The bacterium Bacillus anthracis, which causes anthrax, has been developed as a biological warfare agent. Which one of its following abilities could have led to this? A.its ability to undergo reproduction inthe absence of energy sources B.its ability to form endospores in harsh conditions C.its abilty to grow rapily in harsh conditions

QUESTION POSTED AT 18/01/2020 - 04:59 AM

Answered by admin AT 18/01/2020 - 04:59 AM

Answer:

The correct answer is the option B. its ability to form endospores in harsh conditions .

Explanation:

Bacillus Anthracis is the bacteria that cause anthrax in animals and human. Bacillus anthracis is a gram-positive spore-forming bacteria. Bacillus anthracis is commonly found in the soil of grazing areas.

It is a warfare agent that can sicken or kill people, crops or livestock. Anthrax has been developed as warfare agents because:

Anthrax spores are easier to found in nature, can be produced in a lab or harsh conditions, and can stay for a long time in the environment.

Anthrax makes a greater weapon because it can be released easily and quietly. The spores could be put into water, food, spray or powder.

Anthrax has been used as a weapon before.

Thus, the correct answer is option B.

Post your answer

Related questions

When does water lose and gain energy

Water gains energy when it is evaporating
Water loses energy when it is freezing

ANSWERED AT 17/02/2020 - 09:52 AM


QUESTION POSTED AT 17/02/2020 - 09:52 AM

I need help with five multiple choice marine science questions. 1)When severe weather damages the plant life in an ecosystem, what effects might this have on other organisms in the same ecosystem? a)- Other organisms could starve or have to leave the area if they depend on the plants as food. b) -Other organisms could change their behavior to take the place of the plants in the ecosystem. c )-Other organisms would not be affected. d )-Other organisms could replace the plant energy with radiant energy from the sun. 2)As the climate changes, the average ocean temperature is rising. Using this information, predict what will most likely happen to El Niño events in the future. a)-El Niño events will intensify because they rely on warmer water sinking to the seafloor. b)-El Niño events will intensify because they will build on the already warm waters at the equator. c)-Some El Niño events will be stronger, but most will be weaker because the ocean currents are unpredictable. d)-El Niño events will become more similar to La Niña events and establish a new weather pattern. 3)Which of the following examples is the most likely way severe weather can negatively affect the biodiversity of a marine ecosystem? a)-A severe thunderstorm brings rain and wind to an intertidal zone. b)-A storm surge from a hurricane floods a coastal area. c)-A tornado causes a waterspout. d)-A blizzard adds snow and ice to an arctic glacier. 4)El Niño events are characterized by warmer than normal ocean temperatures near the equator in the Pacific Ocean. Which weather events are most likely to occur as a result? a)- Increased rainfall across the eastern Pacific Ocean b)-Decreased flooding across the eastern Pacific Ocean c)-Drought along the South American Pacific coastline d)-Colder winter along the South American Pacific coastline 5)According to the Severe Weather Activity worksheet, El Niño events most likely occurred during which of the following years? a)-2006 and 2015 b)-1997, 2006, and 2015 c)-1997 and 2015 d)-1997 and 2006

1. The answer is A. The eradication of plants in an ecosystem would devastate the food web in the habitat. This is because plants are primary producers and significant as conduits of energy into a food web. Plants convert radiant energy from the sun to biomass through photosynthesis. This energy then transferred up the food chain through various form of interaction such as predation.

2. The answer is B. Global warming causes water at the equator to be even warmer above normal temperatures. This fans the upwelling of cold water from below the ocean floor and causes an even greater disparity of temperatures across the Pacific ocean. This subsequently fans the trade winds hence warming the air even more and causing severe storms.

3. The answer is B. The flooding of the coastal area due to hurricanes destroys the biodiversity of the ecosystem by physically destroying the habitat and by drowning organisms such as affecting a whole species population. This upsets the balance of the ecosystem and makes it prone to even further deterioration.

