Q: Every chemical reaction occurs with a concurrent change in what? Read this paragraph and choose the correct option from the provided answers: Every chemical reaction occurs with a concurrent change in energy. Choices: - neutrons - mass - hydrogen - energy A:
energy

(Question)
Q: Vertebrates are all chordates that have a what? Read this paragraph and choose the correct option from the provided answers: Living species of chordates are classified into three major subphyla: Vertebrata, Urochordata, and Cephalochordata. Vertebrates are all chordates that have a backbone. The other two subphyla are invertebrate chordates that lack a backbone. Members of the subphylum Urochordata are tunicates (also called sea squirts). Members of the subphylum Cephalochordata are lancelets . Both tunicates and lancelets are small and primitive. They are probably similar to the earliest chordates that evolved more than 500 million years ago. Choices: - circulatory system - fossil - brain - backbone A:
(Answer)
backbone

Ques: Q: Circadian rhythms and migration are examples of what kind of behaviors in animals? Read this paragraph and choose the correct option from the provided answers: Many animal behaviors occur in a regular cycle. Two types of cyclic behaviors are circadian rhythms and migration. Choices: - continual - fluid - finite - cyclic A:
Ans: cyclic

(Q).
Q: What term refers to a group of individuals of the same species that live in the same area and is the unit of natural selection, adaptation, and microevolution? Read this paragraph and choose the correct option from the provided answers: A population is a group of individuals of the same species that live in the same area. The population is the unit of natural selection, adaptation, and microevolution. In ecology, how large a population is and how quickly it is growing are often used as measures of a species' health. Choices: - ecosystem - taxonomy - community - population A:
(A).
population

Ques:Q: What is transferred in an acid-base reaction Read this paragraph and choose the correct option from the provided answers: Acid-base reactions involve a transfer of a hydrogen ion instead of an electron. Acid-base reactions, like the one below, are also not redox reactions. Choices: - bonding ion - friendly ion - calcium ion - hydrogen ion A:

Ans:hydrogen ion

Ques: Q: What is the term for crops that are genetically modified with new genes that code for traits useful to humans? Read this paragraph and choose the correct option from the provided answers: Biotechnology has been used to create transgenic crops. Transgenic crops are genetically modified with new genes that code for traits useful to humans. The diagram in Figure below shows how a transgenic crop is created. You can learn more about how scientists create transgenic crops with the interactive animation "Engineer a Crop: Transgenic Manipulation" at this link: http://www. pbs. org/wgbh/harvest/engineer/transgen. html . Choices: - mutant - embryonic - carcinogenic - transgenic A:
Ans:
transgenic