why virus is imortal?​

Answers

Answer 1

Answer:

Strictly speaking, viruses can't die, for the simple reason that they aren't alive in the first place. Although they contain genetic instructions in the form of DNA (or the related molecule, RNA), viruses can't thrive independently. Instead, they must invade a host organism and hijack its genetic instructions.

Explanation:

Answer 2

Answer:

A flu is a virus and the reason that you have to get flu shots every year is because every time a virus enters a host it is mutated by the antibodies, cells and biology of that host, so it can be passed on to another host who may not be immune to every part of this NEW virus.

Explanation:

So your answer is both yes and no.


Related Questions

Explain the process of DNA isolation.

Answers

Answer:

Lysis, precipitation and purification

Explanation:

DNA isolation is a molecular biology technique based on the extraction of DNA and subsequent purification to remove inhibitors that may hamper the process of amplification. DNA isolation consists of three steps:

1- Lysis: it consists of the mechanical disruption of the cell, where the nucleus is broken to release DNA. During this process, it is required to use enzymes and detergents such as Proteinase K

2- Precipitation: during this process, the DNA is precipitated by using alcohol and salt.  

3- Purification: this process removes the impurities from DNA. Extraction is carried out by washing DNA with ethanol and water.

What type of cell transport is shown in the figure below?

Answers

Answer:

facilitated diffusion


The cycle that is critical for the formation of organic compounds is the ___cycle.

Answers

I’m pretty sure it’s the carbon cycle, it’s what I have on my notes, I’m sorry if it’s wrong tho

What 4 things do autotrophs need to carry our photosynthesis


Answers

Answer:

Chloroplast, light, water, and carbon dioxide

Answer the following:​

Answers

Answer:

1. they are simply arranged differently

2. 3 billion letters, could fill 5,000 books

3. 100 trillion cells

4. 99% of us have the same genetic code 0.1% of it is diffrent

The components of blood can be separated by spinning them at high speed.
Figure I shows a tube of blood that has been separated in this way.
Figure 1
substance X
white blood cells and platelets
red blood cells
- Identify the substance labelled X.

Answers

Answer:

Plasma

Explanation:

We don't have the figure, but I think the answer is probably plasma.

Blood plasma is the fluid that blood cells are suspended in. When blood is spun at high speed, the cells separate away from the plasma into different layers because of their different weights and shapes.

Plasma is liquid portion of blood. It transports nutrients and wastes and maintains  homeostasis.

What process brings energy and matter into living systems

Answers

Answer:

Photosynthesis

Explanation:

This is a role in the cycling of matter and flow of energy into and out of organisms. The flow of energy and cycling of matter can be traced.

energy needed to get a reaction started is called ?

Answers

Answer:

Activation Energy

Explanation:

Hope that helps :)

15 POINTS!!!!! Select ALL the correct answers.
Honey fungi grow on the bark of certain trees. The fungi get their energy by absorbing nutrients from the tree. The fungi have a parasitic relationship with the tree. What are two likely effects of this parasitism?
1. The tree will be damaged.
2. The capacity of the tree to reproduce will increase.
3. The growth capacity of the tree will be affected.
4. The tree’s energy requirements will be reduced.

Answers

Answer:

3 and 4

Explanation:

Answer:

3 and 4

Explanation:

just do it is right and I did a test on it and got a A+

so just go with it.

Match each tool with its influence on science

Answers

Answer:

xray - allows scientists to see dense structures

Microscope - view things that cannot be seen with the naked eye

Telescope - stars, planets and black holes

Ultrasound - see inside the body in real time

Explanation:

Xrays shows highlights dense structures within the body (bones). But is not in real time, usually there images that are captured and reviews later.

Microscope - the clue is in the name, think micro= tiny! Therefore cant be seen by the naked eye. The "scope" part of the word means to look at or observe. So put them together and you get to look at or observe tiny things.

Telescope - the first part of this word "tele", means something far away or at distance. Which gives a clue at what it does, add on the "scope" meaning of to look at or observe and you get; to look at or observe something that is far away.

Ultrasound - this is what is used to monitor the health of babies when they're still developing. It can be seen in real time.