4. The answer is A. When the surface ocean waters at the Pacific ocean warm at the equator, there is an upwelling of cooler ocean waters from the bottom of the ocean., The warm currents along with trade move towards the east and met the South American coastline where they bring in heavy rainfall. Conversely, the northwestern region of the Pacific experiences drought.

5. The answer is C. Elnino and La Nina occurs at a frequency of approximately two(2) to seven (7) years. The phenomenon usually lasts nine (9) to twelve (12) months. El Ninos are more frequent than La Ninas. Their peak effect is usually felt around December and January. The strongest El Nino was the one that occurred in 1997.

ANSWERED AT 16/02/2020 - 07:04 PM


QUESTION POSTED AT 16/02/2020 - 07:04 PM

What forms whenever a large body of air over land or water does not move for a long period of time?

The answer for this one is Air Mass.

ANSWERED AT 16/02/2020 - 06:58 PM


QUESTION POSTED AT 16/02/2020 - 06:58 PM

Use the Law of Syllogism to draw a conclusion from the two given statements. If you exercise regularly, then you have a healthy body. If you have a healthy body, then you have more energy. You have more energy. If you do not have more energy, then you do not exercise regularly. If you exercise regularly, then you have more energy. You have a healthy body. ...?

The correct answer for this question would be the third option. Using the Law of Syllogism, the conclusion that can be drawn from the two given statements is that, if you exercise regularly, then you have more energy. The use of syllogism is the kind of reasoning wherein a conclusion is being drawn from two given propositions. Hope this answer helps.

ANSWERED AT 16/02/2020 - 06:42 PM


QUESTION POSTED AT 16/02/2020 - 06:42 PM

Some biology students wanted to determine whether a pair of brown mice purchased at a pet store was homozygous dominant or heterozygous for fur color. They let the mice mate and examined the offspring. Six mice were born. All six had brown fur. Some of the students felt that this was enough evidence to prove that the mice were homozygous for brown fur color. Other students did not, so another experiment was planned. Describe the next experiment the students could conduct to determine whether the parent mice are homozygous brown or heterozygous. Explain your answer. ...?

Mark me brainiest answer is b

How does natural selection change the frequency of genes or traits over many generations? Biology students conducted an experiment mimicking genetic variation and coloration. Students used different colored beans to represent animals that might be prey: mice, for example. A student in each group was the predator: a hawk. Beans (mice) were randomly scattered on multicolored floor tiles, each color within four tiles. The hawk collected mice (beans) for 10 seconds. Mice not eaten reproduced. Three generations of data a shown in the table.

 Speckled and striped beans (mice) had the best survival rates. Why?

A) They reproduced very rapidly.  

B) Coloration was a form of camouflage.  

C) They mimicked other mice and were spared.  

D) The speckled and striped beans had a wider range.  

ANSWERED AT 16/02/2020 - 06:37 PM


QUESTION POSTED AT 16/02/2020 - 06:37 PM

What kind of energy do all nonmoving objects?

The kind of energy that all nonmoving objects have is potential energy. Unless a force is acted onto the object, it will continue to be still because of the position it is in.

ANSWERED AT 16/02/2020 - 05:58 PM


QUESTION POSTED AT 16/02/2020 - 05:58 PM

As the fruit develops, why do the petals, stamen, and sepals fall off?

Answer:

Petals, stamen, and sepals fall off because they are no longer needed by the plant.

Explanation:

Petals, stamen, and sepals are closely related to plant reproduction. Petals protect the reproductory parts of the plant and because the fruit needs to be funded by pollen they no longer need reproductive parts, they have achieved it and now are in the development stage to mature and provide seeds and create more plants. Stamen and sepals are the reproductory parts of the plant and they are no longer needed o achieve reproduction

ANSWERED AT 16/02/2020 - 04:34 PM


QUESTION POSTED AT 16/02/2020 - 04:34 PM

The presence of more than two alternative forms of a given gene would be called ________.

