Honors Biology Exam 4

Which of the following is NOT a cell covering or part of a cell covering

cristae

One function of peroxisomes involves the process of"

detoxification

The smooth endoplasmic reticulum

synthesizes lipids.

Proteins made on ribosomes may be further modified within the:

Golgi Complex

The ____ can be considered a sorting, processing and packaging center.

Golgi complex

Evidence that all living cells have a common origin is provided by:

basic similarities in cell structure and chemistry.

Which scientist first viewed living cells?

Anton van Leeuwenhoek

A glycoprotein destined for secretion from the cell would move through the Golgi complex in this sequence

Cis face to medial region to trans face

A single cell in a smoker;s lung has become cancerous. It doubles its DNA and divides much faster than a normal lung cell. The most likely change that would have caused this condition took place in the:

Nucleus

If a toxin, such as bacterial toxin, destroys ribosomes, what cellular activity will be affected first?

Protein synthesis

Nucleoli contain chromosomal regions that specialize in making

RNA

Which of the following desciptions or structures does not match the cell type?

Sperm cells have flagella. Nerve cells have long, think extensions Epithelial cells are rectangular White blood cells can change shape

Which of the following statements concerning centrioles is False?

They play a role in ribosomal RNA synthesis

It is advantageous for cells to be small because

a small cell size occupies less space in nature where space is limited

The cis fase of the Golgi complex is most directly involved in which of the following?

accepting vesicles for the ER

A basal body is most closely related to a

centriole

Which of the following pairs is correctly matched?

centrosome-cell division

A cellular structure found in plant but not animal cells is the

chloroplast

The theory that chloroplasts and mitochondria had their evolutionary beginnings in eukaryotic cells as endosymbionts is supported by all of the following except:

chloroplast and mitochondia are completely autonomous within eukaryotic cells.

Which of the following structures would not be found in cells of a plant's roots?

chloroplasts

DNA is associated with proteins, forming a complex called

chromatin

A eukarytoic cell:

has a variety of membranous organelles

Which of the following is a key component of the cytoskeleton?

microtubules

Which of the following is (are) located between the primary walls of adjacent cells?

middle lamella

Which of the following organelles plays an important role in apoptosis, or programmed cell death?

mitochondira

Membrane-bounded organelles facilitate faster chemical reactions because:

reactants are within close proximity to each other

Which of the following structures or activities is NOT directly part of the endomembrane system?

ribosomes

Differential centrifugation is a process that:

separates components of the cell that have different densities.

All of the following functions are performed by plant vacuoles except

storage of nucleic acids