For the monoclinic system shown below, draw in the crystal direction: [112]  

Which statement below is evidence that all tetrapods shared a single common ancestor? All tetrapods live partly in water and partly on land. All tetrapods are warm-blooded. All tetrapod limbs consist of rearranged fish fin rays. All tetrapod limbs have a common pattern of one bone, two bones, many bones, then digits.

Platinum (Pt) has the FCC crystal structure, an atomic radius of 0.1387 nm, and an atomic weight of 195.08 g/mol. What is its theoretical density?

The function of adenylyl cyclase is to:

Examination of the fossils of Archaeopteryx reveals that, in common with extant birds, it had A) a long tail containing vertebrae. B) feathers. C) teeth. D) Three of the options listed are correct. E) Two of the options listed are correct.  

Which structure of the amniotic egg most closely surrounds the embryo? A) the chorion B) the yolk sac C) the allantois D) the amnion

What products of light reactions of photosynthesis are used in the Calvin cycle?

One way to generate acetyl-CoA is to convert pyruvate into acetyl-CoA by stripping off a CO 2 molecule. The removal of CO 2 is referred to as what type of reaction?

Mammals and birds eat more often than reptiles. Which of the following traits shared by mammals and birds best explains this habit? A) endothermy B) ectothermy C) amniotic egg D) terrestrial habitat  

All of the following belong to the lobe-fin clade, except A) chondrichthyans. B) Australian lungfishes. C) African lungfishes. D) coelacanths. E) tetrapods.