4. Who discovered the first known case of a typhoid carrier?
Answer:
Mary Mallon (September 23, 1869 – November 11, 1938), also known as Typhoid Mary, was an Irish-born cook believed to have infected 53 people with typhoid fever, three of whom died, and the first person in the United States identified as an asymptomatic carrier of the disease pathogen, Salmonella typhi.
Answer:
mary mallon
Explanation:
Mary Mallon, the first known case of a healthy carrier in the United States, was proven responsible for the contamination of at least one hundred and twenty two people, including five dead
What is the biology
Answer:
science that studies living things
Explanation:
it includes plants and animals so basically anything that has life
Answer:
Biology is the study of living organisms, divided into many specialized fields that cover their morphology, physiology, anatomy, behaviour, origin, and distribution.
Explanation: Branches of biology are different topics related to biology; for example the 3 major branches of biology are:
Botany, also called plant science, plant biology or phytology, is the science of plant life and a branch of biology. A botanist, plant scientist or phytologist is a scientist who specialises in this field
Zoology is the branch of biology that studies the animal kingdom, including the structure, embryology, evolution, classification, habits, and distribution of all animals, both living and extinct, and how they interact with their ecosystems.
Microbiology is the study of microorganisms, those being unicellular, multicellular, or acellular. Microbiology encompasses numerous sub-disciplines including virology, parasitology, mycology and bacteriology.
10. Since I contain many enzymes,
I can digest an injured cell;
And can break down a large molecule
Into a smaller one as well.
What am I
Answer:
Lysosomes
Your Welcome!
hich elements are most like to form a binary ionic compound?
Select one:
a.
sodium and aluminum
b.
calcium and potassium
c.
phosphorus and oxygen
d.
lithium and nitrogen
e.
hydrosulfuric acid
A pair of elements will most likely form an ionic bond if one is a metal and one is a nonmetal. These types of ionic compounds are composed of monatomic cations and anions.
Which of the following is a characteristic of hydrologic fracturing?
A. Large amounts of water force open cracks in rocks
B. Removal of topsoil to reach water supply
C. Transportation of coal via waterways
D. Use of machinery underground to mine coal
Answer:
A. Large amounts of water force open cracks in rocks
Explanation:
Hydraulic fracturing, or fracking, is a drilling method used to extract petroleum (oil) or natural gas from deep in the Earth. In the fracking process, cracks in and below the Earth's surface are opened and widened by injecting water, chemicals, and sand at high pressure.
A is basically explaining this the same way. Forcing cracks in the ground with liquids.
Hopefully I was a help to you. If not I am sorry and I wish you the most wonderful of days. :)
What does mRNA do?
1. carry
carry coded message from the genes to the ribosomes where proteins are built
2. carry amino acids to the ribosomes
3. make up ribosomes
4. help with RNA splicing
Answer:
The answer is 1. Carry coded message from the genes to the ribosomes where proteins are built.
Explanation:
mRNA stands for messenger RNA, so 1 would be correct.
Hope this helps!!
Angular Momentum can be expressed
as which of the following
a. L = MPR
b. L = VRM
c. L = VPM
While distinctly Anthropoids, some Platyrrhines maintain a few of traits that are typically represented only in Prosimians. For this question, identify the seemingly primitive traits and discuss how their presence in both Platyrrhines and Prosimians may reflect an example of convergent (parallel) evolution. (150-250 wds)
Convergent evolution is the concept of two or more species evolving similar traits despite being completely unrelated to one another, including the absence of a common ancestor.
The Platyrrhines, more commonly known as "New World Monkeys", share many characteristics with the Prosimians. Some of these include:
Teeth layoutDietEyesight Sleeping habitsand more.
The Platyrrhines and the Prosimians are both nocturnal animals. Despite all other members of their family being active during the day, the Playrrhines have evolved nocturnal habits similar to that of the Prosimians. Aside from that, they feed on insects more so than fruit, which is reflected by the layout of their teeth, and have eyesight well adapted to dark conditions. All of these are traits they share with the Prosimians.
Despite being in different ecosystems and regions, and sharing no recent common ancestors, both of these species have evolved strikingly similar traits. This can be used to corroborate the theory of convergent evolution, which explains how two species can evolve very similar traits despite being unrelated.
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Provide a potential hypothesis for the research topic and
explain whether the data support it. Also, explain the
reasons for the observed data trends.
Answer:
i think that the higher the body temperature the higher the cellular respiration
Explanation:
The graph indicates the relationship between body temperature and cellular respiration. As the body temperature increases, more ATP is produced, but after a certain temperature, there is no cellular respiration.
What is cellular respiration?In cellular respiration, the cell breaks down glucose and forms ATP. Glucose is broken down by glycolysis, the Krebs cycle, the electron transport chain, and finally ATP is formed.
In the graph, it is shown that an increase in body temperature is related to an increase in ATP molecule production. ATP molecule production is nearly zero at 80 degrees body temperature. As the temperature increases to 100 degrees, ATP production increases to nearly 50.
