Q: Carbon released by burning fossil fuels contributes to what effect in the atmosphere? Read this paragraph and choose the correct option from the provided answers: Burning of fossil fuels, such as oil, releases carbon into the atmosphere. This carbon must be cycled - removed from the atmosphere - back into living organisms, or it stays in the atmosphere. Increased carbon in the atmosphere contributes to the greenhouse effect on Earth. Choices: - shielding effect - smog effect - cloud effect - greenhouse effect A:
greenhouse effect

(Question)
Q: Mollusks, annelids, and arthropods are considered what? Read this paragraph and choose the correct option from the provided answers: Mollusks, annelids, and arthropods are protostomes. Echinoderms and chordates are deuterostomes. This distinction is important. Why does it matter? It shows that echinoderms are more closely related to chordates than are the other invertebrate phyla. This is not apparent based on other, more obvious traits. Choices: - protisines - detritivores - micelles - protostomes A:
(Answer)
protostomes

Ques: Q: What kind of proteins either activate or deactivate the transcription of other genes? Read this paragraph and choose the correct option from the provided answers: What makes the heart form during development? What makes the skin form? What makes a structure become an arm instead of a leg? These processes occur during development because of a highly specific pattern of gene expression. This intensely regulated pattern of gene expression turns genes on in the right cell at the right time, such that the resulting proteins can perform their necessary functions to ensure proper development. Transcription factors play an extremely important role during development. Many of these proteins can be considered master regulatory proteins , in the sense that they either activate or deactivate the transcription of other genes and, in turn, these secondary gene products can regulate the expression of still other genes in a regulatory cascade. Homeobox genes and gap genes are important classes of transcription factors utilized during development. Choices: - carbon proteins - perfect regulatory proteins - master complex proteins - master regulatory proteins A:
Ans: master regulatory proteins

(Q).
Q: Glucose, galactose, and fructose are all what? Read this paragraph and choose the correct option from the provided answers: Figure 3.5 Glucose, galactose, and fructose are all hexoses. They are structural isomers, meaning they have the same chemical formula (C6H12O6) but a different arrangement of atoms. Choices: - alucoxes - structoxes - fluxes - hexoses A:
(A).
hexoses

Ques:Q: What is the name for electrons closer to the nucleus that do not participate in bonding? Read this paragraph and choose the correct option from the provided answers: Core electrons are the electrons that are closer to the nucleus and therefore do not participate in bonding. Choices: - surface electrons - radical electrons - odd electrons - core electrons A:

Ans:core electrons

Ques: Q: Most food chains and webs have a maximum of how many trophic levels? Read this paragraph and choose the correct option from the provided answers: A trophic level is a feeding position in a food chain or food web. Most food chains and webs have a maximum of four trophic levels. There is less energy and biomass at higher trophic levels. Choices: - 3 - 10 - 6 - 4 A:
Ans:
4