Why do you think that some vaccines, such as the flu vaccine, need to be given every year?

Answers

Answer 1

Answer:

Because flu viruses evolve so quickly, last year's vaccine may not protect you from this year's viruses. New flu vaccines are released every year to keep up with rapidly adapting flu viruses.

Answer 2

Answer:

Because the virus/sickness would evolve and that vaccine might not protect you.


Related Questions

Someone plz help me :(

Answers

Answer:

S. 32 f alsksjhdjduehoeidgdndkdhd

Somebody help me please

Answers

Steroids is the answer

which of the following is not caused by the electromagnetic force?

a light

b gamma rays

c gravity

d radio waves ​

Answers

Answer:

Gravity

Explanation:

The electromagnetic system consists of radiowaves, microwaves, infrared, visible *light*, ultraviolet, xray, gamma. Therefore, gravity would not be your answer. Hope this helped!

It is C. Gravity have a great day


1. If you were a forensic anthropologist, what would you be an expert in

Answers

Answer:

human remains

Explanation:

In this field, you study human remains

How does glycolysis contribute toward aerobic respiration, anaerobic respiration, and fermentation?​

Answers

Answer:

How does glycolysis contribute toward aerobic respiration, anaerobic respiration, and fermentation? Glycolysis produces pyruvic acid, which acts as a starting material for aerobic respiration, anaerobic respiration, and fermentation.

Explanation:

Which statement best explains why carbon is present in so many kinds of molecules?

A. It can form four covalent bonds.


B. It is abundant on earth.


C. It has valence electrons.


D. It can become an ion.

Answers

Answer:

A is the ans

Explanation:

hope it helps :p

Answer:

A. It can form four covalent bonds.

Explanation:

Clear-winged dragonflies live longer and can reproduce
many more times than yellow-winged dragonflies.
How is this population of dragonflies most likely to change as a result of this
difference?
O A. Dragonflies with yellow wings will evolve into ones with clear
wings
O B. Clear-winged dragonflies will become more common over time.
O C. The number of dragonflies will shrink until they become extinct.
O D. Yellow-winged dragonflies will become more common over time.

Answers

B. Clear-winged butterflies dragonflies will become more common over time.

are all fungi eukariotic?

Answers

fungi are eukaryotic because they have nuclei with nuclear walls and chromosomes

All organisms have the same feedback mechanisms that help them maintain homeostasis.


true/false

Answers

Answer:

True

Explanation:

Do all living organisms have mechanisms for homeostasis?

All living organisms have ways of maintaining homeostasis. They have mechanisms for controlling such factors as their internal temperature, water balance, and acidity.

The archer was shooting at the bullseye. What is the Best description of this attempt.
A. accurate but not prescise
B. Both precise and accurate
C. Precise but not accurate
D. Neither accurate nor precise

Answers

Answer:

b

Explanation:

the archer was taking their time and being precise

true or false? the endosperm in a seed develops into the embryo.

Answers

Answer:

the answer if false

Explanation:

the endosperm in a supply for the embryo

what are the abiotic and biotic factors for a wolf population living in northern Minnesota​

Answers

Answer:

hii there

A biotic factor for a grey wolf could be disease or predation, parasites, as long as there is a living thing interacting with your wolves, Abiotic is going to be nonliving things: weather, habitat destruction, wind, the prey cut off by a physical barrier

hope it helps

have a nice day : )

Answer:

The Abiotic factors would be rocks, soil, water, etc. The biotic factors would be the wolf, plants, trees, grass, and other predators and prey.  

Explanation:

I hope this helped. Next time, if you could please put a picture, that would be awesome. I hope you make a 100 on whatever you are doing.

how does the nucleolus's structure relate to its function

Answers

Answer:

The nucleolus takes up around 25% of the volume of the nucleus. This structure is made up of proteins and ribonucleic acids (RNA). Its main function is to rewrite ribosomal RNA (rRNA) and combine it with proteins. This results in the formation of incomplete ribosomes



what’s the correct choice?


bio

Answers

Answer:

There is no way to produce tall offspring since both parents are homo-zygous recessive.

Explanation:

parent plants are short because neither of them has at least one dominant "S" gene. As both of them have recessive "s" genes, they are scientifically known as homo-zygous recessive organisms. So produced offspring will never be tall as they don't have the dominant "S" gene transmitted from their parents. this is genotypically expressed as below.

offsprings: s1 s1, s1 s2, s1 s2, s2 s2

Compare and contrast the skeletal body system with immune system

Answers

Abstract

In the last two decades, numerous researchers have focused on elucidating the relationship between the skeletal and immune systems with respect to their regulatory mechanisms. It has now become clear that osteoclasts are derived from the same myeloid precursor cells that can differentiate into macrophages and myeloid dendritic cells. In addition, bone and immune cells coexist in the common microenvironment of the bone marrow and are thus influenced by similar mediators. Discovery of a common regulatory mechanism via the receptor activator of nuclear factor kappa-B ligand (RANKL)–receptor activator of NF-κB (RANK)–osteoprotegerin (OPG) axis in both the bone and immune system has not only increased understanding of the fundamental processes of bone homeostasis but has further crystalized understanding of the definitive regulatory correlation between bone and immunity. Moreover, many of the soluble mediators produced by immune cells, including cytokines, chemokines, and growth factors, regulate the activities of osteoclasts and osteoblasts. This increased recognition of the complex interactions between the immune system and bone has led to the development of the interdisciplinary field of osteoimmunology. In this review, we summarize the characteristics of bone cells and the soluble mediators responsible for crosstalk between the skeletal and immune systems. A more complete appreciation of the interactions between immune and bone cells should lead to better therapeutic strategies for diseases that affect either or both systems.

predict how many molecules of carbon dioxide are produced from the mitochondrial burning of one molecule of glucose?

