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Igoryamba
3 years ago
6

Help please asap

Biology
1 answer:
vovangra [49]3 years ago
7 0

Answer:

a. Directional selection favors one end of the phenotype distribution, whereas

stabilizing selection favors intermediate over extreme phenotypes

Explanation:

Directional selection is called directional because it favors one phenotype over another, and stabilizing selection finds a balance between phenotypes.

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What does the nucleus consist of?
Gala2k [10]
<h3>NEUTRONS AND PROTONS</h3>

The nucleus is a collection of particles called protons, which are positively charged, and neutrons, which are electrically neutral. Protons and neutrons are in turn made up of particles called quarks. The chemical element of an atom is determined by the number of protons, or the atomic number, Z, of the nucleus.

7 0
2 years ago
Imagine these two elements, element A and element B are solids. The two elements are poured into a beaker and mixed. Illustrate
Kryger [21]

Chromatography is a simple technique in principle, it remains the most important method for the separation of mixtures into its components. It is quite versatile for it can be used to separate mixtures of solids.

Explanation:

  • The two elements of chromatography are the stationary phase and the mobile phase. There are many choices of stationary phases, some being alumina, silica, and even paper.  The mobile phase, in liquid chromatography, can also vary.  It is often either a solvent or a mixture of solvents and is often referred to as the eluant.
  • A careful choice of eluting solvent helps to make the separation more successful.  The mixture is placed on the stationary phase.  The eluant passes over the mixture and continues to pass through the stationary phase carrying along the components of the mixture.
  • Chromatography is used in industrial processes to purify chemicals, test for trace amounts of substances, separate chiral compounds and test products for quality control. Chromatography is the physical process by which complex mixtures are separated or analyzed.
  • Chromatography is based on the principle where molecules in mixture applied onto the surface or into the solid, and fluid stationary phase (stable phase) is separating from each other while moving with the aid of a mobile phase

3 0
3 years ago
HCI+Na&gt;NaCl+H2 what is the answer
kolezko [41]

Here's the balanced chemical equation for the given Reaction,

  • 2 HCl + 2 Na =》2 NaCl + H2

i hope it helped you......

5 0
3 years ago
You have isolated a highly lethal toxin from an octopus that you have reason to believe binds with high affinity to the pore ope
Brilliant_brown [7]

Answer:

To determine the effect of toxin binding, you perform a Competitive Binding Experiment

Explanation:

Competitive binding experiments are very relevant when matters relating to cellular and or molecular toxicity are concerned.

They are used to determine the binding of a single concentration of labeled ligand in the presence of various concentrations of unlabeled ligand.

They are important because:

1. Validate a direct binding assay

2. Confirm whether or not a drug binds to the receptor

3. determine and explore how low-affinity drugs and receptors interact and it's resultant effects

Cheers                                  

5 0
3 years ago
Which of these statements are true and which are false?
emmasim [6.3K]

1 is true

2 is false

3 is true

4 is true

5 is false

6 is false

7 is false

5 0
3 years ago
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