The majority of bacterial DNA is negatively super coiled

Indicate whether the statement is true or false


TRUE

Biology & Microbiology

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When a tissue has become sensitized from a maladaptive immune response toward a normally harmless substance, this is termed what?

a. infection b. immunocompromised c. hypersensitivity d. immunodeficiency

Biology & Microbiology

The earliest vascular plants on land had underground stems (rhizomes) but no roots. Water and mineral nutrients were most likely obtained by _____

A) diffusion through stomata B) absorption by mycorrhizae C) osmosis through the root hairs D) diffusion across the cuticle of the rhizome

Biology & Microbiology

Which is an incorrect match of taxonomic category and common name?

A. Actinopterygii/ray-finned fish B. Squamata/lizards and snakes C. theropods/crocodiles D. Dipnoi/lungfish E. Apoda/caecilians

Biology & Microbiology

Darwin was influenced by which concept attributable to Charles Lyell?

a. The geological history of Earth is a series of catastrophes. b. Acquired characteristics can be inherited. c. Natural selection operates on the tremendous variation found in nature. d. All life forms a part of a great Chain of Being. e. Gradual geologic forces formed the earth's current landscape over a long period of time.

Biology & Microbiology