Answer the following statements true (T) or false (F)
1. If sucrose is composed of both glucose and fructose, then sucrose must be a monosaccharide.
2. Lipids and carbohydrates can both be used by animals to store energy.
3. Saturated fats are composed of fatty acids with several double bonded carbons.
4. A polyunsaturated fat contains fatty acids with multiple double bonded carbons.
1. FALSE
2. TRUE
3. FALSE
4. TRUE
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The anterioposterior axis of an embryo is established by
A. activin. B. Hox genes. C. cadherins. D. noggin. E. transforming growth factor.
Members of the ____ Lophotrochozoan phylum are acoelomate, dorsoventrally flattened,and do not have circulatory
or respiratory systems.
a. Rotifera b. Mollusca c. Platyhelminthes d. Annelida e. Nemertea
What is a plant’s main line of defense against
viral infection?
a. immune system cells b. viral toxins within the central vacuole c. membrane proteins that latch onto virus particles d. a thick cell wall that prevents viral entry e. a nuclear membrane that is impermeable to viruses
A homozygous plant has sepals of 30-cm flowers while another homozygote of the same species has 40-cm flowers. The F1 flowers are all 35 cm
In the F2, out of 600 plants the smallest flowers were 30 cm and the largest were 40cm; all the others were of intermediate sizes. If all the genes involved in flower size are additive, how many gene pairs are there?