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Paraphin [41]
2 years ago
8

Five dialysis bags constructed of membrane, which is permeable to water and impermeable to sucrose, were filled with various con

centrations of sucrose and then placed in separate beakers containing an initial concentration of 0.6 M sucrose solution. At 10-minute intervals, the bags were massed (weighed) and the percentage change in mass of each bag was graphed.

Biology
1 answer:
Gekata [30.6K]2 years ago
3 0

Answer:

The options

A. A

B. B

C. C

D. E

The CORRECT ANSWER IS D.

E.

Explanation:

It is a regular occurrence for dialysis bags or dialysis tubing to be employed in permitting smooth movement of molecules when having to do with a fluid. These bags are normally evaluated to ensure that the client has adequate amount in th bag so as to be able to achieve the goal at hand.

If we have five dialysis bags being formed from a semi-permeable membrane which is impermeable to sucrose, they may be saturated with different concentrations of the sucrose with each of these bags being positioned in different beakers that have an initial amount of 0.6 M of a sucrose solution.

At ten minute intervals, the bags were massed and the weight was calculated to look for changes in the level of concentration. In this situation, the bag with the lowest initial concentration of sucrose is be the one that has its mass reducing over time and that is E.

The attached image confirms our answer as from the graph, option E shows the lowest initial concentration of sucrose.

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Meiosis ensures the transmission of traits from one generation to the next. At the same time, it is a key process that introduce
rodikova [14]

Answer:

See the explanation below, what is the question you intend to ask anyway?

Explanation:

  • Meiosis transmit traits from one generation to the next. It the  key process that brings genetic variation into the traits that offspring inherit from their parents.  In the life cycle of an organism, meiosis is paired with the process of fertilization.
  • Meiosis produces two daughter nuclei with the same number of chromosomes as the parent cell as each other.The chromosomes are re-grouped during meiosis to form new combinations of genes. Genetic reunion is very important as a source of genetic variation.

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2 years ago
Bacteria with the ability to break down certain types of plastic are placed with a colony of E. coli bacteria that lack this abi
iogann1982 [59]

Answer:

D. Plasmids are nucleic acids which can pass on traits

Explanation:

A Nucleic acid is one of the four biomolecule polymers in living systems. It is made up of monomeric units called Nucleotides. RNA and DNA are the two nucleic acids in existence and they function in storage and expression of genetic information.

According to the question, a colony of bacteria that can break plastics were mixed with the colony that can't break plastics. The two different colonies engage plamids, which conferred the ability to break plastics to some of the colonies that previously couldn't. This tells us that the ability to break plastics in the certain bacteria colony is GENETIC.

If the trait is genetic, the plasmid must be a nucleic acid because of the ability to genetically pass on traits. Note that, a plasmid is an extra-chromosomal DNA (nucleic acid) capable of replicating on its own. Hence, plasmids are nucleic acids which can pass on traits.

8 0
1 year ago
​a client with hypovolemia has been prescribed intravenous fluid at 125ml/hr. the iv site to provide hydration has infiltrated.
Levart [38]

The following are the steps the nurse would take to treat the infiltrated site:  

1. Stop the infusion and remove the catheter

2. Elevate the extremity

3. Encourage an active range of motion

4. Apply a cold or warm compress depending on the solution infusing

5. Restart the infusion proximal to the location or in another extremity

Now, in order to address hydration requirements of the client, the nurse will have to begin a novel peripheral intravenous in another extremity or to again start the infusion if intravenous access has been created.  


6 0
2 years ago
Read 2 more answers
After five trials, Ronald and Maria calculated the experimental density of aluminum to be 2.54 g/cm3. If the actual density of a
RideAnS [48]
Percent error is a statistical tool used for evaluating precision. It is expressed as:

Percent error = | (experimental value - theoretical value) / theoretical value | x 100%

Experimental value represents the calculated value while the theoretical value represents the known value. A percent error value which is approaching zero means that your experimental value is close to the known value. Which can possibly mean that you have precise measurements. Calculations are as follows:

Percent Error = | (2.54 - 2.70) / 2.70 | x 100 =5.93%

Thus, the answer is b. 5.93%.
3 0
2 years ago
A germ cell and zygote represents the biological level of organization. __________
kompoz [17]

Answer: Cell

Explanation:

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When a male and female gamete(germ cell) fuse together they form zygote. Firstly it is a single cell surviving inside the mother's womb.

Then differentiation takes place and the cell keeps on dividing to form different tissue layers and then organs form which makes a complete baby. Hence, zygote and germ cell are cellular level of organization.

6 0
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