X-rays enable researchers to observe dense formations. View objects using a microscope that is invisible to the eye. Telescope: black holes, planets, and stars see into the body in real-time using ultrasound.

What is the tool microscope's influence on science?

X-rays depict the body's dense internal architecture (bones). But it's not in real-time,  typically, pictures are taken and then looked at afterward.

The name of the instrument, "microscope," gives it away—think small! as a result, not visible to the eye. The word "telescope" refers to anything far out or remote in its first half.

When a baby is still developing, their health is monitored using ultrasound technology.

Therefore, view objects using a microscope that is invisible to the eye.

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Which one is the correct equation for calculating density? *
Density - Mass / Volume
Density - Mass / Weight
Density - Volume / Mass
Density = Volume / Weight

Answers

the correct answer is the first one. density = mass / volume.

i hope this helped!

Answer:

The equation for density is density = mass ÷ volume.

Explanation:

which would a scientist most likely examine to locate gene mutations?

Answers

Answer:

Single base pair mutations can be identified by any of the following methods: Direct sequencing, which involves identifying each individual base pair, in sequence, and comparing the sequence to that of the normal gene.

DNA is the molecule which is most likely to be examined to locate gene mutations. Thus, the correct option is A.

What are Gene mutations?

Genetic mutations are the changes to the DNA sequence which happen during the process of cellular division when the cells make copies of the DNA molecules. The DNA molecule tells body how to form and function well.

Genetic mutations are the changes which could lead to genetic conditions such as cancer, or they could help the humans to better adapt to their environmental conditions over a period of time.

Mutations can be of many different types, such as substitution, deletion, insertion, and translocation of the genetic sequence.

Therefore, the correct option is A.

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In order for a new species to develop, there must be a change in the
А) migration patterns of a population
B) genetic makeup of an existing species.
С) rate of succession in the environment.
D) temperature of the environment.

Answers

Answer:

its B, have a good day

Explanation:

What are two ways that variation can be described?

Answers

Answer:

varyatio of somthing and multiple varitons of it

Explanation:

The two ways that variation can be described are meiosis and evolution, because in the meiosis process, sexual reproduction occurs, and in the evolution process, changes in animals are seen and variation is observed.

What is variation?

When sexual reproduction occurs, there is variation seen because in meiosis genes cross over and recombinate, resulting in variation in offspring from their parents, but it is absent in asexual reproduction that is caused by mitosis or binary fission because here there is no variation in the offspring and the parents. The process of evolution introduces variation because, along with environmental factors, the animal genes are influenced too.

Hence, the two ways that variation can be described are meiosis and evolution, because in the meiosis process, sexual reproduction occurs, and in the evolution process, changes in animals are seen and variation is observed.

Learn more about the variation here.

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How is oceanic crust formed?

Answers

Answer:

it is constantly formed at mid-ocean ridges, where tectonic plates are ripping apart from each other.

What is the diffrence between type 2 and type 1 diabietes

Answers

Answer:

People with type 1 diabetes don't produce insulin. You can think of it as not having a key. People with type 2 diabetes don't respond to insulin as well as they should and later in the disease often don't make enough insulin. You can think of this as having a broken key.

Describe the structure of an amoeba .....in short form​

Answers

Answer:

Structure of amoeba primarily encompasses 3 parts – the cytoplasm, plasma membrane and the nucleus. The cytoplasm can be differentiated into 2 layers – the outer ectoplasm and the inner endoplasm. The plasma membrane is a very thin, double-layered membrane composed of protein and lipid molecules.

Explanation:

:)

Answer:

The structure of amoeba is primarily composed of 3 parts – the cytoplasm, plasma membrane, and the nucleus.

Explanation:

Hope this helps!

What component of Earth’s atmosphere exists entirely as a result of photosynthesis?
oxygen gas
water vapor
nitrogen gas
carbon dioxide gas

Answers

Answer: Oxygen

Explanation: Oxygen is primarily produced by photosynthesis.

Answer:

oxygen gas

Explanation:

during the process of photosynthesis in plants the final product is oxygen gas

Cells that actively produce proteins will contain large numbers of?

Answers

Answer:

Mitochondria

Explanation:

Because mitochondria is the power house of the cell, hence it  provides energy.

