海洋生物包括 A: Plankton B: Nekton C: Mammals D: Benthos

海洋生物包括 A: Plankton B: Necton C: Mammals D: Benthos

All mammals have hair, but notalways evident. A: but it is not B: but it is C: but they are not D: but they are

In mammals, gluconeogenesis in the liver, kidney, and small intestine provides glucose for use by the ______, _______, and erythrocytes.

21. Birds have higher maximum lifespans than mammals (哺乳动物) and are less prone ____ death in the wild.

This is the only place of the world _____ this kind of mammals can be found. A: where B: which C: that D: what

All<br/>mammals have hair, (but not) ____ always evident. A: but<br/>it is not; B: but<br/>it is; C: but<br/>they are not; D: but<br/>they are;

The order of mammals with the largest number of species is the order ( ). A: Artyodactyla B: Lagomorpha C: Xenarthra D: Chiroptera E: Rodentia

Mammals cannot use acetyl-CoA as a precursor of glucose, because the ________________________ is irreversible and cells have no other pathway to convert acetyl-CoA to pyruvate.

This group is considered to be the most closely related to ancestral amniotes. A: mammals B: snakes C: lizards D: birds E: turtles