Cells are restricted to one round of DNA replication per cycle by origin of replication binding proteins called
a. ATMs.
b. Akts.
c. Oris.
d. MCMs.
Ans: d. MCMs.
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What is a major difference between the extracellular matrix (ECM) of a plant cell and the ECM of an animal cell?
A) Plant ECM is composed primarily of proteins, whereas animal ECM is mainly carbohydrates. B) Plant ECM is primarily carbohydrate in nature, whereas animal ECM is mainly proteins. C) Plant and animal ECMs are quite similar in structure and function. D) ECM components in plant cells are released extracellularly by the Golgi stacks, whereas lysosomes do this in animal cells.
In natural samples it is often difficult to differentiate live cells from dead cells or cells from nonliving matter
Indicate whether the statement is true or false.
The wood in a match is made of cellulose, a polymer of glucose molecules. When you light the match heat and light are given off, indicating that a(n) ________ reaction is occurring.
A. endergonic B. kinetic energy C. exergonic D. potential energy E. equilibrium
Which of the following statements is (are) true?
a. The systolic pressure is determined when the first sound is heard after pumping up the pressure cuff. b. The diastolic pressure is the smaller of the two pressure values. c. The diastolic pressure is determined when the sounds stop as air is released from the cuff. d. Diastole is at the end of the cardiac cycle. e. All of these are true.