BIO quiz 2

Consider that you have access to use fluorescent tagging of specific proteins and view cells in a confocal microscope. You isolate a cell with the fluorescent dyes, showing that a very tiny, single-celled organism has not only a cell membrane, but internally folded membranes. You determine also that the membranes do not completely surround internal specialized compartments of the cell. You identify this as

A Prokaryote

Kinetic energy can be described as energy in motion. Which of the following is not an example of kinetic energy? A) sound B) heat C) the energy in chemical bonds D) random molecular movement E) light

C) the energy in chemical bonds

Simple diffusion

Does not require energy

Some members of the Archaea domain are often referred to as extremophiles because many live in conditions of extreme A) salinity. B) temperature. C) acidity. D) heat. E) All of the answer choices are correct.

E) All of the answer choices are correct.

Describe difference between prokaryotic and eukaryotic cells

Eukaryotic are larger more complex cells with a nucleus

Each protein in an electron transport chain is sequentially oxidized, then reduced, allowing small amounts of energy to be released for use by the cell during each transfer.

FALSE

You have macrophage white blood cells that can respond to injury and infection by moving to the site of the wound. They can ingest infectious bacteria or viruses, and digest the organic molecules of what they take in. The digestion organelle they have is the

Lysosome

Determine which of these statements best summarizes the cellular regulation of concentration gradients.

Membrane phospholipids and proteins regulate transport functions to establish concentration gradients or equilibria.

Liver cells help clean your blood with a wide range of digestive enzymes that hydrolyze toxic molecules. Which organelle in the cells would be responsible for removing these toxins from the blood?

Peroxisomes

Plastid organelles, such as mitochondria and chloroplasts, contain their own DNA and ribosomes.

TRUE

A common hypothesis and casual assumption is that dogs originated from wolves. Because of the wide range of body sizes and shapes, other hypotheses include dog ancestry of jackals, coyotes, dingoes, or other wild dog species. In recent years, several studies have been done to clear up the lineage. One study tested the Y chromosome DNA that can only be passed down from male to male, and the other other study tested the mitochondrial DNA because

it is inherited from the mother only