Cell membranes are asymmetrical. which of the following statements is the most likely explanation for the membrane's asymmetrical nature a. because the cell membrane forms a border between one cell and another in tightly packed tissues such as epithelium, the membrane must be asymmetrical b. because cell membranes communicate signals from one organism to another, the cell membranes must be asymmetrical. c. the two sides of a cell membrane face different environments and carry out different functions. d. proteins only function on the cytoplasmic side of the cell membrane, which results in the membranes asymmetrical nature. e. the chemical constitution of the inner and outer layer of the cell membrane is predetermined by genes.

On a recent expedition to a remote region of northern canada, scientists uncovered skeletal remains from about 100,000 years ago. surprisingly, all the skeletal remains, which included many species from differing biological families and spanned about two thousand years, showed evidence of experiencing temperatures in excess of 1000 degrees fahrenheit (or 538 degrees celsius). which of the following, if true, best explains the apparent paradox between the cold environment and the evidence of the bones experiencing hot temperatures? (a) chemical changes that naturally occur during the process of decay in only one north canadian species produce the same evidence of the species' skeletons being exposed to hot temperatures as the expedition scientists found. (b) a little over 103,000 years ago, a large fire is known to have occurred in northern canada. (c) strong evidence exists that as early as 70,000 years ago, homo sapiens around the world relied heavily on fire to cook animals. (d) in the same expedition and in roughly the same layer of excavation, scientists found rudimentary wood cutting and hunting tools used by early humans.

Suppose you use three different scale to weigh a bag of organges. one scale says the nag weighs 2.1 lb, and third says it weighs 2.1 lb. the actual weight of the bag of organges is 2.153 lb. which of the following best decribes these results?

Awolf pack hunts, kills, and feeds on a moose. in this interactions, the moose is a?