Viruses are not cells; they are a strand of genetic material within a protective protein coat called a capsid. They infect a wide variety of organisms, including both eukaryotes and prokaryotes. Once inside the cell, they use the cell's ATP, ribosomes, enzymes, and other cellular parts to replicate.
The characteristics that a virus cell possess with eukaryotic cell is that they both possess a genetic material.
What is an eukaryotic cell?An eukaryotic cell is a cell that has a genetic material bound by membrane-bound nucleus.
A virus cell, on the other hand, is a cell that is incapable of replicating itself without a living host.
However, one similarity between the eukaryotic cell and viral cell is that they both possess a genetic material that stores their genetic information.
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When the ranges of two different species meet, a stable "hybrid zone" occupied by hybrid individuals may form. How is this possible? When the ranges of two different species meet, a stable "hybrid zone" occupied by hybrid individuals may form. How is this possible? Two diverged populations are capable of mating and producing viable and fertile offspring. Hybrid individuals may have reduced fitness and thus be strongly selected against. Hybrid individuals are always allopolyploid and are thus unable to mate with either of the original species. One species has a selective advantage, so as hybridization continues, the other species will go extinct.
Answer:
Two diverged populations are capable of mating and producing viable and fertile offspring.
Explanation:
Although the biological concept of species says that two different species can not mate and produce viable fertile descendants, the hybrid zones are characterized for being an area where two different genetically groups meet and reproduce. These groups might be the same or different species.
This is a frequent phenomenon in nature, and widely common geographically and among taxonomic groups. It is not rear that different sympatric populations, with a short time of divergence and similar reproductive strategies, can hybridize and even generate new populations that get reproductively isolated from their parentals.
When talking about sympatry we refer to two similar species that coincide in part or their whole distribution area.
These new populations are even morphologically different from the parental forms, which allow them to colonize new habitats and niches, promoting diversification.
Hibridation zones are very important to conserve, just because they are points of genetic diversity generation and diversification areas.
When the ranges of two different species meet, a stable "hybrid zone" occupied by hybrid individuals can form. This is possible because hybrid individuals are always allopolyploid and therefore are unable to mate with any of the original species, to understand more we need to know that......
Hybrid animalsHybridization, that is, the process through which different species reproduce, generating an offspring, is not considered a very common phenomenon in nature. This is because, in general, species have a distinct number of chromosomes, the cell structures that contain genes. These differences in the number of chromosomes can make the development of the embryo unfeasible, as the alignment of equivalent chromosomes from the female and the male are necessary for the division of the fertilized cell to occur. When this alignment does not occur, the cell does not reproduce and dies. However, in some cases, even with the lack of chromosome pairs, reproduction between different species is successful, generating the hybrid. However, the birth of the individual does not mean that its survival is guaranteed. Often, the hybrid generated is weaker than its parents and does not survive; in other cases, the hybrid can adapt better to the environment than the species that conceived it.
With this information, we can conclude that hybrid animals are a cross between two different species, but this hybrid can have several complications for its survival.
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Which amino acid chain will be formed by the condons shown below?
Answer:
D. Gly Lys Cys
Explanation:
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8
9
The ability of an organism to change internally or externally in relation to changes in the environment is called
complexity
heredity
o homeostasis
reproduction
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ASK FOR HELP
Answer:
Homeostasis would be the answer out of those choices.
Explanation:
This is because they are adapting to their environment to ensure that their normal internal state is maintained.
After school, Kai feels hungry and tired. He finds some sugar cookies in the cabinet and finishes the whole package.
Which statements best describe the role of glucagon and insulin in this scenario?
O Glucagon was secreted by his pancreas before he ate the cookies because his blood glucose was low. Insulin
was secreted after he ate the cookies because his blood glucose was high.
O Insulin was secreted by his pancreas before he ate the cookies because his blood glucose was low. Glucagon
was secreted after he ate the cookies because his blood glucose was high.
O Glucagon was secreted by his pancreas before he ate the cookies because his blood glucose was low. After he
ate, insulin from the cookies increased his blood sugar levels.
O Insulin was secreted by his pancreas before he ate the cookies because his blood glucose was low. After he ate,
glucagon from the cookies increased his blood sugar levels.
Answer: Option A) Glucagon was secreted by his pancreas before he ate the cookies because blood glucose was low. Insulin was secreted after he ate the cookies because his blood glucose was high.
