Histones copy the DNA before division begins is the correct role of histones.
What is Histone?A chromosome's structural support is provided by a protein called a histone. Long DNA molecules found on each chromosome must fit into the cell nucleus.
To do it, the DNA wraps around complexes of histone proteins, giving the chromosome a more compact form. Additionally, histones are involved in the control of gene expression.
A nucleosome, which is made up of eight histone proteins, can exist. DNA can loop around a nucleosome much like a small spool. Thus, histones are crucial in maintaining the genome's order and neat wrapping inside a cell.
Therefore, Histones copy the DNA before division begins is the correct role of histones.
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Which nitrogen base sequence is the partner of T-C-A-G-C-A?
A-C-G-A-CIES
C-A-G-A-T-G
A-G-T-C-G-T
O T-C-A-G-C-A
Answer:
A-G-T-C-G-T
Explanation:
An easy way to remember is: car in the garage for c and g, apple in the tree for a and t.
What is the relationship between DNA, chromosomes, and any organism? Drag and drop the descriptive phrase to the correct column, thereby helping us to describe the relationships between these important components of inheritance.
Answer:
Look below
Explanation:
DNA= the 4th box= Instructions that provide all info necessary
Gene=the 2nd box=Each parent provides 1/2 to offspring
Chromosomes=the 1st box=codes for traits
Proteins=the 3rd and 5th box=Enzymes and macromolecule that builds and run cells
DNA- Each parent provides one-half to offspring AND Instructions that provide all information necessary for any organism to live, grow and reproduce.
Gene- A series of nitrogen bases that codes for a specific trait
Protein- Macromolecule that builds and runs cells AND Enzymes
Chromosomes- no answer.
Tell me what the answer?
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why is meiosis important? it produces sex cells, it produces diploid cells, it produces chromosome
Answer:Meiosis is important because it ensures that all organisms produced via sexual reproduction contain the correct number of chromosomes. Meiosis also produces genetic variation by way of the process of recombination.
Explanation:i hope this helps.
A student formulated a hypothesis that water soluble pollutants
Answer:
Can you restate the question, Iddont know what you are asking...
**Answer all 3 for brainliest**
Can you explain the atomic reactions that occur in nuclear fusion?
Can you explain what a photon is and how it is made?
How does this impact life on Earth?
Answer:
Nuclear fusion is a reaction in which two or more atomic nuclei are combined to form one or more different atomic nuclei and subatomic particles (neutrons or protons). The difference in mass between the reactants and products is manifested as either the release or the absorption of energy.
The photon is a type of elementary particle. It is the quantum of the electromagnetic field including electromagnetic radiation such as light and radio waves, and the force carrier for the electromagnetic force. Photons are massless, so they always move at the speed of light in vacuum,
photons are in light so yeah
When does cell division occur once
The continuum below shows the development of the human embryo into an adult and the types of stem cells involved.
List the four types of stem cells, give an example of each type, and explain how much each type can differentiate.
The different types of stem cells are:
Totipotent Stem CellsPluripotent Stem CellsMultipotent Stem CellsUnipotent Stem CellsWhat are Stem cells?Stem cells are defined as the raw material of the body through cells from which all other cells with specialized functions are generated. Stem cells live in the bone marrow, the spongy center of some bones, where they divide to make new blood cells.
Once blood cells have matured, they leave the bone marrow and enter the bloodstream, while a small number of immature stem cells also enter the bloodstream.
Types of stem cells:
1. Totipotent Stem Cells can differentiate into any type of cell in human body or placenta. Example: fertilized egg
2. Pluripotent Stem Cells can differentiate into any type of cell in the human body. Example: Blastocyst cells
3. Multipotent Stem Cells can develop into more than one type of cell but they are more limited than pluripotent cells. Example: Blood stem cell
4. Unipotent Stem Cells can only differentiate into a single lineage. Example: Skin stem cells
Thus, the different types of stem cells are:
Totipotent Stem CellsPluripotent Stem CellsMultipotent Stem CellsUnipotent Stem CellsLearn more about Stem cells, here:
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During ______ oxygen defuses into a cell trough the cell membranes.??
Answer:
diffusion.
Explanation:
i answered because i need points.
How does the human body maintains homeostasis? PLZ help I have a Test this week.
Answer:
Here are just three of the many ways that human organ systems help the body maintain homeostasis: Respiratory system: A high concentration of carbon dioxide in the blood triggers faster breathing. ... Excretory system: A low level of water in the blood triggers retention of water by the kidneys.
Which statements are true about variations in the genetic code?
Select all that apply.
A) All organisms display huge differences in their genetic code.
B) They may result in diseases.
C) They may provide selective advantages.
D) Slight differences in the genetic code may have significant results.
Answer:
C) They may provide selective advantages.
D) Slight differences in the genetic code may have significant results.
Explanation:
The genetic code is universal, and present in most living beings . Generally, in most living organisms, the same codons are assigned to the same amino acids.
