Answer:
The nuclear membrane encloses the nucleus in eukaryotes. The membrane is penetrated by nuclear pore complexes.
Explanation:
The nuclear membrane (nuclear envelope, nucleolemma) isolates the interior of the nucleus from the cytoplasm. The membrane has two layers enclosing a distinct inner lumen (em). The nuclear membrane is penetrated by large nuclear pore complexes, which selectively transport molecules into or out of the nucleus. The luminal space within the double-layered nuclear membrane is continuous at points with the endoplasmic reticulum, a membrane-enclosed organelle (continuous with the outer nuclear membrane) to which are attached ribosomes (em2) executing translation of genetic coding into polypeptides and proteins.
Type V intermediate filaments are lamin proteins that have a nuclear signal sequence and form a filamentous support called the nuclear lamina just beneath the inner nuclear membrane. The lamina a net-like meshwork array that lines the inner nuclear membrane and governs the shape of the nucleus. Of the three nuclear lamin proteins, two are alternatively spliced products encoded by a single gene, while the third lamin is encoded by a separate gene. Nuclear lamins form a fibrous network that supports the nuclear membrane.
Lamins have a very long rod domain and carry a nuclear transport signal, they are located in the nucleus just beneath the nuclear envelope so they are vital to the re-assembly of the nuclear envelope after cell division. Lamins are phosphorylated at the end of prophase and this causes them to disassemble simultaneous with dissolution of the nuclear envelope. After cell division, they are dephosphorylated just before the nuclei of the daughter cells form and lamin filaments reassemble around each set of chromosomes. They are continuous except for a break at the sites of nuclear pore complexes. Lamins were probably the first intermediate filaments to evolve. Controlled by cdc2 kinase, lamin filaments disassemble prior to or early in mitosis then reassemble after cell division. Phosphorylation of serine residues in the N-terminal domain of lamin A by cdc2 kinase induces the disassembly of intact filaments and prevents reassembly.
Nuclear lamins help attach the chromosomes to the nuclear membrane and provide anchorage points for the nuclear pores. It is believed that nuclear lamins are the evolutionary ancestor of cytoplasmic intermediate filaments, which evolved through duplication and translocation of the gene product to the cytoplasm
What is one way that tourists damage coral reefs?
They practice dynamite fishing.
They use cyanide in their fishing practices.
They touch the coral or take pieces of it.
They add fertilizer to the water.
The epidermis of the skin serves as a barrier to mechanical stresses and protects us from microorganisms. What tissue do you think forms the epidermis
The epidermis of the skin consists of stratified squamous epithelium, which provides a waterproof barrier to mechanical stresses.
What do you mean by Epidermis?The Epidermis may be defined as the outer layer of the two main layers of the skin. It is the primary defense mechanism of every living organism.
The skin consists of the keratinocytes from the stratified squamous epithelium, of flattened cells.
Therefore, the epidermis of the skin consists of stratified squamous epithelium, which provides a waterproof barrier to mechanical stresses.
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which statement best describes a relationship between mitochondria and chloroplasts
Protein X activates gene expression only in cells exposed to a specific signaling molecule. In a study,
researchers determined the intracellular location of Protein X in cultured cells both before and after exposing
the cells to the signaling molecule. The results of the study are shown in the diagram.
Based on the results, which of the following best describes what Protein X is?
A. Protein X is an RNA splicing enzyme.
B. Protein X is a cell membrane receptor protein.
C. Protein X is a transcription factor.
D Protein X is a hormone.
Before
Treatment
After
Treatment
Protein X
-z
Based on the results, which of the following best describes what Protein X is a transcription factor.
What are transcription factors?Transcription factors are proteins that contain at least two functional domains: one binding with DNA and the other binding with RNA polymerase. These proteins control when, where and how the genes will be transcribed, being the basis for the control of gene expression.
In this case the protein X is a transcription factor which means proteins that help turn specific genes "on" or "off" by connecting to nearby DNA. Transcription factors that are activators drive the transcription of a gene.
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b. Layers of rock are moved by forces beneath Earth's surface.
c. Most geological processes operate extremely slowly.
d. The processes that changed Earth in the past are different from the processes that
operate in the present.
3. Circle the letter of each sentence that is true about Lyell's work.
a. His book, Principles of Geology, was published after Darwin returped from his voyage.
b. His work explained how awesome geological features could be built up or torn down
over long periods of time.
Answer:hey reasoned that all rocks that were laid down in layers in large part were laid down under or by water or action by a fluid. They later discovered that both water and wind laid down the materials that later became lithified to become rocks.When these rocks were deposited as sediments, this area was most likely (1) under the ocean (2) a desert between high mountains (3) repeatedly covered by lava flows (4) glaciated several times Both organisms that formed the fossils found in rock layers 3 and 4 (1) lived during the same period of geologic time (2) lived in polar regions
List the top four basic needs that you think must be met during a prolonged emergency
when normal activities are severely affected?
The four basic neccessities in emergency period are;
FoodWaterShealterClothingWhat is an emergency?The term emergency refers to any period in which there is scarcity of basic resources such as during war.