It is called diploid

ANSWERED AT 16/02/2020 - 04:26 PM


QUESTION POSTED AT 16/02/2020 - 04:26 PM

A group of hikers find a fallen tree in a forest. The dead tree trunk is covered by mushrooms and other fungus. Later, they find a wild apple tree with many apples lying on the forest floor beneath the tree. The apples are all rotten and decayed by bacteria. Which statement BEST summarizes how these fungus and bacteria organisms are obtaining their food energy? A) The fungus and bacteria are both parasitic organisms that obtain food from other living organisms. B) The fungus and bacteria are both obtaining their energy by manufacturing food from minerals and sunlight. C) Both fungus and bacteria require well-fertilized soil in which to obtain nutrients needed for chemosynthesis. D) The fungus and bacteria organisms are obtaining the energy they need by decomposing organic matter like dead trees and old apples. Eliminate

Answer: D. The fungus and bacteria organisms are obtaining the energy they need by decomposing organic matter like dead trees and old apples.

Fungi is the primary decomposer of biological waste in forest ecosystem. Fungi grows on the branching network of hyphae which provide it more penetration potential towards the litter. Wood decaying fungi has enzymes required for decomposition of lignin, a chemical substance found in wood. Fungi decompose organic matter by releasing enzymes which breaks down the decaying matter, after that they absorb the nutrients in the decaying material. The left residue in the organic matter includes sugars and amino acids are degraded and decomposed by the bacteria.

ANSWERED AT 16/02/2020 - 04:05 PM


QUESTION POSTED AT 16/02/2020 - 04:05 PM

Describe how bacteria do each of these life functions Locomotion, Get & use energy, Reproduction

Some bacteria have structural components called flagella or pili, which help it move around in fluid or stick to other objects, such as other cells. Bacteria either produce their own food or consume other cells for food, and they use it by converting it in their cellular organelles. Bacteria can either reproduce through asexual (budding, binary fissure) or sexual reproduction (plasmid loop transfer)

ANSWERED AT 16/02/2020 - 04:00 PM


QUESTION POSTED AT 16/02/2020 - 04:00 PM

Which two scientists worked together to develop a three-dimensional model of DNA?

James Watson, Francis Crick.

Developed the three dimensional model of the atom although there aids or assistance, Maurice Wilkins, and Rosalind Franklin And most forgotten Elizabeth Sheppard helped them gain the knowledge to make the atom model in the first place Elizabeth shoe gave them the motivation 


ANSWERED AT 16/02/2020 - 03:47 PM


QUESTION POSTED AT 16/02/2020 - 03:47 PM

What type of energy the kinetic and potential energy called

It's called Merchanical Energy

ANSWERED AT 16/02/2020 - 03:12 PM


QUESTION POSTED AT 16/02/2020 - 03:12 PM

In the photosynthesis chemical equation, does the radiant energy of the Sun act as a reactant or a product? Explain your answer

The radiant energy acts as a reactant. Without the radiant energy from the sun, photosynthesis won't be able to happen.

ANSWERED AT 16/02/2020 - 05:17 AM


QUESTION POSTED AT 16/02/2020 - 05:17 AM

Which soil would you expect to be better developed the soil on a hillside or on a valley floor

The soil on a hillside, bes cause is more humus

ANSWERED AT 16/02/2020 - 02:13 AM


QUESTION POSTED AT 16/02/2020 - 02:13 AM

A population that grows until it reaches its carrying capacity usually has the shape of what

The shape of an 'S'

Hope that helps

ANSWERED AT 16/02/2020 - 02:00 AM


QUESTION POSTED AT 16/02/2020 - 02:00 AM

Is a mixture of nuts, bolts, and washers a chemical reaction ? & Are pastries a form of chemical reaction ?