DNA sequences make up genes that may have multiple variants, called alleles. DNA deoxyribonucleic acid, is transcribed into mRNA and then translated into amino acids that form proteins.
Natural selection mainly acts on phenotypes, which are dependent on proteins and the organisms's environment. Phenotypes conferring advantageous traits are favored by the selection process- these help groups of organisms evolve over time.
state the peripheral nervous system. Write the answer from own words.
Answer:
The peripheral nervous system (PNS) consists of all the nervous tissue that lies outside of the central nervous system (CNS).
Explanation:
Answer:
The PNS consists of the nerves and ganglia outside the brain and spinal cord. The main function of the PNS is to connect the CNS to the limbs and organs, essentially serving as a relay between the brain and spinal cord and the rest of the body.
Explanation:
Larger animals like humans and horses tend to have____
A: exoskeletons
B: endoskeletons
C: hydrostatic skeletons
WHICH ONE PLS HELP
Answer:
B: endoskeletons not A cause humans would be beetles then C isnt the answer because then we wouldnt be humans at all
Explanation:
B. Endoskeletons
Explanation:Animals that have endoskeletons are usually vertebrates, in other words they have a backbone. Humans, horses, giraffes etc,all have endoskeletons.
hope this help! ^^
What is the polymer for a nucleotide?
Answer:
DNA which is a nucleic acid
Explanation:
DNA is a polymer. The monomer units of DNA are nucleotides, and the polymer is known as a "polynucleotide." Each nucleotide consists of a 5-carbon sugar (deoxyribose), a nitrogen containing base attached to the sugar, and a phosphate group.
Answer:
DNA
nucleotide consist of a base, a phosphate and a pentose sugar, a strand of dna just compromises of a bunch of these together
17. (04.05 LC)
What is artificial selection? (3 points)
The practice of breeding organisms to make them more suited to their environment
The practice of breeding organisms to make them produce more offspring
The practice of breeding organisms with chemical fertilizers and pesticides
The practice of breeding organisms with the most desirable traits to the farmer
Answer:
The practice of breeding organisms with the most desirable traits to the farmer
Answer:
The practice of breeding organisms with the most desirable traits to the farmer
Explanation:
because duh
What role do lichens and
mosses play in succession?
A. They provide the seeds for large trees to
grow.
B. They provide food for carnivores to eat.
C. They help break down rocks and create
soil for new species.
D. They allow water to enter the ecosystem
Answer:
C is da answer
Explanation:
I hope this help you have a wonderful day!
Where are the protons located?
O nucleus
O electron cloud
Answer: The nucleus.
Explanation: In an atom, there are two main parts, the nucleus and the electron cloud/electron shells. The protons and neutrons are located in the nucleus, and the electrons are located in the electron shells/cloud/whatever.
what dose the term equine mean
Answer:
Equine is a horse or a member of the horse family ; relating to a horse
Answer:
Equine, equine is the whole breed it comes from I think the term of the sientific name Equus caballus just a modernized version
Explanation:
Explain the Science: In your own words, write an explanation that would address the two types of fermentation discussed in the video: alcoholic fermentation and lactic acid fermentation. Be creative in your writing and design it for someone who is unfamiliar with these fermentation types. In your writing, find a way to refer to the graphics labeled “Picture A,” “Picture B,” and “Picture C.”
Answer:
is this for school?
Explanation:
is reproduction anabolic or catabolic
Answer:
Metabolism is a biochemical process that allows an organism to live, grow, reproduce, heal, and adapt to its environment. Anabolism and catabolism are two metabolic processes, or phases. Anabolism refers to the process which builds molecules the body needs; it usually requires energy for completion
Explanation:
Answer:
i think anabolic
Explanation:
What is it called when molecules move across the cell membrane from an area of high concentration to an area of low concentration through a
carrier protein?
Answer:
WoW
Explanation:
What would most likely happen to a person who is not getting enough essential amino acids in his or her diet?
The body would synthesize the amino acids.
Muscle growth and repair would be limited.
Stored protein would break down.
The formation of proteins would increase.
Answer:
Muscle growth and repair would be limited
Explanation:
plz give me brainiest
Essential amino acids are the vital nutrients required by the body. The deficiency of the amino acids in the diet will limit the growth and repair of the muscles. Thus, option B is correct.
What are the essential amino acids?Essential amino acids are the amino acids that are not synthesized by the body and instead are taken from external sources in the diet. Some of the essential amino acids include histidine, lysine, valine, phenylalanine, etc.
The essential amino acids improve the musculoskeletal and the immune system along with stimulating the growth and production of hormones.
If the diet lacks the essential amino acids then the repair mechanism and the growth of the body will be limited as they are not synthesized by the body.
Therefore, the absence of essential amino acids limits muscular growth and repair.
