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Biology & Geology

Chapter 2 - Hormonal Coordination in Living Organisms

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Chapter 3 - Reproduction in Living Organisms

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Chapter 4 - Immunity in Living Organisms

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Chapter 5 - Molecular Biology - DNA Structure and Function

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Chapter 6 - Molecular Biology - RNA, Protein Synthesis and Genetic Engineering

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Quiz

Lesson 1 Quiz: Support in Plants and the Human Skeletal System

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1.
Tissue that completely lacks blood vessels and is nourished by diffusion from neighboring bone cells is:
Dense bone tissue
Muscle tendons
Cartilaginous tissue
Fibrous ligaments
2.
A neuromuscular connection (neuromuscular synapse) is found at a connection site:
Dendritic branching with sensory nerve fiber
One muscle with another adjacent muscle
Actin filament with myosin filament
Terminal branching of the axon of a motor neuron with the motor end plate of a muscle fiber
3.
The adrenal medulla is stimulated to secrete the emergency hormones adrenaline and noradrenaline via:
High blood sugar
ACTH hormonal stimulation
Rapid and direct sympathetic nervous stimulation in cases of fear, fight, and flight
Body temperature change
4.
The hormone glucagon raises the concentration of glucose in the blood by stimulating the breakdown of glycogen stored in:
Liver cells only
Liver and muscle cells together
Muscle cells only
Adipose tissue only
5.
The lymphocytes responsible for secreting specific antibodies in humoral immunity are:
Natural killer (NK) cells
Macrophages
Helper T cells (TH)
Plasma B cells
6.
The chemical compound secreted by mast cells and basal white blood cells that is responsible for the widening of blood vessels and symptoms of inflammation is:
Interleukin
Heparin
Albumin
Histamine
7.
Telomeres are found at the ends of eukaryotic chromosomes and perform an important function in:
Synthesis of enzymes
Centromere doubling
Protecting chromosomes from corrosion and merging with each other and maintaining their structure
Construction of ribosomes
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