Indicate what the researcher did incorrectly in this procedure. A researcher wanted to make 1 L of a 2M sucrose solution. They calculated that 2 moles of sucrose (342 g per mole) weighs 684 grams. They carefully measured 1 L of water and poured it into a beaker (2 L capacity), added a stir bar, and placed the beaker on a magnetic stir plate. They then gradually added the 684 g of sucrose to the beaker and waited for it to dissolve

Which is an advantage of having memory cells when a pathogen is encountered for a second time. a) the memory cells are what proliferate into clones of cells in response to the binding of an antigen. b) memory cells are vital to the primary immune response in that they immediately recognize pathogens even at the first encounter. c) memory cells are essentially effector cells that are short lived and attack antigens even without having a receptor specific to that antigen. d) it ensures that more lymphocytes with a receptor specific to a particular antigen will be present than in a host that had never encountered that pathogen.

In tomato plants, mendel found that the allele for smooth seeds (s) is dominant, while the allele for wrinkled seeds (s) is recessive. which of these punnett squares shows crosses between two plants heterozygous for smooth seeds? i need this to be answered as soon as ! sry the picture is bad quality

Which of the following is the earliest era of earth's geologic time scale? cenozoic mesozoic precambrian paleozoic