Which structure gives strength and rigidity to a plant cell? A. nucleus B. chloroplast C. mitochondrion D. cell wall

How do punnet squares allow you to predict how traits are passed from one generation to the next?

How many chromosomes are found in one of the cells in your hand

How does caffeine cause muscle cramping?

3. How is type B red blood cell different from a type A red blood cell

Which of the following is a major way in which oceans contribute to weather systems? A. Ocean water has high salinity. B. Oceans transfer energy from the Sun. C. Most volcanic activity occurs in the ocean. D. Oceans have high levels of biodiversity.

2 cycles most closely related in their role in sustaining life

Which statement explains the difference between multiple alleles and polygenic inheritance? A. Multiple allele means more than one gene contributes to the phenotype and polygenic inheritance means more than two forms of the same gene in the

Select all that apply. Which of the following are characteristics of Cnidaria? radial symmetry acoelomates bilateral symmetry coelomates asexual reproduction sexual reproduction

Which of the following correctly arranges the planets by the size of their diameter? A) Uranus < Neptune < Mercury < Earth B) Earth < Mercury < Neptune < Uranus C) Mercury < Earth < Saturn < Jupiter D) Jupiter < Saturn < Earth < Mercury

How does ultra radiation cause skin cancer