Mcas cells structure and function

Mcas cells structure and function

Multiple Choice

What are synthesized by the ribosomes?

• A. carbohydrates

• B. lipids

• C. nucleic acids

• D. proteins

Multiple Choice

The diagram below represents Trichodina. Trichodina is a eukaryotic organism that attaches itself to fish and eats bacteria. Which of the following distinguishes Trichodina from all prokaryotes?

• A. Trichodina is unicellular.

• B. Trichodina has a nucleus.

• C. Trichodina has cytoplasm.

• D. Trichodina is heterotrophic.

Multiple Choice

Some diseases decrease the activity of certain enzymes in the mitochondria of cells. Which of the following is the most direct result of this decreased enzyme activity?

• A.The cells are not able to divide by mitosis.

• A.The cells are not able to move water by diffusion.

• A.The cells produce less ATP by cellular respiration.

• A.The cells produce fewer sugars by photosynthesis.

Multiple Choice

Which of the following organisms is a prokaryote?

• A. Agaricus arvensis, horse mushroom

• B. Rhizopus stolonifer, bread mold fungus

• C. Saccharomyces cerevisiae, baker’s yeast

• D. Thiopedia rosea, purple sulfur bacterium

Multiple Choice

A student views cells from several different prokaryotic and eukaryotic organisms under a high-powered microscope. Which of the following statements describes how the prokaryotic cells appear different from the eukaryotic cells?

• A. The prokaryotic cells are much larger.

• B. The prokaryotic cells do not have nuclei.

• C. The prokaryotic cells have mitochondria.

• D. The prokaryotic cells have a less distinct shape.

Multiple Choice

Which of the following statements best describe this organism?

• A. The organism is eukaryotic because it has a plasma membrane.

• B. The organism is prokaryotic because it can reproduce asexually.

• C. The organism is prokaryotic because it can synthesize its own food.

• D. The organism is eukaryotic because it has membrane-bound organelles.

Open Ended

The drawing below represents an organism that a student observed when examining a sample of pond water with a light microscope.

The student identified this organism as a prokaryote.

a.Is the student's identification accurate? Explain your answer using information from the diagram.b.Identify three similarities between the cells of prokaryotes and eukaryotes.

Poll

Are you comfortable with cell structure and function

• Can you tell the difference between Prokaryotes and Eukaryotes

• Can you distinguish between plant and animal cells

• Are you able to name what all cell have in common?

• Can you tell the roles of each organelles

• Recall Prokaryotes rhyme with No and Eukaryotes rhyme with DO.

Multiple Choice

Which of the following distinguishes this bacterial cell from eukaryotes?

• The bacterial cell is a unicellular organism, and all eukaryotes are multicellular.

• Ribosomes are found in the cytoplasm of the bacterial cell, and eukaryotes do not have ribosomes.

• The bacterial cell has both a cell membrane and a cell wall, and eukaryotes have only cell membranes.

• DNA in the bacterial cell is always in contact with the cytoplasm, and all eukaryotes have DNA located inside a nucleus.

Multiple Choice

A cell from an organism has the structures listed below.

Nucleus, mitochondria, cell wall, chloroplasts

The organism is most likely classified as which of the following?

• A. animal

• B. bacterium

• C. fungus

• D. plant

Multiple Choice

The diagram below represents a single-celled organism. Which labeled part identifies this single-celled organism as eukaryotic?

• A.cell membrane

• B.cytoplasm

• C.flagellum

• D.nucleus

Multiple Choice

Which of the following types of organisms have cell walls composed of cellulose?

• A. amoebas

• B. birds

• C. grasses

• D. worms

Multiple Choice

Which of the following is a function of the nucleus?

• A. absorbing sunlight

• B. releasing usable energy

• C. storing genetic material

• D. producing food molecules

Multiple Choice

A scientist discovered a new organism in some caves in Pennsylvania. The organism has the following characteristics:

•It is multicellular.

•Its cells lack cell walls.

•It is motile.

•It is heterotrophic.

Based on this information, to which kingdom does the organism belong?

• Animalia

• B.Eubacteria

• C.Fungi

• D.Plantae

Multiple Choice

A cell from an organism has the structures listed below.

nucleus mitochondria cell wall chloroplasts .The organism is most likely classified as which of the following?

• A.animal

• B.bacterium

• C.fungus

• D.plant

Multiple Choice

3. Several parts of an animal cell are involved in the processes of protein synthesis, packaging, and export. Which of the following correctly places the cell parts in the order in which they are involved?

• A.nucleus → vacuole → cell membrane

• B.mitochondria → vacuole → cell membrane

• C.ribosome → endoplasmic reticulum → Golgi complex → cell membrane

• D.lysosome → endoplasmic reticulum → Golgi complex → cell membrane

Multiple Choice

A scientist is studying gene expression in a prokaryote. Which of the following organisms could the scientist be studying?

• A. Bacillus subtilis, a bacterium

• B. Leucobryum glaucum, a moss

• C. Lycoperdon pyriforme, a fungus

• D. Caenorhabditis elegans, a roundworm

Multiple Choice

A cell is shown in the diagram below. Which of the following cell characteristics provides evidence that this cell comes from a plant and not from an animal?

• A.a large vacuole

• B.a single nucleus

• C.a functional mitochondrion

• D.a semipermeable cell membrane

Multiple Choice

• A. moving genetic material

• B. converting light to chemical energy

• C. providing structural support to the cell

• D. synthesizing proteins for cellular functions

Multiple Choice

Which of the following statements describes a way in which plant cells and animal cells are similar

• A.Both types of cells are prokaryotic.

• B.Both types of cells are autotrophic.

• C.Both types of cells have cell walls.

• D.Both types of cells contain mitochondria.

Multiple Choice

Which of the following organisms has the simplest cellular structure?

• A. bacterium

• B. earthworm

• C. mushroom

• D. sunflower

Multiple Choice

A student is looking at a picture of a cell taken through a microscope. The presence of which of the following would indicate that the cell is eukaryotic?

• A. cytoplasm

• B. DNA

• C. nucleus

• D. plasma membrane

Multiple Choice

The illustration below shows the external features of a prokaryotic organism. Which of the following can be concluded about the internal cellular contents of this prokaryote?

• A. The cell does not contain ribosomes

• B. The cell does not contain a nucleus.

• C. The cell contains mitochondria.

• D. The cell contains a vacuole.

Multiple Choice

Which of the following is a function performed by the cell part labeled X and Y?

• A. moving genetic material

• B. converting light to chemical energy

• C. providing structural support to the cell

• D. synthesizing proteins for cellular functions