The first phase in normal cellular respiration and the only one occurring in the cytoplasm is called ________
A) the citric acid cycle
B) glycolysis
C) electron transport
D) None of the above is correct.
B
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How do cells "interact" with the extracellular matrix?
A. through cadherins B. through integrins C. through gap junctions D. through tight junctions
Why was it important for Mendel to remove the anthers from pea plants in his experiments when crossing two different true-breeding pea plants?
A. To prevent self-fertilization B. To make sure self-fertilization would occur C. To protect the pea plants from environmental pollen D. To stimulate the pea plants to ovulate
Why is it unlikely that DNA was NOT the first
self-replicating molecule of life?
a. nitrogen is essential for constructing DNA and there was no nitrogen on early Earth b. DNA is hyper-sensitive to oxygen and would have disassembled quickly in its presence c. DNA requires proteins like DNA polymerase for assembly so it doesn’t truly “self-replicate” d. it must have RNA to self-replicate and RNA evolved much later in life’s history e. more than one of these is correct
Insulin is secreted by cells in the _______.
A. testes B. pituitary C. liver D. pancreas