bild2_25

bild2_25 - BILD 2 Multicellular Life LECTURE#25 Website...

Info iconThis preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
BILD 2: Multicellular Life LECTURE #25 Website: http://www.biology.ucsd.edu/classes/bild2.WI11.1 Instructor: Darwin K. Berg ([email protected]) ANNOUNCEMENTS: 1) Final Review Session: Wed, Mar 16, 5-8 pm, 3500 Pacific Hall. Building entrance code that day: 701181 . 2) Final Exam: Fri, Mar 18, 8-10:50 am, WLH 2001. 3) Relevant Material for the Final Exam: a) A third devoted exclusively to the last third of the course. b) The remaining two-thirds: comprehensive (entire course).
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Fig. 47-3: Acrosomal and Cortical Reactions during Sea Urchin Fertilization Basal body (centriole) Sperm head Sperm-binding receptors Acrosome Jelly coat Vitelline layer Egg plasma membrane Hydrolytic enzymes Acrosomal process Actin filament Sperm nucleus Sperm plasma membrane Fused plasma membranes Fertilization envelope Cortical granule Perivitelline space EGG CYTOPLASM 1. Sperm contacts egg jelly coat, triggering exocytosis of sperm acrosome 2. Enzymes from acrosome make hole in jelly coat. Actin filaments form from the acrosome/sperm-head and penetrate the jelly coat. Proteins
Background image of page 2
Image of page 3
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 11

bild2_25 - BILD 2 Multicellular Life LECTURE#25 Website...

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online