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what are nodes and inter nodes
Answer:
Nodes are the regions on the stem from which leaves develop, while internodes are the regions between two nodes.
#indians
Which type of weathering occurs most frequently at high elevations, and can bring mountains down to sea level over time?
Analyze the diagram below:
According to the model represented in the diagram, which of the following would cause the cell to not express the lacZ, lacY, and lacA sequences?
Binding the RNA polymerase to the gene
Preventing the repressor from binding to the lac operon
Removing the inducer
Transcribing the lacl sequence
Answer:
Transcribing the lacl sequence
Explanation:
lacZ, lacY, and lacA sequences are the structural genes, which needs to be expressed in order to produce their proteinous enzymes required for the breaking down of lactose sugar. The transcription of these three genes must occur with the aid of RNA polymerase binding to them.
However, a gene sequence called lacI encodes information for an repressor, which when expressed can inhibit the expression of the genes lacZ, lacY, and lacA. Hence, the TRANSCRIPTION OF THE LACL SEQUENCE cause the cell to not express the lacZ, lacY, and lacA sequences.
Answer: removing the inducer
Explanation: all sequences need an inducer present in order for them to be expressed
What part of the cell serves as the intracellular highway?
A: mitochondria
B: endoplasmic reticulum
C: chloroplast
Answer:
will you please help me with my question pleasee
Explanation:
i really need help
Answer:
B. Endoplasmic Reticulum
Students did an experiment comparing the activity of four different enzymes, A, B, C, and D. The results are represented in the graph below. A valid conclusion based on the information in the graph is that...
A) the pH of some enzymes changes as the temperature changes.
B) enzymes change color in proportion to the rate of activity.
C) a difference in the pH of an environment changes enzyme activity.
D) enzyme activity causes acids to change into bases over time.
Answer:
C
Explanation:
a difference in the pH of an environment changes enzymes activity
A valid conclusion from the graph is; a difference in the pH of an environment changes enzyme activity.
An enzyme is a biological catalyst that promotes biochemical reactions in the body. Enzymes are specific in their actions. Enzymes act on particular substrates. There is an optimum pH of enzyme activity. The pH of an environment affects enzyme activity.
According to the graph shown, the activity of the enzyme is plotted against the pH of the environment. we can see from the graph that a difference in the pH of an environment changes enzyme activity.
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Which statements describe oceanic crust? Select the two correct answers.
A. It’s age ranges from very young to more than 4 billion years old.
B. It is formed at zones of volcanic activity on the ocean floor.
C. It is made of all types of rocks.
D. It is between 25 and 70 km thick.
E. It contains silicate minerals high in iron and magnesium.
Answer:
The correct answers are options B. "It is formed at zones of volcanic activity on the ocean floor. ", C. "It is made of all types of rocks" and E. "It contains silicate minerals high in iron and magnesium."
Explanation:
In Geology, the continental crust is defined as the layer of the Earth that allowed the formation of the continents. This layer is made of all types of rocks, including igneous, metamorphic, and sedimentary rocks. This layer is also considered silica-rich, or felsic, because of its high content of silicate minerals. Regarding the thickness of continental crust, it is between 25 to 70 km thick. This is considerable thick considering that oceanic crust which barely reaches 10 km thick.
If the temperature of the ice-salt mixture decreases, why is the ice melting
Answer:
Salt lowers the freezing point of water via freezing point depression. ... When salted ice melts, the water can't refreeze as readily because the saline isn't pure water anymore and because the freezing point is colder. As more ice melts, more heat is absorbed, bringing the temperature down even lower.
Explanation:
Hope this helped, Have a Wonderful Day!!
1. What force, created when two surfaces rub together,
makes it difficult to drag a large object across the
ground?
A gravity
B friction
C lift
D drag
2. Which of the following do many scientists think
caused the extinction of the dinosaurs?
A an asteroid
B freezing temperatures
C wildfires
D all of the above
3. All lobster shells contain __________, compounds that
give lobsters their color.
A melanin
B DNA
C pigments
D dye
4. Nitrogen dioxide, a major air pollutant, is a gas
produced mainly by __________.
A cars
B cow farts
C factories
D wildfire smoke
5. The most common cause of concussions among high
school football players is __________.
A contact with another player
B hitting the ground
C crashing into equipment
D practicing too hard
6. __________ of the elements on the periodic table are
found in nature.
A 100%
B Around 75%
C About 50%
D Less than 50%
7. Emeralds form when elements in __________ are
heated and pressed together.
A rocks
B Earth’s crust
C Earth’s core
D lava
8. Lobsters usually have brown shells, but some can be
different colors due to __________.
A an adaptation
B a mutation
C an environmental factor
D a change in pH
9. During which time of year is air pollution the highest
in London?
A Summer
B Spring
C Winter
D Fall
10. Dinosaurs became extinct about __________ years
ago.
A 65 million
B 6.5 billion
C 65,000
D 6,500
Answer:b friction
Explanation:
