The nuclear envelope is a single lipid layer.
Answer the following statement true (T) or false (F)
False
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Sterol regulatory element binding proteins (SREBPs) are involved in regulating the synthesis of ____
a. proteins b. lipids c. nucleic acids d. carbohydrates e. amino acids
Respond to statements 146–150 in reference to the five animal
phyla listed below. a. Porifera b. Cnidaria c. Platyhelminthes d. Nematoda e. Annelida D 146. Members of this phylum have a pseudocoelomic cavity. D 147. Members of this group have a brain with nerve cords, have a saclike or branched gut, and lack a circulatory system. M 148. Members of this phylum have a brain with a ventral nerve cord, a complete gut, and a circulatory system that is usually closed. E 149. This phylum contains the most primitive species of the animal kingdom in the list. M 150. Tapeworms are members of this phylum.
Archaeal sulfate reducers use elemental sulfur as an electron acceptor.
Answer the following statement true (T) or false (F)
Following their respective breeding seasons, several species of hummingbirds occur at the same locations in North America and several hummingbird flowers bloom simultaneously in these habitats. These flowers seem to have converged to a common morphology and color. Birds are most visually sensitive to the color red. Hummingbird flowers are pollinated by hummingbirds. Which of the following features of these flowers would indicate they have coevolved with hummingbirds? (Check all that apply.)A) Long tubular flowersB) Flowers are colored violet and blueC) Blooming time of the flowers coincides with the arrival of the hummingbirdsD) Flowers produce a high volume of nectar and sugarE) Flowers are low to the ground
What will be an ideal response?