Cell & Genetics (MS Science Bowl)

Which of the following does NOT occur in mitosis:

• DNA synthesis
•   sets of sister chromatids line up singly
•   sister chromatids separate as the centromere divides
•   spindle fibers help in the movement of chromosomes

Tags

NGSS.HS-LS1-4

In which of the following stages in the life of an average dividing cell would it spend most of its time:

• mitosis
•   interphase
•   cytokinesis
•   karyokinesis

Which of the following is a general term widely used by scientists to indicate artificial growth of cells in the laboratory:

• culture
•   monocell
•   attenuate
•   decoction

A mutant fly is observed with an antenna growing out of the abdomen, rather than the head. Which of the following gene types is most likely involved in this kind of mutation?

• Immunoglobin
•   Sensory
•   Homeotic
•   Receptor

Tags

NGSS.HS-LS3-2

The nucleolus is the primary site for the manufacture of which of the following?

• ribosomes
•   Protein
•   Lipid
•   messenger RNA

Consider a cross of a pea plant having white flowers with a pea plant having red flowers. Of 50 seedlings from this cross, 25 produce white flowers and 25 produce red flowers. If white is dominant, which of the following is the BEST description for the genetic makeup of the white flowering parent plant:

• homozygous for white flowers
•   heterozygous
•   homozygous for red flowers
•   co-dominant for white and red

Tags

NGSS.HS-LS3-1

Because DNA polymerase (read as: poh-LIM-eh-rayz) is not able to synthesize DNA in the 3 prime to the 5 prime direction, how do eukaryotes (read as: yuh-KEHR-ee-ōets) prevent loss of base pair sequences from chromosome ends?

• Mismatch repair
•   Nucleotide excision repair
•   Topoisomerase (read as: tōe-pōe-y-SOH-meh-rayz) winds up DNA ends
•   Telomerase (read as: te-LŌE-meh-rayz) adds sequence repeats

Which of the following is NOT true of the plasma membrane:

• it is made partly of lipids
•   it contains proteins imbedded in the lipid bilayer
•   it is selectively permeable
•   it is rigid and helps maintain a definite shape for the cell

Which of the following is the most specific place where the subunits of ribosomes are made in eukaryotes?

• nucleus
•   endoplasmic reticulum
•   mitochondria
•   nucleolus

Which of the following is the BEST explanation for the function of nuclear pores:

• to prevent damaging hydrogen peroxide from entering the nucleus
•   to prevent too much pressure from metabolism from building up in the nucleus
•   to allow the nucleus to sweat
•   to allow substances such as mRNA to leave the nucleus