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3 years ago

Which is a type of irradiation used to prevent food-borne illnesses?

Biology

1 answer:

kirill [66]3 years ago

5 0

Answer:Gamma

Explanation: Gamma can be used to destroy different bacteria that causes food poisoning, it can also be used to preserve food and also serve as a prevention against spread of pests. irradiation can serve many purposes. Gamma radiation is used for treatment which include killing of bacteria and deinfestation of agricultural product. It is used to kill microorganisms on a variety of product, and it is ideal for many products. Irradiation is the process of exposing food to a very high source of energy. Gamma irradiation make use of high energy gamma rays that are emitted by radioactive cobalt 60 or Cesium 137.

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How do clastic sedimentary rocks form?

nalin [4]

Clastic sedimentary rocks are formed by fragments of rock that are squeezed and cemented together. Answer A

7 0

3 years ago

Read 2 more answers

The region of a Drosophila embryo with a low concentration of bicoid protein will develop into the _____. a) abdomenb) male flow

joja [24]

Answer:

The correct option is d) head.

Explanation:

Bicoid protein works as a transcription factor. It enters the nuclei of the embryos in early segmentation, where it activates the hunchback gene. In Drosophila, embryonic development begins at the time of fertilization. The sperm enters the mature oocyte through the micropile, a structure located in what will be the anterior region of the egg. Bicoid and hunchback mRNAs, protein products are critical for the formation of the head and thorax. Already in the early stages of oocyte development, certain mRNAs are located in specific regions of the oocyte: mRNA molecules encoding the Bicoid protein are preferentially located in the anterior region of the oocyte. Moderate levels of the bicoid protein are necessary to activate the formation of the thorax (i.e., the expression of the hunchback gene) but the formation of the head requires high concentrations of Bicoid, the promoters of a specific gap gene of the head must have sites of low affinity binding for Bicoid, so that this gene can be activated only in extremely high concentrations of Bicoid.

The lack of Bicoid protein affects the formation of the head and other structures in the anterior region of the oocyte.

6 0

3 years ago

Label all 18 phases of mitosis of an onion root cell

kupik [55]

Answer:

sorry wish I could help I just don't understand it ??

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3 years ago

You learn that a Mars lander has retrieved a bacterial sample from the polar ice caps. You obtain a sample of these bacteria and

Misha Larkins [42]

Answer:

a. conservative replication

b. semi conservative replication

c. dispersive replication

d. discontinuous replication

e. continuous replication

The CORRECT ANSWER IS C.

c. dispersive replication

Explanation:

The attached image shows a single band that becomes lighter (in volume) and increase in darker intensity (in times of color) is revealed with consecutive replications. The major pattern that would produce these outcome is dispersive replication.

Conservative replication do reveal two bands (a 14N for the wholly latest molecule, and a 15N for the totally antiquated molecule) after the initial replication. Therefore, this wholly wrong.

Semi-conservative replication reveal an individual band of transitional weight after the initial replication, followed by two bands following the second replication (one of transitional weight, and the other at the 14N position). These two bands is observed in each following replication, with the transitional weight becoming lighter in color as the 14N band is seen to appear darker in color.

The real pattern gives an individual band that pinpoints to all molecules in an individual replicative cycle possessing the same constituents.

Dispersive replication, has its molecules to be a blend of old (15N) and new (14N) strands. Each replication raises the ratio of new to old strands as it explains the reason an individual band is shown raised (lighter in weight) with every replication.

4 0

4 years ago

PLEASE HELP! what are environmental parameters that should be examined before building on land?

Serhud [2]

I would say that you would need to see what the environment around the area is. and what kinds of animals would be out of homes.<span />

5 0

3 years ago