Q: How many valence electrons does carbon have? Read this paragraph and choose the correct option from the provided answers: Carbon has four valence electrons, so it can achieve a full outer energy level by forming four covalent bonds. When it bonds only with hydrogen, it forms compounds called hydrocarbons. Choices: - one - five - two - four A:
four

Q: What is the largest organelle in a eukaryotic cell? Read this paragraph and choose the correct option from the provided answers: The nucleus is the largest organelle in a eukaryotic cell. It contains most of the cell's DNA. DNA, in turn, contains the genetic code. This code "tells" the cell which proteins to make and when to make them. You can see a diagram of a cell nucleus in Figure below . Besides DNA, the nucleus contains a structure called a nucleolus. Its function is to form ribosomes. The membrane enclosing the nucleus is called the nuclear envelope. The envelope has tiny holes, or pores, in it. The pores allow substances to move into and out of the nucleus. Choices: - ribosome - vacuole - mitochondria - nucleus A:
nucleus

Q: Q: Isotopes are named for their number of ______ plus neutrons? Read this paragraph and choose the correct option from the provided answers: Isotopes are named for their number of protons plus neutrons. If a carbon atom had 7 neutrons, what would it be named?. Choices: - electrons - atoms - nuclei - protons A:
A: protons

Question: Q: Where do most skin structures originate in? Read this paragraph and choose the correct option from the provided answers: Layers of Human Skin. The outer layer of the skin is the epidermis, and the inner layer is the dermis. Most skin structures originate in the dermis. Choices: - epidermis - cuticle - hypodermis - dermis A:
Answer: dermis

*Question*
Q: What process refers to the changes that occur in populations of living organisms over time? Read this paragraph and choose the correct option from the provided answers: The term evolution describes the changes that occur in populations of living organisms over time. Describing these changes does not address the origin of life. The two are commonly and mistakenly confused. Biological evolution likewise says nothing about cosmology, the Big Bang, or where the universe, galaxy, solar system, or Earth came from. Choices: - spontaneous mutation - adaptation - variation - evolution A:
**Answer**
evolution

(Question)
Q: Water is a versatile solvent that can dissolve many ionic and polar molecular solutes to make what? Read this paragraph and choose the correct option from the provided answers: Water is a versatile solvent that can dissolve many ionic and polar molecular solutes to make aqueous solutions. Choices: - chloride solutions - sulfate solutions - sulfide solutions - aqueous solutions A:
(Answer)
aqueous solutions