The first culture of human cells was begun by George and Martha Gey of Johns Hopkins University in 1951). The cells were obtained from a malignant tumor and named ______ cells after the donor, _________.
A) Roberts, John Roberts
B) Hela, Herbert Lane
C) MaLe, Martin Lewis
D) Hela, Henrietta Lacks
E) HeLa Helen Lassiter
Ans: D) Hela, Henrietta Lacks
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Which cell organelle functions to transport materials from the endoplasmic reticulum throughout the cell?
a) ribosome b) Golgi apparatus c) lysosome d) vacuole
Within a community, a dominant species may appropriate a disproportionate share of available resources, thus ____
other species. a. increasing competition with b. increasing disease transmission with c. undergrazing d. outcompeting e. decreasing disease transmission
What term refers to seasonal changes in the relative lengths of night and day?
A) photoperiod B) circadian rhythm C) gravitropism D) phototropism
In addition to the genital tract, various strains of Chlamydia trachomatis can infect which of the following?
A) lymph nodes B) the lungs C) the conjunctiva D) lymph nodes and conjunctiva E) lymph nodes, lungs, and conjunctiva