Alveoli are surrounded by pulmonary capillaries
Indicate whether the statement is true or false.
T
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Based on the phylogenetic tree shown, to which of the following groups listed below is a bird most closely related?
A. turtle and snake B. human C. snake only D. frog E. turtle only
Which of the following affect(s) predator–prey
interactions? a. prey reproductive rate b. presence of an alternative predator or prey species c. predator response to prey density d. predator reproductive rate e. all of these
DNA-binding proteins exert control by binding DNA at specific sequences. Describe how DNA and protein interact at the molecular level
Are proteins able to identify specific DNA sequences, or do they bind to all regions with equal frequency? What motifs are commonly found in DNA-binding proteins?
Answer the following questions true (T) or false (F)
1. Sponges were the earliest animals to evolve true tissues. 2. Asymmetry refers to arrangement of body parts evenly around a central point. 3. Platyhelminthes is the first phylum to possess a coelom.