Endocrine glands secrete:
a. enzymes
b. sweat
c. milk
d. saliva
e. hormones
e
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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
In the illustration above showing the haploid phase in the life cycle of a fern, what part represents the male
gametangium? a. 1 b. 2 c. 3 d. 4 e. 5
Small tubes that carry urine from the renal pelvis to the bladder are called
A. urethras. B. the distal convoluted tubules. C. the collecting ducts. D. the ureters. E. the renal corpuscles.
?Making a protein from mRNA is known as ____.
a. ?replication b. ?translation c. ?transcription d. ?polymerase e. ?promoter?