ALL ANSWERS E2021 Understanding Organisms Unit Review All 15 questions, in screenshots, in PDF. I got a 100% :)

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For Edge 2021, Honors Biology/Biology.

QUESTIONS ON THE REVIEW, ANSWERS IN PDF:

Unit Tsst

Unit Tsst Review Complete
Consider the classification levels of a human.

Eukarya

Animalia

Chordata

Mammalia

Primates

Hominidae

Homo

sapiens

Which is the most specific taxonomic level in the classification system above?

sapiens

Homo

Hominidae

Primates

Which example best demonstrates the importance of having knowledge of evolutionary relationships?

illustration of a plant leaf

organ transplantation between species

blood donation from a human to a human

DNA sequence of an insect

Consider the diagram of the basic structure of bacteria.

A diagram of a bacterium is labeled. Part A is the cell membrane, part B is the flagellum, part C is the nucleoid, and part D is the pilus.

Which of the labeled structures in the diagram allows bacteria to infect organisms under harsh conditions, such as in the acidic stomach?

A

B

C

D

There are four steps in bacterial conjugation. The second step is missing in this list.

1. Special ### pilus connects two cells.

2.

3. Each cell makes a complementary DNA strand.

4. The cells separate.

Which is the missing step for the process of conjugation described?

Two new, identical cells are produced.

The cell membrane elongates and pinches off.

Some DNA moves from one cell to another.

A DNA molecule attaches to the cell membrane.

Which best explains why angiosperms are the most diverse and successful plant group today?

Reproduction is aided by flowers, protected seeds, and insect pollinators.

Water transport and photosynthesis are aided by vascular tissue.

Plant growth and increasing size are aided by a new way to distribute nutrients.

Reproduction is aided by exposed seeds and wind pollination.

Which level of biological classification is the lowest level that butterflies (invertebrates) and dogs (vertebrates) have in common?

domain

kingdom

species

family

Which level of classification contains orders but is smaller than phylum?

kingdom

family

class

species

Consider the recent phylogenetic tree of five different organisms.

A phylogenetic tree is shown. The root of the tree is birds. The branches are crocodiles, bats, and insects.

Old classification systems based on physical characteristics would most likely disagree with the relationship between which two animals in the tree?

crocodiles and insects

bats and humans

birds and bats

humans and crocodiles

Which reason best explains why bacteria are good at causing infections in other organisms?

It would not be able to divide.

Bacteria are transmitted easily and reproduce quickly.

Bacteria evolve slowly as they pass on genetic information.

Bacteria are easily killed by a host’s immune system or antibiotics.

Which kingdom(s) include both unicellular and multicellular organisms?

Plantae and Archaebacteria

Fungi

Eubacteria

Animalia and Plantae

Which is the correct written form of the scientific name that uses the rules of binomial nomenclature?

Felis domesticus

Felis Domesticus

Felis domesticus

felis domesticus

These statements compare and contrast Ascomycota and Basidiomycota.

I. Some species in both groups can cause plant diseases.

II. Species from both groups can be used in making bread rise.

III. All species in both groups can be used as food.

IV. Ascomycota produce spores in a sac-like structure; Basidiomycota produce spores in a club-shaped structure.

Which of the statements are true?

II and III

III and IV

I and IV

II and IV

Ceratium fusus is a protist that is found primarily in coastal waters, especially around the coast of the United Kingdom. These organisms are unique because they can undergo a special chemical reaction at night that helps defend them against predators. It provides defense by attracting larger predators that prey on the organisms that eat Ceratium fusus. Which characteristic of Ceratium fusus is being described?

photosynthesis

glass-like cell walls

bioluminescence

chitin cell walls

In what respect is a mycelium and a fruiting body similar?

Both are made of hyphae.

Both are found above the ground.

Both produce reproductive spores.

Both absorb nutrients underground.

Which best describes the different modes of bacterial reproduction?

In genetic recombination, two new genetically identical cells are produced.

In conjugation, a special ### pilus is required to connect two bacterial cells.

In transduction, a bacterium exchanges a piece of its own DNA with another from the environment.

In transformation, bacterial DNA is transferred from one bacterium to another by a replicating virus.