What is the purpose of regulatory proteins?
a. To store nutrients
b. To defend against foreign invaders
c. To catalyze a specific chemical reaction
d. To control the expression of specific genes
e. To strengthen and protect cells and tissues
d
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A serving of 30 grams of almonds may have 190 calories listed on a nutrition label. This represents enough energy to raise the temperature of
A. 30 kilograms of water 190°C. B. 190 grams of water 1°C. C. 30 grams of water 190°C. D. 90 kilograms of water 1°C.
The human genome sequence was reported in 2003 by two groups, the publicly funded ________ and ________
Fill in the blank(s) with correct word
What does it mean for an allele to become fixed, and what does it imply?
A. The frequency of the fixed allele has become 0% because it was detrimental. B. The frequency of the fixed allele has become 0% and is no longer present. C. The frequency of the fixed allele has become 100% because it is beneficial. D. The frequency of the fixed allele has become 100% and other alleles are lost.
Which of the following contributes to protecting the eyes from microbial invasion?
A. tears contain lysozyme and salt. B. a mucus layer traps and removes microbes. C. tears mechanically flush particles from the eyes. D. tears contain lysozyme and salt and mechanically flush particles from the eyes. E. tears and mucus combine to trap microbes and remove them.