Based on gene sequencing data, it appears that the lineages leading to animals and fungi diverged from
each other about
a. 1 billion years ago.
b. 500 million years ago.
c. 250 million years ago.
d. 125 million years ago.
e. 10 million years ago.
A
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Iron deficiency is often indicated by yellowing in newly formed leaves. This suggests that iron is _____
A) a relatively immobile nutrient in plants B) tied up in formed chlorophyll molecules C) concentrated in the xylem of older leaves D) concentrated in the phloem of older leaves E) found in leghemoglobin and reduces the amount available to new plant parts
This is the stage of mitosis characterized by the alignment of the chromosomes in a ring along the inner circumference of the cell:
A. Interphase B. Telophase C. Prophase D. Metaphase
A graphic illustration of the relationships between species is called a phylogenetic tree
Indicate whether the statement is true or false
Which type of phosphorylation does not require a membrane?
A. Substrate-level phosphorylation B. Oxidative phosphorylation C. Photophosphorylation D. All types of phosphorylation require a membrane.