One of the earliest evolutionary adaptations that helps plants to retain water in a terrestrial environment is ______________
A. the leaf
B. the xylem
C. the phloem
D. the root
E. the cuticle
E
You might also like to view...
Answer the following statements true (T) or false (F)
1. The type of cellular response that is caused by a given signaling molecule depends on the type of cell responding to the signal. 2. Apoptosis can occur via both intrinsic and extrinsic pathways. 3. Apoptosis is necessary in humans in order to eliminate cells infected by viruses, cells that are worn out, and those that have the potential to cause cancer. 4. Ligands that promote cell death are typically produced on the surface of cells of the immune system that recognize abnormal cells and target them for destruction.
Uracil is found in ___________
a. both DNA and RNA b. only in RNA c. only in DNA
None of the nocardioform actinomycetes are pathogenic to humans.
Answer the following statement true (T) or false (F)
_________ is the primary enzyme in genomic replication for Proteus vulgaris.
a) DNA polymerase III b) RNA polymerase holoenzyme c) DNA ligase d) RNA polymerase II