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slamgirl [31]
3 years ago
14

Test the streak of pyrite. What color is it?

Biology
2 answers:
Verdich [7]3 years ago
8 0

It’s green to dark grey ish

fact when it is rubbed on a streak plate the streak will be green to dark gray. Pyrite has a hardness of 6.5 on the Mohs hardness scale. Its cleavage is cubic or not distinct.

Hope this helps
Step2247 [10]3 years ago
5 0

Answer:

greenish black

Explanation:

Pyrite's hardness is 6-6.5. identifying minerals due to the fact that a mineral's streak never changes. Pyrite's streak is greenish black. Scratch: The scratch test is also another common way to identify minerals

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The first strong evidence for colinearity between a gene and its polypeptide product resulted from studies by:
ozzi

Answer:

The correct answer is option c, that is, Charles Yanofsky.

Explanation:

An American geneticist, Charles Yanofsky, worked as a faculty at Stanford University took part in the development of one gene-one enzyme hypothesis, and found attenuation, that is, a riboswitch mechanism.  

In the mechanism, the messenger RNA modifies its shape in response to a small molecule, and therefore, changes its binding capability for the regulatory region of an operon and a gene. His studies suggested that genes and proteins are co-linear. If the section of the intron in the gene gets mutated, then the protein generated by the protein also gets mutated.  

5 0
3 years ago
Compare photosynthesis to an everyday process
mixer [17]
Hello.

A detailed comparison between all of the above details of photosynthesis to the process or subject of your choice?For example if we are going to do cake we are going to need to get all the ingredients so we could start baking when we start mixing the ingredients the cake is almost ready to be baked. We then put it to a pan and put it in the oven to start to bake, And then we have cake. This is like the process of photosynthesis because photosynthesis takes in sun light and then converts oxygen to glucose. The Cake takes in its ingredients and then it gets bake and it gives us energy.

Have a nice day
7 0
3 years ago
a) unicellular prokaryotes that live in dust Archaebacteria_____ b) unicellular eukaryotes that live in pond water Archaebacteri
Advocard [28]

Answer:

The fill in the blanks are as follows:

a-unicellular prokaryotes that live in dust are Eubacteria.

b-unicellular eukaryotes that live in pond water are Protista.

c-multicellular eukaryotes that live all over the planet and consume food are Anamalia.

d-unicellular prokaryotes that live in volcanic ash and other inhospitable environments are Archaebacteria.

e-multicellular eukaryotes that have cell walls and are heterotrophic are Fungi.

f-multicellular eukaryotes that have cell walls and are autotrophic are Plantae.

Explanation:

By looking for the definitions of the different types of eukoaryotes and prokaryotes, the fill in the blanks are correctly completed.

3 0
3 years ago
Landform F is a headland. Describe the effect of waves on the headland and predict how it will change over time.
GaryK [48]

Given that Landform F is a headland.

The effect of waves on the headland – Energy from waves will be concentrated on the headland.

How the headland will change over time – The headland will erode and level out with the rest of the shore.

7 0
3 years ago
Read 2 more answers
The papillary layer of the dermis is composed of loosely packed connective tissue with numerous peg-like projections that provid
amid [387]

Answer:

The correct answer is option B) "The looseness allows for easy separation of the dead cell layer of epidermis to be shed".

Explanation:

The looseness of the surface are connecting the dermis to the epidermis provides several benefits, however allowing for easy separation of the dead cell layer of epidermis to be shed is not one of them. The dead cell layer of epidermis is located a the stratum corneum, which is the most superficial layer of the skin. The area that connects the dermis to the epidermis is deeper at the skin's anatomy, and is not related with the stratum corneum shedding.

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3 years ago
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