1. Which of the following best identifies base 1?
-
Cytosine
Purine
Pyrimidine
Nucleotide

Answer: B.)

Explanation:

The statement is true regarding limestone and dolostone is as follows:

Thus, the correct option is B.

Dolostone may be defined as a sedimentary carbonate rock that possesses a high percentage of the mineral dolomite, CaMg(CO3)2.

Limestone is composed of the mineral calcite (CaCO3), while dolostone is composed of the mineral dolomite. They are both very similar to one another.

Limestone reacts with acids in solid form while dolostone visibly reacts with acids, if powdered.

Therefore, the correct option for this question is B.

To learn more about Limestone and Dolostone, refer to the link:

https://brainly.com/question/7346291

#SPJ2

Answer:

A. phloem

Explanation:

Answer:

lungs

Explanation:

idk if I'm correct I'm just guessing

Answer:

it’s Important reasons for studying biology are to understand how cells and organisms work. It involves the study of life and it is very important as it tells us about the natural world. Biology tells us about our body, helping us to develop cures and treatments for many diseases.

Explanation:

the other ppl said it

Answer:

Receptor tyrosine kinases undergo autophosphorylation.

Explanation:

The receptor tyrosine kinases (RTKs) are proteins that undergo dimerization and autophosphorylation after binding with their corresponding ligands, thereby triggering downstream molecular signaling cascades. The RTKs bind with high specificity to ligands including growth factors, hormones and cytokines. In human cells, there are 58 types of RTKs proteins that function to regulate developmental pathways, and their dysfunctions have been associated with cancer progression.

Explanation:

the function of the pancreas that it secretes enzymes that work in tandem with bile from the liver and gallbladder to help breakdown substances for proper digestion and absorption.

Answer:

Releases insulin.

Explanation:

Answer: 6) sodium channel activation occurs.

4)a graded depolarization brings an area of excitable membrane to the threshold.

7) sodium ions enter the cell and further depolarization occurs.

1)sodium channels are inactivated.

2) voltage-regulated potassium channels open and potassium moves out of the cell, initiating repolarization.

3) sodium channels regain their normal properties.

5) a temporary hyperpolarization occurs

Explanation:

action potential occurs when the differences in the concentrations of ions on opposite sides of a cellular membrane lead to a voltage of a specific cell location rapidly rises and falls.

The steps involved in this generation are;

First of all the sodium-gated channel activation occurs due to inflow of Na, this is called depolarization. A graded depolarization brings an area of excitable membrane to the threshold. More sodium ions enter the cell and further depolarization occurs. After which the sodium channels are inactivated due to the opening of voltage-regulated potassium channels and potassium moves out of the cell, returning it to it initial resting phase initiating repolarization. sodium channels regain their normal properties. a temporary hyperpolarization occurs which is a transient negative shift after an action potential occurs.

Answer:

Various biotic & abiotic elements create ecosystem.

Explanation:

Ecosystem is a geographic system where plants, animals, other organisms, weather & other climatic factors create an ambience of prevailing life.

Ecosystem has following components :

Answer:

Hybrid incompatibility has a genetic basis both in plants and animals

Explanation:

In plants, hybrid incompatibility may be associated with different factors including, for example, mismatch recognition in chromosomal pairing, changes in the ploidy level, homozygous lethal alleles, epigenetic-associated factors, postzygotic hybrid incompatibility, etc.

Hybrid incompatibility is recognized to promote reproductive isolating barriers between species, thereby understanding into the genetic basis of this phenomenon may result useful to understand the evolutionary forces that are associated with speciation.

You can reverse the hybrid incompatibility by changing the ploidy level, since it ensures a correct chromosome pairing during the cell division. You can use colchicine, it is an antimitotic agent that is widely used to duplicate the ploidy level.

Answer: B: Reproduction

Explanation: Generally, flowers are the reproductive organs of plant. All its structures are geared towards the reproduction process

Answer:

A) Allelic position in the chromosomes:

IA  ----------M------------:-----------P----

IB  ----------m------------:-----------p----

IIA -----------------R--------------------:---------------------

IIB -----------------r---------------------:---------------------

B) Types of gametes (assuming there is no crossing over):

MPR; MPr; mpR; mpr.

