What structures do organisms that lack cell walls have for support

Which of the following best identifies a physical digestive process? heat formation enzyme action acid secretion peristalsis

What nutrient is a necessary component of the diet of pregnant women in order to prevent neural tube defects?/?

Plant species A has a diploid chromosome number of 12. Plant species B has a diploid number of 16. A new species, C, arises as an allopolyploid from A and B. The diploid number for species C would probably be a. 14. b. 16. c. 28. d. 56.

The area of message exchange between the neurons begins to operate faster the more a person practices a particular activity. True Or False?

The four main types of macromolecules are organic. what does organic mean in this context?

How many cell types are present in your groups set of organisms?

Which of the following is the functional unit of a myofibril? a. sarcomere b. myofilament c. sarcolemma d. endomysium

20. In certain species of summer squash, fruit color is determined by two interacting genes. A dominant allele, W, determines white color, and a recessive allele (w) allows the fruit to be colored.

When you look out the window, you can see constantly moving air. air is cycled in order to reach equilibrium. B) since these change the density of air and we know the air flows from the region of high density to the region of low density.

What effects do deforestation have on the animals?