Which of the following characteristics are shared by echinoderms? Radial symmetry and exoskeleton Triploblastic protostomes with pseudocoelom Triploblastic deuterostomes with eucoelom and pentaradial symmetry Bilateral symmetry and exoskeleton

Triploblastic deuterostomes with eucoelom and pentaradial symmetry

How do echinoderms reproduce? Asexually through fission and sexually through internal fertilization Only asexually through budding Only sexually through internal fertilization Asexually through regeneration and sexually through external fertilization

Asexually through regeneration and sexually through external fertilization

What is the skeletal system of echinoderms composed of? Endoskeleton made of calcium carbonate plates called ossicles Exoskeleton made of chitin Exoskeleton made of calcium phosphate Endoskeleton made of cartilage

Endoskeleton made of calcium carbonate plates called ossicles

What is Aristotle's lantern in sea urchins? A chewing apparatus with 35 ossicles A light-emitting organ A reproductive structure A sensory organ for detecting light

A chewing apparatus with 35 ossicles

What is the function of the water vascular system in echinoderms? Controls locomotion and feeding through a hydraulic system Aids in reproduction Provides structural support Facilitates respiration

Controls locomotion and feeding through a hydraulic system

What is the madreporite in echinoderms? A sensory organ for detecting light A reproductive organ A porous plate for seawater entry located on the aboral surface A feeding structure

A porous plate for seawater entry located on the aboral surface

What is the function of the stone canal in echinoderms? Links the nervous system to the muscular system Connects the madreporite to the ring canal Connects the digestive system to the excretory system Distributes nutrients to each arm

Connects the madreporite to the ring canal

What is the role of the ring canal in echinoderms? Aids in digestion Facilitates reproduction Connects the madreporite to the stone canal Distributes seawater to each arm

Distributes seawater to each arm

What is the function of the radial canal in echinoderms? Facilitates respiration Connects the madreporite to the ring canal Distributes nutrients throughout the body Extends from the ring canal into each arm

Extends from the ring canal into each arm

What is the function of the ampulla in echinoderms? Aids in digestion Muscles relax and contract to fill and empty tube feet Provides structural support Facilitates reproduction

Muscles relax and contract to fill and empty tube feet

What are the secondary male sex characteristics? testosterone production, libido, and sperm count hair distribution, deep voice, and odiferous sweat height, weight, and body mass index muscle mass, bone density, and facial hair

hair distribution, deep voice, and odiferous sweat

Why do sperm have large mitochondria? to increase motility to facilitate fertilization to survive in the hypoxic environment to enhance energy production

to survive in the hypoxic environment

What does the brain-testicular axis involve? cerebellum- testosterone regulation hypothalamus- GnRH release, pituitary- FSH and LH thalamus- libido control medulla oblongata- sperm production

hypothalamus- GnRH release, pituitary- FSH and LH

What property of DNA is illustrated by bacterial transformation? DNA is antiparallel DNA can move into other bacteria and function DNA is double-stranded DNA is composed of nucleotides

DNA can move into other bacteria and function

Which of the following is a nucleotide found in DNA? Deoxyribose + phosphate group + adenine Deoxyribose + phosphate group + cytosine Ribose + phosphate group + uracil Ribose + phosphate group + thymine

Deoxyribose + phosphate group + cytosine

How did Rosalind Franklin contribute to the understanding of DNA? Isolating DNA from cells Discovering the double helix structure Producing images of DNA molecules using X-rays Identifying the base pairing rules

Producing images of DNA molecules using X-rays

What are the three joints that comprise the elbow? Humeroradial, Distal Radioulnar, Proximal Radioulnar Humeroradial, Humeroulnar, Proximal Radioulnar Humeroradial, Humeroulnar, Distal Radioulnar Humeroulnar, Distal Radioulnar, Proximal Radioulnar

Humeroradial, Humeroulnar, Proximal Radioulnar

What is the main function of the complement system in the body, particularly in relation to extracellular pathogens? Destroying intracellular pathogens Regulating blood pressure Coating extracellular pathogens Producing antibodies

Coating extracellular pathogens

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