Suppose that you conduct an experiment in which you test whether the fertilization envelope forms and polyspermy occurs under the following conditions: control group: an unfertilized sea urchin egg is left untreated (no ca2+ channel blockers added). then sperm are added. experimental group: ca2+ channel blockers are added to an unfertilized sea urchin egg. then sperm are added. drag the labels (yes or no) to predict whether or not the following events can occur under control conditions and experimental conditions.

Asap timed! 1. ice core samples from glaciers ice caps contain bubbles of ancient atmosphere that are in layers based on age. what questions are scientists most interested in? a. how the amount of water vapor needed to make the ice has changed b. how the amount of ozone has changed over time.c. how the amount of ice in each layer has changed over time d. how the amount of carbon dioxide has changed over time 2. what produces milankovich cycles ? a. sunspots ams solar flare on the suns surface b. changes in the earths orbit c. gravitational changes bases on the position of the sun and the moond. cycles of vegetation that result in desert and rainforest conditions

What macromolecule is produced during translation? a. carbohydrate b. rna c. dna d. protein

Asegment of dna that codes for rna and a protein is a