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2 years ago

Which of the following are considered oxidase-negative?

Biology

1 answer:

quester [9]2 years ago

5 0

Answer:

Bacteria that are oxidase-negative may be anaerobic, aerobic, or facultative; the oxidase negative result just means that these organisms do not have the cytochrome c oxidase that oxidizes the test reagent. They may respire using other oxidases in electron transport.)

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Compare primary and secondary succession

Llana [10]

Answer:

primary succession occurs following an opening of a pristine habitat. and secondary succession is a response to a disturbance.

Explanation:

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3 years ago

Invasive species can impact ecosystems by...

balu736 [363]

Answer:

D: All of these

Explanation:

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3 years ago

Read 2 more answers

is the effort to understand the natural world and how the natural world works. uses ______________________ as the basis of under

guajiro [1.7K]

Answer:

I believe the answer to this question is b observable physical evidence.

Explanation:

The reason for this is because scientists make predictions and use evidence to back up their hypothesis. If the evidence doesn't support their claim, they make up a new one, until they have gathered enough evidence to support their claim. This can be done through past knowledge, like failures and successes and lab experiments, so it is not only each of them, so the answer cannot be c or d. Out of the two options, a and b, I just thought about it and picked b as the reasonable answer. Please give me feedback on the answer, if it is right or not. Thanks! Hope I helped!

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3 years ago

Different microbes grow in a wide variety of environmental conditions; however, most have preferences for certain temperatures,

lesya692 [45]

Answer:

this is a TRUE statement.

Explanation:

Different microbes grow in a wide variety of environmental conditions; however, most have preferences for certain temperatures, pH, and atmospheric gases because although microbes are widespread in their occurrence,they are found almost everywhere,in the air,water,soil,food,decaying matter,oil deposits,in plants etc.

but their number and their types vary according to the locality and environmental conditions.

Although, some microbes are always present and contribute towards natural flora BUT besides this others are present in specific environments such as some in hot springs bearing very HIGH TEMPERATURE RANGES for example: Thermus aquaticus.

some of them inhabit the acidic or alkaline soil feeding on HUMUS.

Most of the microbes prefer ATMOSPHERIC GASES i.e some require oxygen for their survival .For example: Pseudomonas.

some don't require O2 for survival i.e Spirochete.

IN SHORT, most of the microbes have preferences for various environmental conditions.

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3 years ago

Why can't proteins and starch enter the cell?

SVETLANKA909090 [29]

Answer:

This is because the cell membrane is a partially permeable membrane, hence allowing the smaller molecules to enter it and larger molecules to be out. For example, protein is too large to enter the cell

Explanation:

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3 years ago