Biology, 08.10.2019 01:10 lily539711
The sole of a gecko's foot is covered with millions and millions of small, dry "hairs" that make direct contact with surfaces, and allow geckos to walk up walls and dangle from the ceiling. experiments showed that the "hairs" stick well to strongly hydrophobic, strongly hydrophilic, and electrically neutral surfaces and that covalent bonds were not involved. what noncovalent bond is probably involved in the foot adhering to a surface?
Answers: 2
Biology, 22.06.2019 01:00
Works together in the synthesis, modification, packaging, and transport of lipids and proteins
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Biology, 22.06.2019 05:00
What is a group of organisms that are closely related and share similar characteristics
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Biology, 22.06.2019 05:50
Is there any species that went extinct in recent years due to natural causes (not caused by human interaction). if so, what caused it?
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Biology, 22.06.2019 13:00
Astudy by solloch and et. al., in 2017, gives the map above which shows the frequency of alleles with a ccr5-delta32 mutations over 87 different countries. this mutation deletes the presence of a co-receptor (ccr5) on the outside of human t-cells (lymphocytes). some viruses, such as the one responsible for the black death and human immunodeficiency virus (hiv), require this receptor for attachment to host cells during the infection process. the black death was an epidemic that passed over northern europe during the 14th century killing nearly 60% of europeans. according to this information, which explanation best explains why northern europeans show a greater immunity for hiv than some other parts of the world?
Answers: 1
The sole of a gecko's foot is covered with millions and millions of small, dry "hairs" that make dir...
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