In the 1600's, robert hooke, and english scientist, used a crude microscope to examine bits of cork. cork is derived from the bark layer of certain trees. upon seeing the cork under the microscope, hooke named the spaces within the cork 'cells', because they looked like empty rooms of a monastery. although he coined the term cell, an ironic feature of cork is that it is dead plant material. knowing this, what feature of cells would robert hooke not have been able to observe under the microscope while looking at cork? a) he would not have been able to estimate the size of cork cells. b) he would not have been able to observe the cell walls of the cork. c) he would not be able to observe cork cells dividing to form new cells. d) he would not have been able to observe the rectangular nature of plant cells.

In a hypothetical breed of dogs, coat color is controlled by two genes. there are six different coat colors in this breed: black, brown, cream, gray, silver, and tan. consider the following crosses.cross 1: black females from a lineage of all black dogs are crossed with brown males from a lineage of all brown dogs. f1 males and females are all black. when f1 are intercrossed, f2 males and females are black or brown.cross 2: black females from a lineage of all black dogs are crossed with tan males from a lineage where all males are tan and all females are cream. f1 males are black, f1 females are gray. when f1 are intercrossed, f2 males and females are black, brown, gray, or tan.cross 3: silver females from a lineage where all females are silver and all males are gray are crossed with brown males from a lineage of all brown dogs. f1 males and females are all gray. when f1 are intercrossed, f2 males are black, brown, gray, or tan, f2 females are cream, gray, silver, or tan.select the correct statements regarding the mode of inheritance of the coat color genes.a) both genes are x-linked.b) both genes are autosomal.c) one of the genes modifies the expression of the other gene.d) each gene has an additive effect on the intensity of coat color.e) each gene independently specifies three colors.f) one of the genes is autosomal, and the other is x-linked.

When does the circulatory system work with the respiratory system? a. during blood cell formation b. during cellular respiration c. during intestinal digestion d. during a viral infection

Resperation is a way to release carbon back into the atmosphere