Explanation:When Kai was hungry and his blood glucose level was decreasing, glucagon is the hormone which was secreted by the islets of pancreas to increase the blood sugar levels in his body. Glucagon forces the liver to release the stored glucose in it, which increases the blood glucose level in the body. When Kai ate the sugar cookies there was enough of blood glucose available for his body, also it exceeded the requirement and went high. Insulin was then secreted to control this excess glucose from the islets of pancreas. As it helps the body cells to absorb the glucose and lowers the amount of glucose in the blood. It makes the cell available with the glucose to produce energy and perform their activities.
In short, glucagon and insulin both are secreted by the same organ which is islets of pancreas. But they differ in their function, glucagon increases the blood glucose when the body needs it, whereas insulin helps to absorb the excessive glucose and stores that in the body. Both are the hormones which help in regulating the body glucose levels.
During process of digestion which takes place in digestive tract statement which describes role of glucagon and insulin is glucagon was secreted by pancreas before he ate the cookies because his blood glucose was low. Insulin was secreted after he ate cookies because his blood glucose was high.
What is digestive tract?It consists of the gastrointestinal tract along with the accessory organs which are present in digestion process . It involves the breakdown of complex food into smaller components which can be easily assimilated and absorbed by the body.
The digestion process has 3 phases: cephalic phase , gastric phase and intestinal phase.Cephalic phase begins with secretion of gastric juices from gastric glands in response to sight and smell of food.It involves chewing and chemical breakdown of food by the action of digestive enzymes ,saliva in the mouth contain enzymes like lipase and amylase which are secreted by the salivary and serous glands present on the tongue.
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Where should keisha place an x
next to a but i dont study algebra sorry
Why do turtles hv paddle like flippers ?
Answer:
The answer is
Explanation:
Turtles have paddle like flippers to push back water while swimming.
Answer:
Turtles hv paddle like flippers so that they can push the water backward, move forward and swim easily
An ecologist samples the abundance of various species along an environmental gradient and fails to find clusters of species. Instead, peaks of abundance of dominant species are merely randomly spaced segments along a continuum. This distribution of species supports the
Answer:
This distribution of species supports Gleason´s Individualistic concept of a community.
Explanation:
This theory was proposed by Gleason and it states that plant species respond individually to environmental factors that continuously change at spatial and temporal levels. This means that the combination and distribution of plants in a certain point or area are unique because each vegetable species has a different distribution pattern and a different tolerance and abundance rate. Hence each species´ response curve to a certain gradient has its own shape and size and it different from other species curves.
Plants assembly growing in an area is the result of environmental conditions and migration rate of species. As every area is continuously getting propagules of different species, the survival success of each plant depends not only in environmental factors, but also depends on the tolerance to other new species and their interactions. This combination along a gradient always results in different composition and abundance of species. This is why a sample can not be confined to a clearly defined vegetable community.
This point of view is known as individualistic or continuum concept of vegetable community. Gleason believed that vegetable species were distributed as a continuum and that communities can not be identified as combinations of associated species that repeat in space.
what is the difference between your town's minimum temperatures yesterday? In your answer, list one explanation for why temperature changes during the day.
Answer:
Maximum temperature was 40 Celsius at daytime while temperature at night was 31 Celsius.
Explanation:
Yesterday maximum temperature was 40 Celsius at daytime while temperature at night was 31 Celsius because during daytime the intensity of sunlight increases the temperature of the particles present in the atmosphere. So at daytime, temperature increases while at night decrease occurs in the temperature. There is a lot of fluctuation in temperature at daytime due to increasing and lowering the intensity of light.
Answer:
The difference between the high and low temperatures in New York City was 12 degrees. One reason for the temperature difference is Earth’s rotation. Temperatures are generally warmer during the day because that side of the planet is heated by the Sun. At night, that side faces away from the Sun. So, temperatures will be cooler.
Explanation:
What features do plant cells have in common with animal cells?
Answer:
they both are cells boom
Explanation:
they kinda different do
Exceptions to the Central Dogma of Molecular Biology"" What is biggest revolution? Violation of Central dogma--- How &Why?
