At about nine days gestation, the inner cell mass is organized in two layers; of these layers, (the) ________ faces the amnion.
A) hypoblast
B) mesoderm
C) endoderm
D) epiblast
E) None of the answers are correct.
D) epiblast
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The ______________________________ contain a liquid and delicate hairlike cells that bend when the liquid is set in motion by movement of the head or body.?
Fill in the blank(s) with correct word
The covalent bonds that are formed between different amino acids to form a protein are known as ____
a. peptide bonds b. ionic bonds c. hydrogen bonds d. electrolyte bonds
If plasma levels of ________ were low, excessive cholesterol may be deposited throughout the body tissues, and cardiovascular risk could increase.
A. low-density lipoprotein B. very low-density lipoprotein C. high-density lipoprotein D. medium-density lipoprotein
Which of the following contain three fatty acids and a molecule of glycerol?
a. enzymes b. triglycerides c. phospholipids d. all of the above