When DNA is distributed diffusely throughout the nucleus, it is called ________. When it is organized into condensed structures, those are called ________.
A. chromatid; chromosomes
B. chromosomal; chromatins
C. chromatin; chromosomes
D. nucleolus; centrioles
E. genetic; chromatins
Answer: C
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A woman insists on an ultrasound and a maternal serum marker test to check for Trisomy 21 in her unborn child because she only wants to use non-invasive methods. Her obstetrician will
A. allow the maternal serum marker test but still recommend amniocentesis, because maternal serum markers and amniocentesis check chromosomes while ultrasound and CVS do not. B. heavily advise against this decision, because ultrasound and maternal serum markers do not check chromosomes while CVS and amniocentesis do. C. follow the procedures she wants, because ultrasound and maternal serum markers check chromosomes while CVS and amniocentesis do not. D. allow the ultrasound but still recommend CVS, because ultrasound and CVS check chromosomes while maternal serum markers and amniocentesis do not.
Jill suffers a severe cut that severs the tendon that attaches the insertion of the flexor carpi ulnaris. As a result of this injury, what action is difficult for her to perform?
A) flex her forearm B) flex her elbow C) flex her ulna D) flex and adduct her hand E) flex her shoulder
Which of the following represents horizontal acceleration of a projectile?
A. -9.81 m/s2 B. -9.81 m/s C. 0 m/s2 D. 0 m/s
Before fusion of the sacrum and coccyx, most children have 33 separate bones in the vertebral column.
Answer the following statement true (T) or false (F)