Answer:
reverse transcription
Explanation:
The central dogma of molecular biology states that the flow of the genetic information is unidirectional: DNA to RNA to protein. Thus, the central dogma indicates that a gene is always transcribed into a messenger RNA (mRNA) molecule, and then this mRNA is used as a template for protein synthesis during translation. Reverse transcription is an event that contradicts the central dogma since in this case there are enzymes known as reverse transcriptases that are capable of synthesizing DNA by using RNA as template. In eukaryotic cells, reverse transcription may occur naturally during the insertion of certain Transposable Elements (retrotransposons).
Which latitude lines does photoperiodism have the greatest effect? Why?
Answer: A short-day plant will not flower if light is turned on for a few minutes in the middle of the night and a long-day plant can flower if exposed to more red-light in the middle of the night. Cryptochromes are another type of photoreceptor that is important in photoperiodism. Cryptochromes absorb blue light and UV-A.
Explanation:
HELPPPP!!!!! Based on the diagram above, which of the following correctly describes the function and components of layer A?
A) movement; villi, blood vessels, lymphatic vessels
B) movement; muscles and connective tissue
C) absorption; villi, blood vessels, lymphatic vessels
D) absorption; muscle and connective tissue
Answer:
The correct answer is option C.
Explanation:
The given diagram is the representation of small intestine which is responsible for the absorption. The mucosa layer is the innermost layer of lumen of the small intestine that consist villi with blood vessels and lymphatic vessels.
The villi are the structure that are responsible for the absorption of food in the intestine by increase the surface are.The blood vessels and lymphatic vessels that are found near them takes the nutrient absorbed to the body.
Thus, the correct answer is option C.
Durante la explosión de una planta nuclear como la ocurrida en Chernóbyl en 1986, una persona se expone por un tiempo a esta radiación ¿qué daños a nivel molecular (ADN O ARN) podría sufrir? Y ¿cómo afectaría esto su salud y a la de su descendencia?
Answer:
mediante mutaciones en el ADN
Explanation:
El desastre ecológico de Chernóbil estuvo asociado a la liberación de importantes cantidades de radiación en forma de radioisótopos hacia la atmósfera, como producto de la explosión de un reactor que contenía toneladas de uranio radiactivo. La exposición a este tipo de radiación aumenta las probabilidades de sufrir mutaciones en la molécula de ADN. Dicho de otro modo, la radiación incrementa las chances de sufrir cambios en el material genético hereditario. Las mutaciones generalmente son corregidas por los mecanismos de reparación del ADN; sin embargo, existen ocasiones donde las mutaciones no son reparadas. Por otro lado, las mutaciones a menudo tienen efectos deletéreos y por lo tanto están asociadas a enfermedades, ya que los cambios en la secuencia genética provocan consecuentemente también cambios en las proteínas codificadas por estos genes. Por ejemplo, las mutaciones sufridas por genes supresores de tumores se encuentran asociadas a la aparición de células cancerosas por el mal funcionamiento de dichos genes. El efecto de la mutación depende del tipo celular que sufre la mutación: aunque las mutaciones sufridas por células somáticas pueden afectar la salud, estos tipos de mutaciones no son heredadas (simplemente porque las células somáticas no se heredan), mientras que las mutaciones sufridas por células germinales, es decir, en las células encargadas de la formación de gametos, pueden ser transmitidas a la descendencia.
If a vaccine protects you for most of your life against a particular pathogen, why do you need a new flu shot every year? A. Influenza evolves very quickly and its antigens mutate so that your memory cells from the last vaccine won’t recognize it. B. Influenza is so strong that you need a booster every year to make sure your body can fight it. C. Influenza is a virus, and vaccines only generate memory cells for bacterial infections. D. You don’t need it every year, it is just offered every year for anyone who does not have it yet.
Answer:
If you got a flu shot this year, next year you'll need it again.
Explanation:
This is because the virus changes, usually rendering the previous year's vaccine partly or totally useless. hope this helps you :)
Answer:
A.
Explanation:
Influenza evolves very quickly and its antigens mutate so that your memory cells from the last vaccine won’t recognize it.
The 2020 influenza vaccine was not as efficient because scientists were scrambling to put out a vaccine for Coronavirus. Consequently, Coronavirus cases skyrocketed during the flu season.
Hope this helped!
also.. i have to put coronavirus and not "c0vid-19" because apparently it's too political. lol.
What happens when the positive transcription factor affinity is slightly lower than the negative transcription factors affinity? A. mRNA is made in large quantities in infrequent batches B. mRNA is made in small quantities in frequent batches. C. mRNA is made in large quantities in frequent batches D. mRNA is made in small quantities in infrequent batches.
