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3 years ago

Name two conditions that must be met for a reliable Gram staining result.

Biology

1 answer:

Hatshy [7]3 years ago

4 0

Answer:

The two important conditions that must be met before gram staining are-

1. The age of the culture should not exceed 24 hours.

2. Over heating, decolonization should be avoided.

Explanation:

Gram staining is a technique developed to distinguish the bacteria on the basis of the composition of the cell wall around the bacteria.

The gram stain is a sensitive technique so must be performed carefully. The precautions should be taken to avoid any error while gram staining that is-

1. Age of the culture- The culture should be freshly prepared just 18-24 hours before the experiment as above 24 hours bacteria lose their ability to retain the color so one would not be able to differentiate between the cultures.

2. While performing the experiment one should avoid overheating and decolorization with ethanol as both the factors lead to the loss of crystal violet stain from the cell and they take pinkish color after safranin staying.

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Glass plate which the specimen is placed on

scoundrel [369]

Its called a microscope slide

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3 years ago

1. Photosynthesis and cellular respiration are often described in two ways: (1) They are chemically opposite; and (2) They have

SVEN [57.7K]

Answer:

Photosynthesis and cellular respiration are chemically opposite. The reactants of photosynthesis are energy, carbon dioxide (6CO2), and water (6H2O). The products of cellular respiration are energy, carbon dioxide, and water. The products of photosynthesis are glucose (C6H12O6) and oxygen (6O2), and the reactants of cellular respiration are glucose (C6H12O6) and oxygen (6O2). So, the processes' equations are chemically opposite. The relationship between photosynthesis and cellular respiration is such that the products of one system are the reactants of the other. Without photosynthesis, cellular respiration couldn't take place, and without cellular respiration, photosynthesis couldn't take place. It's like a cycle.

Explanation:

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3 years ago

In an examination of a sample of muscle tissue, you might notice that the sample consists of striated cells with multiple nuclei

Elis [28]

Answer: SKELETAL MUSCLE

Explanation:

Skeletal muscles is a type of muscle tissue that forms those muscles that move the bones of the skeleton,straited because straitations (strips) can be seen on microscopic examination and involuntary as it is under conscious control.

Although most skeletal muscles move bones,they also accomodate a degree of voluntary control in breathing.

A lot of movements can be finely coordinated.example; writing but may also be controlled subconsciously, maintaining an upright position does not normally require thoughts unless a new locomotor skill is being learned example skating or cycling and the diaphram maintains breathing while asleep.

The fibre (cells) of the skeletal muscle are cylindrical,contain several nuclei and can be up to 35cm long.

Skeletal muscle contraction is stimulated by motor nerve impulses originating in the brain or spinal cord and ending in the neuromuscular junction.

The contraction of a whole skeletal muscle occurs because of coordinated contraction of it's individual fibres.

4 0

3 years ago

Question 3

LenKa [72]

Answer:

B is the correct answer.

A is incorrect because respiration is always occuring in animals and plants, therefore it means it does not require the presence of light. Photosynthesis does produce ATP, though.

Not C because photosynthesis does not occur in animals

Not D because they both are different processes. They don't really depend on each other, though they could occur at the same time.

7 0

3 years ago

Math the statement to the type of information it represents.

Alika [10]

1, fact.
2, reasoned judgement.
3, opinion.

4 0

2 years ago