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V125BC [204]
3 years ago
14

What is an open access journal?

Biology
1 answer:
Delicious77 [7]3 years ago
3 0

Answer:

Open access (OA) refers to free, unrestricted online access to research outputs such as journal articles and books. OA content is open to all, with no access fees. ... One involves publishing articles or books via the OA route on a publisher's platform (often referred to as gold open access).

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Many plants have a waxy cuticle to prevent them from losing water. This is made of
Lana71 [14]
The waxy cuticle is made of A.lipids

♡♡Hope I helped!!! :)♡♡
4 0
3 years ago
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While covering these advances, we have strengthened the narrative by expanding and clarifying discussions; carefully defining ne
nataly862011 [7]

Answer:

Transmission electron microscope (MET): allows sample observation in ultra-thin sections. A TEM directs the electron beam towards the object to be increased. A part of the electrons bounce or are absorbed by the object and others pass through it forming an enlarged image of the specimen. To use a TEM, the sample must be cut into thin layers, not larger than a couple thousand thousands of angstroms. A photographic plate or a fluorescent screen is placed behind the object to record the enlarged image. Transmission electron microscopes can increase an object up to a million times.

A scanning electron microscope creates an enlarged image of the surface of an object. It is not necessary to cut the object into layers to observe it with an SEM, but it can be placed in the microscope with very few preparations. The SEM scans the image surface point by point, unlike the TEM, which examines a large part of the sample each time. Its operation is based on traversing the sample with a very concentrated beam of electrons, similar to the scanning of an electron beam on a television screen. The electrons in the beam can disperse from the sample or cause secondary electrons to appear. Lost and secondary electrons are collected and counted by an electronic device located on the sides of the specimen. Each point read from the sample corresponds to a pixel on a television monitor. The higher the number of electrons counted by the device, the greater the brightness of the pixel on the screen. As the electron beam sweeps the sample, the entire image of it is presented on the monitor. Scanning electron microscopes can enlarge objects 200,000 times or more. This type of microscope is very useful because, unlike TEM or optical microscopes, it produces realistic three-dimensional images of the object's surface.

6 0
3 years ago
The frequency of a certain trait in a population of beetles will increase over time if -
Llana [10]

Answer:

eeee 2564 weee               za kss  kid

Explanation:

<ZJQBqzdbhbakzn

7 0
3 years ago
If a color-blind female wants to have children with a normal male, what is the probability one of their sons could be color blin
RSB [31]

Answer:

  • Mother´s genotype: X⁻ X⁻  
  • Father´s genotype: X⁺ Y
  • Son´s genotype: X⁻ Y
  • Daughter´s genotype: X⁺X⁻
  • The probability of having a color-blind son, X⁺Y, is 2/2 = 100%
  • The probability of having a color-blind daughter, X⁻X⁻,  is 0%
  • The probability of having a carrier daughter, X⁺X⁻, is 2/2 = 100%

Explanation:

Due to technical problems, you will find the complete explanation in the attached files

   

Download pdf
5 0
3 years ago
What would cause a plant to stop growing?
Anuta_ua [19.1K]

Answer:

b) lack of water

<em>Hope this helps!</em>

7 0
3 years ago
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