Which type of molecule is most abundant in a typical cell?
A) Carbohydrate
B) Nucleic acids
C) Water
D) Lipid
E) Protein
C
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Trypanosomes that cause disease in humans escape destruction by the human immune system because they are resistant to phagocytosis.
Answer the following statement true (T) or false (F)
The first recognized vascular plant fossil was derived from the extinct genus ________, which had leafless stems with simple, forked branches of equal size.
A. Lycopodium B. Cooksonia C. Marchantia D. Equisetum E. Spirogyra
Male fireflies are recognized by females of their species by the pattern of their flashings, while male crickets are recognized by females of their species by their chirping. These are examples of ____________.
A. behavioral isolation B. habitat isolation C. temporal isolation D. mechanical isolation
Which of the following structures and functions is not associated with plasma proteins in a mammal?
a. pH buffering b. Oxygen transport c. Osmotic balance d. Clotting agent e. Antibody