Chapter 3 Review Q's

Pataasin ang iyong marka sa homework at exams ngayon gamit ang Quizwiz!

How many "letters" of an RNA molecule, in sequence, does it take to provide the code for a single amino acid?

3 (code signals the use of a particular amino acid.)

Which of the following sequences on a DNA molecule would be complementary to GCTTATAT? (A pairs w/T) (C pairs w/G) TAGGCGCG ATCCGCGC CGAATATA TGCCTCTC

CGAATATA

Place the following structures in order from least to most complex organization: chromatin, nucleosome, DNA, chromosome

DNA, nucleosome, chromatin, chromosome

What phase is characterized by preparation for DNA synthesis?

G1 (synthesis phase)

What a feature common to all three components of the cytoskeleton?

They are all polymers of protein subunits.

A mutation in the gene for a cyclin protein might result in what?

a cell with less or more genetic material than normal, cancer

. The nucleus and mitochondria share what feature?

a double cell membrane

. Ion pumps and phagocytosis are both examples of ________.

active transport

Which of the following is part of the elongation step of DNA synthesis? pulling apart the two DNA strands attaching complementary nucleotides to the template strand untwisting the DNA helix none of the above

attaching complementary nucleotides to the template strand (stage 2 elongation)

What multipotent stem cells from children sometimes banked by parents?

cells from the umbilical cord and from baby teeth

The diffusion of substances within a solution tends to move those substances ________ their ________ gradient.

down; concentration

Which type of stem cell gives rise to red and white blood cells?

hematopoietic

Because they are embedded within the membrane, ion channels are examples of ________.

integral proteins

Which organelles produces large quantities of ATP when both glucose and oxygen are available to the cell?

mitochondria

Transcription and translation take place in the ________ and ________, respectively.

nucleus;cytoplasm

Diffusion is to ________ as endocytosis is to ________.

osmosis; pinocytosis

Arrange the following terms in order of increasing specialization: oligopotency, pleuripotency, unipotency, multipotency.

pleuripotency, multipotency, oligopotency, unipotency

What a function of the rough ER?

production of proteins

The rough ER has its name due to what associated structures?

ribosomes

Which of the following structures could be found within the nucleolus?

ribosomes

What is a primary function of tumor suppressor genes?

stop certain cells from dividing

Cytoplasm is to cytosol as a swimming pool containing chlorine and flotation toys is to ________.

the water


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