Which of the following is NOT true of proteins?
a. They determine the structure and function of cells and tissues.
b. They function as receptors.
c. They function in recognition.
d. They are the code for molecules that are important for life processes.
e. They enable cells to communicate.
D
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Which one of the following traits would be found in a typical fern but not a moss?
A. homospory B. tracheids C. gametophytes with rhizoids D. antheridia E. a sporophyte generation
The organizational phases of development are regulated by
A. transcription factors B. morphogens C. segmentation genes D. morphogens and transcription factors only E. morphogens, transcription factors, and segmentation genes
The two photosystems of light-dependent reactions are designated ____
a. type 1 and type 2 b. type I and type II c. photosystem A and photosystem B d. photosystem 680 and photosystem 700 e. photosystem I and photosystem II
A sheath of connective tissue that encloses each skeletal muscles is known as _____.
A. cartilage B. a ligament C. a sphincter D. a joint E. a tendon