What do birds have that distinguishes them from other organisms?

a. Four-chambered hearts

c. Amniotic eggs

b. Wings

d. Feathers

What is advantage of having multiple sites in dna replication?

The nitrogenous bases cytosine and thymine are

What is the function of polar bodies? A. They nurse the egg as it leaves the follicle. B. They allow a reduction in chromosomes while preserving most of the cytoplasm for one egg. C. They orient the egg for penetration by the sperm. D.

ATP is called the energy currency of the cell because A) glucose is made of ATP. B) ATP catalyzes all metabolic reactions. C) ATP allows one organelle to be exchanged for another. D) most of the energy that drives metabolism is supplied by ATP.

How do the biotic and abiotic limiting factors of an ecosystem determine its carrying capacity?

Eubacteria and Archaebacteria can reproduce in a short amount of time. Why can this be considered a negative thing?

The catalytic efficiency of many enzymes depends on pH. Chymotrypsin shows a maximum value of kcat/KM at pH 8. Detailed analysis shows that kcat increases rapidly between pH 6 and 7 and remains constant at higher pH.

What type of bond forms between a slightly positive hydrogen atom in one molecule and a slightly negative atom in another molecule

What type of soil permeability is most desirable for agricultural land? very slow rapid moderate?

What feature of alcohol fermentation makes it more suitable for the baking process than lactic acid fermentation? A. Alcohol fermentation is a faster process than lactic acid fermentation. B.