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Contact [7]
2 years ago
13

which statements are true of heterogeneous mixtures? 1) they settle out. 2) the proportions of solute to solvent may vary. 3) th

e solute is evenly distributed throughout. 4) they are composed of two solvents and two solutes. a.1 and 2 b.2 and 4 c.3 only d.2 only
Biology
2 answers:
bixtya [17]2 years ago
8 0

Answer is A just took the test

Sindrei [870]2 years ago
5 0
The statements that are true of heterogeneous mixtures are: they settle out and the proportions of solute to solvent may vary. The correct answer is option A. 1 and 2. Heterogeneous mixtures are considered mixtures wherein the components are not uniform and still retain their properties. Characteristics of heterogeneous mixtures are: the ratio of solute and solvent is not equal, the substances can be separated physically and they still retain their properties even if mixed with another substance. 
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Which microscope would be used to observe surface structure of corona virus?
ElenaW [278]

Answer:

SEM ANSWER

Explanation:

Electron microscopy is a powerful tool in the field of microbiology. It has played a key role in the rapid diagnosis of viruses in patient samples and has contributed significantly to the clarification of virus structure and function, helping to guide the public health response to emerging viral infections. In the present study, we used scanning electron microscopy (SEM) to study the infectious cycle of SARS-CoV-2 in Vero E6 cells and we controlled some key findings by classical transmission electronic microscopy (TEM). The replication cycle of the virus was followed from 1 to 36 h post-infection. Our results revealed that SARS-CoV-2 infected the cells through membrane fusion. Particles are formed in the peri-nuclear region from a budding of the endoplasmic reticulum-Golgi apparatus complex into morphogenesis matrix vesicae. New SARS-CoV-2 particles were expelled from the cells, through cell lysis or by fusion of virus containing vacuoles with the cell plasma membrane. Overall, this cycle is highly comparable to that of SARS-CoV. By providing a detailed and complete SARS-CoV-2 infectious cycle, SEM proves to be a very rapid and efficient tool compared to classical TEM.

4 0
2 years ago
Mushrooms with gills, typically available in supermarkets, have meiotically produced spores located in or on _________ and belon
GarryVolchara [31]

Answer:

Mushrooms with gills, typically available in supermarkets, have meiotically produced spores located in or on BASIDIA and belong to the phylum BASIDIOMYCOTA.

Explanation:

Mushrooms are fruiting bodies of certain fungi that belongs yo the phylum BASIDIOMYCOTA. They are incapable of producing their own foods( because of lack of chlorophyl) therefore are saprophytic in nature. It derives its nutrients for growth from metabolizing non living organic matter.The structure that you normally see above the ground is the part of the mushroom that is producing and dispersing spores which is located at the BASIDIA.

Mushroom are used for different purposes:

- the edible species are useful in cooking since it provides vitamin D to the diet.

- it's extracts can be used for medical purposes.

8 0
2 years ago
If a researcher electrically stimulates the _____ in an animal, the animal will immediately wake up and be alert.
jeka94
If a researcher electrically stimulates the reticular formation in an animal, the animal will immediately wake up and be alert. Its purpose is to have some control of sensory signals and thus has the ability to alert the body when it is tired or needs to be awake.
6 0
3 years ago
Which of these Earth spheres interacts with coral reefs to cause coral bleaching?
Svetllana [295]

Answer:

you need to attach a photo.

Explanation:

5 0
2 years ago
What are the levels of organization in biotic factors?
Nuetrik [128]

Nivel subatómico: lo integran las partículas más pequeñas de la materia, como son los protones, los neutrones y los electrones.

Nivel atómico: lo componen los átomos, que son la parte más pequeña de un elemento químico que puede intervenir en una reacción.

Nivel molecular: está formado por las moléculas, que se definen como unidades materiales formadas por la unión, mediante enlaces químicos, de dos o más átomos, como por ejemplo una molécula de oxígeno (O2) o de carbonato cálcico (CaCO3).

Espero te sirva

7 0
2 years ago
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