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elixir [45]
3 years ago
5

You have isolated a gram-positive bacterium with low G C content from unpasteurized milk. It infected a pregnant woman, and now

you are worried that her child will be stillborn. What bacterium is it
Biology
2 answers:
mrs_skeptik [129]3 years ago
5 0

Answer:

<h2>A </h2>

Explanation:

1. Listeria monocytogenes : It is a gram-positive bacterium, is an ubiquitous, intracellular pathogen that can be found in moist environments, soil, water, decaying vegetation and animals, and it can survive and even grow under refrigeration.

2. Listeriosis caused by Listeria monocytogenes is a foodborne illness and cause various problems in the body.

3. Listeria monocytogenes is associated mostly with dairy products and it can cause stillbirth.

11111nata11111 [884]3 years ago
4 0

Answer:

Listeria monocytogenes

Explanation:

Listeria monocytogenes is a gram positive bacteria and it is pathogenic to humans. It has ability to grow at low temperatures it can survive in human food stuff even kept at zero degree Celsius. Its infection in pregnant woman causes meningitis in the developing child. It can also affect brain, spinal-cord and blood.

All these features fall in the line of features mentioned in the question and thus the bacteria will be Listeria monocytogenes.

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6 0
3 years ago
What is the relationship between working distance and field of view​
mel-nik [20]

Answer:

yeah

Explanation:

Field Of View (FOV): The Viewable area of the object under inspection. In other words, this is the portion of the object that fills the camera's sensor. Working Distance (WD): The distance from the front of the lens to the object under inspection. Resolution: The minimum feature size of the object under inspection.

4 0
3 years ago
Explain the respiratory system of a frog and the importance of "vacularization" of the skin and the mesentery
fredd [130]

 The skin is composed of thin membranous tissue that is quite permeable to water and contains a large network of blood vessels. The thin membranous skin is allows the respiratory gases to readily diffuse directly down their gradients between the blood vessels and the surroundings. When the frog is out of the water, mucus glands in the skin keep the frog moist, which helps absorb dissolved oxygen from the air.

A frog may also breathe much like a human, by taking air in through their nostrils and down into their lungs. The mechanism of taking air into the lungs is however sligthly different than in humans. Frogs do not have ribs nor a diaphragm, which in humans helps serve in expand the chest and thereby decreasing the pressure in the lungs allowing outside air to flow in.

In order to draw air into its mouth the frog lowers the floor of its mouth, which causes the throat to expand. Then the nostrils open allowing air to enter the enlarged mouth. The nostrils then close and the air in the mouth is forced into the lungs by contraction of the floor of the mouth. To elimate the carbon dioxide in the lungs the floor of the mouth moves down, drawing the air out of the lungs and into the mouth. Finally the nostrils are opened and the floor of the mouth moved up pushing the air out of the nostrils.

Frogs also have a respiratory surface on the lining of their mouth on which gas exchange takes place readily. While at rest, this process is their predominate form of breathing, only fills the lungs occasionally. This is because the lungs, which only adults have, are poorly developed.


6 0
3 years ago
Which of the following is an example of an ABAB design? Half of the subjects receive one treatment and the other half are not tr
Karolina [17]

Answer:

Option D, A subject is observed both before and after two exposures to the treatment.

Explanation:

In A-B-A-B design the alphabets have following meaning

a) First A – It is the baseline value or the value measured before treatment

b) First B – It is the treatment measurement

c) Second A  - It is the withdrawal of treatment  

d) Second B – It is the reintroduction of treatment  

The second A is known as the reversal phase in which the intervention is withdrawn to see if the target behavior returns to the baseline behaviour

Thus , there are two measurements involved one before the intervention and second after the intervention

Option D is correct

4 0
3 years ago
How does the energy move from organism to organism in the food chain (who eats who)?
NeTakaya

Answer:

predators consuming prey transfers the energy that the prey original received from plants which get their energy from the sun

4 0
2 years ago
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