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Ber [7]
3 years ago
8

Using a broom to clean sidewalks and driveways is a way to reduce water pollution

Biology
2 answers:
zvonat [6]3 years ago
6 0

Answer:

true

Explanation:

h

yulyashka [42]3 years ago
5 0
This can be possible because we no longer need to use a large hose and spray water on the roads and let the dirty water drain away back into seas and rivers and create water pollution. However, this methods requires a large amount of labor and time.
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Two parts of an experiment are the control and the
torisob [31]

independent variables, dependent variables, and experimental units hope this helps

3 0
3 years ago
2. Protein A has a binding site for ligand X with a Kd of 10-6M. Protein B has a binding site for ligand X with a Kd of 10-9M. W
allsm [11]

Answer:

Protein B has a higher affinity for ligand C than protein A

Explanation:

Binding affinity is a measure of the strength of the bonds or interactions between a single biomolecule or receptor to its ligand. A ligand is usually a small molecule that binds to a specific receptor.

The receptor is usually a large molecule that contains a specific site for the binding of ligand.

Binding affinity is usually measured by the equilibrium dissociation constant (KD). The equilibrium dissociation constant KD is a ratio of the dissociation and the association of ligand to the receptor. The value of KD is used to evaluate and compare the strengths of bimolecular interactions.  The larger the KD value, the more weakly the target molecule and ligand are attracted to and bind to one another.

The higher the dissociation constant (KD), the weaker the affinity is between the interacting molecules, whereas, the smaller the KD value, the greater the binding affinity of the ligand for its target.

Protein B has a KD value of 10⁻⁹ M while Protein A has a KD of 10⁻⁶ M.

Ration of KD of protein B to protein A = 10⁻⁹ M/10⁻⁶ M = 10⁻³

Therefore, protein B has a KD value which is 1000 times smaller than the KD of protein A.

8 0
3 years ago
Reactive metals undergo combustion. Which product(s) form when sodium
Sergio039 [100]

Answer:

B

Explanation:

sodium oxide and water

3 0
2 years ago
What are the appendages of a sea anenome called?
Natasha2012 [34]
They have their tentacles which house cells called<span> cnidocytes.</span>
6 0
3 years ago
You water three sunflower plants with salt water. Each plant receives a different concentration of salt solutions. A fourth plan
Kruka [31]

Answer:

The fourth plant that receives pure water is the control group.

Explanation:

The election of a control group is essential in an experiment. Its principal purpose is to allow the discrimination of the results obtained by the treatment in the study, in this case, <em>the different concentrations of salty water that each plant receives</em>. The control group provides a reference point. It must be selected from the same population of the treatment groups. Both groups must be similar in every variable that might influence the results, <u>except for the study treatment.</u>

5 0
3 years ago
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