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Stolb23 [73]
3 years ago
7

What is a Primary energy source

Biology
1 answer:
Temka [501]3 years ago
3 0

Answer:

Primary energy consists of unconverted or original fuel

Explanation:

for example, primary energy sources include petroleum, natural gas, coal, biomass, flowing water, wind, and solar radiation

Those are the fuels that can be mined, reaped, extracted, harvested, or harnessed directly

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A nurse is discussing the care of a patient with cancer with a nursing student. The patient is about to begin chemotherapy with
dalvyx [7]

Answer:

a."Alkylating agents are toxic to tissues that have rapidly dividing cells."

Explanation:

In the given example the patient is about to begin chemotherapy with a bifunctional alkylating agent.

when the two dna strands are cross linked they will not separate for dna replication which will halt the cell division process so rapidly dividing cells will stop dividing and die

Moreover,Chemotherapeutic agents, also known as antineoplastic agents, are used to prevent the growth of fast-growing cells, usually in the sense of malignancy, directly or indirectly.

Therefore, Chemotherapeutic agents are Alkylating agents that are toxic to tissues that have rapidly dividing cells

So, this statement by student indicates an understanding of his chemotherapeutic agent.

4 0
3 years ago
What part of the body to elephant tusks form from
Alexus [3.1K]
The elephants skull, I believe.
6 0
3 years ago
Read 2 more answers
An unknown bacterium produces colorless colonies when inoculated onto an EMB plate. Predict what you would see if you inoculated
marshall27 [118]

The EMB (Eosin Methylene Blue) agar is a selective and differential agar medium. It contains sucrose and lactose as fermentable substrates together with Eosin Y and methylene blue dyes which in combination gives the agar its characteristic color when prepared and serves as a pH indicator as well as an inhibitor of growth of Gram-positive bacteria. Hence, it is primarily used to isolate Gram-negative fecal coliforms while some positive fecal coliforms such as Staphylococci are also able to grow.

These coliforms are of two types:

  • Lactose or sucrose fermenting coliforms form metallic sheens on the agar as a result of acid production and the response of the indicator to the increased acidity.
  • Non-lactose/sucrose fermenters are only able to produce acid by protein deamination. Hence they either form colorless or pinkish colonies on the agar

On the other hand, Mannitol salt agar is a selective and differential agar medium that is primarily used to isolate Staphylococcal bacteria. The presence of sodium chloride in the medium makes it a partial or complete inhibitor of other bacteria.

Hence, an unknown bacterium that forms colorless colonies on EMB will either be a non-lactose fermenting, Gram-negative coliform that will hardly grow on Mannitol salt agar, or a Gram-positive fecal Staphylococcus.

Staphylococci bacteria are of two types:

  • Coagulase-positive will form yellow colonies on the Mannitol salt agar.
  • Coagulase-negative will form red colonies on the Mannitol salt agar.

More about isolating media can be found here: https://brainly.in/question/7238948

5 0
3 years ago
Why does population size of a species rise and fall around the carrying capacity, rather than immediately stop growing and flatt
salantis [7]

Answer:

soarce google

Explanation:

Competition for resources like food and space cause the growth rate to stop increasing, so the population levels off. This flat upper line on a growth curve is the carrying capacity. The carrying capacity (K) is the maximum population size that can be supported in a particular area without destroying the habitat.

4 0
3 years ago
What is the role of convention in plate tectonics?
Hunter-Best [27]

Answer:

read below

Explanation:

Convection currents in the magma drive plate tectonics. Heat generated from the radioactive decay of elements deep in the interior of the Earth creates magma (molten rock) in the aesthenosphere. The aesthenosphere (70 ~ 250 km) is part of the mantle, the middle sphere of the Earth that extends to 2900 km.

8 0
3 years ago
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