Answers

Your awnser to the question is 3

Hope that helps :)

does carbonation slow the rate of alcohol absorption?

Answers

Answer:

a carbonated mixer had varying effects on the alcohol absorption rate. 14/21 subjects absorbed the alcohol with the carbonated mixer at a faster rate, with 7 subjects showing either no change or a decrease in rate.

Explanation:

Animal cells like to be in equilibrium
with their surroundings. What type of
solution would this be?
A. hypertonic
B. hypotonic
C. isosmotic
D. isotonic


Please help asap

Answers

Animal cells tend to do best in an isotonic environment, plant cells tend to do best in a hypotonic environment.

Answer:

D

Explanation:

when in this environment, water homeostasis is maintained and the cell will neither shrink or swell

what part of the cell cycle represents cell division?
PLEASE HELP

Answers

Answer: The mitotic phase.

Explanation:

The replicated DNA and cytoplasmic contents are separated, and the cell divides.

Explanation:

cell cycle is divided into two phases called as

1)interphase

2)Mphase

interphase= a period of preparation of cell division.

Mphase= the actual period of cell division.

hope it helped you......

during the process of ________, an existing tissue is replaced by bone.

Answers

Answer:

Tissues are replaced by bone during the ossification process.

Explanation:

Earthworms are?
A monocious
B diocious
C asexual
D asymmetrical

Answers

Answer:

A) Monocious

Explanation:

The two strands that make up the DNA double helix are said to be antiparallel. What does that mean?

Nucleotides containing adenine base pair with nucleotides containing thymine.

The 5' to 3' direction of one strand runs counter to the 5' to 3' direction of the other strand.

Base pairings create unequal spacing between the two DNA strands.

Answers

Answer:

The 5' to 3' direction of one strand runs counter to the 5' to the 3' direction of the other strand.

Explanation:

Antiparallel strands of a DNA molecule means that the phosphate groups at the start of two DNA strands are in opposite position (pole).

The DNA molecule is composed of two strands held together by hydrogen bonds. A single strand is different at its two ends. One end is called 5' (5 prime), the other is called 3' (3 prime). The names come from the notation for the two sugar carbon atoms which participate in the phosphodiester bonds. The different strands in the helix run in opposite (anti-parallel) directions. At each end of the double helix, one strand is 5' and the other is 3'.

Will you mark brainliest? Thanks and Goodluck..Glad to help.

“Astro” is to do with space, stars
True or False

Answers

True

Make me as brain liest

Astro refers to stars/outer space

in which direction does dna replication take place?

Answers

Answer: 5' to 3' direction

Explanation: New DNA is made by enzymes called DNA polymerases, which require a template and a primer (starter) and synthesize DNA in the 5' to 3' direction. During DNA replication, one new strand (the leading strand) is made as a continuous piece.

In a 200m race, athletes sprint the entire length. What type respiration is most likely occurs near the finish line.





Alcoholic fermentation



Photosynthesis



Aerobic respiration



Latic Acid Fermentation

Answers

Answer:

Running can take many forms, from a leisurely jog to an all-out sprint. But no matter what kind of running you do, your body needs to power itself through respiration. Lighter, long-distance running causes your body to use aerobic respiration, while more intense sprinting and interval training requires anaerobic respiration.

Explanation:

define dark reaction ?​

Answers

Answer:

: any of a series of chemical reactions in photosynthesis not requiring the presence of light and involving the reduction of carbon dioxide to form carbohydrate especially : calvin cycle.

19. A leaf is detached from a tree and tested with iodine. The leaf turns dark blue. (a) What does this result tell you? why is the results not sufficient to confirm photosynthesis took place​

Answers

Answer:

Starch

Explanation:

If the leaf goes blue and is tested with iodine. The results arent accurate if the leaf was free from starch in the first place. You also can't really say it's photsynthetis if there was starch in the leaf beforehand.

which layer consists on average of 25 to 30 layers of flattened dead keratinocytes.

Answers

Answer:

the Stratum Corneum

Explanation:

Definition most superficial layer; composed of 25-30 layers of flattened, dead keratinocytes constantly being shed and replaced

Which sub-unit makes up large molecules referred to as
polymers?

Answers

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Answer:

monomers

Explanation:

by the repetition of a specific monomer, a polymer is formed.

The HACCP system begins when the food is
and ends when the food is
Answers
А
thawed and cooked
B
delivered to the store and served to the Guest
prepared and served to the Guest
D
delivered and prepared

Answers

Answer:

What is B-  delivered to the store,  prepared and served to the Guest.

Explanation:

The HACCP system begins when the food is delivered to the store and served to the guest.

How HACCP system works?

HACCP : hazard analysis critical control point.

It is a management system that addresses food safety through analysis and control of biological, physical and chemical hazard.

There is a working flow of HACCP that ensures food safety begins from raw material production, procurement, handling, to manufacturing, distribution and consumption of the finished food product.

Hence, it can be said that HACCP system begins when food is delivered to the store and served to the guest that is consumption of the final product.

To learn more about HACCP system :

https://brainly.com/question/2957458

#SPJ2

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