Answer:
a
Explanation:
a
Answer: a!!
Explanation: this is correct!
What characteristic of sexual reproduction did Mendel investigate that resulted in offspring expressing characteristics that differed from their parents?
Explanation:
Mendel crossed two unlike parents to get offspring with characterestics that differ that of the parents
Mendel used the characteristic of sexual reproduction in which the genes from the two parents combine to form the offspring. This results in offspring expressing the characteristics that differed from their parents.
What is Sexual reproduction?Sexual reproduction is a type of reproduction in which the production of new organisms occur by the combination of genetic information of the two parents or individuals of different sexes. In most of the species, the genetic information is carried on the chromosomes in the nucleus of reproductive cells called gametes, which fuse to form a diploid zygote in the organism which matures to form a complete organism.
Mendel called the material which is responsible for the characteristics as "factors", and he proposed that during sexual reproduction, each of the parent contributed a form of this factor to the resulting offspring. This combination of the parental factors then determined which form of a trait will be visible in the offspring.
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What is the function of the nucleus? A. Builds proteins B. Stores the cell's glucose C. Stores the cell's DNA D. Produces energy for the cell by respiration
[tex] \large{ \boxed{ \bf{ \pink{Stores \: the \: cell \: DNA(C)}}}}[/tex]
Nucleus is the control centre of the cell and manages all the cellular activities taking place inside the cell. It consists of four parts :-
Nuclear membrane, Nucleoplasm, Chromatin material and Nucleolus.The Chromatin material(Condensed - Chromosome) stores the cell's DNA which is transmitted to next generation.
Name four breeds of cattle
Answer:
Black Angus, Red Angus, Holstein, Gelbvieh
Hope this helps!
Find the weight of a pine tree that has a circumference of 14 inches and a height of 120 feet. Use the equation: W = b0 + b1(D2H)
Answer:
The answer is below
Explanation:
The weight of trees is calculated using the equation:
[tex]W=b_o+b_1(D^2H)[/tex]
W is the tree weight in tons, D is the diameter of the tree in inches, H is the height of the tree in feet and [tex]b_o \ and\ b_1[/tex] are constants.
The circumference is given by:
Circumference = 2πr
Where r is the radius and 2r is the diameter
Therefore:
14 = 2(22/7)× r
14 = (22/7)×2r
2r= 14 × 7 / 22
Diameter = 2r = 4.455 inches
[tex]W=b_o+b_1(4.45^2*120)\\W = b_o+2381.643b_1\\Let\ us\ assume\ b_o = -35,b_1=1.9.\\Therefore\\W = -35+2381.643(1.9)\\W=4490 \ tons[/tex]
the definition in a cladogram
Answer:
a branching diagram showing the cladistic relationship between a number of species
Which of the following group behaviors is primarily offensive, rather than defensive?
Answer:
Abusive behaviour, Discrimination or harassment are offensive.
Explanation:
Abusive behaviour, Discrimination or harassment are the behaviour which is offensive not defensive because in these behaviour people show aggression towards other people which is offensive in nature. These behaviour should be avoided because these behaviours hurt people and disturbance occurs in the society. These types of behaviour shows true color of the individual and the family he belong.
(05.05 MC) Exposing human subjects to experimental manipulations such as high levels of toxins is unethical. We often use model organisms for this reason. What attributes would you look for in selecting a good model organism for investigating the impact of toxins in humans? A good model organism should be able to be easily maintain in the laboratory, be fast growing, with a fast generation time and be as closely related to humans as possible. Cost is the only consideration in selecting a model organism, since all living things are made of cells anything found will apply to humans. The best choice will must be the very closely related to humans, such as chimps, since anything found in other species will not apply to humans. The most important consideration in selecting a model organism is how the public will feel about doing experiments on that species, so the best choice would generally be a very simple organism like bacteria that people don't care very much about.
Answer:
A good model organism should be able to be easily maintain in the laboratory, be fast growing, with a fast generation time and be as closely related to humans as possible.
