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sammy [17]
3 years ago
9

A microbiologist wants to study the virus particles from a urine sample, but not any bacteria that might be present. How can the

bacteria be eliminated without harming the viruses
Biology
1 answer:
ahrayia [7]3 years ago
8 0
D a chemostat using a low-nutrient medium
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Which experiment should be conducted as a field investigation? observing changes in the nesting behavior of wood ducks measuring
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Observing changes in the nesting behavior of wood ducks should be conducted as a field investigation.

Explanation:

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3 years ago
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Among the northern Andean countries strongly involved in the illegal coca and drug trade, __________ is now the predominant coca
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Among the northern Andean countries strongly involved in the illegal coca and drug trade, Columbia is now the predominant coca producer, so the answer would be option A.
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4 years ago
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When comparing the dermis with the subcutaneous tissue, the dermis and the subcutaneous layer do not contain collagen. contains
bazaltina [42]

The hypodermis (subcutaneous tissue) is the innermost layer of skin in your body. The dermis is the middle layer. The epidermis is the outermost layer.

<h3>What does the subcutaneous layer consist of?</h3>

Subcutaneous tissue is the deepest layer of your skin. It's made up mostly of fat cells and connective tissue. The majority of your body fat is stored here. The subcutaneous layer acts as a layer of insulation to protect your internal organs and muscles from shock and changes in temperature.

<h3>What is not found in dermis?</h3>

The answer is C fat cells. So the dermis is between the epidermis and the subcutaneous tissues.

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2 years ago
How could you investigate the idea that DNA is found only in living or once-living things?
Phoenix [80]

Answer: Cloning, dude just watch jurassic park

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3 years ago
Explain the phenomenon of photorespiration, including why it is thought to occur (evolutionarily speaking), and why plants have
liubo4ka [24]

Photorespiration limits casualty products of light reactions that build up in the absence of the Calvin cycle. In many plants, photorespiration is a problem because on a hot, dry day it can drain as much as 50% of the carbon fixed by the Calvin cycle.  The closing of stomata reduces access to CO2 and causes O2 to build up. These conditions favor a seemingly not useful process called photorespiration.  In most plants (C3 plants), initial fixation of CO2, via rubisco, forms a three-carbon compound.  In photorespiration, rubisco adds O2 instead of CO2 in the Calvin cycle. Photorespiration eats up O2 and organic fuel and releases CO2 without producing ATP or sugar. Photorespiration can evolve relic because rubisco first evolved at a time when the atmosphere had far less O2 and more CO2. 

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