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3 years ago

Can we drink too much water?

Biology

2 answers:

VashaNatasha [74]3 years ago

8 0

Answer:

anwer ☝️☝️☝️ please reply my answer

Dennis_Churaev [7]3 years ago

3 0

Answer:

Although uncommon, it's possible to drink too much water. When your kidneys can't excrete the excess water, the sodium content of your blood is diluted (hyponatremia) — which can be life-threatening.

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Use an example from nature to explain how natural selection causes populations to change as their environment change include the

ivanzaharov [21]

Answer:

Galapagos finches have various beak sizes that make foraging for food more successful.

Explanation:

Organisms evolve over time due to changes in their genome. These are pontaneous, and occur in DNA at random. These changes are called mutations and form alleles or different forms of a gene.

Over time within a population, the number alleles increase the variation of the population. These variants may confer specific traits within an individual, that may confer a biological advantage.

Thus, the trait may make the organisms more capable of obtaining food, shelter a mate etc. or ensure survival, i.e. they are able to pass on their genes to the next generation.

5 0

3 years ago

Corn smut and wheat rust are crop diseases caused by what what fungi

Hitman42 [59]

2. club fungi
explanation:

Corn smut is caused by Ustilago maydis while wheat rust is caused by Puccinia triticina. Both Ustilago maydis and Puccinia triticina are classified under division Basidiomycota. Basidiomycota is also called as club fungi. These fungi form specific club-shaped fruiting bodies called basidia. Basidia are the site for the formation of basidiospores.

6 0

3 years ago

Read 2 more answers

You have learned that having linear DNA has consequences, the major one being that the DNA is shortened every time it replicates

dimaraw [331]

Answer:

The sites of replication.

Explanation:

Linear DNA is and advantage for bigger organisms because there can be many places where replication can occur, otherwise, in circular DNA replication can only happen in he ORI place, that is unique. This feature allows to replicate several genes in the same amount of time being more efficient in protein synthesis.

4 0

4 years ago

Why does DNA need to replicate before cells divide?

gizmo_the_mogwai [7]

DNA needs to replicate before cells divide to give the complete set of genetic instructions to its daughter cells, (or ensures that each new cell inherits all of the genetic traits of the parent cell).

Hope this helps! :D

~PutarPotato

5 0

3 years ago

Correctly identify each of these definitions or examples as either depolarization or hyperpolarization of the plasma membrane. 1

natulia [17]

Answer:

hyperpolarization
depolarization
hyperpolarization
depolarization
hyperpolarization
depolarization
depolarization

Explanation:

The resting membrane potential is balanced by ion leakage and ion pumping, to get an electrical signal started the membrane potential has to lose its balance. This starts with a membrane channel opening for Na+ since Na+ concentration is higher outside the cell, ions will rush into the cell. This will change the relative voltage inside the cell. The resting potential has a voltage of -70 mV, the sodium cation entering the cell cause it to become less negative. This is known as depolarization.

The concentration gradient for Na+ will continue to enter the cell making the voltage to become positive reaching +30 mV. At the same time, this happens, other voltage-gated channels are also opening, a concentration gradient acts on K+, as well, as it leaves the cell, it takes a positive charge with it making the membrane potential to move back to its resting voltage of -70 mV. This is called repolarization.

For potassium ions to reach equilibrium the membrane voltage needs to be below -70 mV, this leads to a period of hyperpolarization that occurs while the K+ channels are open.

I annexed an image that illustrates this action potential process.

Considering the information given during depolarization there's an increase in the number of sodium leak channels (7) making the inside of the cell more positive (2) increase in the membrane potential (4), this also implies a decrease in the extracellular concentration of potassium (6)

Meanwhile, during hyperpolarization an increase in the extracellular concentration of potassium (3) decreases the membrane potential (1) making the inside of the cell more negative (5).

I hope you find this information useful and interesting! Good luck!

4 0

3 years ago