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Fed [463]
2 years ago
5

Norman grew skin in a lab by adding skin cells to a synthetic material. The skin functioned normally for 12 days. Then Norman se

parated some of the skin cells into cell membranes, cytoplasm, and vacuoles to study them. Which of the following were alive during Normans experiment?
A. The skin and the cytoplasm
B. The skin and the Skin cells
C. The cell membranes and skin cells
D. The cell membranes and cytoplasm
Biology
2 answers:
professor190 [17]2 years ago
7 0

Answer: B

The skin and Skin Cells

Explanation:

why well just took the test and i was right

Hunter-Best [27]2 years ago
6 0

Answer:

The Skin and the Skin Cells

Explanation:

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Which part of the electromagnetic spectrum can humans see with the naked eye? Infrared light
aalyn [17]
I am going with x-rays; it is the most visible to the naked eye out of all the choices.
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3 years ago
Read 2 more answers
Function of a mitochondion
olya-2409 [2.1K]

Answer:

mitochondria are to produce the energy currency of the cell, through respiration, and to regulate cellular metabolism.

Explanation:

the role of mitochondrion is to generate the energy commodity of the cell, by respiration, and control of cell metabolism.Mitochondrial is the ATP synthesis site for the cell. The amount of mitochondria present in a cell is also a strong predictor of the cell 's rate of metabolic activity; cells that are very metabolically active, such as hepatocytes, may have more mitochondria.

hope this helped!

4 0
3 years ago
Write a journal about Jamestown by describing the dangers, the mistakes they did and lastly the hardships? If u do this I will g
Vera_Pavlovna [14]

Answer:

2c. Jamestown Settlement and the "Starving Time"

Explanation:

The first joint-stock company to launch a lasting venture to the New World was the VIRGINIA COMPANY OF LONDON. The investors had one goal in mind: gold. They hoped to repeat the success of Spaniards who found gold in South America.

In 1607, 144 English men and boys established the JAMESTOWN colony, named after King James I.

The colonists were told that if they did not generate any wealth, financial support for their efforts would end. Many of the men spent their days vainly searching for gold.

As a consequence, the colonists spent little time farming. Food supplies dwindled. MALARIA and the harsh winter besieged the colonists, as well. After the first year, only 38 of the original 144 had survived.

PLZ MARK BRAINLIEST

5 0
3 years ago
Approximately 90% of human cancer cells exhibit significant levels of telomerase. Does this mean that telomerase is an oncogene?
alukav5142 [94]

Answer:

No, telomerase is not an oncogene. It prevents the senescence that would occur due to shortened telomeres, but the cell proliferation might still be mitogen-dependent.

Explanation

telomerase is not responsible for causing  deregulation while oncogenes cause deregulation .

Telomeres length shorten after the cell division which stops them to divide again and cell die.

Telomerase prevents this decline in some kinds of cells, including stem cells, by lengthening telomeres, and the hope was that activating the enzyme could  prevent senescence.

6 0
3 years ago
A student wants to perform an experiment to test the effect of different colored lights on the growth of basil plants. She sets
Elena-2011 [213]

Answer:

light is the independent variable, height of the plant is the dependent variable. Dependent is the effect that based on the independent.

Explanation:

lets break it down. 1) you want to know the effect of something you apply from one thing to another. Let say, if you grow your plants under the sunlight, the plants grow taller. In this case, the sunshine is the independent variable whereas the height of the plant/how tall it can grow is the dependent variable. 2)NOW, before i give the answer. The design of the question is not good for high school students. i think your teacher thinks "light" is the independent variable. 3)However, the question contains confounding variables in it because different lights might produce different effects to the height of the plants. If you want to test if plants are exposed to light grows taller than plants do not expose to light, then you should have all the lights are the same. 4) So, all the plants should be exposed to one certain light to avoid confounding. Confounding means that either red light and sunlight are both produce the same effect whereas the other colors do not help the plants to grow taller. 5)Your teacher should test one light at a time. So, if he is testing with all different colors of light, then light is the independent variable, and height of the plant is the dependent variable.

4 0
3 years ago
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