Choose the One Most Appropriate Answer for Each

question 51

Multiple Choice

Choose the one most appropriate answer for each.
-meristems

• A)gives rise to the outermost layer during secondary growth in older stems
• B)transfer sugars into sieve elements
• C)vascular tissue in the root
• D)living cells that conduct sugars and other organic solutes
• E)a layer of specialized parenchyma one or two cells thick in the vascular cylinder that gives rise to lateral roots
• F)clusters of strands containing xylem, phloem, and vascular cambium
• G)substance in xylem cells that give support to upright stems
• H)cells that support soft tissues in fruits and toughen seed coats and nut shells
• I)the principal photosynthetic region of a leaf
• J)regions of undifferentiated cells that can divide rapidly
• K)bottom layer of photosynthetic parenchyma in a leaf with large air spaces between the cells

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Definitions:

FADH2

A redox cofactor involved in cellular respiration, acting as a carrier of electrons to the electron transport chain.

Alcoholic Fermentation

A biological process by which sugars such as glucose, fructose, and sucrose are converted by yeast or bacteria into cellular energy, producing ethanol and carbon dioxide as side products.

Acetaldehyde

A volatile, flammable, and colorless liquid compound, which is a common intermediate in the synthesis of various chemicals and a byproduct of alcohol metabolism.

NADH

Nicotinamide adenine dinucleotide (NADH) is a coenzyme found in all living cells, involved in redox reactions, carrying electrons from one reaction to another.