During this stage of mitosis, the chromosomes become attached to the spindle at their kinetochores.
A. Metaphase
B. Prophase
C. Prometaphase
D. Telophase
E. Anaphase
Answer: C
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The proteins of bacteria that are involved in the movement of small molecules into the cell are called
A. transport proteins. B. permeases. C. carriers. D. peptidases. E. transport proteins, permeases, AND carriers.
Which of the following is a hormone produced by specialized cells in the heart in response to high
blood pressure?
a. atrial natriuretic factor b. renin c. aldosterone d. antidiuretic hormone e. angiotensin
Answer the following statements true (T) or false (F)
1.Gymnosperms are the flowering plants. 2.A seed is an embryo and its food supply is inside a seed coat. 3.The root and shoot apical meristems form at the same time in the plant embryo. 4.Seedless watermelons come from seeds that are triploid and therefore the seeds do not fully develop and form simple soft hulls that are easy to chew. 5.Coconuts are fruits containing seeds that are usually wind dispersed.
What percentage of the placenta is of fetal vs. maternal origin?
A. 20% vs. 80% B. 33% vs. 66% C. 50% vs. 50% D. 75% vs. 25% E. 80% vs. 20%