Biology Answers

what does photosynthesis mean

Callisto has managed to escape Xena, and therefore Xena decides to rest for the night in a small but deep cave at a high altitude in the mountains. a) Describe the changes in Xena’s intrathoracic and intrapleural volume and pressure during quiet inspiration. Explain how these changes occur and describe their effect upon airflow.

Specimen 4. Cerebrum

Illustrate and indicate: I. Cerebral cortex: 1. Plexiform (molecular) layer; 2. Outer granular layer; 3. Pyramidal cell layer; 4. Inner granular layer; 5. Ganglionic layer; 6.Multiform cell layer; II. White matter

Specimen 3. Cerebellum

Illustrate and indicate: I. Cerebellar cortex: 1. Molecular layer; 2. Single layer of huge neurons: (Purkinje cells); 3. Granule cell layer; II. White matter.

 (draw please)

Specimen 2. Spinal cord

Illustrate and indicate: 1. Anterior median sulcus; 2. Posterior median septum; 3. Central canal; 4. Ventral (anterior) horn; 5. Dorsal (posterior) horn; 6. Lateral (intermediate) horn; 7. Ventral white column; 8. Lateral white column; 9. Dorsal white column; 10. Multipolar neurons.

Students must know and illustrate such histological specimens:

Specimen 1. Spinal node

Illustrate and indicate: 1. Capsule; 2. Dorsal root; 3. Ventral root; 4. Ganglion cells; 5. Satellite cells; 6. Bundle of the nerve fibers; 7. Fibroblasts (nuclei) in the interstitial tissue.

Which of the following correctly lists the order of the various stages of development in animals?

a. Gamete formation, fertilization, organogenesis, cleavage

b. Fertilization, gamete formation, cleavage, organogenesis

c. Gamete formation, fertilization, cleavage, organogenesis

What is the feature of cells in Gastrulation phase?

a. Division

b. Migration

c. Differentiation

d. All of these