Why is it difficult for scientist to find fossils from the pre-Cambrian period

Seeds consist of an embryonic plant, stored food, and a seed coat. True False

Which of the following processes includes all the others? a. osmosis b. diffusion of a solute across a membrane c. passive transport d. transport of an ion down its electrochemical gradient

Kathy is a big fan of horror movies. Although she was initially too afraid to watch them alone, she soon found that she could not get enough of them. Kathy began to watch television shows that were more violent as well.

What would both parents' alleles need to look like for brown eyed parents to have a blue eyed child? * A. Both parents would have to be homozygous recessive B. Both parents would have to be homozygous dominant C.

If facial dimples are a dominant genotype, shouldn't more people have them?

If gout in the joint explain how it has any connection to the urinary system

Varying degrees of contractive force in a skeletal muscle are generated through the process of what?

What are cells with a nucleus called? eukaryotic cells nuclear cells prokaryotic cells membrane cells

What is the likeness that the child will have wavy hair?

Explain how the following modifications to cell structure could increase efficiency of materials exchange between the cell and its environment: The cell is thin and flat The cell has extensions such as cilia on its membrane The cell uses vesicles to