Animal species inhabiting edges of habitat patches usually require two or more habitat types within their home range or territory
Indicate whether the statement is true or false
TRUE
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In human development, the blastocyst, which is a hollow sphere of developing cells, implants in the uterine wall approximately 5 to 6 days after fertilization
A. true B. false
Stem cells ____
a. have the property of self-renewal by division b. are the least likely to give rise to cancer c. do not have the ability to divide d. are immature cells that become nerve tissue susceptible to cancer e. are found only in cancerous tumors
One possible use of transgenic plants is in the production of human proteins, such as vaccines. Which of the following is a possible hindrance that must be overcome?
A) prevention of transmission of plant allergens to the vaccine recipients B) prevention of vaccine-containing plants being consumed by insects C) use of plant cells to translate non-plant-derived mRNA D) inability of the human digestive system to accept plant-derived protein
What does the directed-pollination hypothesis suggest?
A. Plants are only directly pollinated when other plants of the same species are nearby. B. Plants that self-pollinate are directed (triggered) to do so by the absence of nearby plants of their species. C. Natural selection has favored flower traits (scent, shape, color) that attract pollinating animals. D. Pollination is a process that is directed (triggered) by key plant hormones.