Which of the following can only be viewed by electron microscopy?

A) frog eggs
B) DNA
C) nuclei
D) mitochondria
E) prokaryotes


Answer: B

Biology & Microbiology

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Folic acid supplements have become especially important for pregnant women because _____

A) folic acid supplies vitamins that only pregnant women can use B) the folic acid is stored in adipose tissue by pregnant women so supplements are needed to make more available in the circulation C) the fetus makes high levels of folic acid D) folic acid deprivation is associated with neural tube abnormalities in a fetus E) folic acid deprivation is a cause of heart abnormalities in a newborn

Biology & Microbiology

Long-term storage of milk is made possible by ultra-high-temperature (pasteurization/sanitization/sterilization)

What will be an ideal response?

Biology & Microbiology

Most invertebrates, such as the annelid, have nephridia.

Answer the following statement true (T) or false (F)

Biology & Microbiology

Mark the following statements as true or false concerning water’s relevance to living systems.

What will be an ideal response?

Biology & Microbiology