Question

1. Which of the following is present in both gram-positive and gram-negative cell walls? a. an outer membrane b. peptidoglycan c. teichoic acid d. lipopolysaccharide i. The correct answer is 2. Some scientists suspect that the earliest cells on the planet might have used RNA as their basic genetic code. Speculate about why DNA replaced RNA in most organisms as the primary genetic material. a.

          1. Which of the following is present in both gram-positive and gram-negative cell walls?
a. an outer membrane
b. peptidoglycan
c. teichoic acid
d. lipopolysaccharide
i. The correct answer is
2. Some scientists suspect that the earliest cells on the planet might have used RNA as their basic genetic code. Speculate about why DNA replaced RNA in most organisms as the primary genetic material.
a.

1. Which of the following is present in both gram-positive and gram-negative cell walls?
a. an outer membrane
b. peptidoglycan
c. teichoic acid
d. lipopolysaccharide
i. The correct answer is
2. Some scientists suspect that the earliest cells on the planet might have used RNA as their basic genetic code. Speculate about why DNA replaced RNA in most organisms as the primary genetic material.
a.

Added by Laurie N.

Biology for AP Courses

Julianne Zedalis, John Eggebrecht

Instant Answer

Solved by Expert Madhur L

08/28/2023

Step 1

RNA (ribonucleic acid) is a single-stranded molecule that is involved in various cellular processes, including protein synthesis. DNA (deoxyribonucleic acid) is a double-stranded molecule that carries the genetic information of an organism. One possible reason Show more…

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1. Which of the following is present in both gram-positive and gram-negative cell walls? a. an outer membrane b. peptidoglycan c. teichoic acid d. lipopolysaccharide 2. Some scientists suspect that the earliest cells on the planet might have used RNA as their basic genetic code. Speculate about why DNA replaced RNA in most organisms as the primary genetic material.