What type of organism makes up the oldest known fossil?

The bacteria and archaea include microscopic prokaryotes that lack membrane-bound nuclei. what criteria have lead to the classification of these two groups as separate domains?

A plant leaf shows veins arising from a central thick vein to form a complicated network. Which type of venation does this plant exhibit? A. Parallel B. Crisscross C. Reticulated

S formed when the ovum and sperm unite and fertilization takes place

What do hot, subsurface water contain when they are identified as hydrothermal solutions?

The variety of life in the world or in a particular habitat or ecosystem is called

What term is defined as the ability to do work?

How do the functions of the skeletal and muscular system differ? A. Muscles provide structure and support to the body, while bones move the muscles. B. Muscles send signals to the body, and bones are responsible for movement. C.

What structures form cytoplasmic channels that connect adjacent plant cells through the cell walls?

Expt. No. Date Uninone sustam 1. Explain the process of urine formation in nephron

Conceptos referidos a las funciones de los seres vivos. Nutrición