This question is incomplete because the options are missing; here is the complete question:
When Amanda added table salt to the first test tube and shook it, she noted that the liquid had dissolved the
A. Solute
B. Acid
C. Solvent
D. Base
The correct answer to this question is Solute
Explanation:
Amanda's experiment involves adding a solid (salt) into a liquid and then mixing both to form a mixture categorized as a solution because one substance has disintegrated in another. Moreover, in this mixture, the liquid is considered as the solvent because this dissolves or disintegrates the salt and the salt is considered as the solute (substance dissolved). In this context, the liquid dissolved the salt or solute in Amanda's solution or mixture.
Answer:
The nerves exiting the vertebrae in the neck area or cervical segments are referred to as C1 through C8. These nerve control signals to the neck, arms, hands, and internal organs. Injuries to these areas result in tetraplegia.
The two atria are thin-walled chambers that receive blood from the veins. The two ventricles are thick-walled chambers that forcefully pump blood out of the heart. The right atrium receives deoxygenated blood from systemic veins; the left atrium receives oxygenated blood from the pulmonary veins.
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Usually, animal cells do not have vacuoles. But, when they do, those vacuoles are included in the processes of vesicular transport: exocytosis and endocytosis. Their role is to support that type of transport: vacuoles are storage vesicles for proteins and lipids that have to be containment, before their excretion (through the exocytosis). On the other hand, during endocytosis (materials brought into the cell) engulfed material is also located in that membrane-enclosed vacuole.
Answer:
Independent variable: Salinity/Salt concentration
Dependent variable: hatching rate
Explanation:
As rightly stated in this question, INDEPENDENT VARIABLE, in an experiment, is the variable that the experimenter changes or manipulates in order to bring about a measurable response while the DEPENDENT VARIABLE is the variable that the experimenter measures in an experiment. Dependent variable as the name implies is dependent on the independent variable.
In this question where an hypothesis was given as follows: "Hatching brine shrimp is related to salinity (how salty the water is), then the greater the salt concentration, the higher the hatching rate". The hypothesis relates the independent and dependent variables i.e. it tells us how the independent variable affects the dependent variable.
Hence, according to the hypothesis, it is telling us how a change in SALINITY OR SALT CONCENTRATION will affect HATCHING RATE. Therefore;
Independent variable: SALINITY/SALT CONCENTRATION
Dependent variable: HATCHING RATE
