The chemical reactions required to sustain life are collectively referred to as a cell's ____
Any help with this question would be great. Thanks.
Answer: metabolism
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Proteins differ from one another because
A) the peptide bonds linking amino acids differ from protein to protein. B) the sequence of amino acids in the polypeptide chain differs from protein to protein. C) each protein contains its own unique sequence of sugar molecules. D) the number of nucleotides found in each protein varies from molecule to molecule.
Which of the following statements about the behavioral effects governed by forS and forR in Drosophila is not correct?
A. The for gene encodes a cGMP-dependent protein kinase. B. This enzyme phosphorylates target proteins in the brain and affects neuronal activity. C. In the absence of food, both sitters and rovers move about in search of food. D. In the presence of food, sitters remain stationary and eat, whereas the rovers move all around the food and eat. E. The sitters usually become obese due to their stationary foraging behavior.
A bacterium that uses the oxidation of inorganic compounds to provide energy for manufacturing
nutritious organic compounds is a: a. photoautotroph. b. parasite. c. saprotroph. d. chemoautotroph. e. pathogen.
What is the genotype of the wild-type mother of these progeny?
In Drosophila, the autosomal recessive pr and cn mutations cause brown and bright-red eyes, respectively (wild-type flies have brick-red eyes). Flies who are homozygous recessive at both pr and cn have orange eyes. A female who has wild-type eyes is crossed to an orange-eyed male. Their progeny have the following distribution of eye colors:
A) pr cn / pr+cn+
B) pr+cn / pr+cn
C) pr+cn / pr cn+
D) pr cn+ / pr cn+
E) pr cn / pr cn