Explanation:

In submetacentric chromosomes, the centromere is located near to the middle of the chromosomes.

Since these two pairs of homologous chromosomes do not undergo crossover, the resulting gametes after meiosis may have four (4) allele combinations.

Answer:

I think it's concrete operations

Answer:

1

Explanation:

Answer:

i believe your answer is a

Explanation:

Answer:

The instructions for making proteins are coded in the (cytoplasm / DNA / endoplasmic reticulum / nucleus) of a cell. In a eukaryotic cell, these instructions are located in the (cytoplasm / DNA / endoplasmic reticulum / nucleus).

Explanation:

The genetic code is contained in DNA, or deoxyribonucleic acid. This is usually the same among most organisms, save some RNA viruses. But in eukaryotes, the DNA is in the nucleus, whereas in prokaryotes the DNA is in the "nucleoid region", or a twisted up section near the middle of the cell.

The instructions for making proteins are coded in the DNA of a cell. In a eukaryotic cell, these instructions are located in the nucleus.

Deoxyribonucleic acid is a polymer made up of two polynucleotide chains that coil around each other to form a double helix that contains genetic instructions for the development, functioning, growth.

it is also involved in reproduction of all known organisms and viruses. Nucleic acids include DNA and ribonucleic acid.

The information molecule is DNA. It stores instructions for the production of larger molecules known as proteins.

These instructions are stored in the nucleus of each of your cells and are distributed across 46 long structures known as chromosomes.

These chromosomes are composed of thousands of shorter DNA segments known as genes.

DNA is a linear molecule made up of four different types of smaller chemical molecules known as nitrogenous bases.

Thus, DNA is involved in coding protein and is usually located in nucleus.

For more details regarding DNA, visit:

https://brainly.com/question/22499464

#SPJ2

Answer:

Explanation:

Vaccines are penetrations into the body system that helps improve the immune system against specific diseases.

The vaccines act by imitating the disease causing organism i.e they resemble the disease causing organism this is because they have been made form strains of the weak or dead disease organism.

The body system is made to identify this toxins or disease organism as something strange that needs to be remove anytime it reoccurs in the cell when the vaccines are taken. Although the body sees vaccine as something harmful they do not actually cause the disease but are pointers to the disease causing organism.

Answer:

(2) UAU-CGA-GGA-GUU-GCG-CUC

Explanation:

The mRNA is produced by the process of transcription which transcribes the DNA to mRNA which can be recognised and read by the ribosomes.

The ribosomal subunits get attached to the mRNA which scans or read the mRNA in the form of codons or triplets of nucleotides. These codons code for particular amino acid and about 64 codons code for 21 amino acids.

In the given question, the sequence of the amino acids in the peptide has been provided based on which the sequence of codons can be easily decoded.

For the provided peptide, the sequence of amino acid will be Option-2 which is UAU-CGA-GGA-GUU-GCG-CUC as this sequence of codons has the codons arranged according to the sequence of the amino acid.

Thus, Option-2 is the correct answer.

UAU-CGA-GGA-GUU-GCG-CUC is the sequence code that encodes the mRNA TYR-ARG-GLY-VAL-ALA-LEU

mRNA plays a major role in protein synthesis which originate from the joining together of individual amino acids in the ribosomes.

These amino acids are encoded by three letters that form a codon. There are 64 different codons in the genetic code encoding for the entire 20 amino acids.

The amino acid chain is thus decoded as:

To learn more about the genetic code see the link: https://brainly.com/question/21272924?referrer=searchResults

Answer:

The options are not given. Here are the options;

produces a coma

has an irregular shape

has a tail of ice and dust

produces a streak of light.

The answer is has an irregular shape.

Explanation:

Asteroid are small objects that are too small to be called planets that revolve round the sun. They are smaller in size. The mass of the asteroids is less than the size of the Earth's moon.

Asteroids are leftovers from the formation of our solar system about 4.6 billion years ago. Earlier, the formation of Jupiter prevented any planetary bodies from forming in the gap between Mars and Jupiter, which make the small objects that were present to collide with each other and fragment into the asteroids.

Asteriods produce irregular shape.

Answer:

the answer is has an irregular shape or b

Explanation:

Answer:

The Ash Trees with Ash Borer are being cut down as a way to maintain the stability of the other Ash Trees.

