Which kinds of pathogens caused most of the pandemics of the past

Answers

Answer 1

Answer:

bacteria pathogens caused most of the pandemics

Answer 2
Bacteria has caused most of the pandemics in the past because it can be created/grown on its own.

Related Questions

What effect does dietary protein have on the body?

Answers

Answer:

Even mostly or entirely plant-based diets can be high in protein. Protein is an essential part of a healthy diet. It helps to build and repair muscle, organs, and bones. High-protein diets have also been shown to be helpful with reducing fat, losing weight, increasing satiety, or a feeling of fullness, and retaining muscle.

The cell membrane (plasma membrane) is describe as a highly selective
barrier composed of alipid bi-layer. This structure plays an important role
in moving molecules across the cell membrane in order for the cell to
maintain homeostasis. If the cell is unable to take in the materials it needs
or remove vwhat it does not need, the cell may die. This inability of cells to
maintain homeostasis may cause sickness or even death of an organism.
Why is it important that the cell membrane is highly selective?
O So that the cell wall is stabilized and maintains its rigidity.
O To prevent certain ions and molecules from entering or exiting the celI.
O So that proteins and lipids can attach to the membrane where needed.
O To allow movement of materials in and out of the cel.

Answers

Answer:

O To prevent certain ions and molecules from entering or exiting the celI.

Explanation:

The cell needs to keep a constant chemical composition on the inside in order to mantain homeostasis

in which amino acid imidazole group found​

Answers

Answer:

Histidine contains imidazole group which can be uncharged or positively charged, depending on its local environment. Lysine & arginine contains positively charged R group while glutamate has negatively charged R group.

Choose one of the water management concerns listed below and give an example of where this is happening. Please cite your source and change the heading of your post to show which concern you are discussing. Make sure to also show how this impacts the water cycle.
a. withdrawing large quantities from streams, lakes, and aquifers.
b. increasing runoff by clearing vegetation from the land.
c. altering weather patterns by clearing vegetation.
d. increasing flooding by disturbing natural flood controls.

Answers

Answer:

Water Withdrawal: it has happened in some lakes in Minnesota

Explanation:

The water cycle is influenced by seasonal-climatic fluctuations and human activity. Water withdrawal is one of the human activities that most seriously affect the amount of water in lakes and aquifers by reducing water storage, thereby altering the flow in streams, lakes and wetlands. Concerning this situation, the state of Minnesota incorporated 1- the use of a US database (State Water Use Database, SWUD) with useful water use information on withdrawals and consumptive uses and 2- an index based on the sum of permitted water withdrawal from surface and groundwater. This index estimates the use of water as a percent of the surface water runoff to define and predict the vulnerability of lakes, using data from 54 stream gages recorded from 1988-2007. The catchment scores are scaled from 0 to 100 depending on the percent of runoff used.

Which is a component of cell theory?

Answers

Answer:

here are some points

Explanation:

A component of the cell theory is that all living things are composed of one or more cells. A component of the cell theory is that the cell is the basic unit of life.A component of the cell theory is that all new cells arise from existing cells.

The unit states that any animal that can be domesticated probably already has been. Explain the logic behind the statement and whether or not you find it convincing.

Answers

Answer:

Saying that if an animal can be domesticated that it probably already has been is saying that a lot of things are documented and if it has the capability to be domesticated or brought under human control then someone somewhere probably has. So I would personally find this convincing.

Explanation:

Hope that this helps and if so please mark me the brainliest. Peace and Love

Schizophrenia:
A. cannot be treated.
B. cannot be cured but can be treated.
C. can be cured with treatment.
D. is very common.
SUE

Answers

Answer:

B

Explanation:

cannot be cured but can be treated.

Which animal is the house cat closest to

Answers

Answer:

The closest relatives of domestic cats are the African and European wild cats, and the Chinese desert cat.

Explain how the conversation of wetlands to farmlands has impacted stream and rivers

Answers

Answer:

Wetland reduction has caused a decrease in the absorption zones for excess water. If the excess water cannot be absorbed by the soil, it increases the incidence and magnitude of flooding.

The conversation of wetlands to farmlands has impacted stream and rivers as the Wetland reduction has been caused the decrease in the absorption zones for excess water. If the excess water cannot be absorbed by the soil, it increases the incidence and magnitude of flooding and this can be achieved by sustainability.

What is the process of achieving Sustainability?

Sustainability can be achieved through careful resource management. By managing the resources and making proper use without wasting them ensures sustainability. The concept of sustainability demands careful and responsible people working towards a common goal of resources management.

