Veins that carry oxygenated blood from the lungs to the heart.
2) System that consists of both the cardiovascular and the lymphatic systems.
3) The site where certain lymphocytes mature, enabling them to fight specific disease-causing organisms.
4) This simple practice will reduce your chance of heart disease and stroke.
5) Vessels that carry blood back to the heart from the body.
A) Jugular veins
B) Pulmonary veins
C) Circulatory
D) Capillaries
E) Spleen
F) Thymus
G) Tonsils
H) Aorta
I) Veins
J) Exercise
Ans:
1. B) Pulmonary veins
2. C) Circulatory
3. F) Thymus
4. J) Exercise
5. I) Veins
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A. to build a strand of DNA using DNA as a template B. to build a strand of DNA using a polypeptide as a template C. to build a strand of mRNA using DNA as a template D. to build a strand of mRNA using mRNA as a template E. to build a polypeptide using DNA as a template
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Indicate whether the statement is true or false.
Cultivated wheat is descended from three distinct species, each with a diploid set of 14 chromosomes. Thus, it is
A) an allotriploid with 21 chromosomes. B) an allotriploid with 42 chromosomes. C) an allohexaploid with 84 chromosomes. D) an allohexaploid with 42 chromosomes. E) an autotetraploid with 28 chromosomes.
Choose the mRNA sequence that is complementary to the gene sequence GGACTTACG.
A. CCTGAATGC B. AACUGGCUA C. GGTCAATCG D. CCUGAAUGC