Which of the following is not a characteristic of the fungi?

• A) They are all absorptive heterotrophs
• B)They have cell walls made of chitin.
• C)Mitosis takes place within the nuclear membrane.

Which of the following statements best describes fungi?

• A) All are eukaryotic, multicellular autotrophs
• B)All are eukaryotic heterotrophs that feed by absorption
• C)All are prokaryotic, multicellular autotrophs.

BIOLOGY 2
TOPIC: ENDOCRINE SYSTEM

MULTIPLE CHOICE QUESTION.
Which of the following best describes hormones?

• A) Hormones are relatively unstable and work only in the area adjacent to the gland that produced them.
• B)Hormones are stable, long-lasting chemicals released from glands.
• C)All hormones are lipid-soluble

The hormone melatonin, which is involved in skin blanching in lower vertebrates, is released from the

• A) anterior pituitary gland.
• B) melanocytes.
• C) pineal gland.

The adrenal cortex releases ________________, which stimulates Na⁺ reabsorption by the kidneys.

• A) epinephrine
• B) aldosterone
• C) cortisol

BIOLOGY 3
TOPIC:DNA: THE GENETIC MATERIAL

1) Using the Southern Blot used in the Solving Problems section... You are studying a gene responsible for pigment biosynthesis in plants. RR individuals are red; Rr are pink; and rr are white. The restriction map of the R allele is:

You extract genomic DNA from a red, a pink, and a white plant; digest with EcoRI, HindIII and EcoRI+HindIII; run on a gel, and transfer to nitrocellulose. You have a cDNA for the R gene which you use as a probe. The results of the autoradiogram are as follows:

What would the resulting autoradiogram look like if you performed this blot, but skipped:

a) digesting the DNA with restriction enzymes.

b) gel electrophoresis.

c) separating the DNA strands with alkali.

d) capillary transfer.

e) blocking the nitrocellulose.

f) adding the probe.

g) washing the blot.