Most triploid zygotes probably arise from ____
a. incomplete meiosis I
b. incomplete meiosis II
c. incomplete mitosis
d. nondisjunction
e. dispermy
e
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Why do plants use cotransporters instead of ion channels to transfer anions into cells?
A) Cotransporters are able to transfer anions against the membrane potential gradient, but ion channels cannot. B) Cotransporters can transfer ions across cell membranes, but ion channels cannot transport ions across cell membranes. C) Cotransporters are able to transfer anions against the proton gradient, but ion channels cannot. D) Anions are too bulky to be transported by ion channels.
The DNA encoding siRNA is not normally found in the nucleus
Indicate whether the statement is true or false.
What is pain? Why does it exist?
What will be an ideal response?
The driving force behind the evolution of the human mind has been primarily due to pressures stemming from
A. navigating a larger territory. B. interacting with other minds. C. tracking resources scattered across space and time. D. the last Ice Age