Covalent bonds form when A. electrons are shared between two atoms. B. neutrons
ID: 86196 • Letter: C
Question
Covalent bonds form when A. electrons are shared between two atoms. B. neutrons are transferred from one atom to another. D. protons are lost from atoms. E. atomic nuclei fuse. The type of muscle that function as a sphincter is A. pennate. B. orbicular. C. unipennate. D. rhombohedral. E. straight. The predominant lipid in the cell membrane is a A. prostaglandin B. cholesterol. C. triglyceride. D. glycolipid. E. phospholipid. Which tissue type forms glands? A. muscle B. epithelial C. glandular D. connective E. nervous The plasma membrane is selectively permeable. This means A. only gases and water can pass through it. B. substances need permission to pass through it. C. substances need carrier molecules to pass through it. D. only certain substances can pass through it. E. ATP is always needed to move molecules across the plasma membrane.Explanation / Answer
88.The correct answer is:A.electrons are shared between two atoms.
Reason:Covalent bond is formed betwee two atoms by sharing of electrons between them.
89.The correct answer is:B.orbicular
Reason.Orbicularis oculi muscle around the eye is an example of sphincter muscle.
90.The correct answer is:E.Phospholipid
Reason: Phospholipids form major part of plasma membrane.
91.The correct answer is:B.epithelial
Reason:Epithelial tissue form glands.
92.The correct answer is:D.only certain substances can pass through it.
Reason:Selectively permeable means some substances can pass through it while some cannot.