What is the genetic code?
a. all of our genes collectively
b. all of our base-pairs collectively
c. the genetic “words” that code for amino
acids
d. the genes on DNA that code for proteins
e. more than one of these describes the
genetic code
C
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Prior to ovulation, the primary steroid hormone secreted by the growing follicle is _____
A) luteinizing hormone (LH) B) follicle-stimulating hormone (FSH) C) inhibin D) gonadotropin-releasing hormone (GnRH) E) estradiol
Transcription in eukaryotes occurs in the
A) RNA polymerase. B) endoplasmic reticulum. C) cytoplasm. D) nucleus.
Epithelial cells form tightly cohering sheets whereas erythrocytes occur as single cells. What type of integral proteins would you expect to reside in the plasma membrane of an epithelial cell that might be absent from that of an erythrocyte?
A. receptor proteins B. skeletal proteins such as microtubules and microfilaments C. single pass integral membrane proteins D. proteins involved in cell-cell adhesion or cell-cell communication E. multiple pass integral membrane proteins.
The chemical signal for slime mold amoebas to aggregate is:
a. cAMP. c. cGMP. b. cCMP. d. cTMP.