Q: The presence of what in leaf cells makes most leaves appear green? Read this paragraph and choose the correct option from the provided answers: 30.4 | Leaves By the end of this section, you will be able to: Identify the parts of a typical leaf Describe the internal structure and function of a leaf Compare and contrast simple leaves and compound leaves List and describe examples of modified leaves Leaves are the main sites for photosynthesis: the process by which plants synthesize food. Most leaves are usually green, due to the presence of chlorophyll in the leaf cells. However, some leaves may have different colors, caused by other plant pigments that mask the green chlorophyll. The thickness, shape, and size of leaves are adapted to the environment. Each variation helps a plant species maximize its chances of survival in a particular habitat. Usually, the leaves of plants growing in tropical rainforests have larger surface areas than those of plants growing in deserts or very cold conditions, which are likely to have a smaller surface area to minimize water loss. Choices: - hydrogen - sodium - carbonate - chlorophyll A:
chlorophyll

Q: An increase in the body's cholesterol levels can lead to your arteries filling with what? Read this paragraph and choose the correct option from the provided answers: Ways to prevent atherosclerosis include eating healthy foods, getting plenty of exercise and not smoking. A diet high in saturated fat and cholesterol can raise your body's cholesterol levels, which can lead to increased plaque in your arteries. Cholesterol and saturated fat are found mostly in animal products, such as meat, eggs, milk and other dairy products. Choices: - triglycerides - fat - marble - plaque A:
plaque

Q: Q: What is the name of a tough, fibrous membrane which protects the outer layer of bone? Read this paragraph and choose the correct option from the provided answers: Periosteum is a tough, fibrous membrane that covers and protects the outer surfaces of bone. Choices: - cartilage - marrow - the epithelium - the periosteum A:
A: the periosteum

Question: Q: Elemental carbon is a black, dull-looking solid that conducts heat and this? Read this paragraph and choose the correct option from the provided answers: Elemental carbon is a black, dull-looking solid that conducts heat and electricity well. It is very brittle and cannot be made into thin sheets or long wires. Of these properties, how does carbon behave as a metal? How does carbon behave as a nonmetal?. Choices: - light - energy - vibration - electricity A:
Answer: electricity

*Question*
Q: In humans, what period lasts from the ninth week of development until birth? Read this paragraph and choose the correct option from the provided answers: 28.3 Fetal Development The fetal period lasts from the ninth week of development until birth. During this period, male and female gonads differentiate. The fetal circulatory system becomes much more specialized and efficient than its embryonic counterpart. It includes three shuntsthe ductus venosus, the foramen ovale, and the ductus arteriosusthat enable it to bypass the semifunctional liver and pulmonary circuit until after childbirth. The brain continues to grow and its structures differentiate. Facial features develop, the body elongates, and the skeleton ossifies. In the womb, the developing fetus moves, blinks, practices sucking, and circulates amniotic fluid. The fetus grows from an embryo measuring approximately 3.3 cm (1.3 in) and weighing 7 g (0.25 oz) to an infant measuring approximately 51 cm (20 in) and weighing an average of approximately 3.4 kg (7.5 lbs). Embryonic organ structures that were primitive and nonfunctional develop to the point that the newborn can survive in the outside world. Choices: - third trimester - plasma period - development period - fetal period A:
**Answer**
fetal period

Q: Q: Zoonotic pathogens are transferred from what to what? Read this paragraph and choose the correct option from the provided answers: Choices: - humans to animals - animals to animals - humans to humans - animals to humans A:
A: animals to humans