cells, transmit and receive signals. Neurons are morphologically and functionally unique from other cell types, yet having many traits in common with them. Axons are specialized extensions that allow neurons to send electrical and chemical signals to neighboring cells.
What is the nerve cell's structure?One long extension (axon) for sending impulses and typically several branches (dendrites) for receiving impulses make up the big cell body that makes up a nerve cell (or neuron). The dendrite of one cell receives impulses from the axon that travel across a synapse, or the junction between two nerve cells.
To know more about nerve cells visit:
https://brainly.com/question/2681723
#SPJ1
How could you observe evidence of the cycling of water in a terrarium?
Answer:
When you set your terrarium in the sun the water inside the terrarium will heat up and turn into water vapor in the air. This is called evaporation. When the water cools back down, it turns back into a liquid. You will see condensation water droplets sticking to the lid of your terrarium.
Explanation:
During mitosis, it is necessary for the nuclear envelope of the parent cell to disintegrate. If the enzyme responsible for this is inhibited, at which phase of mitosis are cells likely to arrest?.
Cells that are in the prometaphase of mitosis are prone to arrest.
When does the nuclear envelope separate from the nucleus during mitosis?During prophase, the nuclear membrane separates, the nucleolus disappears, and the chromosomes condense.
Why does the nuclear envelope separate during mitosis?The nuclear envelope separates during the beginning of mitosis as a result of cyclin-dependent kinase. Phosphorylation of INM proteins modifies their interactions with chromatin. Nuclear envelope collapse is necessary for sister chromatid segregation.
The nuclear envelope has what purpose?The nucleus is encircled by a double membrane known as the nuclear envelope. The largest single organelle in a cell is the nucleus.. The nuclear envelope separates the contents of the nucleus from the outside of the cell. The organism's genes are found on chromosomes.
To know more about Prometaphase visit:-
https://brainly.com/question/13244347
#SPJ4
_____ on mrna interact with _____ on trna to allow the _____ to connect amino acids in the correct order during translation.
The proper succession during translation. ribosome, codons, and anticodons.
What substance acts as the adaptor, connecting the amino acids and mRNA during translation?RNA small molecule Transfer RNA, also referred to as tRNA, is necessary for the synthesis of proteins. Transfer RNA, also known as an adapter, links the messenger RNA (mRNA) molecule to the growing chain of amino acids that constitutes a protein.
In this translation quizlet, we will examine how the amino acids are connected.In a certain order determined by genes, amino acids form peptide bonds and join together. The length and arrangement of the amino acid chain determines the three-dimensional structure of a polypeptide or protein after RNA translates genes into amino acid chains.
To know more about amino acids and mRNA visit:-
https://brainly.com/question/20552252
#SPJ4
What enzyme moves outward from the origin of replication and breaks hydrogen bonds between dna nucleotides?.
As the helicase moves away from the point of origin, it breaks hydrogen bonds between DNA nucleotides.
What enzyme splits DNA before the replication process begins?Helixases are enzymes that bind to and may even modify nucleic acid or nucleic acid protein complexes. Both helicases for DNA and RNA are available. DNA helicases are required for DNA replication as they separate double-stranded DNA into single strands, allowing for the independent replication of each strand.
Which enzyme precedes DNA helicase during DNA replication?In procaryotes, the primase molecule and a DNA helicase come together to create a structure called a primosome on the lagging strand.
To know more about Helicase visit:-
https://brainly.com/question/24162487
#SPJ4
This body part in squids allows them to propel themselves rapidly by sucking in through the mantle and out through the ___________.
This body part in squids allows them to propel themselves rapidly by sucking in through the mantle and out through the funnel.
Squids are capable of propulsion.Squids propel themselves out of the water using the same method they use to move through it: they fill up their mantle with water and then force it out at incredibly high pressures and speeds.
What bodily motions do squids make?the backfin The muscle of the paired tail fin connects to the top of the mantle. The gigantic squid moves through the water with the help of its longitudinal fin undulation.
The squid travels through the funnel with exact jet propulsion. With this method of propulsion, water is drawn into the mantle chamber and immediately discharged into the funnel.
