In some plants, the direction of growth changes in response to contact with an object. This is called __________.

Fill in the blank(s) with the appropriate word(s).


thigmotropism

Biology & Microbiology

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The milk of goats has been genetically modified to produce human antithrombin, a protein with anticoagulant properties. How did the recombinant plasmid containing the human antithrombin gene get into the goats?

A. The goats ingested bacterial pellets containing the recombinant plasmid, the DNA then integrated into their cells. B. The recombinant plasmid was injected into mammary cells. C. The recombinant plasmid was put into a goat oocyte, which was in turn fertilized and implanted into a surrogate goat mother. D. The recombinant plasmid was put into a viral vector; the virus then infected the goat cells. E. The goat cells were treated with chemical agents such as calcium chloride, which made them competent to take up DNA.

Biology & Microbiology

Endotherms can sustain a higher level of physical activity for longer periods of time than ectotherms

Indicate whether the statement is true or false

Biology & Microbiology

Which organ isn't able to be transplanted from a donor to a recipient?

A) a kidney B) a heart C) a liver D) a brain

Biology & Microbiology

Scales and paired fins first evolved in __________fishes.

Fill in the blank(s) with the appropriate word(s).

Biology & Microbiology