The individual credited with first observing the cell nucleus was ____
a. Anton van Leeuwenhoek
b. Robert Brown
c. Matthias Schleiden
d. Theodor Schwann
e. Rudolf Virchow
B
You might also like to view...
In examining a multicellular protist, you notice that it uses pseudopods to engulf its food, that it reproduces asexually by mitosis, and that it has multiple nuclei
These data allow you to infer that the species belongs to which of the following protist groups? A) Euglenida B) Diatoms C) Foraminifera D) Diplomonadida E) Parabasalida
__________, the first vertebrates able to complete their life cycle on dry land, have water conserving
skin and kidneys, and amniote eggs. Fill in the blank(s) with the appropriate word(s).
Peptide bonds form between
A. two amino groups. B. two carboxyl groups. C. one carboxyl group and one R group. D. one amino group and one carboxyl group. E. one R group and one amino group.
You're treating a patient who is abnormally short and find normal blood levels of growth hormone. Based on this evidence, what can you determine about the patient?
A) The patient has a tumor in the pituitary gland. B) The patient lacks a functional pituitary gland. C) The patient lacks receptors for growth hormone. D) The patient lacks a functional circulatory system.