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Fudgin [204]
3 years ago
12

At sea level a kilgogram weighs approximately ?

Biology
2 answers:
inysia [295]3 years ago
4 0

It weighs approximately 2 pounds. The weight doesn't change until you leave the atmosphere; it just measures the effect of gravity on your body.  

Elena-2011 [213]3 years ago
4 0

It weights about 2 pounds.

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Match the staining techniques with their purpose.
Dennis_Churaev [7]

A Negative stain such as India ink or Congo red-Look for the presence of a capsule.

This stain method is usually used to stain the area around the microorganism.

B The Gram stain-Divide bacteria into two groups based on cell wall structure (thick vs. thin).  

This is type of differential staining used to distinguish organisms based on their staining properties. Gram + and Gram- bacteria stain different because of different cell wall structure.

C The Ziehl-Neelsen Acid-fast stain- Identify bacteria with waxy cell walls such as: Mycobacterium tuberculosis (the cause of TB).  

This is also differential staining method which uses heat and phenol to derive dye into the cells with lipid-rich walls.

D Simple stain with a basic dye-Stain microbes a bright color to make it easier to see them in bright field microscopy.

One dye is used in simple staining in order to determinate the size, shape and arrangement of the cells.

E The Schaeffer-Fulton Endospore stain-Identify Bacillus or Clostridium species, such as the causative agents of anthrax, botulism, tetanus and gangrene.  

This is a special type of staining only used for the bacteria that can form endospores. Bacteria are first treated with heat and then with malachite green, which is very strong stain that can penetrate endospores.

5 0
3 years ago
What measure is used to determine a star's absolute magnitude?
Elanso [62]

Answer:

A you use apparent magnitude to find the absolute magnitude

5 0
2 years ago
What would be the advantage(s) to having no chloroplasts in the cells of the spongy mesophyll?
Gwar [14]
Well, first off the spongy mesophyll does have some chloroplasts, however they are located quite far from the surface of the leaf where most of the chloroplasts are. Therefore they don't get much light and don't contribute a lot to photosynthesis in the leaf. So why should the leaf waste the energy in making chloroplasts if there is not enough light to make them all efficient enough at photosynthesis?
8 0
3 years ago
bacteria communicates and exchange genetic information through extensions of their cell walls called​
Inessa05 [86]

Answer:

Conjugative Pili

Explanation:

Conjugative Pilli:allows for the transfer of DNA between bacteria, in the process of bacterial conjugation.

7 0
3 years ago
What does the small intestine do in the digestive system?
Montano1993 [528]
<span>is absorption of nutrients and minerals from food.</span>
7 0
3 years ago
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