Q: The leaves of all of what type of plants have two basic parts in common: the blade and petiole? Read this paragraph and choose the correct option from the provided answers: Flowering vascular plants also have diverse leaves. However, the leaves of all flowering plants have two basic parts in common: the blade and petiole (see Figure above ). The blade of the leaf is the relatively wide, flat part of the leaf that gathers sunlight and undergoes photosynthesis. The petiole is the part that attaches the leaf to a stem of the plant. This occurs at a node. Choices: - perennials - deciduous - evergreen - flowering plants A:
flowering plants

Q: When lactose is present in the cell, what allows the lac genes to be expressed? Read this paragraph and choose the correct option from the provided answers: When lactose is present, the repressor protein does not bind to the operator. This allows RNA polymerase to bind to the promoter and begin transcription. As a result, the lac genes are expressed, and lactose is digested. Choices: - concentration of repressor protein - binding of expressor protein - the addition of water - nonbinding of repressor protein A:
nonbinding of repressor protein

Q: What is a common age-related bone disease in which bone density and strength is decreased? Read this paragraph and choose the correct option from the provided answers: View this animation (http://openstaxcollege. org/l/ headblow) to see how a blow to the head may produce a contrecoup (counterblow) fracture of the basilar portion of the occipital bone on the base of the skull. Why may a basilar fracture be life threatening? 3. Osteoporosis is a common age-related bone disease in which bone density and strength is decreased. Watch this video (http://openstaxcollege. org/l/osteoporosis) to get a better understanding of how thoracic vertebrae may become weakened and may fractured due to this disease. How may vertebral osteoporosis contribute to kyphosis? 4. Watch this animation (http://openstaxcollege. org/l/ diskslip) to see what it means to "slip" a disk. Watch this second animation (http://openstaxcollege. org/l/ herndisc) to see one possible treatment for a herniated disc,. Choices: - fibrosis - lupus - arthritis - osteoporosis A:
osteoporosis

Q: Fungi may have both asexual and sexual stages of what? Read this paragraph and choose the correct option from the provided answers: Figure 24.8 Fungi may have both asexual and sexual stages of reproduction. Choices: - absorption - development - photosynthesis - reproduction A:
reproduction