The ________ is a group of cells that will develop into the chorion

Fill in the blank(s) with correct word


trophoblast

Biology & Microbiology

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The number of major histocompatability (MHC) protein combinations possible in a given population is enormous. However, an individual in that diverse population has a far more limited array of MHC molecules because _____

A) the MHC proteins are made from several different gene regions that are capable of rearranging in a number of ways B) MHC proteins from one individual can only be of class I or class II C) each of the MHC genes has a large number of alleles, but each individual only inherits two for each gene D) once a B cell has matured in the bone marrow, it is limited to two MHC response categories E) once a T cell has matured in the thymus, it can only respond to two MHC categories

Biology & Microbiology

____ bonds hold molecules of water together

a. Hydrogen b. Ionic c. Covalent d. Inert e. Single

Biology & Microbiology

Which of the following describes DNA within a eukaryotic cell?

A. DNA is surrounded by two separate phospholipid membranes within the cell. B. DNA is packaged around proteins within the nucleus. C. The phosphate group of the nucleotides within DNA have a negative charge. D. All of the above

Biology & Microbiology

In photosynthesis, the light-independent reactions do not directly require the presence of sunlight

Indicate whether the statement is true or false

Biology & Microbiology