Answer the question using the accompanying figure. The structures labeled "4" are ____
a. trichocysts
b. cilia
c. flagella
d. pili
e. pellicles
ANSWER: b
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The region of DNA sequences before the start of a gene is often called the promoter. One type of promoter is called the TATA box. Many species' promoters are TATA boxes or a variation of the TATA box
Many species' promoters are TATA boxes or a variation of the TATA box. DNA sequences that are similar in different organisms are called ____ sequences. Fill in the blank with the appropriate word.
Which mineral may contribute to high blood pressure?
a. potassium b. calcium c. sodium d. iron e. iodine
The first photosynthetic organisms to obtain hydrogen by splitting water were the cyanobacteria
______________ Indicate whether the statement is true or false.
In a single sodium-potassium pump cycle, ATP is used with the result that
A. 3 sodium ions enter and 2 potassium ions leave. B. 2 sodium ion enters and 1 potassium ion leaves. C. 3 sodium ions leave and 2 potassium ions enter. D. sodium and potassium ions enter and water leaves. E. 2 sodium ion leaves and 1 potassium ion enters.