Biology, 27.10.2021 20:00 krystalhurst97
Explain how scientists use geologic time to determine the age of landforms.
Answers: 3
Biology, 22.06.2019 05:30, maddireigh6403
How is transcription similar to translation in terms of base pairing?
Answers: 3
Biology, 22.06.2019 06:10, thompsonhomes1
The normal shape of an enzyme is as shown in structure a. if the enzyme’s shape changes to that shown in structure b, what are two consequences of this change?
Answers: 1
Biology, 22.06.2019 13:00, mimivenga
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
Biology, 22.06.2019 13:10, mroueh21
Once an egg cell is fertilized by sperm, the cell then, as the embryo develops, it receives nourishment and eliminates wastes by transferring substances from its blood to its mother's blood. a. becomes a fetus immediately and exits the womb b. begins to divide and implants itself in the wall of the uterus c. remains in the uterus without dividing for several months d. travels back to the ovaries until the fetus is developed
Answers: 2
Explain how scientists use geologic time to determine the age of landforms....
Mathematics, 02.02.2021 17:50
Mathematics, 02.02.2021 17:50
Mathematics, 02.02.2021 17:50
Mathematics, 02.02.2021 17:50