Which is the main material of cell membranes?

a. lipids
b. proteins
c. phospholipids
d. triglycerides
e. fatty acids


C

Biology & Microbiology

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Most golden algae are

a. unicellular and autotrophic. b. unicellular and heterotrophic. c. colonial and autotrophic. d. colonial and heterotrophic. e. multicellular and heterotrophic.

Biology & Microbiology

Which is an example of a SNP? (Select all that apply.)

A) A single base near the neurofibromatosis gene can be a G or a T; phenotype is not affected. B) A single base change in the gene for ? globin changes an amino acid and results in sickle cell anemia. C) Individuals with Huntington disease have more trinucleotide repeats in the coding region of the HD gene than normal individuals. D) The most common cystic fibrosis allele has a deletion of three base pairs in the coding region of the CFTR gene.

Biology & Microbiology

Gel electrophoresis separates DNA fragments according to their ________

A) length B) charge C) polarity D) base sequences

Biology & Microbiology

Which of the following genes would be a not be good candidate to be used as a reporter gene in plants:

A) An alpha amylase gene from frogs B) An Alcohol Dehydrogenase (ADH) gene from human. C) A gene encoding a protein involved in routine photosynthesis. D) All of the above

Biology & Microbiology