In which layer of the plant leaves does photosynthesis take place?
a. mesophyll
b. xylem
c. phloem
d. epidermis
a. mesophyll
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The rate at which evolution is occurring cannot be estimated by:
A. studying comparative anatomy. B. inferring that apes are related to humans. C. measuring the degree of difference in genetic coding. D. interpretation of the fossil record.
The human placenta is formed by the interaction of uterine tissue and what extraembryonic tissue?
A. amnion B. embrion C. chorion D. yolk sac E. allantois
Put the following events of elongation in prokaryotic translation in chronological order
1. Binding of mRNA with small ribosomal subunit 2. Recognition of initiation codon 3. Complementary base pairing between initiator codon and anticodon of initiator tRNA 4. Base pairing of the mRNA codon following the initiator codon with its complementary tRNA 5. Attachment of the large subunit A) 1, 2, 3, 4, 5 B) 2, 1, 4, 3, 5 C) 5, 4, 3, 2, 1 D) 1, 2, 3, 5, 4
The structure in which meiosis occurs (which results in the formation of eggs) is the
A. cervix. B. ovary. C. vagina. D. uterus.