What is the glycolipid
What will be an ideal response?
Ans: Lipids with a carbohydrate that form an another protective layer outside the cell wall.
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A house plant seems to be growing slowly and lacks its normal bright green color. You call a botanist for advice. She suggests that the plant may be deficient in magnesium (Mg2+). Why are these symptoms associated with Mg2+ deficiency?
A) Mg2+ is important in the structure of many amino acids. B) Lack of Mg2+ in the soil allows pathogenic bacteria to grow. C) Mg2+ is required before NADPH can function. D) Mg2+ is an important component in chlorophyll. E) Cytochromes require Mg2+ to function properly.
Imagine in lemmings, that gray fur color (G) is dominant over white (g). There is another gene, called color, and individuals must have at least one color (C) allele for gray color to be expressed. A lemming that is heterozygous at both loci is crossed with a white lemming that is heterozygous for gray fur color. Which of the following is correct regarding their offspring?
A. All will be gray B. All will be white C. 3/8 will be gray, 5/8 will be white D. 1/4 will be gray, 3/4 will be white E. They will have a ratio of 9 gray:7 white
A(n) __________ is a noncellular infectious particle with a protein coat enclosing DNA or RNA. Fill in the blank(s) with the appropriate word(s)
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.