How do plants get the nitrogen they need?

A.
From bacteria living in their roots

B.
From the air

C.
Directly from the soil

D.
Through photosynthesis

Answer:

The reaction with adenine dideoxynucleotides will run furthest in the gel

Explanation:

In dideoxy sequencing (also known as Sanger sequencing), the DNA template is used to run four different reactions in which only one class of dideoxynucleotide (ddNTP) is added. These four different ddNTPs (i.e., ddATP, ddCTP, ddTTP or ddGTP) act as terminators during DNA synthesis. Moreover, the additional factors required for DNA synthesis including standard deoxynucleotides (dNTPs), DNA polymerase and site-specific primers are added in equal volumes to prepare these four different reactions. Thus, during electrophoresis, the sizes of the DNA bands will depend on the specific ddNTP used in each reaction. In this case, the reaction containing ddATP (capable of terminating DNA synthesis at the 5' end) will run furthest in the gel.

Hello. You did not enter the answer options, but I can help you by saying that a genotype would affect the survival of a species in its natural habitat if that genotype establishes a disadvantageous characteristic for that habitat.

For example: We know that the Arctic foxes have genotypes that allow them to have a white color very advantageous for their natural habitat. That's because the white color, makes the fox camouflage itself in the environment surrounded by snow and equally white. This allows the fox to go unnoticed by possible predators, that is, its genotype favors the survival of the species. On the other hand, if the arctic fox genotype established a red color in the animal, it would affect its survival, in relation to its natural habitat. This is because it had not allowed the animal to camouflage itself in the environment, leaving it exposed to predators.

b. It will produce a limited variety of gametes with certain alleles being always passed on together.

Crossing over is a process that happens during meiosis, where the 23 chromosomes from the mother mixes with the 23 from the dad, creating an individual with an unique combination of genes. The only chromosome that does not do crossing over is the chromosome Y, because it is too different from his counterpart, the chromosome X.

Answer:

the misinformation effect

Explanation:

In psychology, misinformation effect occurs when false memories are formed as a result of the misleading information that was provided after the original event has taken place. This effect was studied by a psychologist named Elizabeth Loftus.

Elizabeth Loftus in her series of experiments discovered that false memories about an event can be induced by suggesting or giving wrong information about it. Hence, the involved persons remember a wrong information about the experienced event based on what they were led to remember via wrong information.

This is the case Felice, who was fed with a wrong information about the scar on her arm. This information make her have a false memory of the event i.e dog bite instead of a broken glass

an example could be:

quietest noise - a clock

loudest noise - family members talking

distractions - a TV show

Answer:

15 min

Explanation:

Answer:

5-20 minutes

Explanation:

On a good day with not much poop and it's easy to come out it will take around 5 minutes. On a bad day though with lots of poop and where it's very hard to come out to the point where you have to constipate yourself, it will take around 20 minutes.

Answer:

rr

Explanation:

Dominant alleles will always be visible on a creature if they are at all present, such as with brown eyes in humans (i.e. Rr or RR). People with blue eyes (or fruit flies with white eyes) possess two recessive alleles (rr), which is the only way for a recessive trait to be present.

In fruit flies, the allele for red eyes, R, is dominant. Which genotype represents a white-eyed male fruit fly?

The answer is XrXr

Answer:

Stem cells are the every organ and tissue that in your body.

Explanation:

The Stem cell are the many different types of the place in the body part they all are time in lives different .Stem cells are the fetal development during in the body.

Stem cells are very different  and critical abilities, cells very widely that can not do certain things.

There are many types of cells in their:- Tissue specific cells ,

Embryonic cells, Induced stem cells.

Tissue specific cell:- This types of cell are more specialized the Embryonic cells.

Embryonic stem cell:- This types of cell are obtained the inner cell in the human forms, this cells retain in the special laboratory conditions.

Induced cell:- This types of cell are developing and testing drugs.

Answer:

f. Domain

g. Kingdom

c. Phylum

e. Class

a. Order

h. Family

b. Genus

d. Species

Answer:

The answer is binary fission.

Explanation:

Binary fission is the process of reproduction by bacteria in which they divide into two cells.

They do this about every 20-30 minutes, this fast rate of reproduction could be best be used to explain why bacteria can infect a person very quickly.

