Which of the following accurately describes an example of how materials can move across the cell membrane through active transport?

How many copies of each chromosomes should be present in each of the 4 final haploid versions of gamete?

According to piaget, children have acquired the cognitive skill of conservation when they're able to a. understand that six ounces of liquid in a jar and six ounces in an elongated tube are equal. b. understand the viewpoint of other people. c. relate objects around them to their own needs. d. realize that the term heavy describes an object one way and the term big describes it another way. it is not b nor c. did this 2 x wrong..

What do nitrifying bacteria convert