Which of the following is incorrectly paired with its structure and function?
a. sclerenchyma supporting cells with thick secondary walls
b. periderm protective coat of woody stems and roots
c. pericycle waterproof ring of cells surrounding the central stele in roots
d. mesophyll parenchyma cells functioning in photosynthesis in leaves
e. ground meristem primary meristem that produces the ground tissue system
Answer: c. pericycle waterproof ring of cells surrounding the central stele in roots
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The site at which replication of DNA starts in bacterial cells is known as the ________ of ________.
Fill in the blank(s) with the appropriate word(s).
In a family, both parents have freckles and widow's peak. Both of these traits are dominant: F = freckles, W = widow's peak
What is the correct phenotypic ratio of the next generation if the parents were heterozygous? The order of the genotypes is: freckled with widow's peak; freckled, straight hairline; no freckles with widow's peak; no freckles, straight hairline. A) 9:3:1:1 B) 9:3:3:1 C) 9:1:1:3 D) 1:3:3:9
What effects would a tumor that caused chronic secretion of renin expected to have? (Select all that apply.)
a. Elevated plasma concentration of angiotensin I b. Elevated blood pressure c. Lower aldosterone levels d. Increased water and salt reabsorption by the nephron
A patient has pneumonia. Gram-negative rods are cultured on nutrient agar from a sputum sample. The etiology is
A) Burkholderia pseudomallei. B) Chlamydophila psittaci. C) Haemophilus influenzae. D) Legionella pneumophila. E) Staphylococcus aureus.