Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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question 8
Transcribed Image Text:**Transcription for Educational Website**
**Course Name:** MCB2010
**Test #2**
1-3. **Name the three (3) parts (molecules) of a nucleotide:**
- Nitrogen base
- Pentose sugar
- Phosphate
4-7. **List four (4) properties of Viruses:**
- Are not cells
- Can have DNA or RNA, but not both
- Lack enzymes for most metabolic processes
- Lack machinery for synthesizing proteins
8. **The membranes (envelopes) that coat some viruses consist of:**
- ________________
9. **Viral capsids are made up of:**
- Capsomers
10. **Viruses without envelopes (membranes) are called:**
- Naked virion
11. **____________ and ___________ are the two nucleic acids found in viruses.**
- DNA
- RNA
12. **Name an enzyme that some viruses may possess:**
- Polymerase
13. **The spikes of viruses are involved in:**
- Allowing viruses to dock with host cells
14. **Organisms that metabolize the organic material of dead organisms are called:**
- Saprobic microorganisms
15. **_____________ is the process of producing macromolecules:**
- Anabolism
16. **_____________ is the process of producing energy by breaking down large molecules:**
- Catabolism
17-21. **List five (5) properties of enzymes:**
- _______________
- _______________
- _______________
- _______________
- _______________
(Note: Some blanks are present in the original text and left here intentionally for students to fill out during their study practice.)
Expert Solution
Step 1
Introduction
A virus is an infectious submicroscopic creature that only reproduces inside of live cells. All living things, including plants, animals, and microbes like bacteria and archaea, are susceptible to virus infection. Viruses are the most common sort of living organism and can be found in practically all ecosystems on Earth.
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