Which structure of a diatom is rich in silicon?

a. flagellum

b. nucleus

c. cell wall

d. eyespot

What common finding can the nurse identify in most children with symptomatic cardiac malformations?

A strand of tRNA (anticodon) has a sequence of Adenine, Uracil, Guanine. What codon in mRNA attracts this strand of tRNA? A Adenine, Uracil, Guanine

When HIV initially infects a cell, the viral RNA is converted into DNA and then the newly formed DNA is integrated into the host cell's own DNA. During this time, the infected person might feel flu-like symptoms.

Is a superficial fungal infection found on the head. Tinea cruris Tinea capitis Tinea pedis Tinea corporis

Which labeled area on the map is known as the "demilitarized zone" (dmz) ?

What happens to Earth when it is farthest from the sun? It moves fastest. It stops rotating. It moves slowest. It stops revolving.

What are two different habitats in a prairie ecosystem and name one organism found in each habitat.

Which level on the energy pyramid has the third most energy? A. primary producers B. primary consumers C. secondary consumers D. tertiary consumers

How do pH affect the stability of double-stranded nucleic acid?

What is the first step in the scientific process