When a mouse cell and a human cell are fused, the membrane proteins of the two cells become uniformly distributed over the surface of the hybrid cell. This occurs because
A) many proteins can move around within the bilayer.
B) proteins are asymmetrically distributed within the membrane.
C) all proteins are anchored within the membrane.
D) different membranes contain different proteins.
E) all proteins in the plasma membrane come from a membrane other than the human or the mouse.
A
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Which of these is not part of loose connective tissue?
A. collagen B. elastin C. reticulin D. chondroitin E. adipose cells
In modern terms, Mendel's law of independent assortment states that ________
a. genes are sorted into gametes independently of other genes b. alleles are separated from each other during meiosis c. the probability of two independent events occurring together is the product of the individual probabilities d. alleles are sorted into the same gamete during meiosis
Which are endocrine organs? (Check all that apply.)
_____ adenohypophysis _____ adrenal gland _____ cochlea _____ hypothalamus _____ ileum _____ lymph node _____ neurohypophysis _____ ovary _____ pancreas _____ pineal gland _____ salivary gland _____ sebaceous gland _____ spleen _____ testis _____ thyroid gland
The forelimb of a bat and the forelimb of a bird are examples of structures.
A. homeotic B. analogous C. homologous D. vestigial E. heterologous