What structure gives animal cells a defined structure?

a. cell membrane

b. cell wall

c. proteins

d. cortex

How does pollination take place in parts of the world where there is no pollination

Why is the electron transport chain an important step in aerobic respiration

James is 6 feet tall. Leroy is 5 feet 2 inches tall. There are surely many individual differences between James and Leroy, but sociological research predicts that based on height alone, James is likely to have:

Compare the structure and function of carbohydrates, lipids, proteins, and nucleic acids

In deep ecology, through what means is happiness gained

Your alien friend from planet Xenon is visiting and wants to learn how to breed pea plants. You show your friend a recent batch of pea plants with purple flowers that you grew by crossing plants that had purple flowers with plants that had white

The green stem ant has three (autosome) chromosomes. During meiosis, chromosome 1 and 3 separate normally, but chromosome 2 homologs do not separate during meiosis I. Meiosis II happens normally. What will the resulting cells of meiosis look like?

A population is growing at a rate of 2,4,8, 16, 32. Which type of growth does this describe?

Which epithelial tissue type is most often found lining large ducts, such as those of the salivary glands or pancreas?

Evolution led to certain fishes, such as lung fishes to adapt to terrestrial mode of life. These fishes were the ancestors of modern amphibians. Which evolutionary mechanism is represented by this example?