What action by the individual cells involved can assist processes involving cell movement such as gastrulation?

A) evagination
B) phagocytosis
C) invagination
D) transcription factors
E) microfilament growth


Answer: E

Biology & Microbiology

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Which of the following methods of genetic recombination is common to both eukaryotic and bacterial cells?

A. Crossing over B. Vertical gene transfer C. Gamete fusion D. All of the choices are correct.

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What features of meiosis allow for independent assortment of chromosomes?

A. random alignment of homologous sister chromatids on the metaphase plate B. separation of sister chromatids C. reduction of chromosome number from diploid to haploid D. both the separation of sister chromatids and the reduction of chromosome number from diploid to haploid E. All of these features allow for the independent assortment of chromosomes.

Biology & Microbiology

The bacterium Streptococcus mutans has a major role in the development of dental plaque and caries

Indicate whether the statement is true or false

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Glycoprotein spikes protruding from the outer surface of viral envelopes function as ________.

A. toxins B. cell lysis factors C. factors needed for site specific recombination D. factors that bind to host cells

Biology & Microbiology