Biology 155 Chap 4-6

Which of the following help direct the movement of materials or organelles throughout the cell?

Which of the following organelles is found uniquely in autotrophic, eukaryotic cells and not heterotrophic, eukaryotic cells?

After proteins are formed by the ribosomes located on the endoplasmic reticulum, what is the next organelle to which they could be transported?

Which is NOT true about the cell theory?

As they flow over rotten logs as a fluid sheet, slime molds appear to lack any partitioning into individual cells; however, slime molds do become cellular when they change form to produce spores. The surface of some parasitic flatworms and some insect tissues are a “syncytium” or layer of living material that contains many nuclei and cell organelles but lacks partitioning by cell membranes. These tissues consume food and produce wastes. In light of the cell theory that “all living things are composed of cells,” then

Which of the following gives rise to both lysosomes and vesicles?

Which of the following features is unique to bacterial cells?

Which of the following features is NOT found in a bacterial cell?

Which statement is NOT true about bacteria?

Which statement is NOT true about bacterial anatomy?

An amino sugar called N-acetylmuramic acid is an important building block of the cell wall of some bacteria. Penicillin prevents this amino sugar from being incorporated into the bacterial cell wall. Therefore,

Most bacteria live in a solution that is hypotonic relative to the cytoplasm of the bacteria. The cell wall of a bacterium is a peptidoglycan polymer that is tightly cross-linked. This would therefore function to

Which is NOT true of eukaryotic cells?

According to the endosymbiosis theory _______ were engulfed by larger eukaryotic cells

Which of the following is NOT offered as evidence in support of the endosymbiotic theory, the belief that a eukaryotic cell has evolved as a “committee” of prokaryotic cells?

Which is a true statement about ribosomes?

Chloroplasts are to ____________ as ___________ are to aerobic respiration.

_______ are to ribosomes as lipids are to _________.

Without a cytoskeleton, eukaryotic cells would NOT

Mitochondria have an inner membrane system called thylakoid membranes.

All cells have a cell wall that regulates the passage of molecules into and out of the cell.

Mitochondria are thought to be derived from aerobic bacteria that became part of the eukaryotic cell through endosymbiosis.

Mitochondria and chloroplasts are able to reproduce independently from the division of the cell.

Which of these is NOT part of the endomembrane system of the cell?

Membrane-bounded vesicles that contain enzymes for oxidizing small organic molecules with the formation of hydrogen peroxide are

Which is NOT a characteristic of mitochondria

Which cytoskeletal element is NOT correctly associated with its characteristic?

The cells that line our respiratory tract, and one-celled paramecia both have these short hair-like projections.

The springtail is a very common small insect that lives in rotten logs, rich soil, and other humid places. Its cuticle is water repelling (hydrophobic) except for a strange organ, the collophore, on its ventral side. Because it lacks the excretory organs of other insects, the springtail has this organ in contact with the water (it is responsible for ion balance and secretion of wastes). If we examined the cell structure of this collophore, we would expect to find a high number of

Each time the water in a cell freezes slowly, long sharp crystals spear through the membrane structures of the cell. However, in the frozen state, virtually no chemical reactions occur. The most likely explanation for the bad taste of meat that has “freezer burn” from repeated freezing is the destruction of

Which of the following gives rise to both lysosomes and vesicles?

All cells have these two characteristics:

Cell biologists have introduced radioactively labeled carbohydrates, fats and amino acids to living cells, allowed time for cell metabolism, and then disrupted the cells in a blender and separated out the various cell organelles from the cytoplasm. They found the radioactive molecules could soon be detected as part of various cellular compounds, although the visible cell structures appeared unchanged. This leads us to conclude that

From your knowledge of the size and density of cell components and the process of centrifugation, predict the order (from first to last) that the nucleus and various cell organelles will be extracted?

Why is a large surface area: volume ratio needed for cells to function properly?

The plant cell’s central vacuole

Of the following, which is NOT associated with the mitochondria?

A multicellular organism like a rabbit will be

What cellular organelle is responsible for receiving the mRNA and turning it into a protein

Which statement about the nucleus is incorrect?

Which cellular organelle is the most prominent

During the sequencing of DNA into a protein, what is the first step

DNA is housed within the nucleus, but the mRNA code needs to leave in order to be translated into a protein. How does the mRNA code leave the nucleus if the nucleus is surrounded by the nuclear envelope?

What structures enable the vesicles from the Golgi apparatus to fuse with the cell membrane?

Which organelle is primarily responsible for the breakdown of lipids within the cell

Which of the following products can be found in vacuoles?

If a researcher was interested in slowing down the movement of amoebas by disrupting their cell membranes, which protein filaments should she be studying?

During cellular movement which of the following filaments will be the ones that are responsible for attaching and pulling the other filaments along

What are the potential consequences of a genetic disorder that prevents an individual from properly forming microtubules?