Which of the following is an example of a mechanical barrier?

A) stomach acid
B) mucus
C) skin
D) lysozyme
E) antimicrobial peptides


Answer: B

Biology & Microbiology

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What is the most likely reason for the decrease in hominin hairiness compared to apes?

a. To limit infectious disease spread b. To improve hygiene c. To regulate temperature and allow sweat to evaporate d. To allow skin to absorb sunlight, for vitamin D e. To save energy that hair production requires

Biology & Microbiology

One of the strands in a DNA double helix has the nucleotide sequence 5'-ACCTGCTACGG-3'. What is the sequence of the complementary DNA strand?

What will be an ideal response?

Biology & Microbiology

Differentiate between configuration and conformation.

What will be an ideal response?

Biology & Microbiology

____ is NOT part of photosynthesis. 

A. Trapping the sun's energy B. Converting glyceraldehyde-3-phosphate into usable energy C. Splitting water molecules D. Bonding carbon dioxide to ribulose

Biology & Microbiology