AP Biology : Understanding Embryogenesis and Development
Study concepts, example questions & explanations for AP Biology
All AP Biology Resources
Example Questions
Example Question #47 : Reproductive System
Which of the following is true of human yolk, or ooplasm?
There is only a small amount in each oocyte
Ooplasm lacks fat
The ooplasm sustains oocyte growth through the entire process of embryogenesis
Ooplasm is located at the cell cortex
There is only a small amount in each oocyte
In a human egg cell the yolk—ooplasm—located at the cell center in an area containing the nucleus and nucleolus. The ooplasm is composed of fatty granules that support embryo development through the early stages of embryogenesis. In human oocytes, there is a relatively small amount of ooplasm compared to the embryos of other species.
Example Question #48 : Reproductive System
At the end of cleavage, where is the developing embryo located in the female reproductive system?
Uterus
Ovary
Cervix
Fallopian tube
Uterus
During fertilization and throughout the process of cleavage, the developing embryo is located in the fallopian tube. Towards the end of cleavage, around day 5, the developing embryo enters the uterus, where it will implant in the uterine wall after blastulation.
Example Question #43 : Reproductive Physiology
Which of the following types of cell signaling structures is formed between blastmoreres during cleavage?
G-protein coupled receptors
Plasmodesmata
Gap junctions
Clathrin-coated vesicles
Gap junctions
During cleavage, gap junctions form between blastomeres, promoting cell-cell communication and coordinated development.
Example Question #51 : Reproductive System
Which of the following is true about determinate cleavage?
It takes place in most protostomes
Blastomeres do not have unlimited developmental potential
The developmental fate is set early in the developmental process
All of these
All of these
Determinate cleavage is a process found in most protostomes, in which the developmental fate of cells is determined early on in the developmental process. In other words, blastomeres do not have the capacity to develop into any cell type.
Certified Tutor
All AP Biology Resources
