In muscle fibers, ___________ motors move along actin filaments.

a) kinesin
b) dyein
c) combustion
d) myosin


Ans: d) myosin

Biology & Microbiology

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Most cnidarians are known to produce toxins. In fact, it has been claimed that one particular species produces the most deadly of all toxins on the planet. What feature of this group most likely evolved simultaneously with the evolution of these toxins?

A) the medusa body form B) asexual reproduction C) a slow-moving or sessile lifestyle in the adult D) diploblastic design E) bilateral symmetry in the mobile larval forms

Biology & Microbiology

Draw a duplicated chromosome. Now, label each part of the chromosome with both its function and its

identity. What will be an ideal response?

Biology & Microbiology

The element carbon has 6 protons and 6 neutrons in its nucleus. Which of the following represents the carbon-14 isotope?

a. 6 protons, 8 neutrons b. 6 protons, 7 neutrons c. 7 protons, 6 neutrons d. 8 protons, 6 neutrons

Biology & Microbiology

Sometimes a fertilized egg, after a few of rounds of division, separates into two embryos which results in identical, or ____ , twins

Fill in the blank with the appropriate word.

Biology & Microbiology