How do invasive species travel?

1 answer:

azamat4 years ago

7 0

Hello!
Invasive species travel by human activities such as ships, small boats, and how goods travel to other countries.
Hope this helps!

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What is the starch indicator, and how does it change?

slamgirl [31]

Answer:

Starch is a indicator in the iodometric titration and it turns deep dark blue when iodine is present in a solution. The starch under warming condition forms amylose and amyl pectin's which combine with iodine to produce dark blue color. In absence of iodide ion starch indicator is colorless.

Explanation:

Starch is a viable indicator in the titration process because it turns deep dark blue when iodine is present in a solution. When starch is heated in water, decomposition occurs and beta-amylose is produced. Beta-amylose combines with iodine, resulting in a dark blue color change. The iodine-starch test is a chemical reaction that is used to test for the presence of starch or for iodine. The combination of starch and iodine is intensely "blue-black". The interaction between starch and triiodide is the basis for iodometry. In an iodometric titration, a starch solution is used as an indicator since it can absorb the I2 that is released. This absorption will cause the solution to change its color from deep blue to light yellow when titrated with standardized thiosulfate solution. This indicates the end point of the titration. Aside from their basic nutritional uses, starches are used in brewing and as thickening agents in baked goods and confections. Starch is used in paper manufacturing to increase the strength of paper and is also used in the surface sizing of paper. When starch is heated in water, various decomposition products are formed, among which is beta-amylose which forms a deep blue-black complex with iodine. The starch indicator solution must be freshly prepared since it will decompose and its sensitivity is decreased.

7 0

3 years ago

What is the result of homeostasis at the cellular level? *

Dominik [7]

B - The environment within the cell is stable.

Homeostasis is when your body works to maintain equilibrium (balance) so within a cell, the cell would be stable

3 0

3 years ago

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What is an organism's phenotype?

slamgirl [31]

B. The organisms physical traits.
A phenotype refers to all observable traits of an organisms as a result of its genotype.

3 0

3 years ago

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What is expressed when both alleles for a gene are equally expressed as in human blood type

alexandr402 [8]

As both the genes get equally expressed in the human blood group genes, both the proteins or characters expressed by those genes get prominent in the phenotype of the organism.

<h3><u>Explanation:</u></h3>

In case of human blood type, there are co dominance between the genes coding for A blood group and B blood group. Absence of both of them produce the O blood group and presence of both of them produce the AB blood group.

The gene for A blood group codes for enzyme α-1,3-N-acetylgalactosamine transferase which attaches the N Acetylgalactosamine to surface of RBCs which are actually the A antigens.

The gene for B blood group codes for α-1,3-galactosyl transferase which attaches galactose to surface of RBCs which are actually B antigens.

Presence of both of these genes make both N Acetylgalactosamine and galactose to be present on RBC membrane. This is why co dominance occurs in case of AB blood group persons.

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4 years ago

Can someone please help me I need MAJOR help so I have this science test that counts for 60% of my grade but I can't find any in

Vesnalui [34]

-It's E-Coli, but it's scientific name is what you said, "Diarrheagenic Escherichia Coli"

-Nausea, Vomiting, Stomach Cramps, Bloody Diarrhea (Ew, I know), Fever (101 F, 38.3 C), Malaise, Dehydration, Loss of appetite

-All age groups can be affected by E Coli, but the elderly and the young can be the most at risk

-Wash your food, keep it clean, keep raw meats away from other foods to avoid cross-contamination, do NOT defrost meat on table tops or counters

-Symptoms last 5-10 days, staying hydrated and staying rested helps you; Antidiarrheals should NOT be taken, but Antibiotics taken in portions, like Trimethoprim or Sulfamethoxazole are fine, although e-coli is known to go away on its own.

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3 years ago