Choose all the answers that apply.Which of the following minerals can be scratched with a fingernail?

-talc
-diamond
-topaz
-quartz

Answers

Answer 1
Answer: Talc is the only mineral that can be scratched with a fingernail.
Answer 2
Answer: talc can be scratched by a fingernail

Related Questions

The jawed fish and all other vertebrates are gnathostomes, which means they have
When an object is burning, two atoms of oxygen (in the air) combine with one atom of carbon (from thesubstance burning). This forms carbon dioxide gas. Explain how the law of conservation of matter applies to this reaction. 2. A piece of wood is burned, and a small amount of ashes are formed. Explain why the original piece of wood and the resulting ashes will not weigh the same.
What is the final electron acceptor in aerobic respiration
A what is a threadlike structure made of dna and protein
What is gel-like fluid that fills most of the cell

This is a plastid with chlorophyll in plants that photosynthesize.

Answers

Answer:

Chloroplast

Explanation:

Chloroplasts are organelles, small organs of plant cells, and other organisms capable of photosynthesis, such as algae.

They are green in color because of the presence of chlorophyll. It is in chloroplasts that the chemical reactions of photosynthesis occur.

In addition, these structures have DNA, RNA and ribosomes, so they can multiply and synthesize proteins naturally.

Final answer:

A chloroplast is a type of plastid in plants that contains chlorophyll for photosynthesis. This process uses sunlight, carbon dioxide, and water to produce glucose and oxygen. The chlorophyll appears green because it absorbs blue and red wavelengths of light but reflects green.

Explanation:

The plastid with chlorophyll in plants that photosynthesize is called a chloroplast. Chloroplasts are plant cell organelles that contain a green pigment called chlorophyll, which captures the energy of sunlight for photosynthesis. This process involves a series of reactions that use carbon dioxide, water, and light energy to make glucose and oxygen.

Photosynthetic eukaryotes, including plants and some protists, possess these chloroplasts. However, some bacteria also perform photosynthesis, but their chlorophyll is not located in chloroplasts but instead, within the cell itself.

All photosynthetic organisms contain a pigment called chlorophyll a, which humans perceive as green. This is because it absorbs wavelengths from either end of the visible spectrum (blue and red), but not green, which is reflected, making chlorophyll appear green.

Learn more about chloroplasts here:

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What organelle controls a cells packaging storage and shipping fuctions?a,[ER]
b,ribosomes
c.Goigi apparatus
d,vesicles

Answers

C) Golgi Apparatus control a cells packaging, storage, and shipping functions.

which of the following is the correct sequence of the zones in the primary growth of a root, moving from the root cap inward?

Answers

The correct answer for the question that is being presented above is this one: "zone of cell division, zone of elongation, zone of differentiation." This is the correct sequence of the zones in the primary growth of a root, moving from the root cap inward.

The organ that produces the egg cell in the life cycle of the pine is called the____? A.Ovules B.Antheridia C.Archegonium

Answers

The organ that produces the egg cell in the life cycle of the pine is called the ovules.

SOS:

The answer is Archegonium

Hope this helps!

Why do we get diarrhea ?

Answers

unset stomach its bad
 
u get when eat something bad that when it does not agree with ur stomach

Why are plasmids so widely used in recombinant DNA studies?A. because they naturally contain much foreign DNA
B. because they can be used to transform bacteria
C. because it is difficult to insert new genes into them
D. because they cannot be cut with restriction enzymes

Answers

Answer:

Option (B).

Explanation:

Plamids are the extra chromsomal circular DNA present in the bacterias. Plasmid DNA can undergo replication independently to the chromsomal DNA.

Plamids can be used to transform bacteria and used in the molecular techniques. The foreign gene can easily be inserted into the plasmid DNA and used in the formation of recombinant protein.

Thus, the correct answer is option (B).

I would guess is B
A: the bacteria contains its DNA
B; when a new gene is added it can transform the bacteria by altering its biochemistry
C:its easy to insert new genes into a plasmid
D: the plasmid is cut with special enzymes

hope that helps