Which of the following is Archaeopteryx an important link for?

a. dinosaurs and birds
b. crocodiles and birds
c. non-flying birds and flying birds
d. lizards and birds


Answer: a. dinosaurs and birds

Biology & Microbiology

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The genome of cancer cells tends to become unstable

Indicate whether the statement is true or false

Biology & Microbiology

One kind of vaccine consists of a solution containing ________

A) antibodies B) horse serum C) B cells D) a harmless variant of a disease-causing microbe

Biology & Microbiology

An injection of the pancreatic hormone ________ would cause blood glucose levels to fall

Fill in the blank(s) with correct word

Biology & Microbiology

Sebum contains ________ which contributes to creating an inhospitable environment on the surface of the body.

A. lysozyme B. collagens C. acids D. salts E. bile

Biology & Microbiology