EOC Prep (Biology)

The organic compounds that scientists use to cut, copy, and move segments of DNA are........ (A) carbohydrates (B) enzymes (C) hormones (D) starches

(B) enzymes

In an effort to reduce the number of deaths due to malaria, scientists have successfully introduced a gene into mosquitoes. The gene makes the mosquitoes unable to support the development of the parasite that causes malaria. The technique used to produce this new variety of mosquito is most likely....... (A) chromatography (B) genetic engineering (C) electrophoresis of genes (D) selective breeding

(B) genetic engineering

A factor not shown in the diagram that provides energy for living organisms is........ (A) carbon dioxide (B) water (C) Sun (D) oxygen

(C) Sun

Which human activity most directly causes a significant increase in the amount of carbon dioxide in the atmosphere? (A) growing corn for food (B) not using products containing plastics (C) driving cars long distances (D) planting large numbers of trees

(C) driving cars long distances

An immune response is primarily due to the body's white blood cells recognizing..... (A) a hormone imbalance (B) abiotic organisms (C) foreign antigens (D) known antibiotics

(C) foreign antigens

Which statement most accurately predicts the result of interfering with populations in the web? (A) Removing the cricket population will have little effect on the balance of the food web. (B) Removing all the mountain lions from the food web will benefit the ecosystem. (C) Removing the cricket and rabbit populations would cause the number of trees to decrease. (D) Removing deer from the food web will affect the rabbit and grass populations.

(D) Removing deer from the food web will affect the rabbit and grass populations.

Scientists have found a gene that makes a protein called PKG that controls certain behaviors in many types of ants. The soldier ant will help collect food when it has a low level of PKG. When it has a high level of PKG, the soldier ant will protect and defend its colony. Soldier ants that are given PKG are more likely to ignore food sources and attack intruders. Which conclusion can best be made from this information? (A) PKG protein is synthesized only by the soldier ants. (B) Genes control which type of amino acids a cell can make. (C)Eating too much protein makes some organisms very aggressive. (D) The behavior of soldier ants is controlled in part by the PKG protein

(D) The behavior of soldier ants is controlled in part by the PKG protein