The malarial stage infecting red blood cells of humans are the
A. merozoites
B. sporozoites
C. saprophytes
D. gametocytes
E. neophytes
A. merozoites
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Which of the following describes the sequence of events that might occur in a long-day plant when a stem begins to produce flower parts?
A. CONSTANS (CO) protein, flowering gene (FT), messenger RNA, phloem transport to the meristem B. flowering gene (FT), CONSTANS (CO) protein, messenger RNA, phloem transport to the meristem C. messenger RNA, phloem transport to the meristem, CONSTANS (CO) protein, flowering gene (FT) D. messenger RNA, phloem transport to the meristem, CONSTANS (CO) protein, flowering gene (FT), phloem transport to the meristem E. phloem transport to the meristem, CONSTANS (CO) protein, flowering gene (FT), messenger RNA
Crab spiders can be found sitting on top of flowers in fields. They are easily visible on warm
sunny days. This is an example of an organism’s __________.
a. microhabitat b. macrohabitat c. niche d. life zone
Intracytoplasmic sperm injection is one technology for correcting which fertility issue?
a. A woman cannot produce viable eggs. b. A man makes sperm, but does not ejaculate properly or does not ejaculate enough sperm to allow fertilization. c. A woman has normal eggs but they cannot be fertilized. d. A man has non-viable sperm. e. A woman can produce eggs and they can go through fertilization, but none of the eggs can implant properly.
Following S phase, a human cell would have how many pairs of sister chromatids and individual DNA molecules?
A. 23 pairs of sister chromatids and 92 individual DNA molecules B. 46 pairs of sister chromatids and 46 individual DNA molecules C. 46 pairs of sister chromatids and 184 individual DNA molecules D. 46 pairs of sister chromatids and 92 individual DNA molecules E. 23 pairs of sister chromatids and 46 individual DNA molecules