Which of these animals has an open circulatory system?
a. lobster
b. shark
c. sea anenome
d. sponge
e. nematode
Answer: a. lobster
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Mollusc catch muscles are able to generate tension for long periods of time without consuming much energy. We do not understand everything about how this is accomplished, but there are unique proteins, such as __________, that seem to play a role
A) Twitchin B) Myosin C) Titin D) All of the above Fill in the blank with the correct answer.
The release of a mature egg from the ovary is called ________.
A. ovulation B. fertilization C. menses D. menopause
The second stage of gene expression Is transcription Occurs in the nucleus Is the synthesis of protein Occurs on ribosomes Is translation Is the synthesis of a messenger RNA molecule
What will be an ideal response?
The changing color of a bruise is caused by the breakdown products of hemoglobin. Hemoglobin is broken down into ________, which is a green molecule. ________ is a yellowish-brown molecule, again a breakdown product of hemoglobin.
A) basophil : Plasma B) ammonia: Bile C) bilirubin : Biliverdin D) biliverdin : Bilirubin E) bile : Ammonia