Which of the following organisms are unable to photosynthesize?

a) Cyanobacteria
b) Euglena
c) Diatoms
d) Foraminifera
e) Dinoflagellates


Answer: d) Foraminifera

Biology & Microbiology

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Intervening, untranslated nucleotide sequences are:

a. introns. b. anticodons. c. exons. d. transcriptons. e. poly-A tail

Biology & Microbiology

Refer to Figure 13-3. The component labeled B is:


a. DNase.
b. DNA polymerase.
c. RNA primase.
d. RNA polymerase.
e. reverse transcriptase

Biology & Microbiology

While normally one secondary oocyte ruptures from an ovarian follicle at ovulation, what will be the result if two are released and both are fertilized?

A) identical twins B) single birth because only one secondary oocyte can be fertilized C) single birth because even though both may be fertilized, only one will be able to complete development D) fraternal twins

Biology & Microbiology

Persea americana is the binomial for Avocado that is included in Lauraceae. Pick the species name only for this plant.

Persea americana Avocado Lauraceae

Biology & Microbiology