Which cell type produces heparin and histamine to promote inflammation in the connective tissues when necessary?

A) Fibroblasts
B) Chondroblasts
C) Osteoblasts
D) Mast cells
E) Erythrocytes

Secondary succession occurs where is there is bare rock.

The thymus is responsible for the maturation of B-lymphocytes.

Which of the following tissues is correctly matched with a function?

A) epithelial-storage of fat
B) connective-capillary lining
C) muscle-protection from pathogens
D) nervous-integration of data
E) connective-promotes electrical flow through the heart

The vertebrate fish group that most likely gave rise to the tetrapods is the ____.

A) ray-finned fishes
B) cartilaginous fishes
C) hagfishes
D) lampreys
E) lobe-finned fishes

Which type of reflex operates independently of the CNS?

A) Distal reflex
B) Voluntary reflex
C) Local reflex
D) Conscious reflex

What is the acrosomal reaction?

A) The formation of the acrosome in the epididymis
B) The activation of enzymes for action on the surface of the oocyte
C) The release of ADP from the mitochondria on the midpiece
D) The release of prostatic fluid to produce the semen

In Down syndrome, the Dart gene causes mental impairment by increasing the levels of pyrimidines in the blood.

At one time, biologists thought that fungi were merely forms of plants that had lost their chlorophyll and evolved saprotrophy to obtain food. Which of the following is a reason why fungi are no longer classified with the plants?

A) Fungal cell walls contain chitin rather than cellulose.
B) Fungi digest their food internally.
C) All fungi have flagella at some stage in their life cycle and plants do not.
D) Plants are multicellular and fungi are unicellular.
E) Plants store glycogen, while fungi store starch.

Embryonic plants are nourished by nutrients in endosperm and the ____, but not by nutrients in fruits.

A) cotyledons
B) seed coat
C) germ
D) bran
E) ovary wall