Ricin is

a. a substance found in castor bean seeds.
b. a polysaccharide extracted from rice.
c. an ingredient in many paints and cosmetics.
d. a protein that inactivates ribosomes.
e. a substance found in castor bean seeds and
a protein that inactivates ribosomes.


E

Biology & Microbiology

You might also like to view...

Which hormones counteract each other in regulating calcium homeostasis?

A. antidiuretic hormone and aldosterone B. atrial natriuretic peptide and aldosterone C. parathyroid hormone and vitamin D (1,25 dihydroxyvitamin D) D. antidiuretic hormone and parathyroid hormone E. antidiuretic hormone and vitamin D (1,25 dihydroxyvitamin D)

Biology & Microbiology

An "S" shaped curve is characteristic of logistic population growth

Indicate whether the statement is true or false.

Biology & Microbiology

What factors contribute to genetic variation in populations?

What will be an ideal response?

Biology & Microbiology

How far are most leaf cells from a xylem vein?

a. 2.0 centimetres b. 1.0 centimetre c. 0.5 millimetres d. 50 micrometres

Biology & Microbiology