Savanah Biology quizzes

Plasmids

According to progressive hypothesis, viruses may have originated as mobile genetic elements such as?

The plasma membrane

Although bacteria lack membrane-bound organelles, such as chloroplasts and mitochondria, they can still perform the functions of these organelles by localizing certain metabolic enzymes on?

Assembly

At what stage of a lytic infection are phage components put together to make new viruses?

Integration

At what stage of lysogenic cycle would a prophage appear?

Holdfasts

Brown algae lack true roots, but have similar structures called _______ that anchor them to the substrate?

Purple: Peptidoglycon

Gram positive bacteria would stain what color? gram positive has a thick layer of?

Bacteria form endospores

How do some bacteria respond to adverse environmental conditions?

Cyanobacterium

In primary endosymbiosis, an ancient eukaryotic cell engulfed a(n) ______, which survived and evolved into a chloroplast

Prion

Mad cow disease is an example of an infection caused by a?

Flattened vesicles under the plasma membrane

Members of the alveolates are characterized by the presence of?

Dinoflagellates

Members of which group are known to form blooms known as red tides?

Coenocytic

Some protists consist of a single cell with multiple nuclei. This condition is known as?

Diatoms

The fossilized form of ______ is used in commercially important products, such as filters, polishes, and insect killer?

Receptor

The specificity of viruses to different types of cells is due to _______ sites on host cells?

attachment, penetration, replication, assembly, and release

What are the five (5) stages of a lytic infection?

Manufacture Proteins

What can viruses not do?

Bacteria are not cellular and are sometimes not classified as life forms?

What is not true about bacteria?

Nanometers

What is the correct unit of measurement for the size of most viruses

Capsid

What is the protein coat of a virus called?

To transform DNA between bacteria

What is the purpose of sex pili?

Botulism

Which disease is caused by an exotoxin released by gram positive, endospore-forming bacteria, often because food was not heated sufficiently to kill the endospores?

Cyanobacteria

Which is the only prokaryote to carry on photosynthesis that generates oxygen?

Excavates

Which protest group contains the organism Trypanosoma, a colorless parasite that can cause African sleeping sickness

Obligate anerobic

Which type of bacterium would not be able to survive in the presence of oxygen?

Apicomplexans

Which type of protest is responsible for malaria in humans, parasitic to both humans and mosquitoes?