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den301095 [7]
3 years ago
10

In the mid-19th century, symptoms of fatigue, vague aches and pains, low-grade fever, and lack of energy were attributed to a di

sorder called neurasthenia, which literally translated to
Biology
1 answer:
dem82 [27]3 years ago
8 0
The prefix 'neur' means nerve, tendon, or sinew.
Asthenia is lack of strength coming from asthenēs which is a (meaning not) + <span>sthenos (meaning strength.)</span>
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Lady_Fox [76]

Answer: right bottom is kidney

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Q. 4 part a, The excretory system.

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And Q. 5 order, 3, 2, 1, 4.

Explanation:

6 0
3 years ago
Read 2 more answers
Which organic molecules are nucleic acids
Lostsunrise [7]
I think it may be this but not quite sure

Lipids are primarily hydrophobic in nature, but there are a large variety of lipids such as fatty acids, mono-, di-, and triglycerides, for example (check wikipedia for more examples). 

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4 0
3 years ago
The minimum amount of energy needed to start a chemical reaction is known as:
nadya68 [22]

Answer:

The correct option is B. Activation energy

Explanation:

The activation energy is usually used to designate the minimum energy necessary for a given chemical reaction to occur, that is, the basic requirement for the reaction to proceed.

For a reaction to occur between two molecules, they must collide in the correct orientation and have a minimum amount of energy. As the molecules approach, their electron clouds are rejected. This requires energy (activation energy) and comes from the heat of the system, that, is, from translational, vibrational energy, etc of each molecule. If the energy is sufficient, the repulsion is overcome and the molecules are close enough for a rearrangement of the bonds of the molecules.

The concept of Activation energy was introduced by Arrhenius in 1889. Arrhenius suggested that molecules must prossess a minimum amount of energy to react. That energy comes from the kinetic energy of the clliding molecules. Kinetic energy serves to cause reactions, but if the molecules move very slowly, the molecules will only bounce when they collide with other molecules and the reaction does not happen. In order for the molecules to react, they must have a total kinetic energy that is equal to or greater than a certain minimum value of energy called activation energy.

6 0
3 years ago
During cold periods, marmots enter a state of torpor which alters their lower critical body temperature. in comparison to the bo
zmey [24]
The answer is A. <span>much more; much shorter than
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Torpor is a short sleep that aims to conserve energy of the animal. In torpor state, the animal will have much lower temperature because the metabolic rate is decreased. Hibernation basically a multiple and longer torpor. The animal will be easier to wake in torpor than hibernation.
6 0
2 years ago
19
Semenov [28]

Answer:

Decodes the sequence of bases on the mRNA and then creates specifc proteins

Explanation:

4 0
2 years ago
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