Classification and Structure of Organisms Unit Test Review

Question 1

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

Answer 1

Bacteria are transmitted easily and reproduce quickly

Question 2

Consider the diagram of the basic structure of bacteria.

https://media.edgenuity.com/evresources/3209-10-10/mc022-1.jpg

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

Answer 2

A

Question 3

Which term represents animals without backbones?

Answer 3

Invertebrates

Question 4

The body obtains sugar from food. Which system most directly affects blood sugar levels?

Answer 4

Digestive

Question 5

Which best describes the different modes of bacterial reproduction?

Answer 5

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

Question 6

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

Answer 6

Kingdom

Question 7

Which level of organization falls directly after the tissue level when listed in order from least to most complex?

Answer 7

Organ

Question 8

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?

Answer 8

I and IV

Question 9

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

1. Special sex pilus connects two cells.
   2.
2. Each cell makes a complementary DNA strand.
3. The cells separate.

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

Answer 9

Some DNA moves from one cell to another

Question 10

The brain and spinal cord work together so the body can receive signals and react to the environment. What is the spinal cord?

Answer 10

An organ

Question 11

Which of these are characteristics of all animal cells? Check all that apply.

Answer 11

A. They contain a nucleus

B. They are eukaryotic

F. They contain membrane-bound organelles

Question 12

Scientists group organisms into kingdoms by looking at specific characteristics. Thermus aquaticus, shown below, is a specialized bacteria called a thermophile. Thermophiles are microorganisms that can live in bodies of water that are extremely hot, such as deep sea hydrothermal vents.

Which characteristic most likely describes a mushroom but not Thermus aquaticus?

Answer 12

Eukaryotic

Question 13

Which animals form a eusocial society?

Answer 13

Ants

Question 14

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

Answer 14

Class

Question 15

Consider the recent phylogenetic tree of five different organisms.

https://media.edgenuity.com/evresources/3209-10-01/mc023-1.jpg

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

Answer 15

Birds and bats