A union is a term that refers to the association of workers of a company with the aim of defending and promoting their labor interests to the employer. The strike is a protest in which its members refrain from carrying out the activity they normally carry out to the detriment of those to whom they direct their claims.

Therefore, If the excess water cannot be absorbed by the soil, it increases the incidence and magnitude of flooding and this can be achieved by sustainability.

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Which statement BEST describes the effect of human urbanization on biodiversity in the Amazon
rainforest?
A
Human urbanization increases biodiversity because cleared land attracts more
species into an area
B
Human urbanization decreases biodiversity because habitats and resources are
lost to native species
С
Human urbanization increases biodiversity because of non-native species
introduced to the food web.
D
Human urbanization decreases biodiversity because limiting factors of the forest
ecosystem are reduced.

Answers

The answer would be D
Please mark me the brainliest ty

Human urbanization would generally decrease the biodiversity of any forest because habitats and resources are lost during the process of urbanization.

Urbanization refers to the process through which cities are created out of urban areas.

Cities are created by removing vegetation and erecting infrastructures such as buildings, roads, bridges, etc.

The removal of vegetation means that habitats of organisms would be lost as well as the biodiversity that constitutes the vegetation itself.

Thus, urbanization would automatically lead to a loss of biodiversity in the Amazon forest.

More on urbanization can be found here; https://brainly.com/question/25339405?referrer=searchResults

select the correct statement about connective tissue. connective tissue cells are surrounded by a matrix made up of protein fibers and ground substances. correct or incorrect?

Answers

Answer:

correct

Explanation:

access the capabilities of animal and plant cell types owing the presence or absence of chloroplast and cell wall

Answers

Answer:At this point, it should be clear that eukaryotic cells have a more complex structure than do prokaryotic cells. Organelles allow for various functions to occur in the cell at the same time. Despite their fundamental similarities, there are some striking differences between animal and plant cells (see Figure 1).

Animal cells have centrosomes (or a pair of centrioles), and lysosomes, whereas plant cells do not. Plant cells have a cell wall, chloroplasts, plasmodesmata, and plastids used for storage, and a large central vacuole, whereas animal cells do not.

Explanation: pls give me brainest

Emily has a class assignment to study conservation of energy and collisions she starts with two golf balls that hang from strings and hit each other when they swing explain how Emily's is the two golf balls that collide​

Answers

Answer

its the force of gravity

Explanation:

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Gravity an why out of all names Emily

List 2 natural hazards
due to Earth's internal
convection.

Answers

Any of these should work : Volcanic Eruptions, Earthquakes, Tsunamis, Landslides. ( I would recommend going for the first two).

One codon contains the instructions to make
- 1 protein
- 1 amino acid
- RNA

Answers

Answer:

1 protein

Explanation:

Which of the following is NOT an example of stored chemical energy?
glucose
ATP
bread
starch

Answers

Answer:

The answer is ATP

Many of the Mauryan Empire’s huge pillars originally were transported from quarries in __________ India.
A.
central
B.
eastern
C.
southern
D.
western

Please select the best answer from the choices provided
A
B
C
D

Answers

Answer:

I think its A. Central. Sorry if im incorrect

Answer: B. Southern

Explanation:

Which component of a galaxy is colorful and found in the space between stars

Answers

Answer:

dust

Explanation:

cause dusk can be any colors

Space between stars:

In astronomy, the interstellar medium (ISM) is the matter and radiation that exist in the space between the star systems in a galaxy. This matter includes gas in ionic, atomic, and molecular form, as well as dust and cosmic rays. It fills interstellar space and blends smoothly into the surrounding intergalactic space.

The component of a galaxy which is colorful is disk:

The various colors in a galaxy (red bulge, blue disks) is due to the types of stars found in those galaxy regions, called its stellar population.

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HI EVERYONE ^_^

Why the ureolytic bacteria produce CaCO3?

Answers

Answer:

Ureolytic bacteria hydrolyze urea to generate ATP by the efflux of ammonium ions through ATP-synthase, producing carbonate. In the presence of calcium ions in excess, calcium carbonate will precipitate.

replicate the following dna strand TAT-TAG-ATT-ACA

Answers

The replicated strand of DNA is. ATA-ATC-TAA-TGT

Adenine pairs with Thymine
Guanine pairs with Cytosine

If you have trouble remembering just think about it as curvy letters stick together(C,G), and straight letters go together (A,T)

The replication of the given DNA strand TAT-TAG-ATT-ACA is ATA-ATC-TAA-TGT.

