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ohaa [14]
3 years ago
7

Darwin collected an studied many specimens to understand natural selection on the Galapagos islands. which organisms did he stud

y while he was there
Biology
1 answer:
frez [133]3 years ago
5 0

He chose to study birds, plants, and animals. Mostly 2 types of Finches.

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Which conclusion about the sand on a beach below a sea cliff is most justified?
kolbaska11 [484]

The correct answer is that some of the sand originayed from the sea-cliff rock itself.

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Happy Science!

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3 years ago
Certain cells that line the stomach synthesize a digestive enzyme and secrete it into the stomach. This enzyme is a protein. Whi
kaheart [24]

Answer:

The correct answer is option B. exocytosis.

Explanation:

Exocytosis is a process that helps in transport secretory products to the plasma membrane through the cytoplasm in a cell. In this process, the materials are transported out of the cell with the help of vesicles.

Some of the examples of the exocytosis are the secretion of the enzymes, proteins, peptide hormones and antibodies from the cell linings of the stomach that help in the digestive process.

Thus, the correct answer is option B. exocytosis.

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3 years ago
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If you were to use an adult cell’s nucleus with intact DNA from a Tasmanian tiger to replace the nucleus of a Tasmanian devil’s
balandron [24]

Answer:

The organism would be genetically almost similar to Tasmanian tiger.

Explanation:

DNA is the genetic material and is responsible for heredity. The DNA present in the nucleus of an egg cell contributes genetic traits of the mother to the progeny. It imparts the progeny some of the genetic traits of the mother.

In the given experiment, DNA from the Tasmanian tiger was introduced into the egg cell of the Tasmanian devil and the transgenic egg cell was allowed to produce a new progeny. Since the implanted transgenic egg cell carried the genetic information from the Tasmanian tiger, the resultant progeny would be almost similar to a Tasmanian tiger.

7 0
3 years ago
What happens to the uterus lining during days 1-12 as estrogen is rising?
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During the first phase of the menstrual cycle which is called the follicular phase, estrogen hormone will gradually increase causing the uterus lining to thicken. This thickening of uterine lining is preparation for possible implantation of embryo if fertilized egg travels safety to the uterus. 
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