In such times there are four basic neccessities that one must think about and they are;
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The fact that all organisms have DNA as their genetic material is evidence that
-Natural Selection Occurred
-All organisms descended from a common ancestor
-Selective breeding takes place everyday
-Genetic resistance rarely occurs
How many times larger is the radius of the Sun than that of the Earth?
A. 7
B. 65
C. 150
D. 109
109
Explanation:
The suns radius is 432,690 mi the earth's radius is 3,958.8 mi
Answer:
Option D: 109
easy biology question below first correct answer gets brainliest
Answer:
the answer is sequestered
Geologic carbon sequestration is the process of storing carbon dioxide (CO2) in underground geologic formations. The CO2 is usually pressurized until it becomes a liquid, and then it is injected into porous rock formations in geologic basins
What are the organized pieces of DNA called
Answer:
double helix
Explanation:
Together, a base, sugar, and phosphate are called a nucleotide. Nucleotides are arranged in two long strands that form a spiral called a double helix
Which statement best describes cancer cells?
• They grow as a single layer of cells.
• They cease to reproduce after 20-50 mitotic divisions.
• They reproduce only when needed to replace missing cells.
• They are not regulated by contact inhibition.
Answer:
They are not regulated by contact inhibition.
Explanation:
The lack of contact inhibition control in cancer cells is what allows them to continue to reproduce. In non-cancerous cells, contact inhibition triggers cells to stop dividing and to grow when they come in contact with other cells. This control is lost when cells undergo malignant transformation.
Is an onion structure a cell tissue organ system or organisms
Answer:
it's a cell tissue
Explanation:
dude its like so obvious
Obviously, its a Tissue.
Explain why there are more cells observed in mitosis in the root tip than in the woody stem?.
The root tip offers more cells experencing mitosis because the root tip needs to grow more than the woody stem.
What is the importance of mitosis in the roots of plants?The procedure of mitosis, cell division takes place, hence providing the expansion of cells for development. This indicates that mitosis is liable for the development of plant leaves, roots, and stem among other factors.
Thus, the root tip cells split more often. It's like how parts of the human body like muscles cells never split, but skin cells are more oftenly dividing.
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What species are made at the anode and cathode, respectively, during the electrolysis of molten kbr
Br₂(g) and K(l) species are made at the anode and cathode, respectively.
What products result from the electrolysis of molten KBr?Molten lead bromide, PbBr 2(l), is an electrolyte.
During electrolysis: Pb 2+ ions gain electrons at the cathode and become Pb atoms.
Br - ions lose electrons at the anode and become Br atoms, which pair up to form Br 2 molecules.
Thus, Br₂(g) and K(l) species are made at the anode and cathode, respectively.
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As opposed to freshwater animals, salt water animals have a risk of this reaction due to the salt concentration in the water.
A) Overflow of oxygen
B) Shrinking
C) Losing carbon dioxide
D) Swelling
As opposed to freshwater animals, salt water animals have a risk of shrinking due to the salt concentration in the water. So, the correct option is (B).
What is Osmosis?Osmosis is defined as the diffusion of water molecules across a selectively permeable membrane from an area of high concentration to an area of low concentration.
When cells of saltwater animals encounter a hypertonic solution, that is, a high concentration of solutes, they dehydrate due to lack of water, so they shrink, and when those cells lose solutes with respect to their insides When exposed to low concentrations, they absorb water, so they swell.
So if a saltwater animal is exposed to a high concentration of solute, its cells will shrink or experience plasmolysis,
Thus, as opposed to freshwater animals, salt water animals have a risk of shrinking due to the salt concentration in the water. So, the correct option is (B).
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______occurs so plants can make _________to use for energy
Answer:
PhotosynthesisGlucosethe question is in the picture
i'll brainliest immediately who can answer it properly
you may take your time. thank you.
Answer:
The importance of plant genetic diversity (PGD) is now being recognized as a specific area since exploding population with urbanization and decreasing cultivable lands are the critical factors contributing to food insecurity in developing world. Agricultural scientists realized that PGD can be captured and stored in the form of plant genetic resources (PGR) such as gene bank, DNA library, and so forth, in the biorepository which preserve genetic material for long period. However, conserved PGR must be utilized for crop improvement in order to meet future global challenges in relation to food and nutritional security. This paper comprehensively reviews four important areas; (i) the significance of plant genetic diversity (PGD) and PGR especially on agriculturally important crops (mostly field crops); (ii) risk associated with narrowing the genetic base of current commercial cultivars and climate change; (iii) analysis of existing PGD analytical methods in pregenomic and genomic era; and (iv) modern tools available for PGD analysis in postgenomic era. This discussion benefits the plant scientist community in order to use the new methods and technology for better and rapid assessment, for utilization of germplasm from gene banks to their applied breeding programs. With the advent of new biotechnological techniques, this process of genetic manipulation is now being accelerated and carried out with more precision (neglecting environmental effects) and fast-track manner than the classical breeding techniques. It is also to note that gene banks look into several issues in order to improve levels of germplasm distribution and its utilization, duplication of plant identity, and access to database, for prebreeding activities. Since plant breeding research and cultivar development are integral components of improving food production, therefore, availability of and access to diverse genetic sources will ensure that the global food production network becomes more sustainable. The pros and cons of the basic and advanced statistical tools available for measuring genetic diversity are briefly discussed and their source links (mostly) were provided to get easy access; thus, it improves the understanding of tools and its practical applicability to the researchers.
