Practice Questions

TLS Online TPP Program

#Question id: 2595

In a scratch wound assay, cells are treated with inhibitors of Rho kinase. What would be observed?

#Unit 2. Cellular Organization

The cells completely close the scratch, and only lamellipodia and filapodia are seen with actin staining.
The distance the cells migrate into the scratch is small, and actin staining reveals stress fibers, lamellipodia, and filapodia.
The cells are stimulated to undergo mitosis.
The cells migrate into the scratch, but no stress fibers can be observed with actin staining.

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TLS Online TPP Program

#Question id: 13210

#Unit 6. System Physiology – Plant

In Cohesion–Tension Theory, the pressure gradients needed to move water through the xylem could result from

TLS Online TPP Program

#Question id: 13211

#Unit 6. System Physiology – Plant

The upward movement of water and solute against gravitational force from root to aerial parts of the plant through xylem is called

TLS Online TPP Program

#Question id: 13212

#Unit 6. System Physiology – Plant

The water at the top of a tree develops a large tension (a negative hydrostatic pressure), and this tension pulls water through the xylem this mechanism is called ,

TLS Online TPP Program

#Question id: 13213

#Unit 6. System Physiology – Plant

The cuticle covering the leaf is nearly impermeable to water, then how do most leaf transpiration

TLS Online TPP Program

#Question id: 13214

#Unit 6. System Physiology – Plant

The stomata will open less or even remain closed on a sunny morning when

TLS Online TPP Program

#Question id: 13215

#Unit 6. System Physiology – Plant

KCl solutions separated by a membrane in The K+ and Cl– ions will permeate the membrane independently as they diffuse down their respective gradients of electrochemical potential, In biological systems, membranes are usually more permeable to K+ than to Cl–. Therefore, K+ will diffuse out of the cell faster than Cl–, causing