Explanation:
The attributes that should be looked for in the selection of good model organism for investigating the impact of toxins in humans include:
Easy maintenance: The easier the maintenance of the organism, the better for both the research and the researcher. More can be achieved with less effort as opposed to high maintenance animals.Fast generation time: They should be able to grow and reproduce quickly so as not to prolong the experiment for too long. The lower the regeneration time, the shorter the time required to obtain adequate data for the research.Genetical similarity to humans: A good model organism for humans related study must share some similarities with humans at the genetic level. The more the genetic similarity, the more applicable the outcome of the research on humans.Hence, a good model organism should be able to be easily maintained in the laboratory, be fast-growing with a fast generation time, and be as closely related to humans as possible.
Drag each label to the correct location on the table. Each label can be used more than once.
Identify the voice used in each sentence.
Sentences
Voice
Phil went to a movie with his friends.
The peanut butter is being added
to the cake by the chef.
The blue dress had been put on
display by the store assistant.
Karl gave a touching speech at his
graduation ceremony.
Jacob's party will be attended by
everyone in town
Fred played with a monkey during
his first trip to a zoo
active
passive
Answer:
1. Phil went to a movie with his friends - active voice
2. The peanut butter is being added
to the cake by the chef - passive voice
3. The blue dress had been put on
display by the store assistant - passive voice
4. Karl gave a touching speech at his
graduation ceremony - active voice
5. Jacob's party will be attended by
everyone in town - passive voice
6. Fred played with a monkey during
his first trip to a zoo - active voice
Explanation:
In English language, the voice of a sentence can either be passive or active.
A sentence is said to be ACTIVE if the subject is performing the action (verb). Hence, the sentence is referring to the subject doing the verb's action directly. For example;
1. Phil went to a movie with his friends
2. Karl gave a touching speech at his
graduation ceremony
3. Fred played with a monkey during
his first trip to a zoo
These are examples of sentences (1,2,3) in active voice because the subjects are performing the actions in the sentence.
On the contrary, a sentence is in the PASSIVE VOICE when the subject is acted upon by the verb in the sentence. In other words, the subject becomes the receiver of the veeb's action. For example;
4. The peanut butter is being added
to the cake by the chef
5. The blue dress had been put on
display by the store assistant
6. Jacob's party will be attended by
everyone in town
The above examples (4,5,6) are all in passive voices because the subjects in the sentences are acted upon by the verbs.
Which of the following describes a positron emission tomography (PET) scanner? 1: A device that uses magnetic fields to produce images of brain structures 2: A device that uses magnetic fields to measure blood flow 3: A device that uses radioactive fluid to determine the active areas of the brain 4: An X-ray device that can create a 3D model of the brain
Answer:
3: A device that uses radioactive fluid to determine the active areas of the brain
Explanation:
A positron emission tomography (PET) scan is an imaging test that helps reveal how your tissues and organs are functioning. A PET scan uses a radioactive drug (tracer) to show this activity. This scan can sometimes detect disease before it shows up on other imaging tests.
Depending on the type of exam, the radiotracer is injected, swallowed or inhaled as a gas. It eventually accumulates in the area of the body under examination. A special camera or imaging device detects radioactive emissions from the radiotracer. The camera or device produces pictures and provides molecular information.
Smooth endoplasmic Reticulum has ribosomes attached to its surface. correct and rewrite the following.
Answer:
See below
Explanation:
The correct statements can be two of the following:
1) Rough Endoplasmic reticulum has ribosomes attached to it.
2) Smooth endoplasmic reticulum do not have ribosomes attached to it.
how are phenotypes impacted by mutations
Answer:
I guess phenotypes are not affected by mutations since mutations affect the gene structure of organisms while phenotypic characteristics are acquired through ones life time therefore no relationship between the two
Which of the following is found in the 'rungs' of a DNA strand?
A. Uracil
B. Thymine
C. Deoxy Ribose
D. Phosphate
Answer:
Thymine
Explanation:
who discovered micro organisms
Answer:
It was ROBERT HOOKE who discovered micro organisms and it was discovered in the period 1665-83 two fellows of the royal society.
Explanation:
In 1665 Hooke presented the first published depiction of micro organism.
Hope all these facts help.
What does "the process of making more of the same producing offspring" called?
Thanks..
Blood pressure is determined by:________. A. estimating the degree of turbulence in a partly closed vessel. B. listening carefully to the pulse. C. measuring the size of the pulse. D. estimating the pressure needed to close off an artery with an external pressure cuff. E. measuring the force of contraction of the left ventricle.
Answer:
D. estimating the pressure needed to close off an artery with an external pressure cuff.
Explanation:
