Through which microscope were cells first observed?

simple microscope

tunneling microscope

compound light microscope

electron microscope

What type of muscle is found in the leg

What lymphatic tissue in the submucosa of the small intestine prevents bacteria from entering the blood?

At room temperature, an element is a A. gas B. liquid or gas C. gas or solid D. liquid, gas, or solid

Along with plants and algae, in which organisms can photosynthesis occur? A some bacteria B all fungi C some animals D all protists

Imagine that twins are separated at birth. One is raised speaking only English, whereas the other is raised in a bilingual household and speaks both English and Spanish. Years later, the twins meet and decide to learn French together.

Muscle cells differ from nerve cells mainly because they a. express different genes. b. contain different genes. c. use different genetic codes. d. have unique ribosomes.

The butterflies shown below all belong to the same species, but one of them has inherited a rare mutation for blue wings rather than orange wings. The butterflies feed on nectar from orange flowers, and their color acts as camouflage while they feed.

A normal human karytype has

Cual es el proposito de la nutricio?

Azotobacter A. forms endospores. B. forms cysts. C. fixes carbon dioxide. D. are used as an indicator of fecal pollution.