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DiKsa [7]
2 years ago
15

The heart of an embryo starts to pump blood by the ________.

Biology
2 answers:
astra-53 [7]2 years ago
6 0
Emerging from the placenta is the umbilical vein, which carries oxygen-rich blood from the mother to the fetal inferior vena cava via the ductus venosus to the heart that pumps it into fetal circulation.
melamori03 [73]2 years ago
5 0

Answer:

fourth week of pregnancy

Explanation:

Mark me brainly please

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Answer:

Cloning is a form of mitosis, which produces cells that are identical to each other. Cloning couldn't be meiosis because meiosis creates cells that are genetically different from each other. ... You can take body cells and put their nucleus into an unfertilized egg cell that has had its nucleus removed.

Explanation:

brainliest plzzz

7 0
3 years ago
Culturing of the sputum resulted in the growth of distinct colonies on the medium, and the technician informs you that further i
Irina-Kira [14]

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The correct answer is: B. pure culture.

Explanation:

  • Sputum sample contains varied types of bacteria.
  • When this sample is cultured on a growth medium all the different types of bacteria grow on it.
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  • In the given growth medium distinct colonies of bacteria are formed.
  • Each such colony is formed from a single bacteria.
  • When such a single distinct colony is inoculated in a separate medium and bacteria is grown in that, then a Pure culture of bacteria is generated.
  • A Pure culture can be defined as such a culture which is comprised of single type of bacterial cell, formed from a single bacteria.

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3 years ago
How do the evolutionary chart and the video support the claim that all living things are made up of cells
Scrat [10]

Answer:

Cells make up tissue and tissue makes up all living creatures

Explanation:

6 0
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Mutations have an important role in how species change over time.
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What is the basic unit of structure and function of living things?
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The basic unit of life is cell(s).
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