Classification of living things takes into consideration all of the following except
a. number of cells.
b. presence of cell membranes.
c. presence of a nucleus.
d. mode of nutrition.

What are some possible short and long term medical concerns for crew members on longer space exploration trips

Which of the following statements is true? a. there are more chromosomes in an organism than there are genes. b. there are more genes in an organism that there are chemical bases. c. dna is made of sugar, phosphate, and carbon. d. genes are found in specific locations on a chromosome.

As the pea seeds respire, the level of coloured liquid in the left hand part of the capillary tube rises. by referring to what is happening in the apparatus, explain why the level of liquid changes