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worty [1.4K]
3 years ago
10

What evidence must be considered when determining whether or not a trait is an adaptation

Biology
1 answer:
Rashid [163]3 years ago
4 0

Answer:

An adaptation can be viewed as a trait that emerged and developed for a certain condition so as to increases the organism changes of survival or fitness.

For a trait to be called adaptive, it must have had a positive influence but not majorly a trait that develops in reaction to a certain selection pressure.

Categorically, a trait is seen as adaptation if it is the aftermath of selection, and adaptive if it is of favourable influence at the existing time.

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How does the cell membrane help to maintain homeostasis?
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Cellular homeostasis involves maintaining a balance of several factors that make a cell healthy. The cell membrane is a lipid bilayer that prevents that passage of water and ions. This allows cells to maintain a higher concentration of sodium ions out the outside of the cell.

Explanation:

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A cell is placed in a water solution with the same salt concentration as the cell. The cell is placed in a _____.
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Isotonic solution. Hypotonic is less salt concentration and hypertonic is more
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What is an Obligate anaerobe? How do obligate anaerobes, like the bacteria C. Botulinum, get energy ?
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Answer:

See the answer below

Explanation:

<em>Obligate anaerobes are microbes that can only survive in oxygen-deficient environments. They are killed by the normal atmospheric level of oxygen and will only thrive in environments whose oxygen levels are lower than that of normal atmospheric level. </em>

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8 0
3 years ago
How can the rate of a reaction be increased?
xz_007 [3.2K]

HI there!

This Answer Can Easily Be Found By Analyzing What Increases the reaction rate.Several factors can increase the rate of a chemical reaction. In general, anything that increases the number of collisions between particles will increase the reaction rate, and anything that decreases the number of collisions between particles will decrease the chemical reaction rate.

INCREASE THE CONCENTRATION OF THE REACTANTS

A higher concentration of reactants leads to more collisions per unit time and leads to an increasing reaction rate.

INCREASE THE PRESSURE OF GASEOUS REACTANTS

Changing the pressure of gaseous reactants is, in effect, changing their concentration. The increased number of collisions caused by a higher pressure generally increases the reaction rate.

DECREASE THE PARTICLE SIZE OF SOLID REACTANTS

Reaction depends on collisions. If a reactant is a solid, grinding it into smaller particles will increase the surface area. The more surface area on which collisions can occur, the faster the reaction.

INCREASE THE TEMPERATURE  

Usually, an increase in temperature causes an increase in the reaction rate. A higher temperature means that the molecules have a higher average kinetic energy and more collisions per unit time. It also increases the number of collisions that have enough energy to cause a reaction to take place.

CHANGE THE SOLVENT

The rate of a chemical reaction depends on the medium in which the reaction occurs. The reaction may go faster in an aqueous solution than in an organic solvent or in a more polar solvent.

ADD A CATALYST

Catalysts lower the activation energy of a chemical reaction and increase the rate of a chemical reaction without being consumed in the process. They do this by an alternative mechanism that has a lower activation energy.

Analyzing the answers Given from A-C These answer have something to do with Decreasing. By decreasing The Temperature,Amount of reactants, And having less surface area will only Decrease our reaction rate.

Having this In mind, <u>Our Correct answer is D</u>

Hope this has Helped

-Adan


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Uno no puede ir por la vida viviendo sin sentir, eso con El Paso del tiempo se premia a lo grande y podrás seguir construyendo a tus proyector y con mas fuerza
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