Which of the following statements best distingueshes hypothesis from theories in science?a. Theories are hypotheses that have been proved.
b. Hypothesees are guesses; theories are correct answers.
c. Hypotheses usually are relatively narrow in scope; theories have broad explanatory power.
d. Theories are proved true; hypotheses are often contradicted by experimental results.

Answers

Answer 1

Answer:

Answer: c. Hypotheses usually are relatively narrow in scope; theories have broad explanatory power.

Explanation:

In scientific decipline, the hypothesis is a tentative statement which is produced by the method of prediction and assumption based on direct observation of the natural phenomena or event. It can be tested by using the experimental methodology.

Theory is a explaination for the cause of natural event or phenomena. This is based on the evidences obtained after experimental trials. A hypothesis can be used for generation of theory. A theory is more explanatory approach because of the details and evidences than hypothesis. Hence, c is the correct option.

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Personality traits that remain stable and relatively unchanging from about age 30 on are called

Answers

Dispositional traits are personality traits that remain stable and relatively unchanging from about age. They refer to the tendency of an individual to behave in stable and predicted ways. It is similar with the concept of moods. Costa and McCrae believed that personality traits remain the same by the age of 30.

Science In a cell, what is the function of the cell membrane?
OA. It only maintains the cell shape.
ОВ.
It removes waste and stores ingested food.
OC. It generates energy for the cell.
OD.
It controls the entry and exit of substances.

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Answers

Answer:

D. It controls the entry and exit of substances.

Explanation:

The cell membrane provides protection for the cell, transporting nutrients in and carrying toxic substances out.

Very small changes in the solute concentrations in the various fluid compartments cause water to move from one compartment to another, which alters blood composition and blood pressure. How do the following physiological changes affect blood pressure?a. Decrease water reabsorption
b. Decrease peripheral resistance
c. Vasodilation
d. Decrease salt intake
e. Decrease blood volume
f. Vasoconstriction
g. Increase peripheral resistance
h. Increase salt intake
i. Increase blood volume
j. Increase water reabsorption

Answers

Answer:

a. Decrease water reabsorption: decrease blood pressure.

b. Decrease peripheral resistance: decrease blood pressure

c. Vasodilation: decrease blood pressure

d. Decrease salt intake: decrease blood pressure

e. Decrease blood volume: decrease blood pressure

f. Vasoconstriction: increase blood pressure

g. Increase peripheral resistance: increase blood pressure

h. Increase salt intake: increase blood pressure

i. Increase blood volume: increase blood pressure

j. Increase water reabsorption: increase blood pressure

Explanation:

Total peripheral resistance: This term refers to the resistance offered by the vascular system to the blood flow. This resistance is a result of the friction between the blood and the vessel's walls. In other words, it is the opposition of the vessels to blood flow. The total peripheral resistance is the summary of all the bloody circuit resistances in the body. Those mechanisms that induce vasoconstriction conduce to an increase in total peripheral resistance, while mechanisms that induce vasodilation provoke a decrease in total peripheral resistance.

Blood pressure: This term refers to the strength applied by the blood against the vessel walls as it flows. This pressure is determined by the bombed blood strength and the volume as well as by the vessel size and flexibility. Blood pressure changes continuously according to the activity, temperature, diet, emotional state, among others.

Salt ingestion causes an increase in plasmatic osmolarity, stimulates thirst, and hence, water ingestion. Sodium retains water, expanding the blood volume and causing an increase in vessel pressure.
The antidiuretic hormone, also known as vasopressin hormone, is released by changes in serum osmolarity or blood volume. Its function is to keep homeostasis and make kidneys conserve or keep water by concentrating urine and by reducing its volume. By these actions, the antidiuretic hormone stimulates water reabsorption, according to the organism´s needs.
Kidneys control blood pressure in many ways. If the pressure is elevated, kidneys produce the loss of salt and water, normalizing arterial pressure. But if pressure is low, kidneys conserve water.

Convert the volume of CO2 you measured in the glucose reaction to moles of CO2 using the Ideal Gas Law to solve for n. Assume P is 1 atm. n = PV/RTwhere P is the atmospheric pressure in the lab, V is the volume in liters of CO2, n is the number of moles of CO2, R is the gas constant 0.082 L-atm/mole-Kelvin, and T is the temperature in Kelvin. Convert the gas volume to L by dividing the volume in mL by 1000.

Answers

The assumption in this problem is that the gas, CO2, is ideal and that the ideal gas law is applicable such that,
n = PV/RT
We simply substitute the given values to the equation above,
n = (1 atm)(V) / (0.082 Latm/mol.K)(T)
n = 12.20 V/T

Answer:2.990x10 to the -4 moles CO2

Explanation:

The difference between the cellular make-up of a living organism and an aluminum can is the _____. ability to use energy ability to move bonding structure sensitivity

Answers

Answer: The answer would be ability to use energy.

Explanation:

One of the main differences between living and non-living organisms is that the living organisms are able to use energy to maintain homeostasis.

The non-living things such as aluminium can not utilize energy for itself.

However, a living cell uses energy for all its vital functions such as digestion, respiration, et cetera.

Answer:

ability to use energy

Explanation:

The cellular composition between a living organism and an aluminum can is very different. For starters, only living things have cells, as this is the basic structure of living things. In addition, the cells of living things produce and use energy so that the metabolic processes that allow life to continue happen. For this reason, we can say that the difference between the cellular composition of a living organism and an aluminum can is the ability to use energy.

Erythrocytes might the best of example of form equals function because they lack many organelles. What organelles are absent in erythrocytes?

Answers

Mature mammalian red blood cells lack nuclei, mitochondria and rough endoplasmic reticulum, they do not contain DNA and consequently, cannot divide. They also cannot synthesise RNA nor synthesise any new proteins, and consequently, have a limited lifespan. Mature red blood cells circulate for about 100–120 days in the body before they are removed by the spleen.

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