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inn [45]
4 years ago
12

The structure that contains two arteries and one vein, and connects the developing embryo to the mother's body, is called the __

___. amnion placenta embryo umbilical cord
Biology
1 answer:
OverLord2011 [107]4 years ago
4 0
Umbilical cord is the correct answer to the fill in the blank.
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B. bacterial enzymes that destroy phage DNA.

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Which of the following is the largest and least specific level of organization?
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You did not leave any choices, however, in biological organiztion, the kingdom is the least specific, yet largest level.
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X-gal is included in the growth medium on which cells transformed with bacterial plasmids are grown. The reason x-gal is include
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<h3>What are cells?</h3>
  • Cells are the basic building blocks of all living things. The human body is comprised of trillions of cells. They deliver structure for the body, take in nutrients from food, convert those nutrients into significance, and carry out technical functions.
  • Cells are of two types: eukaryotic, which include a nucleus, and prokaryotic cells, which do not have a nucleus, but a nucleoid province is still present. Prokaryotes are single-celled organisms, while eukaryotes may be either single-celled or multicellular.
  • They deliver structure for the body, take in nutrients from food, convert those nutrients into significance, and carry out technical functions. Cells also include the body's genetic material and can make duplicates of themselves. Cells have multiple parts, each with a separate function.

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4 0
2 years ago
Why do plants need to be specialized to survive in arid climates?
mrs_skeptik [129]

<u>Answer:</u>

Area receives little precipitation.

<u>Explanation:</u>

  • Arid climate is a type of climate that receives less than 25.4 cm of rainfall throughout the year.
  • Desert climate is called as arid climates. Rainfall in arid climates is usually irregular but when rainfall occurs then it will be huge with thunderstorm.
  • Many plants and animals found in that climate adopt themselves from rare rainfall and they remain inactive during most of time of the year and active only on the time when rainfall occurs.
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4 years ago
If all mammals today evolved in 65 millions years from a common ancestor, and if one species took 100,000 years to evolve, how m
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650

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3 years ago
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