How might this change affect the structure and function of the protein?

Answers

Answer:

Explanation:

Three-dimensional folding of a protein is due to interactions among the R groups of the amino acids. Cysteine has a sulfhydryl group, which may form a disulfide bridge with another part of the polypeptide chain. Valine has no sulfhydryl group and is nonpolar, which will affect how the polypeptide will fold.

i need the awnsers asap!! please and thanks

Answers

Answer:

C

Explanation:

Explain how a change in the sequence of nucleotides in a strand of DNA might cause a protein to malfunction

Answers

Answer:

As a result of a change in the sequence of nucleotides in a strand of DNA (Deoxyribonucleic acid), the amino acids also change in the final protein which leads to protein malfunction.

Explanation:

As a result of a change in the sequence of nucleotides in a strand of DNA (Deoxyribonucleic acid), the amino acids also change in the final protein which leads to protein malfunction. If insulin does not work correctly, it may not be able to bind to the insulin receptor.

DNA contains genetic information. It has a double helix structure.

Which macromolecules provides quick energy breakdown?

Answers

Answer:

carbohydrates provide quick energy

7)
Lenny accidentally drops his matchbox car into a graduated cylinder. The car has a mass of 10 grams and the water level in the cylinder rises from 41 ml to 46 ml. Determine the density of the matchbox car. The formula for density is D =
m
v
.
A) 0.5 g/ml
B) 2 g/ml
C) 15 g/ml
D) 50 g/ml

Answers

Answer:

B) = 2 g/mL

Explanation:

Given data:

Mass of car = 10 g

Volume of water = 41 mL

Volume of water+ car = 46 mL

Density of car = ?

Solution:

Density is equal to the mass of object divided by volume of object.

Formula:

d = m/v

volume of car =  Volume of water+ car - Volume of water

volume of car = 46 mL - 41 mL

volume of car = 5 mL

d = 10 g/ 5 mL

d = 2 g/mL

1. clumped population dispersal ___ resources
a) share
b) compete
c) are independent of
d) disperse

2. The level in which a population can no longer grow due to limited resources is referred to as,
a) K, carrying capacity
b) L, limited growth rate
c) D, death rate
d) N, no more nutrients

3.Most life on Earth exhibits which form of population growth curve?
a) logistic
b) exponential
c) algebraic
d) deductive

Answers

Answer:

compete

limited growth rate

logistic

Explanation:

termites are insects that feed on wood, which contains cellucose. scientist have observed that some termite species prefer wood that has been attacked by fungi. Construct an explanation for this observation

Answers

Answer:

In this observation, the termites and the fungi rely on each other in order for survival. In other words, they have a symbiotic relationship. This type of fungi helps the termites by digesting cellulose from the wood since termites are unable to digest it. In turn, the termites provide the fungi an environment where they can be cultivated. This explains why termites prefer a wood that was inhabited by fungi.

RESULT

In this observation, the termites and the fungi rely on each other in order for survival. In other words, they have a symbiotic relationship. This type of fungi helps the termites by digesting cellulose from the wood since termites are unable to digest it. In turn, the termites provide the fungi an environment where they can be cultivated. This explains why termites prefer a wood that was inhabited by fungi.

Explanation:

Hope this helps

Crown me as brainliest:)

Choose the most appropriate name for the function described below The height reached by the rocket depends on the amount of fuel
A.Height(fuel),or H{f}
B.Fuel{height},or F[h
C.Fuel{rocket) or F{r}
D.Height{rocket}or H[r}

Answers

B. Fuel{height},or F[h

Which structures are not found in simple leaves?

Answers

Chloroplast, leaflets, veins, stomata
The answer is leaflets. They are found in compound years

Which of the following is not an example of mechanical control of nonnative species?
a.
pulling
b.
inspections
c.
net barriers
d.
mowing

Answers

Answer:

it's A

Explanation:

Answer:

A. PULLING

Explanation:

Edg 2020

In what cellular function does the structure here play a role

Answers

Answer:

BRAINLIEST PLZZZ

Explanation:

They play a major role in protein synthesis. They act as the powerhouse for the cell. They are involved in the separation of chromosomes during cell division.

Answer:

Protein synthesis

Hope this is helpful

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