What is DNA replication?

DNA replication may be defined as a type of biological process through which the genomic DNA of an organism gets copied into the cell during the time of cell division. During this process, the two identical replicas of DNA are produced from one original DNA molecule.

According to the context of this question, when it comes to DNA replication, adenine is replaced by thymine and vice-versa while guanine is replaced by cytosine and vice-versa. So, the amount of adenine remains equal to the amount of thymine and the amount of guanine remains equal to cytosine.

Therefore, the replication of the given DNA strand TAT-TAG-ATT-ACA is ATA-ATC-TAA-TGT.

To learn more about DNA replication, refer to the link:

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If any of y’all can give me the definition for these words I will give 5 stars ,like and brainlest or whatever it’s called

Answers

Answer:

rRNA - Ribosomal RNA, a molecular component of a ribosome, the cell's essential protein factory. Strictly speaking, ribosomal RNA (rRNA) does not make proteins. It makes polypeptides (assemblies of amino acids) that go to make up proteins

tRNA - Transfer ribonucleic acid (tRNA) is a type of RNA molecule that helps decode a messenger RNA (mRNA) sequence into a protein. tRNAs function at specific sites in the ribosome during translation, which is a process that synthesizes a protein from an mRNA molecule.

Explanation:

a type algae grows on a sloth. what must be true for the algae

Answers

Commensalism refers to a relationship in which one organism benefits, whilst the other organism is not affected. For this to be a commensal relationship, either the algae or the sloth must benefit, but not both, otherwise that would be mutualism.

Please give the answer for this!

Answers

for the first picture the stimuluis is light and the respons is phototropism(the plant is oriented towards the source of the light)

for the second picture the stimulus is the signt and smell of the food. the respons is salivary secretion

Answer:

1.

Stimulus: The light

Response: The plant gets light energy required to function

2.

Stimulus: The food in the bowl

Response: The dog digests the food absorbing nutrients needed to continue operating.

Hope this helps, feel free to give brainliest :)

when an earthquake occurs, data from one seismograph can tell you ____ .
Answer choices :
a) exactly where the epicenter is
b) how far away the epicenter is
c) in what direction the epicenter is

Answers

Answer:

How far away the epicenter is, C.

Explanation:

Seismographs record earthquake strength too.

Question 10 of 25
The development of cars has been good in some ways and bad in others. The
car has allowed for better transportation but it is also responsible for a great
deal of pollution. Which activity helps solve the pollution problem through the
use of new technology?
A. Encouraging people to walk more
B. Encouraging people to ride a bus
ОО ОО
C. Building cars that give off less pollution
D. Building fewer cars
SUB

Answers

I think it’s d :) hope this helps

Which statement best explains why this occurred?

Answers

there's no picture !

the person in the picture has a lot of potential energy? true or false

Answers

Answer:

True

Explanation:

Answer: he has a great smile and I don't spot a slouch, he looks aware of everything going on around him... I say the kid has potential energy

What is the resource in the plant that aphids eat?

Answers

Answer: Aphids are herbivores. They suck plant juices out of the leaves, stems, or roots of plants. The juices they drink often have much more sugar than protein. Aphids have to drink so much sugary juice to get enough protein that they excrete a lot of the sugar.

Explanation:

I can confirm that it is correct.^
Aphids feed on soft stems, branches, buds and fruits. They pierce the stems and suck the nutrient rich sap from the plant leaving damaged flowers and fruits :)

Can u help me please

Answers

Answer:

a. Organism B is most closely related to organism A because the percentage of DNA similarity is 97%

b. Organism D and Organism  A are the least closely related with a DNA similarity of 50%

c. Organism A and Organism  B most likely share a common ancestor because there DNA is alomst identical leaving you to beleive that they are closly related.

For what reasons could a theory be changed or replaced? Check all that apply.

A new, untested hypothesis is proposed.
New information is discovered that does not support the theory.
A single experiment produces results that differ from all previous experiments.
New technology is developed that provides more information about the theory.
New experimental methods are designed to test a theory.

Answers

1. New technology is developed that provides more information about the theory.

2. New experimental methods are designed to test a theory.

3. A single experiment produces results that differ from all previous experiments.

im not sure about #3 but it could be it

Answer:

A. New technology is developed that provides more information about the theory.

B. New experimental methods are designed to test a theory.

D. New information is discovered that does not support the theory.

Explanation:

just did it

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