Which of the following characteristics can be found in all fish?  Select all that apply.A) Nutritional deficienciesB) JawsC) LungsD) BonesE) Vertebral column

What will be an ideal response?


A, B, E

Biology & Microbiology

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The physical location in the environment to which an organism has adapted is its ________.

A. community B. habitat C. biome D. population E. niche

Biology & Microbiology

Most organ transplants fail because

a. of poor vascular connection between host and donor tissue. b. the migrating leukocytes attack the tissue adjacent to the transplant. c. cytotoxic T cells enter the transplant through the connecting blood vessels and kill the individual transplant tissue. d. introduced tissues produce antibodies that cause a massive reaction. e. of all of these.

Biology & Microbiology

3 types of structural classifications

What will be an ideal response?

Biology & Microbiology

Several scientific laboratories across the globe are involved in research concerning the origin of life on Earth

Which of these questions is currently the most problematic and would have the greatest impact on our understanding if we were able to answer it? A) How can amino acids, simple sugars, and nucleotides be synthesized abiotically? B) How did RNA sequences come to carry the code for amino acid sequences? C) How could polymers involving lipids and/or proteins form membranes in aqueous environments? D) How can RNA molecules act as templates for the synthesis of complementary RNA molecules?

Biology & Microbiology