Birds Are One of Two Groups of Flying Vertebrates (Bats

question 142

Multiple Choice

Birds are one of two groups of flying vertebrates (bats are the other) . Their adaptations for flight include:

• A)hollow bones.
• B)heavy jaws.
• C)a method of breathing that extracts a majority of the oxygen from each breath of air.
• D)efficient kidneys that remove metabolic wastes more quickly than is the case in other vertebrates.
• E)None of the answer options is correct.

---

Definitions:

Togaviruses

A family of viruses that includes both the alphaviruses and rubiviruses, which can cause diseases in humans and animals.

Nucleic Acid

A complex organic substance present in living cells, especially DNA or RNA, whose molecules consist of many nucleotides linked in a long chain.

Enveloped Viruses

Enveloped viruses are viruses that have a lipid bilayer membrane derived from the host cell membrane surrounding their capsid, aiding in infection processes.

Stanley Prusiner

Stanley Prusiner is a scientist known for his discovery of prions, a type of infectious agent composed of protein material that can replicate without containing nucleic acids.