how many sperm cells does a male produce in a day

If u increase the surfaces area of a rock, how will it affect the rate at which it weathers? A.) It will weather more quickly B.) It will have no effect because surface area is not a factor in weather C.) It will weather more slowly D.

Endosymbiosis refers to the process in which prokaryotes live within eukaryote hosts. The endosymbiosis model of mitochondria and chloroplast evolution states that mitochondria and chloroplasts are derived from prokaryotes that were engulfed by

How large is the average ostrich egg

When true-breeding mice with brown fur and short tails (BBtt) were crossed to truebreeding mice with white fur and long tails (bbTT), all F1 offspring had brown fur and long tails. The F1 offspring were crossed to mice with white fur and short tails.

Which of the following is a characteristic that could be applied to both living and nonliving things? composed of cells that maintain homeostasis carry out metabolic reactions transfer genetic information to offspring contain mostly carbon,

Which of the following is the primary function of proteins? A) transmits hereditary information from one generation to the next B) stored, concentrated energy C) builds and repairs cells and tissues in the body D) cushions and insulates organs

Which of the following best describes cell communication processes that are present in bacteria, yeast, and multicellular organisms?

During which phase of mitosis do the chromatids become chromosomes? a. telophase. b. anaphase. c. prophase. d. metaphase

How did the development of the hela cell line affect society?

The human body is composed of cells, organs, organ system and tissues. How are these organized