To know more about propulsion visit:-
https://brainly.com/question/13757534
#SPJ4
2.
In the figure below, B, C and D together are called?
Label the parts of the cell cycle diagram and briefly ...
mitosis
prophase
interphase
synthesi
Answer:
we need you to add an image of the diagram please :)
Explanation:
:)
4. The radiometric dating of an igneous rock provides
•
the date the rock was eroded
•
the date of Earth's formation
O
the date of the rock's formation
the relative age of the rock
The radiometric dating of an igneous rock provides the relative age of the rock
What is radiometric dating ?
Radiometric dating, radio dating, or radioisotope dating, is a technique used to date materials such as rocks and carbon that are selectively incorporated when minute amounts of radioactive contaminants are formed. This method compares the abundance of a naturally occurring radioisotope in a material with the abundance of its decay products formed at a known constant decay rate. First published by Bertram Boltwood in 1907, the use of radiometric dating is now the primary source of information regarding the absolute age of rocks and other geological features, including the age of fossilized life forms and the age of the Earth itself. is the source. Used to date his one wide range of natural and man-made materials.
To know about radiometric dating from the link
https://brainly.com/question/883124
#SPJ13
Select the correct answer.
If both parents have blue eyes, their offspring will automatically have blue eyes.
O A. True
О в. False
Which hormones help the body resist stress and make stored nutrients available to prepare the body for action?.
The hormones helping the body resist stress and make nutrients available to prepare the body for action are called corticosteroids.
What are hormones and what hormones help body resist stress and make stored nutrients available to prepare the body for action?Hormones are the body's chemical messengers that are released by the glands of endocrine system maintaining bodily functions.Cortisol is called the stress hormone which is released under stress condition of the body and mind.The hormones which helps body resisting stress is called corticosteroid hormones .Hormones have the base function which acts as a messenger that is it carries neural messages from one part of the body to another part of the body.Hence corticosteroids are the hormones resisting stress in the human body.To know more about hormones visit:
https://brainly.com/question/13020697
#SPJ4
At the synapse, information is transmitted from one neuron to another via what kind of messengers?.
Answer: Neurotransmitters
Explanation: Neurotransmitters carry their information from the pre-synaptic neuron to the post-synaptic receiving cell.
Which of the following do you expect if an individual is heterozygous for the sickle-cell trait? see concept
A. they will not develop sickle-cell disease
B. they will show some symptoms of the disease because the allele that causes sickle-cell disease is not really recessive
C. they will be more apt to acquire a serious case of malaria
D. they will have full-blown sickle-cell disease because the allele is dominant
E. none of the listed choices are correct
If an individual is heterozygous for the sickle cell trait, they will show not develop sickle cell disease. Option A.
Sickle Cell DiseaseSickle cell anemia is a disease of the blood that is homozygous and recessive. Consequently, an individual needs to have two copies of the recessive allele in order to be affected by the disease.
Now, if an individual is heterozygous for the sickle cell allele, it means such an individual has only one recessive allele which is not enough for the disease to be expressed.
This is why individuals that are heterozygous for the sickle cell trait don't show symptoms of the sickle cell disease. Instead, they enjoy a hybrid vigor that confers malaria resistance. Hence, they do not have malaria as often as those that are homozygous dominant.
Homozygous recessive traits are different from dominant traits. In the latter, only a copy of the allele is needed to be dominant, at least, in order for the trait to be expressed.
More on sickle cell anemia can be found here: https://brainly.com/question/876359
#SPJ1
what is the most likely explanation for the very low fecundity of species such as whales, humans, and elephants?
The most likely explanation for the very low fecundity of species such as whales, humans, and elephants is the high investment in parental care, which is a distinctive feature of K-selected species (Option C).
What are ecologically K selected species?Ecologically K selected species such as humans and elephants are those that invest many of their energies in parental care of small offspring amount, which is a reproductive strategy to have success in a very competitive environment.
Conversely, R species have many offspring and they are characterized to invest low amounts of time in parental care.
Therefore, with this data, we can see that ecological K-selected species are those that have a small number of offspring and their strategy is to maximize parental care.