Answer:

B. Binary Fission

Explanation:

Um. BeCaUsE

Answer:

Transcription begins in the nucleus when RNA polymerase unzips a DNA molecule.

RNA nucleotides align themselves to complementary base pairs and in this manner messenger RNA is formed.

In eukaryotes must be processed before it leaves In the nucleus.

One end is modified with the addition of a cap and the other end is modified with the addition of a poly-A tail. Some sections called introns are edited out, leaving only exons remaining.

Then, the messenger RNA leaves the nucleus and enters the cytoplasm where it awaits the process of translation

Explanation:

Transcription is the process in which DNA becomes RNA. In this protein synthesis, transcription occurs in the nucleus while translation in the cytoplasm. In the first one, which is transcription, a messenger RNA is produced. In the seceond one, an amino acid sequence is produced in the ribosomes.

*Take into account there were two options missing that I added because they were the only correct answer. "In eukaryotes must be processed before it leaves In the nucleus" the only right answer is eukaryotes, because prokaryotes don't have nucleus. The other situation was in "Then, the messenger RNA leaves the nucleus and enters the cytoplasm where it awaits the process of translation" the only option given was "transcription". The right answer is "translation" because this one occurs in the cytoplasm, and transciptrion in the nucleus.

Answer:

Explanation:

Mitochondria and Chloroplast contain some  Ribosomes which are different from the cytoplasmic ribosomes,These were measured to be 80s,while the Mitochondria and Chloroplasts are 70s.

Furthermore smaller circular DNA were found in theses two organelles,(which are the first DNA outside nucleus).These DNA types are the exact forms found in bacteria.

Thus, it was concluded that if these organelles could contained these genetic materials,they must  be bacterial.Therefore chloroplast and mitochondria were  ancient bacterial which  now live  in a mutual exclusive relationships in the larger cells of Eukaryotas(plant and animals).This is the basis of Endosymbiont theory.

That is these organelles  live inside(Endo) new host in symbiosis or  beneficial association with one another (symbiont).

The type of plate boundary that an image is expressing is known as convergent. Thus, the correct option for this question is C.

A plate boundary may be defined as a type of location where two specific plates meet. These boundaries are generally associated with numerous geological events like earthquakes.

According to the context of this question, plate boundaries govern the three-dimensional surface or zone across which there is a significant change in the velocity that may take place.

Convergent plate boundaries may be characterized as a type of plate boundary when two or more specific plates come together in such a way that they meet. At this boundary, two or more lithospheric plates collide. One plate eventually slides beneath the other.

Therefore, the type of plate boundary that an image is expressing is known as convergent. Thus, the correct option for this question is C.

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Answer:

The correct answer is coronary artery disease.

Explanation:

The narrowing of blockage of the coronary arteries, generally resulting due to atherosclerosis is known as coronary artery disease. Atherosclerosis also is known as the clogging or hardening of the arteries and is the accumulation of fatty deposits and cholesterol on the artery's inner walls.  

These fatty deposits of plaques can prevent the flow of the blood to the muscles of the heart by physically choking the artery or by resulting in unusual artery function and tone. In the absence of a sufficient supply of blood, the heart becomes deficient of the essential nutrients and oxygen it requires to function appropriately. This can further result in angina or chest pain.  

Answer:

a. True

Explanation:

Cellular Respiration is the process by which cells of all living organisms obtain the required energy for their metabolic activities. Respiration is a catabolic process whereby glucose is broken down to release Its high energy and used to synthesize a usable form of energy by the cell (ATP).

Cellular respiration occurs in living cells with oxygen (aerobic) or without oxygen (anaerobic). In aerobic respiration, three processes viz: Glycolysis, Kreb's cycle and Oxidative phosphorylation are involved. Oxygen is the final electron acceptor in the Electron transport chain of the Oxidative phosphorylation.

On the other hand, anaerobic respiration is employed by certain bacteria in the absence of oxygen. In anaerobic respiration, another final electron acceptor is used other than oxygen.

Both processes yield Adenosine triphosphate (ATP).

Answer: C

Explanation:

Gel-electrophoresis separate macromolecules according to their size and charge. In the exposed example, the well that contains a 17.15kb fragment but not a 2.03kb fragment is number 2 (Option B) (based on the attached image).

