Exam 3: Cell Structure and Function

Each time water in a cell freezes slowly,long sharp crystals spear through the membrane structures of the cell.The most reasonable explanation for the bad taste of meat that has "freezer burn" from repeated freezing is the destruction of

Tissues that produce large amounts of secretions,such as the gastric glands of the stomach,contain cells with large numbers of

In a person with a mitochondrial disease in which the mitochondria do not produce enough energy for the cell,which organs would most likely be affected?

An agent would make a good antibiotic if it affected a structure or process only found in bacterial cells and not in our (eukaryotic)cells.Which of the following actions would theoretically make a good antibiotic?

Because plants evolved from bacterial ancestors,the primary plant cell wall and the bacterial cell wall are both composed of peptidoglycan.

Tay-Sachs is a serious childhood metabolic disorder where ____ fail to digest certain lipids.

During photosynthesis,solar energy is converted to chemical energy by the chloroplasts.The process is represented by

When viewed through a microscope,one characteristic of living cells is that their internal structures move.What organelles are most directly responsible for this motion we see?

Considering that minute differences in organelle structure are enough to provide selective toxicity,which of the following cell organelles would be a good target for an antibiotic so it doesn't attack your cells?

If cells were moved to a low-gravity environment,such as in space exploration,a change would most likely be expected in the

The nucleolus

Which of the following is not true concerning the cell theory?

The body of a slime mold that flows over a rotten log appears to lack any partitioning into distinct cells; however it does become cellular when it changes form and produces spores.The surfaces of parasitic flatworms and some insect tissues are "syncytial" layers of living material that developed from a single cell but now contains many nuclei but lack partitioning by cell membranes.These tissues actively consume food and produce wastes.Considering that the cell theory states that "all living things are composed of cells," then

Which organelle will give off oxygen and use up carbon dioxide in plants?

Both plant and animal cells have mitochondria because they both

Centrioles

Which cellular structure is responsible for packaging materials with the cell?