1. An experiment was conducted to determine the effect of a new antiviral agent on HIV-infected cells in laboratory cultured cells. The following data were obtained: Time (Week) Percent Cells Alive 0 100.0 1 72.6 2 55.9 3 38.8 4 25.1 5 18.6 6 14.3 7 14.1 8 10.2 According to the data, during which one-week period did more cells die than any other week?
Week 1
Week 3
Week 4
Week 5
Week 7
2. Exactly 492 g of kerosene are required to fill a certain container. If the density of the kerosene is 0.82 g (Media) mL 1 , and at the same temperature the density of mercury is 13.5 g (Media) mL 1 , then what mass of mercury, in grams, would be necessary to fill the container?
3. The mammalian placenta is actually derived from two sources; it forms partly from the mother's uterine lining and partly from the embryonic
somite.
chorion.
allantois.
neural tube.
inner cell mass.
is it inner cell mass?
4. Which area is best described as a major biotic region with short growing seasons, large variation in annual temperatures, and permafrost for a substantial part of the year?
Coniferous forest
Antarctic ice island
Arctic tundra
Grassland
Desert biome
forest??
5. Which protein is involved in cell motility?
Dynein
Lipase
Trypsin
Peroxidase
β-glucosidase
dynein?
6. Naked mole rats, which live in underground tunnels in parts of Africa, live in colonies consisting of a dominant female, several breeding males, and a number of non-breeding males and females with different functions, such as foraging and tunnel maintenance. These mammals most closely approximate the behavioral system of a
pride of lions.
herd of elephants.
flock of birds.
colony of bees.
school of fish.
thanks guys!!!!
Week 1
Week 3
Week 4
Week 5
Week 7
2. Exactly 492 g of kerosene are required to fill a certain container. If the density of the kerosene is 0.82 g (Media) mL 1 , and at the same temperature the density of mercury is 13.5 g (Media) mL 1 , then what mass of mercury, in grams, would be necessary to fill the container?
3. The mammalian placenta is actually derived from two sources; it forms partly from the mother's uterine lining and partly from the embryonic
somite.
chorion.
allantois.
neural tube.
inner cell mass.
is it inner cell mass?
4. Which area is best described as a major biotic region with short growing seasons, large variation in annual temperatures, and permafrost for a substantial part of the year?
Coniferous forest
Antarctic ice island
Arctic tundra
Grassland
Desert biome
forest??
5. Which protein is involved in cell motility?
Dynein
Lipase
Trypsin
Peroxidase
β-glucosidase
dynein?
6. Naked mole rats, which live in underground tunnels in parts of Africa, live in colonies consisting of a dominant female, several breeding males, and a number of non-breeding males and females with different functions, such as foraging and tunnel maintenance. These mammals most closely approximate the behavioral system of a
pride of lions.
herd of elephants.
flock of birds.
colony of bees.
school of fish.
thanks guys!!!!
