zoologist Konrad Lorenz described, in which he took very young ducks fixes its attention on himself as first thing of young ones with which it has seen, and seeing that, there after these ducks follow him. this type of behaviour known as___

TLS Online TPP Program

#Question id: 32425

#Unit 2. Cellular Organization

Which of the following elongated protein binds along the groove of the actin filament helix?

TLS Online TPP Program

#Question id: 32426

#Unit 2. Cellular Organization

Nonmuscle cells contain several types of contractile bundles composed of:

TLS Online TPP Program

#Question id: 32427

#Unit 2. Cellular Organization

Rho kinase dependent phosphorylation leads to inactivation of:

a. MLC Phosphatase

b. MLC kinase

c. MLC

d. Rho-GTP

TLS Online TPP Program

#Question id: 32428

#Unit 2. Cellular Organization

When the incoming action potential activates a Ca²⁺ channel in the T-tubule membrane, it triggers the: 

TLS Online TPP Program

#Question id: 32429

#Unit 2. Cellular Organization

In skeletal muscle the cytoplasmic Ca2+ concentration is restored to resting levels within 30 milliseconds, allowing the:

a. Binding of tropomyosin with myosin

b. Binding of calcium with troponin C 

c. Myofibrils to relax

d. Myofibrils to contract

TLS Online TPP Program

#Question id: 32430

#Unit 2. Cellular Organization

Muscle contraction depends on two processes: 

a. Filament sliding, driven by the ATPase domain of myosin 

b. Ca²⁺ pumping, driven by the Ca²⁺-pump

c. Filament sliding, driven by the ATPase domain of actin

d. Na⁺ pumping, driven by the Na⁺- K⁺ pump