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agasfer [191]
3 years ago
7

A mineral must be which of the following? select all that apply

Biology
2 answers:
Natali [406]3 years ago
6 0
All in all minerals must be 

1.naturally occuring
2. inorganic
3. solid
4.<span>definite chemical composition
5.</span><span>ordered internal structure

Your answer is A</span>
slava [35]3 years ago
3 0
Solid, Crystalline, Homoeneous...

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Please answer fast I'll mark brainliest
Leni [432]

Answer:

anther: produces pollen

ovule: contains egg cells

sepal: protects the flower bud

petal: surrounds the reproductive structures

Explanation:

6 0
3 years ago
What protects the stomach from acidic gastric juices
mihalych1998 [28]

This might help,the presence of hydrochloric acid creates an acidic environment within the stomach that is needed to convert pepsinogen to pepsin. Mucus that is produced by the epithelial cells of the stomach help protect the lining of the stomach from the corrosive hydrochloric acid and pepsin.

6 0
3 years ago
Read 2 more answers
What is the transamination reaction? What is the cofactor required for the transamination reaction?
brilliants [131]

Answer:

Transamination reaction:

Transmaination reaction may be defined as a type of chemical reaction that involves the transfer of an amino group to the another keto acid fort the formation of new amino acid. The non essential amino acid can be easily converted to essential amino acid by this transmination reaction.

This reaction is important for the important mteabolic pathways of the body. The cofactor required for the transamination reaction is pyridoxal-5'-phosphate. This cofactor also works as a derivative of vitamin B6. This cofactor is converted to pyridoxamine-5'-phosphate during the reaction.

6 0
3 years ago
2. The vasa recta is a specialized capillary that branches from the ___________ arteriole. The blood flow in the vasa recta runs
lorasvet [3.4K]
<h2>Vasa recta </h2>

Explanation:

The vasa recta is a specialized capillary that branches from the efferent arteriole; The blood flow in the vasa recta runs parallel, but in the opposite direction to the flow of tubular filtrate within the nephron loop

  • The vasa recta capillaries are long, hairpin-shaped blood vessels that run parallel to the loops of Henle
  • The hairpin turns slow the rate of blood flow, which helps maintain the osmotic gradient required for water reabsorption
  • Absorbed water is returned to the circulatory system via the vasa recta, which surrounds the tips of the loops of Henle
  • Because the blood flow through these capillaries is very slow, any solutes that are reabsorbed into the bloodstream have time to diffuse back into the interstitial fluid, which maintains the solute concentration gradient in the medulla; this passive process is known as counter-current exchange
3 0
3 years ago
When an LDL particle is taken up by the cell, what impact will this have on the regulation of de novo cholesterol synthesis?
Alexxx [7]

Answer:

C. HMG-CoA reductase will be dephosphorylated

Explanation:

When a low density lipoprotein particle is taken up by the cell, the impact it will have on the regulation of de novo cholesterol synthesis will be HMG-CoA reductase being dephosphorylated.

HMG-CoA( 3-hydroxy-3-methyl-glutaryl-CoA reductase) is an enzyme which aids the synthesis of lipids. When the lipids are produced and taken up by the cells then the effect of the synthesis stops to avoid excess synthesis and to allow for the action of enzymes which will act ok them in the cells . This is why it leads to a dephosphorylation of the enzyme which stops the action.

4 0
3 years ago
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