Medical Quiz

Biology Quiz

the walls of the xylem vessels are thickened by ……

A. subrin

B. cutin

C. lignin

D. cellulose

Select your answer:
         


Topics:

Cellular Components Urinalysis/ Immunology Make up Body System Interactions Hormones Common Diseases in Human Beings Physical Fitness Components Cell Theory and Microbiology DNA, RNA, Proteins Functional Anatomy in Track & Field Organization of Systems Genes and DNA The Blood Cardiovascular and Respiratory Circulatory & Respiratory Food Microbiology

Other quiz:

Biology › View

The weak bond that holds one water molecule to another water molecule is called a ___.

A. polar bond

B. covalent bond

C. hydrogen bond

D. ionic bond


Meiosis and intro to Genetics › View

Which of the following alleles is homozygous (purebred) recessive?
A. Tt
B. tt
C. TT
D. t