Explanation:

As stated in the information given, "Ash trees are being removed when they show signs of the Ash Borer, a parasite that affects only Ash Trees and kills them off."

To preserve the other trees, these trees with the parasite must be cut down as a way to stop other trees from gaining this parasite. Its a preservation method for Ash Trees.

Hope this helps!

Answer:

D

Explanation:

answer on edge

Answer:

False

Explanation:

You relax the diaphragm muscle by exhaling. When the diaphragm muscle is relaxed, the lungs contract. When the diaphragm muscle expands, the lungs also expand. Therefore, relaxation of the diaphragm muscle does NOT play a major role in expanding the lungs.

Answer:

rate of division

Explanation:

In normal cells, the cell cycle is controlled by a complex series of signaling pathways by which a cell grows, replicates its DNA and divides. In cancer, as a result of genetic mutations, this regulatory process malfunctions, resulting in uncontrolled cell proliferation.

HOPE IT HELPS :)

PLEASE MARK IT TH BRAINLIEST!

Cancer is a disease in which some cells lose their ability to control rate of division. The correct option is C.

Cancer is the body's unchecked proliferation of aberrant cells. When the body's natural control system malfunctions, cancer might emerge.

Instead of dying, old cells proliferate uncontrollably to produce new, aberrant cells. These excess cells could aggregate into a tissue mass known as a tumour.

Genes, the fundamental building blocks of inheritance, can change in ways that result in cancer.

Chromosomes are long, tightly packed DNA strands where genes are organised. Since genes that determine how our cells behave, particularly how they grow and divide, are altered, cancer is a genetic disease.

Thus, the correct option is C.

For more details regarding cancer, visit:

https://brainly.com/question/8590464

#SPJ5

Answer:

There is no diagram but the question can be answered using the description. The options to this question are:

Which is the genotype of the sweet pea?

A.heterozygous dominant

B.heterozygous recessive

C.homozygous dominant

D.homozygous recessive

The answer is C (homozygous dominant)

Explanation:

According to the question, a flower colour gene in a pea plant possesses two different alleles, P and p. Lettercase is used to illustrate that allele P (upper case) is dominant over allele p (lowercase) i.e P will be expressed over p in the flower colour gene.

According to the question, the pea plant exhibits a purple flower colour and is labelled as PP. This genotype is said to be homozygous because the same alleles (P) make up the plant's genotype. Since the allele P coding for purple coloration is dominant, the purple sweet pea is said to be HOMOZYGOUS dominant i.e. possess the same dominant alleles for that gene.

Answer:

[C] H D

(Brainly Marked It As An Inappropriate Word)

Explanation:

See Below

Answer:

gulf stream

Explanation:

it transports warm water from the equator past the east coast of north america and across the atlantic to europe

The map of ocean currents shows that the surface ocean currents create loops called gyres. The Gulf stream current is a warm ocean current that flows completely around Earth.

Gulf stream is a strong ocean current bringing warm water into Atlantic ocean to Gulf of Mexico.

The Gulf Stream is in the western North Atlantic Ocean. It moves north with the coast of Florida and then moves eastward off of North Carolina, flowing northeast across the Atlantic.

Thus, the correct option is d.

To learn more about gulf stream, visit:

https://brainly.com/question/11534935

Answer:

The main difference between these two classes is that: Pteridophytes are vascular plants but they do not produce flowers and seeds which mean their source of reproduction is unknown or hidden. Examples are ferns, horsetails and lycophytes. On the contrary, Spermatophytes as the name indicates, are seed bearing plants.

Explanation:

Answer:

THE DIFFERENCE is that spermatophyte is (botany) any plant that bears seeds rather than spores while pteridophyte is any plant of the division pteridophyta, of simple vascular plants that reproduce via spores rather than seeds and that alternate generations of diploid (sporophyte) and haploid (gametophyte or prothallus) forms

Explanation:

Answer:

C. Viruses do not consist of cells; they also lack cell membranes, cytoplasm, ribosomes, and other cell organelles.

Explanation:

Viruses are only composed of a couple things: strands of nucleic acid that can be DNA or RNA, a protein coat called a capsid, and potentially a glycolipid coat to protect the outside.

There are no organelles, nor are there cells. Keep in mind that a virus is nonliving, so D is utterly wrong.