---------------------------------

Gel-electrophoresis is a technique widely used in labs to separate macromolecules, like DNA, RNA, and proteins.

This technique is based on the size and charge of the molecules. It expresses a pattern of differentiation according to the length of the fragments.

Once placed in the gel, molecules start their migration. Smaller molecules will travel faster and farther than the bigger ones.

So whenever we see a gel-electrophoresis result, we know that the largest fragments are placed in the first position, while the smallest ones are in the last position.

In the exposed example, we know that the smallest fragment is 2.03kb, while the largest one is 17.15kb.

We assume that largest fragment will be placed in the first position, and the smallest one will be placed in the last position.

We need to find a well that has fragments of 17.15 kb but not fragments of 2.03 kb.

So let us find the well in which there are molecules in the first position but not in the last one.

Note: In the attached files, you will find a gel-electrophoresis result image on which I base my answer. If this image is different from yours, choose the correct well in your gel-electrophoresis following the same reasoning.

The correct well is Two (Option B). Molecules have migrated to the first position but not to the last one.

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Answer:

the answer is antigen.

Answer: A. Since 2000, there has been an increase in the number of people living with HIV, but a decrease in the number of people newly infected with HIV.

Explanation:

The statement "Since 2000, there has been an increase in the number of people living with HIV, but a decrease in the number of people newly infected with HIV" best supported by the data in the graph. Hence, option A is correct.

The virus known as HIV (human immunodeficiency virus) targets the immune system of the body. HIV can cause AIDS (acquired immunodeficiency syndrome) if it is not treated. Right now, there is no efficient treatment.

Nevertheless, since 1996, there have been fewer new infections. For this reason, we can assume that if we look at the year 2000, we will observe that there was a rise in the number of HIV-positive persons but a decline in the number of HIV-positive people.

Therefore, since 2000, there has been an increase in the number of people living with HIV, but a decrease in the number of people newly infected with HIV.

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The given question is incomplete, so the most probable image of the  question is attached below.

Answer:

plss mark me as BRAINLIEST

Explanation:

Human activities have greatly increased carbon dioxide levels in the atmosphere and nitrogen levels in the biosphere. Altered biogeochemical cycles combined with climate change increase the vulnerability of biodiversity, food security, human health, and water quality to a changing climate.

Answer:

First the proprioceptors found in the tissues will capture tissue damage and the presence of a continuity solution in the skin, then these receptors will activate the afferent pathway, which is the pathway of pain, which is sensory.

This stimulus that ascends to the central nervous system activates the "flight" mechanism in the face of pain (it is also known as the withdrawal mechanism).

It is in this way that a stimulation is sent to the alpha motor neuron in the form of an action potential as an efferent pathway to the skeletal muscles of the foot and the damaged leg, so that an automatic and involuntary muscle contraction is generated in a matter of millisemas of second after the damage, so the foot is removed from the damage area.

Explanation:

The withdrawal mechanism is a reflex that the human acquires before pain, that is why it is the muscular contraction is automatic and fast once the pain occurs.

So as a summary: 1 - the proprioceptors of the damaged tissue are activated 2- the signal of tissue damage rises as afferent to the CNS 3- the CNS responds by activating a signal that will be sent by interneuronal connections to the alpha motor neuron 4- the signal arrives as potential of action to the alpha motor neuron that innervates the muscles of the surrounding area to which it is damaged 5 - the muscles contract, generating the withdrawal of the limb.

Answer:

A. Reduction in soil mass proved that plants get their food from the soil.

Explanation:

Plant take their food from the soil because in soil roots are present which absorb nutrients from the surrounding environment. The nutrients present in the soil comes from the decomposition of dead bodies of plants and animals and sometimes it is provided by the farmers in the form of fertilizers. The plant food contains nitrogen, phosphorus and potassium which is required in large amount for the better growth and development of the plant.

Answer:

Explanation:

[tex]\neq \neq \neq \neq \neq \neq \leq \left \{ {{y=2} \atop {x=2}} \right. \left[\begin{array}{ccc}1&2&3\\4&5&6\\7&8&9\end{array}\right][/tex]

hypothesis is proposed answer to a scientific question.

hope this answer is correct ..

Answer: Option E.

DNA micro array.

