Most photosynthesis in the open ocean occurs in the __ abyssal zone euphotic zone estuary zone bathyal zone benthic zone

In plants, chloroplasts function as the site of cellular respiration. A True B False

Oysters, sea stars, and lobsters would be considered what type of organism? phytoplankton zooplankton nekton benthos decomposers

Fats in foods Help the body absorb fat-solube vitamins Contribute 7 kcal per gram of food Are digested and absorbed in the pancreas Shoud be limited to 5% of total calroies per day for a healthy diet

What species was intentionally introduced into the United States? kudzu gypsy moth zebra mussel brown tree snake common pigeon

Forests remove carbon dioxide from the atmosphere and store it in organic compounds as part of the process of __ transpiration respiration D photosynthesis D phosphorylation metabolism

Some toxic chemicals, such as those in DDT,can be stored in the fat tissue of animals. As these animals become food for larger and larger animals, the amount of the toxin gets larger and larger. What is this process called? biophilia biosphere biotechnology biomagnification concentration index

A threatened species __ may soon become extinct over all or most of its range is one that is evolving into another species is one that is likely to become endangered is thought to be endangered, but the data is inconclusive may be considered economically important but rare

Colony collapse disorder is __ limited to Europe D limited to the United States when honey bees leave in winter and don't return to their hives in spring the disintegration of bee hives experienced by members of the bee colony after the queen's death

Choose the substances that can pass through the blood-brain barrier. Nicotine All metabolic waste Some anesthetics All hormones Alcohol

Hot Questions

Which of the following types of cells is most responsible for responding to color? Rods Ganglion cells Bipolar cells Cones Optic nerve

Select the correct statement regarding chemical synapses. Neurotransmitter receptors are located on the axons terminals of cells. The synaptic cleft uses the action potential to transmit a chemical signal to the postsynaptic cell. Cells with gap junctions use chemical synapses. The release of neurotransmitter molecules gives cells the property of being electrically coupled.

The __ is a capillary network that produces a blood filtrate that enters the urinary tubules. glomerulus vasa recta interlobar capillary peritubular capillary

Movement of sodium ions into the muscle cell at the neuromuscular junction causes __ A. Repolarization of the muscle cell membrane B. Depolarization of the muscle cell membrane C. Re-uptake of acetylcholine D. Release of acetylcholine

The neurotransmitters dopamine and serotonin are associated with which emotion? fear joy anger

The movement of molecules and ions from the peritubular capillaries into interstitial fluid and then into the nephron tubule iscalled __ a. secretion b. reabsorption c. excretion d. filtration

B lymphocytes are directly responsible for cell-mediated immunity. Select one: True False

In the sequence of events for inspiration, what step happens immediately after contraction of the inspiratory muscles? Air flows into the lungs Intrapulmonary volume increases Thoracic cavity volume increases Intrapulmonary pressure decreases IDONT KNOWYET

Multiple Choice Question Select the statements that best describes the relationship between genes and chromosomes. Genes are variations of chromosomes and can change the structure of the protein product. Genes are composed of long strands of DNA organized into chromosomes. Chromosomes are composed of long strands of DNA organized into chunks called genes. Chromosomes break down to form genes during meiosis so that the genes can be easily separated during gamete formation.

Which cells secrete parathyroid hormone in the parathyroid gland? Hematopoietic cells Chief cells Parietal cells Follicular cells