'Human sperm' presentation slideshows

Forensic DNA Analysis

Forensic DNA Analysis. DNA is the Genetic Material. Sources of Biological Evidence. Saliva. Blood. Tissue. Urine. Semen. Hair. Feces. Bone. Teeth. Skin Cells. Sweat. Critical to Locate Evidence. It is important to have good crime scene analysis.

1.84k views • 71 slides

Fertilization a process at the beginning of ourselves

Fertilization a process at the beginning of ourselves. Structure of Sperm and Egg. Sperm A human sperm. Egg Overview The zona pellucida. Scanning electron micrograph of a human sperm contacting a hamster egg. For detail.

774 views • 54 slides

Hybrid Humans: What's at Stake?

Dennis M. Sullivan, MD, MA (Ethics) Director, Center for Bioethics Cedarville University Center Web Site: www.cedarville.edu/bioethics E-mail: sullivan@cedarville.edu. Hybrid Humans: What's at Stake?. Objectives.

590 views • 34 slides

495 views • 31 slides

Energy Flow in Living Things

12/14/09 . Energy Flow in Living Things. Catalyst. What do you eat to get energy? What type of biological molecule has the longest lasting energy? What type of biological molecule has the shortest lasting energy?. Relationships to Energy.

417 views • 26 slides

Warmup Monday 1/28

347 views • 19 slides

MEIOSIS

351 views • 16 slides

Dr . Larry Johnson Texas A&M University

Medical School Histology: Images of the Human T estis. Please subscribe. Dr . Larry Johnson Texas A&M University. Observe/manipulate the images on your computer. Human sperm in smear Spermatozoon. Human e jaculated spermatozoon. Human epididymal spermatozoa. horse.

339 views • 15 slides

Chapter 8 Cell Reproduction

Chapter 8 Cell Reproduction. Objectives: 1. Describe the structure of a chromosome. 2. Compare prokaryotic chromosomes with eukaryotic chromosomes. 3. Explain the differences between sex chromosomes

200 views • 5 slides

spam1

Hyaluronidase degrades hyaluronic acid, a major structural proteoglycan found in extracellular matrices and basement;membranes. Six members of the hyaluronidase family are clustered into two tightly linked groups on chromosome 3p21.3;and 7q31.3. This gene was previously referred to as HYAL1 and HYA1 and has since been assigned the official symbol;SPAM1; another family member on chromosome 3p21.3 has been assigned HYAL1. This gene encodes a GPI-anchored enzyme;located on the human sperm surface and inner acrosomal membrane. This multifunctional protein is a hyaluronidase that;enables sperm to penetrate through the hyaluronic acid-rich cumulus cell layer surrounding the oocyte, a receptor that;plays a role in hyaluronic acid induced cell signaling, and a receptor that is involved in sperm-zona pellucida;adhesion. Abnormal expression of this gene in tumors has implicated this protein in degradation of basement membranes;leading to tumor invasion and metastasis. Multiple transcript variants encoding different isoforms have been found for;this gene.

51 views • 4 slides

Abstract

Figure 21: A prepared slide for human sperm with kinked tail. Figure 18: A prepared slide for human sperm with coiled tail. Figure 19: A prepared slide for human sperm with short tail. NAaseI Hypersensitivity Site Assay. Figure 20: A prepared slide for human sperm with double tail.

149 views • 1 slides