After 100 degrees, the body temperature rises, but there is a decrease in ATP production. After 100 degrees, the enzymes required for cellular respiration don't work. Hence, a decline in ATP is seen.
Hence, after a certain temperature, the enzymes involved in cellular respiration don't function as their structure changes.
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How can antibiotic resistance be minimized?
Explanation:
There are many ways that drug-resistant infections can be prevented: immunization, safe food preparation, handwashing, and using antibiotics as directed and only when necessary. In addition, preventing infections also prevents the spread of resistant bacteria.
50 POINTS+ BRAINLIST
During the course of their work, healthcare professionals can be exposed to all kinds of germs. Three of these are viruses, bacteria, and fungi. Draw a Venn diagram that compares and contrasts these three pathogens. Give at least one example of diseases caused by each.
You don't actually need to draw a diagram, just give examples.
clearly is if the fungi get to u the first thing that gonna happn is you're going to get cancer and about bacteria stomach sickness diareah flu head ache and clearly its going to be hard for u to breath
4. There is a new viral disease in the human population. You found that the
isolated viral particles do not lyse human cells when cultured together. You
also found the virus contained a ssRNA genome and curiously, you found
the viral sequences in the host cell genome. What Class of virus do you
think you have? How would you confirm this?
Answer:
COVI-19
Explanation:
Please help! will mark brainlist!!!
Which object is hotter in terms of its kinetic energy: the cup of coffee or the iceberg? Explain the reason for your answer in terms of your understanding of the kinetic molecular theory of matter.
Answer:
red-hot iron bar
Explanation:
An iceberg could even contain more heat energy than a cup of coffee or a red-hot iron bar. That's because its bigger and contains so many more molecules, each of which has some heat energy. The coffee and the iron bar are hotter (have a higher temperature), but the iceberg holds more heat because it's bigger.
Two of the four main classes of organic compounds are proteins and nucleic acids. What is the relationship between proteins and nucleic acids?
Answer:
Proteins are important structural and functional biomolecules that are a major part of every cell in your body. There are 2 nucleic acids -- DNA and RNA. Your cells make proteins by following the instructions encoded in your DNA, which is genetic material and a type of nucleic acid.
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History of Present Problem:
Frank was driving home after a long day at work. It was late and he was having problems driving in the dark with so
much traffic. He was forced to take a detour and felt tired, so he took another sip of soda. "What would I do without
sugar and caffeine?" he mumbled to himself. Frank realized that he should probably stop the car as he noticed his hands
begin to shake, but he continued anyway. Rounding a corner, he realized that he was having trouble focusing on the
road. He tried to blink away the blurriness and shook his head, but things did not change. In an instant, the car slipped
off the road and hit a tree. "What was that?" exclaimed Frank to the night air. He quickly got out of the car and checked
himself out. Other than the shock of the accident, Frank seemed to be okay. He pulled out his cell phone and called his
wife, Stacey, to come pick him up. He then called to report the accident to the police and his insurance agent. His wife
arrived about an hour later and looked very concerned when she saw Frank sitting in the police car. "Why aren't you
going to the hospital?" screamed Stacey. "Were you drinking again?" "I'm fine, and no I wasn't drinking. Check with
Sergeant Eversman if you do not believe me. I lost focus; it has been a long day and my vision is a little off. This is too
much stress. Please, I just want to go home." The emergency staff checked him out and recommended he go to the
hospital for evaluation but Frank declined. They drove home, but Stacey continued to badger Frank about going to the
hospital.
Answer:
Frank might have been an alcoholic.
Explanation:
Because his wife,Stacey,asked him if he had been drinking and he also didnt want to go to the hospital for evaluation.
What is a qualitative observation?
Answer:
A qualitative observation involves the use of five sensory organs, sight, smell, taste, touch, and hearing, and their function to examine the attributes. Being subjective in nature, it focuses on the characteristics and qualities of the variables rather than the numerical value.
Explanation:
mark as a brainliest answer if it helps you
Answer:
A qualitative observation involves the use of five sensory organs , sight,smell ,taste,touch and hearing
Explanation:
A qualitative observation involves the use of five sensory organs, sight, smell, taste, touch, and hearing, and their function to examine the attributes. Being subjective in nature, it focuses on the characteristics and qualities of the variables rather than the numerical value. organs, sight, smell, taste, touch, and hearing, and their function to examine the attributes. Being subjective in nature, it focuses on the characteristics and qualities of the variables rather than the numerical value.
