Name 2 specific proteins you might expect the enzymes released by the acrosome to breakdown. What purpose does this play in the fertilization of the egg? Explain your reasoning.

As a sperm cell finally approaches its final target, its acrosome becomes activated.  The acrosome is a specialized organelle found in the cell’s head region and activation results in the exocytosis of several types of proteolytic enzymes. Name 2 specific proteins you might expect the enzymes released by the acrosome to breakdown. What purpose does this play in the fertilization of the egg? Explain your reasoning.

168 Chapter 14 3. Prophase: This is when the DNA coils up and the chromosomes are now visible under the microscope. Each chromosome is now doubled, and consists of two absolutely identical “chromatids." (A chromatid is the name for one of the duplicated DNA molecules that has coiled itself into a chromosome form and is attached to the other chromatid.) A2 A 4. Metaphase: The chromosomes (each consisting of two chromatids) line up end to end, in random order, along the midline of the cell. Spindle fibers have formed and are attached to the chromosomes. You will have to imagine fine threads attached to your beads. B1 B2 A2 5. Anaphase: The spindle fibers pull the duplicated chromatids apart and move them to opposite ends (poles) of the cell. 6. Telophase: Chromosomes are at opposite ends of the cell, and the cell divides into two cells. Notice that you started with a cell having two sets of chromosomes, and you ended with two cells, each having two sets of chromosomes. ? QUESTION 1. Are…

Specify the correct number of chromosomes and chromatids in each of the following human cell types. A spermatagonial precursor about to enter meiosis has 46 chromosomes and chromatids. An egg cell has chromosomes and chromatids. A cell entering meiosis II has chromosomes and chromatids.

5. List in the correct order the series of cytoskeletal events that occurs in a newly fertilized egg of the nematode worm C. elegans. Assume that the paternal sperm nucleus has just entered a symmetrical egg cell. Your response should be a five-letter string composed of letters that correspond to individual events, e.g., ABCD. (A) Asymmetric localization of PAR proteins (B) Sperm centrosome nucleates a microtubule aster (C) Uneven first cell division along anterior-posterior axis (D) Loss of Rho activity decreases myosin II contractility

Give 4 similarities and 4 differences between the condensation of DNA during mitosis and the folding of proteins in the cytosol.

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When chromatids are separated during anaphase, how do we know that the microtubules that they are connected to are not actually shortening to "pull" the chromatids apart?

Need help on this one

19. The diagram below represents a process that occurs during sexual reproduction. A B C + - (Not drawn to scale) The process represented by the arrow will ensure that *REQUIR structures A and B contain a complete set of genetic information structure C contains half of the genetic information structures A and B contain half of the genetic information structure C contains a complete set of genetic information *REQUIRED