What are Micro-Organisms
Answer:
A microorganism, or microbe,[a] is an organism of microscopic size, which may exist in its single-celled form or as a colony of cells.
Answer:
Those organism which cannot be seen under eyes and require microscope to be seen are called micro organism .
In 2008, Americans generated 250 million tons of non-hazardous municipal solid waste. Of that waste,
54.2 percent was discarded
33.2 percent was recovered
12.6 percent was burned with energy recovery at
590 kWh of electricity per ton
I
Fill in the table to answer the following:
How many tons were discarded, and what is the method by which solid waste is discarded?
How many tons were recovered, and what are the methods of recovery?
How many tons were burned, what was the method for producing electricity, and how much electricity
was generated?
Discuss the positive and negative environmental impacts of eliminating one of the three endpoints.
The endpoint of municipal solid
Tons (millions)
Method
waste
discarded
recovered
burned with energy recovered
Answer:
Explanation:
How many tons were discarded, and what is the method by which solid waste is discarded? 54.2% of 250 million can be calculated by multiplying 250 million by 0.542, which equals 135.5 million tons of waste discarded.
How many tons were recovered, and what are the methods of recovery? 83 million tons recovered (250 million * 0.332)
How many tons were burned, what was the method for producing electricity, 31.5 million tons burned (250 million * 0.126)
and how much electricity was generated? 1.8585 X 10^10 kWh or 18.86 billion kWh of electricity generated (31.5 million tons burned * 590 kWh per ton)
Which species can live in both salt water and fresh water?
I think it would be a turtle or a fish.
Explanation:
.
Hello, please match the following correctly. Ty
Answer:
I'm gotta take a stab at it:
1. Health = E
2. Weight Management = G
3. Bacteria = F
4. Vaccination = H
5. Dengue = I
6. Allergens = B
7. Body Mass Index = J
8. Down Syndrome = A
9. Proper Sewage Disposal = C
10. Infectious = D
Hope it helps!
If water is moving from inside of a red blood cell to outside of the cell into the blood plasma, the solution is
a. hypotonic
b. hypertonic
c. isotonic
d. monotonic
Answer:
hypertonic
Explanation:
If a cell is placed in a hypertonic solution, there will be a net flow of water out of the cell, and the cell will lose volume. A solution will be hypertonic to a cell if its solute concentration is higher than that inside the cell, and the solutes cannot cross the membrane.
What does translation and transcription have in common?
Can you guys give me multiple answers and say which one is correct !! PLEASE HELP ME
Answer:
They are both equally important to the protein making process.
Both processes occur in the cytoplasm in prokaryotes.
Both use a DNA template.
The fourth one I can't think of, you'll have to do that one yourself, sorry!
Explanation:
Transcription is the synthesis of RNA from a DNA template where the code in the DNA is converted into a complementary RNA code. Translation is the synthesis of a protein from an mRNA template where the code in the mRNA is converted into an amino acid sequence in a protein.
Hope this helps, I did as much as I could!
What type of allele will be expressed if both dominant and recessive alleles are present for a given trait?.
Answer:
The dominant allele will be expressed.
Explanation:
When both alleles are present in the genotype, the dominant allele "masks" the recessive allele so that only the dominant trait is expressed.
An inheritable physical feature is a
Answer:
Physical trait.
Explanation:
Characteristics that are obserevable that a child inherits from there parents.
Ex: Freckles
whats 10+10=?
whats 9+9=?
whats 8+8=?
whats 7+7=?
whats 6+6=?
whats 5+5=?
whats 4+4=?
whats 3+3=?
whats 2+2=?
whats 1+1=?
Answer:20,18,16,14,12,10,8,6,4,2
Explanation:
Answer:
1. 20
2.18
3.16
4. 14
5. 12
6. 10
7. 8
6. 6
7. 4
8. 2
Explanation:
May calculator ka ba
what depolarizes producing the P wave, which generates a wave of contraction
Answer: The P wave indicates atrial depolarization. The P wave occurs when the sinus node, also known as the sinoatrial node, creates an action potential that depolarizes the atria. The P wave should be upright in lead II if the action potential is originating from the SA node.
Explanation:
Interpret the range of annual precipitation and the temperature range for a tundra biome.
What term is used to describe how well an organism functions in its
environment?
о
A. Variation
о O B. Selection
O C. Fitness
O D. Evolution
Answer:
C. Fitness
Explanation:
Fitness is the term used to describe how well an organism functions in its environment. The phrase "survival of the fittest" refers to the fitness that an organism has with regard to its environment. The greatrer an organism's fitness, the greater its chances of survival, and the greater its chances of reproducing.
What does a plant or animal need in order to survive in a certain ecosystem?