What is the definition of energy?
A. The amount of order in a system
B. The capacity to do work
C. The movement of an object
D. Particles moving in waves through a system
Answer: B
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In 2011, clinical medical trials using _____ to replace diseased cells in the eyes of blind patients showed some
success of restoring vision.
a. bone marrow cells b. central disk cells c. nervous tissue d. embryonic stem cells e. induced pluripotent stem cells
According to the out-of-Africa hypothesis for the evolution of Homo sapiens, modern humans evolved in Africa, Asia, and Europe simultaneously.
Indicate whether the statement is true or false.
An indirect effect from ionizing radiation occurs on a _____ molecule.
a) target b) DNA c) water d) free radical
Answer the following statements true (T) or false (F)
1. If resources are increased, carrying capacity increases. 2. K-selected populations reproduce quickly. 3. Exponential growth is rare because resources are usually limiting. 4. Slow-growing oak trees are r-selected compared to dandelions.