Complete question:
What is the most likely explanation for the very low fecundity of species such as whales, humans, and elephants?
a. Low probability of offspring survival
b. Density-dependence
c. High investment in parental care
d. High mobility
e. All of the above
Learn more about ecological K-selected species here:
https://brainly.com/question/17135629
#SPJ1
What is the difference between the sugar/lipid/protein content of smooth and wrinkled peas? What
seems to be the cause of this difference within the pea plants' storage cells?
The color of the peas the plant will produce is controlled by a gene. Genes can exist in several forms.
Explain about the Gene?The fundamental genetic component transferred from parent to child. Genes are composed of DNA sequences and are organised sequentially at specified sites on chromosomes in the cell nucleus.
Hereditary information is passed down through generations via genes. They regulate the body's morphology and metabolism. Variations result from the shuffle of genes during sexual reproduction. Gene exchange results in the production of many links.
A little DNA segment called a gene. Your genes carry instructions that direct your cells to produce proteins in your body. Each gene carries instructions that control your traits, including your height, eye color, and hair color.
To learn more about Gene refer to:
https://brainly.com/question/1480756
#SPJ1
When you drink too much water and get water intoxication why would doctors give you a sodium IV solution? (explain scientifically)
Answer:
Let me attempt to answer your question
Drinking too much water would mean that more water would be absorbed and end up in the intracellular compartment. The chief ion extracellularly is Sodium,which is "water-loving"
The doctors give a sodium IV solution (hypertonic) so that there would be more sodium extracellularly to extract water from the intracellular compartment from where water can be more easily excreted.
Please select the word from the list that best fits the definition
a kind of foliated metamorphic rock
The word form the list that best fits the definition of "a kind of foliated metamorphic rock" is "NonFoliated" (Option D.
What is a non-foliated metamorphic rock?Nonfoliated metamorphic rocks form near igneous incursions when temperatures are high but pressures are modest and equal in all directions. Non-foliated metamorphic rocks have no layered or banded surface, such as hornfels, quartz, quartzite, and novaculite.
Because not all parent rocks feature platy or elongated minerals, the individual mineral grains do not align during metamorphism. Marble, quartzite, and hornfels are examples of non-foliated metamorphic rocks.
Foliated rocks feature minerals that are platy or elongate and are oriented in generally parallel planes or wavy bands or planes. Nonfoliated rocks may have colorful bands that reflect minute impurities in the rock, but there is no obvious alignment of the dominating minerals.
Learn more about metamorphic rocks:
https://brainly.com/question/19930528?
#SPJ1
Full Question:
Please select the word from the list that best fits the definition of layered metamorphic rocks:
FoliatedIgneous RocksMetamorphic RocksNonfoliatedSedimentary RocksPLEASE HELP!!!!! I WILL GIVE POINTS
The location of transcription is nucleus, it is the conversion of DNA to m-RNA and it occurs first in the sequence. The location of translation is ribosome, it is the conversion of m-RNA to protein and it occurs later in the sequence.
Ribosome is a nucleoprotein. It is a machinery designated for the synthesis of protein. The ribosome can be found freely lying on the cytoplasm or it can be attached to the wall of ER forming the rough ER. There are two subunits of ribosome: a smaller subunit and a larger subunit.
m-RNA stands for messenger RNA. It is the coding RNA that carries the information of DNA and encodes it for the synthesis of protein. m-RNA is a single-stranded molecule.
To know more about m-RNA, here
brainly.com/question/8997439
#SPJ9
Report writing on cellular busus of life
A single cell or many cooperating cells make up an organism. For this reason, scientists view cells as the fundamental building block of life.
For chemical processes, cells need a steady stream of molecules and energy, and they also need to get rid of waste. Cells, which are thought of as the fundamental building block of life, make up all living organisms. Complexity exists in even single-celled organisms! Atoms combine into molecules to create organelles and other structures in all cells.
Similar cells form tissues in multicellular organisms. Proteins, nucleic acids, carbohydrates, and lipids are just a few of the macromolecules, sometimes known as complex molecules, that make up cells. A subset of organic molecules known as macromolecules is crucial to life. The existence of unicellular creatures is independent.
To learn more about the cellular basis of life the link is given below:
https://brainly.com/question/253527?
#SPJ13
