Unit 7 Tiny Test Review

One method of determining the classification of an animal is by comparing the amino acid sequence. Which of these animals most closely resembles the unknown animal?

• Mouse: Met-Gly-Ser-Tyr-Tyr-Arg-His- Glu Val-Val-Leu

• Dog: Met-Gly-Ser-Tyr-Tyr-Arg-His-Asp Glu-Lys-Asp

• Horse: Met-Gly-Ser-Ser-Tyr-Arg-Arg- Asp His-Glu-Lys-Asp

• Cat: Met-Gly-Ser-Tyr-Tyr-Arg-His-His- Arg Cys-Thre-Asp

A plant group has the following characteristics:

-Lives in wet areas

-Lacks vascular tissue

-Independent sporophyte

Select the correct box where this plant group would belong on the plant timeline below.

Which is true about bacteria?

• Needs a host cell to reproduce

• Not living

• Can be treated with antibiotics

• Prevented with vaccines

Which is true about viruses?

• Can be treated with antibiotics

• Needs a host cell to reproduce

• Infections impact local areas of the body.

• Are made of cells and are living

Which is true about both bacteria AND viruses?

• Both are prevented with vaccines

• Both need a host cell to reproduce

• Both are living

• Both contain DNA & RNA

Which of these would likely result in a change to the current classification of organism?

• Observing organism that occupy the same ecological niche

• Linking the organism to different ancestors through DNA sequencing

• Discovering organisms with similar physical traits in the fossil record

• Finding a related organism that was previously considered extinct

A student researching bacteria concluded a report with the claim -

" All bacteria disrupt the health of organism they inhabit, including humans."

Which statement correctly addresses the validity of the claim?

• The claim is invalid because only microorganisms such as viruses disrupt the health of organisms

• The claim is valid because many studies and experiments have shown that bacteria disrupt homeostasis

• The claim is invalid because there are many types of bacteria that help organisms maintain homeostasis.

• The claim is valid because bacteria cause disease.

Organisms are classified today using the Linnaean system, and the following table shows the taxonomic classification of two marine organisms living along the Pacific Coast.

Taxonomic classification is important to marine biologists because it provides a way to —

• identify marine organisms and find evolutionary relationships between them

• designate Latin as the universal language of marine biology

• discover and name every marine organism on Earth

• prove that marine evolution occurs

Viruses can be transmitted through air, water, food, insect bites, and direct skin contact. Once a virus gains entry to the body, it invades a host cell in order to —

• metabolize host proteins and grow

• synthesize antibodies for defense

• access cellular processes for replication

• synthesize antibodies for defense

The study of embryos and other early stages of development can help in the classification of living things, past and present, by providing clues about the --

• rate of appearances of new terrestrial organisms

• prokaryotic species that are at risk for extinction

• barriers to mating among marine populations

• common ancestry among vertebrate species