Explanation:

DNA microarray is a technique that involves hybridizing cDNA into a chip that contains thousands of single stranded DNA sequences. This technique enables one to study expression of thousands of genes at the same time.looks for extra (duplicated) or missing (deleted) chromosomal segments, sometimes called copy number variants (CNVs).

DNA microarrays are microscope slides which are printed with thousands of tiny spots in specific different positions, and each of the spots contain a known DNA sequence or gene.

primary use of DNA microarrays is transcriptional profiling.

The basic principle behind the DNA microarray is “ nucleic acid hybridization.

Answer:

1.fungi,   2.fungi     3.monera   4.fungi   5. protista  6. animalia

Explanation:

since, yeast is a fungus , penicilium and mushroom (agaricus) also fall under this catergory due to the presence of mysceliom and hyphae.

rizobium is a bacteria so falls under the kingdom monera

amoeba has locamotory organs hence is a part of the protista kingdom

while , fish is an animal and thus belong to animalia

Answer:

They died due to suffocation.

Explanation:

The whole Lannister’s family died due to the shortage of oxygen in the room because of squirrel’s nest in the chimney. Chimney is the only way for the removal of toxic gases and smoke produced from the burning of wood. The squirrel’s nest block the passage and the smoke and toxic gases stay in the house which causes suffocation and the whole Lannister’s family died.

Answer:

See attached image for detailed punnet squares and diagrams

a) F1 generation: Purple flower and spiny pods (PpSs) offsprings

b) F2 generation: Puple flower, spiny pods (9), Purple flower, smooth pods (3), White flower, spiny pods (3), white flower, smooth pods (1).

c) The progenies are: PpSS (4), PpSs (4), ppSS (4), and ppSs (4)

d) The progenies are: PPSs (4), PPss (4), PpSs (4), Ppss (4)

Explanation:

This question involves two distinct genes in jimsonweed; one coding for flower colour and the other for pod texture. The alleles for purple colour (P) and spiny pods (S) are dominant over the alleles of white flower (p) and smooth pods (s) in the two genes respectively.

A true-breeding plant with white flowers and spiny pods will have genotype: ppSS while a true-breeding plant with purple flowers and smooth pods will have genotype: PPss. In a cross between these two parents, the following combinations of gametes will be produced:

ppSS- pS, pS, pS and pS

PPss- Ps, Ps, Ps, PS

a) Hence, the F1 offsprings from this cross will possess a heterozygous genotype: PpSs, which is phenotypically purple-flowered and spiny-pod.

b) if the F1 offsprings are self-crossed i.e. PpSs × PpSs, gametes PS, Ps, pS, ps will be produced by each parent. These gametes will be used in a punnet square (see attached image) to produce the following F2 offsprings in proportion:

Purple flower, spinny pods (9)

Purple flower, smooth pods (3)

White flower, spiny pods (3)

White flower, smooth pods (1)

c) if the F1 offsprings are crossed back with the white, spiny parent i.e. PpSs × ppSS. The following progeny of offsprings will be produced: (see attached image)

PpSS (4),

PpSs (4),

ppSS (4), and

ppSs (4)

d) if the F1 offsprings are crossed back with the purple, smooth parent i.e. PpSs × PPss, the following progeny will be produced:

PPSs (4),

PPss (4),

PpSs (4), and

Ppss (4)

The true breeding plant.

As per the question, the jimson weed is a purple flower with capital P and is dominant to white (p) and a spiny pods of (S) which are dominant to smooth (s). The Punnett square method is used for the method. The true breeding have seperate types of genetic make ups.

Answer is F1 generation (PpSs), F2 generation has 9 purple flowers.

Learn more about the purple flower.

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Answer:

generation 1

Explanation:

The allele frequency is a term that represents the frequency that an allele can appear in a given population. This term can help to develop conclusions about the genetic diversity that a region presents in relation to the individuals that compose it.

In relation to the question above, generation 1 had the highest frequency of having one of each allele. This is because this generation presents the maximum frequency of the dominant and recessive alleles in a coherent way, 0.60 and 0.40. However, the other generations showed a steady and progressive decrease in the recessive allele.

Answer:

Gen 1 or A

Explanation:

Please give me brainliest I need l  need to level up.

Answer Explanation:

Due to technical difficulties, the answer and explanation for this problem are available in the attached file.