Which of the following is not a component of the endomembrane system?
a) endoplasmic reticulum
b) mitochondria
c) lysosome
d) golgi apparatus
Ans: b) mitochondria
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The information directing the development of the fertilized egg is provided by ____
a. the egg nucleus only b. the sperm nucleus only c. mRNAs in the egg cytoplasm only d. proteins in the egg and sperm cytoplasm e. the egg and sperm nuclei, mRNAs in the egg cytoplasm, and proteins in the egg cytoplasm
In the figure above, the honeycomb on which the bee is standing is made up primarily of ____
a. carbohydrates b. nucleotides c. proteins d. lipids e. amino acids
In a G protein dependent pathway, the effector molecule will activate a nonprotein signal molecule called GDP
1.True 2.False
Given a population that contains genetic variation, what is the correct sequence of the following events under the influence of natural selection?
1. Well-adapted individuals leave more offspring than do poorly adapted individuals. 2. A change occurs in the environment. 3. Genetic frequencies within the population change. 4. Poorly adapted individuals have decreased survivorship. A) 2 ? 4 ? 1 ? 3 B) 4 ? 2 ? 1 ? 3 C) 4 ? 2 ? 3 ? 1 D) 2 ? 4 ? 3 ? 1