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lions [1.4K]
2 years ago
10

1. A phospholipid has a head made up of a glycerol molecule attached to a single , which is attached to another small molecule.

Biology
1 answer:
marta [7]2 years ago
4 0

Answer:

Phosphate group

Explanation:

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Consider the phylogenetic tree. Which two organisms are most closely related, based on the tree above?
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Answer: dinosaurs and birds
Plentiful collection of f<span>ossils of early birds and their most immediate predecessors has settled the century-old controversy about the origin of birds. Birds are now safely declared to evolve from a group of dinosaurs known as maniraptoran theropods. Birds have similar shape of the bones as a variety of maniraptorans have.  A host of fossils have shown also that the maniraptorans lay looked alike eggs as that of birds and they resemble the birds in the way they laid their eggs also. Those reasons prove that they are most closely related.</span><span>
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- this is converted into food by the process of<br>photosynthesis​
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3 years ago
Which of these materials cannot cross the placenta from mother to fetus?
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A single stranded DNA  (oligonucleotides) can hybridize with (d) both complementary DNA and complementary RNA.

DNA is the Deoxyribonucleic Acid. It is the genetic material present in majority of organisms. The nitrogenous bases present in DNA are: Adenine, thymine, Guanine and Cytosine.  DNA is a double stranded structure hence it forms hydrogen bonds with a complementary strand. The complementary strand can be of a DNA or RNA.

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To know more about DNA and RNA, here

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