The nuts and bolts osmt a chemical reaction bc nothing is haveinfg a reaction but yes to pastries because as you put them in a oven the rise and turn golden which is a chemical reaction

ANSWERED AT 16/02/2020 - 01:53 AM


QUESTION POSTED AT 16/02/2020 - 01:53 AM

Two or more cell working together form this

Form An organism or a living thing

ANSWERED AT 16/02/2020 - 12:41 AM


QUESTION POSTED AT 16/02/2020 - 12:41 AM

How are humans formed

A human/baby is formed in the womb


ANSWERED AT 16/02/2020 - 12:39 AM


QUESTION POSTED AT 16/02/2020 - 12:39 AM

Why does the bottom of the food chain have the most energy

Because it is the most unhealthiest

ANSWERED AT 16/02/2020 - 12:38 AM


QUESTION POSTED AT 16/02/2020 - 12:38 AM

Which cell uses energy

All cells use energy

ANSWERED AT 16/02/2020 - 12:26 AM


QUESTION POSTED AT 16/02/2020 - 12:26 AM

What kind of energy do all cells need to survive

They need ATP to survive

ANSWERED AT 16/02/2020 - 12:15 AM


QUESTION POSTED AT 16/02/2020 - 12:15 AM

PLZZ HELP FASSSSST 1. Which of the following eyects would you expect if red blood cells were shaped like neurons? (1 point) They would not be able to move as easily through capillaries. They would more easily carry out gas exchange in the alveoli. They would not need to be transported through the body. They would become more eyective at picking up urea discarded by body cells. 2. Which of the following is not a function of the skeletal system? (1 point) supports the body works with other body systems to allow movement manufactures new blood cells sends signals to the brain 3. Which of the following body systems are involved in the first line of defense of the immune system against infection? (1 point) integumentary, digestive, respiratory nervous, circulatory, skeletal muscular, endocrine, urinary urinary, skeletal, integumentary 4. Which of the following sets of structures would be involved in ridding the body of unwanted urea? (1 point) sensory neuron, interneuron, spinal cord alveoli, atrium, cilia capillary, nephron, ureter brain, esophagus, small intestine 5. An infectious disease is a disease that (1 point) is caught because the weather turns cold. is caused by pathogens. can be spread only by bacteria. cannot be cured. 6. Which of the following statements is true regarding infectious agents? (1 point) Infectious agents are all too small to be seen without a microscope, and none can be classified as living. All infectious agents are living because they are all classified as microorganisms. Of all the infectious agents, only viruses are considered living because they actively inject their DNA or RNA into host cells. Viruses cannot be treated with antibiotics because they are not living organisms. 7. Which discovery in the 1800s led to the development of germ theory? (1 point) Vaccines could prevent a disease. Antibiotics exist that can be given to counteract an infection. Infection rates decline when health care professionals wash their hands in between seeing patients. Some diseases, such as cancer, are caused by chemical factors. 8. Follow a carbon atom in a piece of bread eaten by a boy. Which of the following describes a path that this atom could take? (1 point) mouth esophagus stomach large intestine blood body cell mouth esophagus stomach small intestine blood body cell mouth large intestine esophagus stomach blood body cell mouth esophagus small intestine stomach blood body cell 9. Which of the following sets of structures is innervated by the somatic nervous system? (1 point) esophagus, stomach, small intestine atrium, ventricle, arteries biceps, triceps, quadriceps diaphragm, bladder, large intestine 10. Which of the following cell types would you expect to increase in number azer a person becomes infected with a pathogen? (1 point) sensory neurons white blood cells epidermal cells red blood cells

I got the first 3 the answers are A,D, and C good luck with the rest

ANSWERED AT 16/02/2020 - 12:10 AM


QUESTION POSTED AT 16/02/2020 - 12:10 AM

Pieces of rock and organic material pressed together form?

sedimentary rock      is the answer

ANSWERED AT 16/02/2020 - 12:03 AM


QUESTION POSTED AT 16/02/2020 - 12:03 AM

What is the main agent of erosion that has shaped much of earth's surface?

The major agent responsible for erosion on the Earth's surface is water. Flowing water as a result of rain, melting glaciers, moving streams and rivers erodes surfaces by displacing bits of soil and rocks, which is then moved from its original location to another.

ANSWERED AT 15/02/2020 - 11:50 PM


QUESTION POSTED AT 15/02/2020 - 11:50 PM

What conditions are necessary to insure fossilization?

The break down of organic matter. 
And the organism has to be buried. 

ANSWERED AT 15/02/2020 - 11:40 PM


QUESTION POSTED AT 15/02/2020 - 11:40 PM