1.1 & 1.2 Cells so far....

1.1 & 1.2 Cells so far....

You've got to be in it to win it!

Multiple Choice

What is diffusion?

• When molecules move from a low concentration to a high concentration

• When molecules move from a high concentration to a low concentration.

• When there is no movement of molecules

• When molecules move everywhere regardless of concentration

Multiple Choice

Why are embryonic stem cells more 'valuable' than adult stem cells?

• Because they are multipotent

• Because they are unipotent

• Because they are pluripotent

• Because they are unimpotent

Multiple Choice

Large numbers of ribosomes are present in cells that specialize in producing which of the following molecules?

• lipids

• steroids

• carbohydrates

• proteins

Multiple Choice

What is the pili used for in prokaryotes?

• movement

• attachement

• protection

• homeostasis

Multiple Choice

Structure A is......

• smooth endoplasmic reticulum

• Golgi apparatus

• rough endoplasmic reticulum

• vesicles

Multiple Choice

This organelle is responsible for translation...

• Golgi apparatus

• ribosome

• lysosome

• rough endoplasmic reticulum

Multiple Choice

How do stem cells know what type of cells to differentiate into?

• The nucleus has instructions to turn some genes on and some genes off.

• Signals from chemicals in the organism or from the environment determine which genes will be turned on and off.

• Genes turn on and off randomly.

• The cell has unique DNA that determines what the cell will become.

Multiple Choice

This is how prokaryotic cells reproduce....

• mitosis

• meiosis

• binary fission

• binary fusion

Multiple Choice

Which of the following is the closest definition of LYSOSOMES?

• An organelle in which cellular respiration occurs.

• The organelle that makes proteins by putting together chains of amino acids using instructions from the DNA.

• Organelles that contain digestive enzymes, which break down worn-out or damaged organelles and foreign invaders in the cell.

• A storage organelle, that may give structure and rigidity to plant cells.

Multiple Choice

What is the function of this organelle?

• protein synthesis

• transport proteins

• modify, package, and ship proteins

• storage of water, food or wastes

Multiple Choice

This organelle makes protein for cells and are made in the nucleolus

• cytoplasm

• ribosomes

• golgi bodies

• E.R

Multiple Choice

Endoplasmic Reticulum is....

• the transportation system of the cell

• is clear, thick, jelly-like substance

• release materials outside the cell

• break down sugars into water and CO₂

Multiple Choice

Which of the following is FALSE when comparing and contrasting eukaryotes and prokaryotes?

• Prokaryotes have 70s ribosomes, eukaryotes have 80s ribosomes.

• Eukaryotes have membrane bound organelles, prokaryotes do not.

• Both prokaryotes and eukaryotes have mitochondria.

• Eukaryotes are larger than prokaryotes.

Multiple Choice

What type of cell could this be?

• Pancreatic

• Palisade

• Epithelial

• White blood cell

Multiple Choice

Cells of the pancreas will incorporate radioactively labeled amino acids into proteins. This tagging of newly synthesized proteins enables a researcher to track their location. In this case, we are tracking an enzyme secreted by pancreatic cells. What is its most likely pathway?

• ER lysosomes → vesicles → that fuse with the plasma membrane

• Golgi →ER → Lysosome

• nucleus → ER → Golgi

• ER → Golgi → vesicles that fuse with the plasma membrane

Multiple Choice

Approximately how big are eukaryotic cells?

• 1-10 nm

• 10-100 nm

• 10-100 μm

• 1-10 μm

Multiple Choice

Which of the following is FALSE when comparing the use of a light microscope compared to an electron microscope?

• Organisms can be alive when viewed with a light microscopes compared to an electron microscope where the vacuum chamber kills them.

• You can watch moving organisms with an light microscope but not with an electron microscope.

• You can see in actual color using a light microscope, not 'added' color using an electron microscope.

• You can magnify organisms over 2,000X with high resolution with a light microscope compared to 200X with an electron microscope.

Multiple Choice

In what way is the DNA of a nerve cell different to the DNA of a muscle cell?

• The DNA is the same but each cell contains different genes

• The DNA is the same but different genes are turned on and turned off in each cell

• The DNA is different, but the same genes are turned on and off in each cell

• The DNA is different, but each cell contains the same genes

Multiple Choice

How is aseptate fungal hyphae an example that contradicts the cell theory?

• Each hyphae is separated by septa each with its own nucleus.

• Each hyphae is a continuous cell that has many nuclei.

• Each hyphae does not contain a nucleus.

• Each hyphae does not come from a preexisting cell.

Multiple Choice

An Amoeba is a unicellular, animal-like protist that lives in ponds and streams. According to cell theory, where did this cell come from?

• another pre-existing amoeba cell.

• energy from sun that allowed the protist to reproduce.

• a multicellular organism.

• the nonliving environment.