Which early scientist proposed that cells arise only from pre-existing cells?

a. Theodor Schwann
b. Robert Brown
c. Matthias Schleiden
d. Rudolf Virchow


Ans: d. Rudolf Virchow

Biology & Microbiology

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Females almost always have a lower parental investment than males

Indicate whether the statement is true or false.

Biology & Microbiology

Which is the predominant second messenger

involved in regulating glucose metabolism?

a. ATP b. ADP c. mRNA d. cAMP e. NADH

Biology & Microbiology

The ________ zone is also known as the shallow subtidal zone

Fill in the blank(s) with the appropriate word(s).

Biology & Microbiology

According to the data shown in the accompanying figure, the reduction in reproduction rates most closely correlates with a corresponding reduction in survival in ________

A) female collared flycatchers B) male red deer C) female red deer D) fruit flies

Biology & Microbiology