Answer:

Oslo is the capital of Norway.

The capital of Canada is Ottawa.

Jakarta is the capital of Indonesia.

Canberra is the capital of Australia.

The capital of Kenya is  Nairobi.

The capital of Argentina is Buenos Aires.

Explanation:

Oslo is the capital of Norway.

Being the biggest city of Norway, Oslo was made the capital of the country. It is also the most populous city in the country and is the main governmental and economical center of the nation.

The capital of Canada is Ottawa.

Chosen because of its location, the city of Ottawa was chosen by Queen Victoria to be the capital of Canada. It is the central point of access between the cities of Montreal and Toronto, and despite it's smaller status as a city, it was chosen as the capital due to its prominence in the location.

Jakarta is the capital of Indonesia.

Jakarta, located on the island of Java, is the capital of Indonesia. Formerly known as Batavia, this city was the official Dutch settlement during the colonial times. Now, it is presently the capital of the nation.

Canberra is the capital of Australia.

Despite Australia having numerous capital cities according to the boundary or seat of government it has, the city of Canberra is more regarded as the capital of the island nation. It is the largest inland city of the country and has numerous important government offices in it.

The capital of Kenya is Nairobi.

The biggest city in the Kenyan nation, the city of Nairobi is the capital of Kenya. The Nairobi River flows through the city, from which the Maasai name of the city Enkare Nairobi is attributed.

The capital of Argentina is Buenos Aires.

Buenos Aires is the capital of Argentina. It is also the largest city in the Latin nation and is home to numerous multi-nationals from various ethnic groups.

Answer:

The reaction that causes a firework to explode requires less energy to start, and occurs more rapidly than the reaction that causes a candle to burn.

Explanation:

The speed of a chemical reaction and the amount of energy required for this reaction is directly linked to the concentration of reagents present in the system. With that, we can say that the higher the concentration of reagents, the faster the chemical reaction will be due to the greater probability of collision between its molecules.

Although the reaction that causes a candle to burn has more reactants than the reaction that causes the fireworks to explode, the latter requires less energy to start. This makes the molecules of the reagents stir faster and collide more efficiently, making the reaction happen much faster.

In summary, the reaction that causes a firework to explode requires less energy to start and occurs more quickly than the reaction that causes a candle to burn.

The reaction that causes a firework to explode requires more energy to start, and occurs more rapidly than the reaction that causes a candle to burn.

The rate of reaction refers to the ease with which reactants are converted to products. The higher the rate of reaction, the faster reactants are converted into products.

The activation energy is the energy required for reactants to be converted into products. It is an energy barrier that separates reactants and products.

From the description of the graphs, we are told that the reaction that causes the explosion of firework starts at high concentration, initially increases slightly then decreases rapidly. The fact that it initially increased slightly before decreasing rapidly implies that the high energy required for the reaction to start is high.

On the other hand, the reaction for the candle to burn starts at high concentration, increases more than the firework, and then decreases rapidly because the reaction requires a lesser energy to commence than the reaction for the burning of candle.

Learn more: https://brainly.com/question/8592296

Answer:

The correct answer is

18

Groups of the periodic table: The s-, p-, and d-block elements of the periodic table are arranged into 18 numbered columns, or groups.

Hope this helps!

- Quinn <3

Answer:

a. 78452

Explanation:

Myocardial perfusion imaging is use to assess myocardial viability or to determine the extent of myocardial ischemia. SPECT systems is widely using now a days as imaging can be done in less than 10 minutes.

The appropriate CPT code for the procedure that Clarissa is undergoing is  78452. 78452 include multiple studies at stress or rest condition by providing injection of radionuclide in  resting phase before taking resting images. This code also determine radioactivity distribution counts arising from certain areas such as anterior wall counts may be reduced.

Hence, the correct option is a. 78452

Answer:

The correct answer is option C.

Explanation:

In most of the male animals the production of sperms takes place through the process of meiosis. Meiosis occurs only in 2n or diploid cells. Thus the most of the animals produce sperm due to their diploid nature.

In male bees the sperm production is different than other animals as it is haploid cell and haploid cells produce sperms through mitosis. In haploid cells mitosis helps in produce more sperms.

Thus, the correct answer is option C.