36. Which of the following statement is not true about the properties of an acid?
a. Taste sour
b. Turns litmus paper to blue
c. Reacts with metal
d. Corrodes fabric, skin, and paper
Answer:
c
Explanation:
Answer:
B
Explanation:
b)Acid turns litmus paper to red not blue
The tagging and labeling of evidence is an example of _____.
a protocol
a control
an evidence collector
a first responder
Answer:
a protocol
Explanation:
got it right on edge :)
PLEASE HELP WITH THIS ONE QUESTION
Answer:
perfect cube shape
Explanation:
the shape of a cell is perfectly cube- shape then its volume must be calculated with an equation:
Height×Width×number of sides and number of boxes
Surface= area of volume ratio is calculated with an equation
Area /volume
if a cell has large surface area to volume into ratio means it has greater exposure to the environment.It means that flow of nutrients and gases move freely in the small cell compared to large cell.
A 100-pound bag of fertilizer is marked 0-15-15. How many pounds of nitrogen,
available phosphate, and potassium are there in the bag?
Fertilizers are the chemical element for improvement of productivity of plants. Here, 0-15-15 shows nitrogen 70 pounds, phosphorous 15 pounds and potassium 15 pounds.
Why to label fertilizer?Labeling of fertilizer is to show the content of major nutrients. They are usually labeled with three numbers i.e., N-P-K label, i.e., Nitrogen-Phosphorous-potassium label , such as, 0-15-15. the first number is the percentage of nitrogen, second is for phosphorus and third is for potassium.
Thus, here as per the marking, the quantity of the nutrients are: nitrogen 70 pounds, phosphorous 15 pounds and potassium 15 pounds.
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. What could explain how these rocks got so far apart?
Answer:
What could explain how these rocks got so far apart? The United States and Portugal are parts of different plates. ... The United States and Portugal are parts of different plates. The plates slowly moved far apart as soft, solid rock from underneath got added to the edges of the plates over millions of years.
Explanation:
Need help ASAPbdbssnnsjsnsns
what is this pointing too
c- coarse adjustment knob
d- stage clip
Of these things is an environment which one is a living thing?
Air (wind)
Soil (clay)
Fungus (mushroom)
Water (river)
Answer:
What is Fungus (mushroom)
Explanation:
The living body of the fungus is a mycelium made out of a web of tiny filaments called hyphae. The mycelium is usually hidden in the soil, in wood, or another food source. A mycelium may fill a single ant, or cover many acres.
Air,water and soil may well be a place living things exist in, ecosystem, but they are in no way living.
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Fungus (mushroom) is the living thing in environment. Thus option C is correct.
What are the types of environment ?The surrounding of living organism including both the biotic and abiotic factors called as environment. It may be natural, social, or built environment.
Majority of the environment is composed up atmosphere, hydrosphere, lithosphere, and biosphere.
It can be up microenvironments which is the immediate local surroundings of an organism and secondly macro environments refers to biotic and abiotic factors.
Two common types of environment such as natural or geographical environment, and man-made environment.
Geographical environment include terrestrial environment independent of humankind. For example rivers, deserts, water, oceans.
Man-made environment refers to a social environment. It is completely dependent on human social influence.
For example, city infrastructures, houses, transport and communication etc.
Thus option C is correct.
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Which might be aAfter reading the passage about acupuncture, identify which statement supports the
claim that acupuncture relieves pain.
Answer:
The National Institutes of Health found it effective in reducing pain and other symptoms, but it is not clear how it works.Explanation:
What make Eukaryotic cells different from Prokaryotic Cells?
Group of answer choices
Eukaryotic cells have membrane bound organelles and more complex structure
Eukaryotic cells do not have a nucleus and are unicellular
Eukaryotic cells all have cell walls and include bacteria and plants
Eukaryotic cells are mainly bacteria
Answer:
Eukaryotic cells have a membrane bound organelles and more complex structure
Explanation:
Iwo atoms that are isotopes of one another must have the same number of what! protons O neutrons electrons all particles
Answer:
neutrons
Explanation:
Neutrons have no charge so it doesn't change the overall charge of the atom. Having a different number of protons or electrons would change the overall charge.
Hope this helps!
Atoms with full valence electron shells are chemically stable. Most noble gases have eight valence electrons. So, one model for chemical bonding is the octet rule. This states that atoms will _________ or __________ electrons in order to reach the more stable arrangement of eight electrons in their valence shells. A) lose, gain B) conduct, share C) transfer, share D) conduct, transfer
Answer:
A - Gain or Lose
Explanation:
Atoms with full valency electron shell are usually very stable. Most noble gases with full valency shell are usually very stable . The valency electron are fully occupied(8) for all noble gases this is what makes them hard to react with other element.
During chemical bonding elements strife to attain the octet rule. The octet rule is to have a full valency electron through bonding . When this atom bond they either transfer electron or share electrons.
The case of transferring electrons forms an ionic bonding. One atom gain electrons while the other lose electrons during ionic bonding. One atom form cation while the other forms anions.
For covalent bonding atoms are shared to attain the octet rule. This kind of bonding exist between a non metal and another non metals
Answer:
Explanation:A: gain or lose
please help just one question.
Answer: I think the answer is True
Erythrocytes live for a maximum of.......days whereas platelets live for ....... days
Answer:
[tex]120 \: days;10 \: days.[/tex]
Explanation:
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