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IgorLugansk [536]
3 years ago
7

1. How does a basic stain work? microbiology

Biology
2 answers:
LekaFEV [45]3 years ago
6 0

Answer:

In a simple stain, dyes that are either attracted by charge (a cationic dye such as methylene blue or crystal violet) or repelled by charge (an anionic dye such as eosin or India ink) are added to the smear. Cationic dyes bind the bacterial cells which can be easily observed against the bright background

Explanation:

SCORPION-xisa [38]3 years ago
4 0

Answer:

Explanation:

such as methylene blue, Gram safranin, or Gram crystal violet are useful for staining most bacteria. These stains will readily give up a hydroxide ion or accept a hydrogen ion, which leaves the stain positively charged.

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Why chlorophyll b is not found in alll eukaryotes
andrew-mc [135]

Answer:

All plants, algae, and cyanobacteria which photosynthesize contain chlorophyll "a". A second kind of chlorophyll is chlorophyll "b", which occurs only in "green algae" and in the plants.

8 0
2 years ago
At least two parallel channels of communication flow through each lateral geniculate nucleus. One runs through the _____________
Nezavi [6.7K]
At least two parallel channels of communication flow through each lateral geniculate nucleus. One runs through the parvocellular layers and a second runs through the magnocellular layers.
5 0
3 years ago
Jose and Fran MUST follow specific safety procedures when heating water with a Bunsen burner. The safety procedures include
8_murik_8 [283]
The following are some common procedures that we should take action of when using a bunsen burner to ensure our safety:

1. Wear safety goggles. Tie up long hair and school ties if needed. This can lower the risk of catching on fire. Put a heatproof mat underneath the Bunsen burner, put a tripod and the beaker of water for heating on top of the burner.

2. Close the air hole. Before we start up the burner, the air hole must be closed or green flame (striking back) may occur 

3. light up a match or a lighter. Put it over the chimney. 

4. Turn on the gas tap, you should be able to see a yellow flame now. Remove the lighter or match and open the air hole. We should have a blue flame by now. 

5. the water should start to heat up. Never touch the hot beaker with bare hands.

6. When the water is heated up to the temperature they wanted to, it's time to close the air hole and turn off the gas tap. 

7. If they need to move the hot beaker, use heat protection gloves 

These should be the correct procedures that they should follow in order to heat the water safely. 

Hope it helps!



4 0
3 years ago
Which of these activities increases the amount of carbon in the atmosphere?
TEA [102]

Answer:

B.

burning of fossil fuels

it increase the amount of carbon present in atmosphere.

4 0
3 years ago
Read 2 more answers
The thoracic cavity contains the ________. it is found ________ to the vertebral cavity. the thoracic cavity contains the ______
Leya [2.2K]

The given question is incorrect. The correct question is:

Question: The thoracic cavity contains the ________. it is found ________ to the vertebral cavity.

a) digestive viscera: inferior

b) kidneys and spleen: deep

c) stomach and liver: superficial

d) heart and lungs: anterior

Answer:

d) heart and lungs: anterior

Explanation:

The thoracic cavity is one of the major body cavities. The thoracic cavity is also called the chest cavity. It is formed by the ribs, the chest muscles, the sternum (breastbone), and the thoracic portion of the vertebral column. It is present in the anterior to the cavity formed by the spine to house the spinal cord. The pericardial cavity is the fluid-filled space of the thoracic cavity present around the heart. The thoracic cavity also has two pleural cavities to house the lungs.

6 0
3 years ago
Read 2 more answers
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