Answer the following question given this paragraph: Two DNA strands link together in an antiparallel direction and are twisted to form a double helix. The nitrogenous bases face the inside of the helix. Guanine is always opposite cytosine, and adenine is always opposite thymine. Q: What is formed when two dna strands link together in an antiparallel direction and are twisted? Choices: - guanine - anti-helix - RNA - double helix A:
double helix
(Question)
Answer the following question given this paragraph: Q: What kind of reproduction requires the fusion of male and female gametes? Choices: - autonomous reproduction - asexual reproduction - subject reproduction - sexual reproduction A:
(Answer)
sexual reproduction
Ques: Answer the following question given this paragraph: An atomic orbital is a region of space around an atom that has a non-zero probability for an electron with a particular energy. Analogously, a molecular orbital is a region of space in a molecule that has a non-zero probability for an electron with a particular energy. Both an atomic orbital and a molecular orbital can contain two electrons. Q: What term describes a region of space around an atom that has a non-zero probability for an electron with a particular energy? Choices: - orbital lobe - minimal orbital - related orbital - atomic orbital A:
Ans: atomic orbital
(Q).
Answer the following question given this paragraph: Modern plants that live in water are called aquatic plants . Living in water has certain advantages for plants. One advantage is, well, the water. There's plenty of it and it's all around. Therefore, most aquatic plants do not need adaptations for absorbing, transporting, and conserving water. They can save energy and matter by not growing extensive root systems, vascular tissues, or thick cuticle on leaves. Support is also less of a problem because of the buoyancy of water. As a result, adaptations such as strong woody stems and deep anchoring roots are not necessary for most aquatic plants. Q: What type of plants do not typically require deep roots or woody stems? Choices: - surface plants - dry plants - bacterial plants - aquatic plants A:
(A).
aquatic plants
Ques:Answer the following question given this paragraph: A solution of cobalt chloride in water is pink due to the presence of the solvated Co 2+ ion. If sufficient HCl is added, the solution turns blue as the CoCl 4 2- ion forms. The reaction can be shifted back to the pink form if more water is added to the solution. Q: What causes cobalt chloride to turn pink? Choices: - discussed 2 + ions - show 2 + ions - h20 + ions - co 2+ ions A:

Ans:co 2+ ions
Answer the following question given this paragraph: DNA consists of two long chains of nucleotides. Nitrogen bases on the two chains form hydrogen bonds with each other. Adenine always bonds with thymine, and guanine always bonds with cytosine. These bonds hold the two chains together and give DNA is characteristic double helix, or spiral, shape. You can see the shape of the DNA molecule in Figure below . Sugars and phosphate groups form the "backbone" of each chain of DNA. The bonded bases are called base pairs. RNA, in contrast to DNA, consists of just one chain of nucleotides. Determining the structure of DNA was a big scientific breakthrough. You can read the interesting story of its discovery at the URL below. Q: Dna consists of how many long chains of nucleotides? Choices: - three - zero - one - two A:
two