Questions from Conceptual Biology

Q: Root hairs ______. a. conduct water from cortex to aboveground

Root hairs ______. a. conduct water from cortex to aboveground shoots b. increase the root’s surface area for absorption c. anchor the plant in soil

Q: The activity of lateral meristems ______ older roots and stems.

The activity of lateral meristems ______ older roots and stems. a. lengthens b. thickens c. both a and b

Q: Tree rings occur ______. a. when there are droughts during

Tree rings occur ______. a. when there are droughts during the time the rings form b. where environmental conditions influence xylem cell size c. if heartwood alternates with sapwood d. as epidermis r...

Q: London, England, is at the same latitude as Calgary in

London, England, is at the same latitude as Calgary in Canada’s province of Alberta. However, the mean January temperature in London is 5.5°C (42°F), whereas in Calgary it is minus 10°C (14°F). Compar...

Q: In 1798, a stuffed platypus specimen was delivered to the British

In 1798, a stuffed platypus specimen was delivered to the British Museum. Reports that it laid eggs created much confusion. To modern biologists, a platypus is clearly a mammal. It has fur and the fem...

Q: IPSCs are nearly identical to human embryonic stem cells in terms of

IPSCs are nearly identical to human embryonic stem cells in terms of gene expression, but there may be other ways in which they are not equivalent. For example, the telomeres of IPSCs often vary in le...

Q: _____tissues are sheetlike with one free surface. a.

_____tissues are sheetlike with one free surface. a. Epithelial b. Muscle c. Nervous d. Connective

Q: The red blood cell enzyme carbonic anhydrase contains a zinc cofactor.

The red blood cell enzyme carbonic anhydrase contains a zinc cofactor. A diet deficient in zinc does not reduce the number of red blood cells, but it impairs respiratory function by reducing CO2 outpu...

Q: 1. Respiratory proteins such as hemoglobin ________. a. contain

1. Respiratory proteins such as hemoglobin ________. a. contain metal ions b. occur only in vertebrates c. increase the efficiency of oxygen transport d. both a and c 2. _____ binds to hemoglobin eve...

Q: A developing fetus obtains oxygen from its mother’s blood. In an

A developing fetus obtains oxygen from its mother’s blood. In an organ called the placenta, fetal capillaries run through and exchange substances with maternal blood. The hemoglobin made by a fetus ha...