What is a strong reaction to a harmless antigen?

Would each of these chromosomes in the karyotype have sister chromatids or not? 46 chromosomes

Explain why cystic fibrosis shortens life span

Which level of classification contains all the others? kingdom domain genus class

Earthquake occurs because of?

Read through the following observations. 1. Some snakes have pelvic bones that sometimes sprout protrusions called "pelvic spurs" which serve little purpose. 2.

Which of these has NOT provided evidence showing that the continents have drifted over time? O A) rocks OB) fossils OC) earthquakes OD) geologic structures

All organic molecules contain the element carbon.

Which cell part contains directions for cell growth and reproduction? A. cell wall B. plasma membrane C. nucleus D. pores

Which of the following statements are incorrect? A. Stem vascular bundles in monocots are in a ring. B. Dicot roots are fibrous in structure. C. Pollen in monocots has one opening. D. Dicots have floral parts mostly in multiples of fours and fives.

In the living world, there is a great deal of genetic variation. The genetic information of dogs differs from the genetic information of cats. The genetic information of plants differs from the genetic information of bacteria.