Why do humans need cellulose in their diet even though they do not possess enzymes in the digestive system that can break it down?
A. It is required as a precursor to synthesise DNA and proteins.
B. It provides the structural material for cell walls.
C. It acts as dietary fibre to help move food through the digestive system more quickly.
D. It acts as a storage source for energy.
Select your answer:
Topics:
Effect of Exercise on Cardio Respiratory System & Muscular Heart Vocab and Blood Flow Pathway Cell Theory and Microbiology Vet Terminology Understanding Psychology Nervous System Advanced Stretching SM2 Viruses Vital Signs Energy and Metabolism Trichology Germs Nervous System Beneath the Skin Inner Ear Neuroanatomy Skin StructureOther quiz:
EMR - Trauma › ViewBones broken in several places are classified as:
A. angulated
B. comminuted
C. sprain
D. fracture
Endocrine System › View
The endocrine glands are ductless glands. Therefore, the hormones are secreted directly into the blood flow. Although the hormones are transported throughout the body in the blood, the hormones only influence and affect specific target cells because
A. The hormones have specific molecule receptors
B. The target cells have specific molecule receptors on its membrane surface
C. The walls of blood capillaries are only permeable to a certain type of hormone
D. The hypothalamus controls the hormone to be transported to the target cell