Worksheets80 qustions final review
Total questions: 80
Worksheet time: 40mins
Which of the following correctly matches the phylum with its key feature?
Arthropoda – water vascular system
Annelida – stinging cells
Mollusca – mantle and foot
Cnidaria – jointed appendages
An animal that is radially symmetrical as an adult, uses a water vascular system, and is a deuterostome is most likely a:
Sea star
Earthworm
Clam
Spider
Which is the correct order of animal complexity from simplest to most complex?
Cnidarians → Sponges → Arthropods → Mammals
Sponges → Cnidarians → Flatworms → Arthropods
Sponges → Flatworms → Cnidarians → Arthropods
Flatworms → Sponges → Mollusks → Echinoderms
Which of the following is NOT correctly matched to its body cavity type?
Flatworms – acoelomate
Roundworms – pseudocoelomate
Earthworms – coelomate
Sponges – coelomate
Which trait is unique to arthropods compared to other invertebrates?
Segmentation
Jointed appendages and chitin exoskeleton
Radial symmetry
Stinging cells
Which of the following is true about cephalization?
It is most associated with radial symmetry.
It is found in animals without nervous tissue.
It is the concentration of sense organs at the anterior end.
It only occurs in deuterostomes.
A worm with segmentation, a closed circulatory system, and a true coelom is most likely a:
Nematode
Flatworm
Annelid
Cnidarian
Which statement about mollusks is accurate?
All mollusks have an external shell.
The mantle secretes the shell in many mollusks.
All mollusks are filter feeders.
Mollusks are acoelomates.
Which characteristic is shared by all chordates?
Exoskeleton
Radial symmetry
Notochord
Water vascular system
A developing animal whose blastopore becomes the anus is a:
Protostome
Deuterostome
Acoelomate
Pseudocoelomate
Which pair is mismatched?
Cnidarian – gastrovascular cavity
Echinoderm – water vascular system
Arthropod – molting
Sponge – complete digestive tract
Which group has no true tissues?
Porifera
Cnidaria
Mollusca
Annelida
Which adaptation helped arthropods thrive on land?
Water vascular system
External fertilization only
Jointed appendages and exoskeleton
No respiratory organs
Bilateral symmetry is associated with:
Sessile lifestyle
Filter feeding
Directional movement and cephalization
Radial development
A parasitic flatworm that absorbs nutrients across its surface is likely a:
Planarian
Tapeworm
Nematode
Polychaete
Protostomes differ from deuterostomes in that protostomes:
Have no germ layers
Are all acoelomates
Form the mouth first from the blastopore
Lack segmentation
Which is an example of negative feedback?
Labor contractions increasing
Platelet plug formation
Shivering when body temperature drops
Oxytocin release intensifying
Which tissue has tightly packed cells with minimal extracellular matrix?
Connective
Muscle
Epithelial
Nervous
Which is NOT connective tissue?
Bone
Cartilage
Blood
Smooth muscle
Cardiac muscle is similar to skeletal muscle because it:
Is voluntary
Is striated
Lines hollow organs
Lacks striations
What is the correct order in a homeostatic feedback loop?
Effector → Sensor → Integrator
Sensor → Integrator → Effector
Integrator → Effector → Sensor
Effector → Integrator → Sensor
The hypothalamus functions as:
A blood pump
A urine reservoir
The main homeostatic control center
A digestive enzyme producer
Which statement describes skeletal muscle?
Involuntary and in heart
Lines digestive organs
Voluntary and attached to bone
Lacks striations
An organ is:
A group of similar cells
A group of tissues working together
A group of organ systems
A single cell
Blood returning from systemic circulation enters the:
Left atrium
Right atrium
Right ventricle
Left ventricle
The pulmonary artery carries:
O-rich blood to lungs
O-poor blood to lungs
O-rich blood to body
O-poor blood to body
Which vessel has the thickest walls?
Veins
Capillaries
Arteries
Venules
Venous return decreases when:
Muscle contractions increase
Venous valves fail
Blood volume increases
Heart rate increases
Gas exchange occurs in:
Arteries
Capillaries
Veins
Lymph vessels
Low RBC count causes:
Increased immunity
Reduced oxygen transport
Increased clotting
Increased blood pressure
Which blood component is correctly matched?
Platelets — oxygen transport
RBCs — immunity
Plasma — transports dissolved substances
WBCs — clotting
A blockage in a coronary artery reduces blood flow to the:
Lungs
Brain
Heart muscle
Kidneys
The SA node:
Prevents backflow
Sets the heart pace
Clots blood
Filters blood
Which structure prevents food from entering the trachea?
Larynx
Epiglottis
Uvula
Pharynx
Oxygen moves from alveoli into blood by:
Active transport
Osmosis
Diffusion
Bulk flow
If the diaphragm cannot contract, what happens?
Inhalation is impaired
Exhalation is impaired
Blood pressure drops
Heart rate increases
High CO2 causes breathing to:
Slow
Increase
Stop
Reverse
Correct path of air:
Trachea → larynx → bronchi → alveoli
Bronchi → pharynx → bronchioles → alveoli
Pharynx → larynx → trachea → bronchi → alveoli
Nose → esophagus → lungs
Emphysema decreases:
Blood clotting
Gas exchange surface area
Enzyme production
Urea formation
Breathing rate increases during exercise because:
O2 rises
Temperature drops
CO2 production rises
Blood flow decreases
Mucus and cilia in airways:
Boost O2 absorption
Trap and remove pathogens
Create surfactant
Control blood pH
The nephron:
Pumps blood
Sends urine out of body
Filters blood and forms urine
Produces hormones
Filtration occurs in the:
Loop of Henle
Glomerulus
Collecting duct
Urethra
What is normally reabsorbed?
Urea
Glucose and amino acids
Toxins
Proteins
ADH causes:
More urine
More water reabsorption
Less salt reabsorption
More urea production
If ADH decreases:
Urine becomes concentrated
Urine becomes dilute
Urine stops forming
Urine becomes acidic
Loop of Henle creates:
pH balance
Salt gradient
Urine storage
Blood cells
Urine flows from kidney to bladder via:
Urethra
Nephron
Ureter
Collecting duct
Kidneys regulate:
Blood pressure only
Blood glucose
Water and electrolyte balance
Hormone secretion
Stomach function:
Major nutrient absorption
Protein digestion
Fat digestion
Carbohydrate absorption
Which enzyme matches its substrate?
Amylase – fats
Pepsin – proteins
Lipase – starch
Trypsin – DNA
Bile function:
Digest carbs
Emulsify fats
Digest proteins
Produce RBCs
Most digestion/absorption occurs in:
Mouth
Stomach
Small intestine
Large intestine
Villi increase:
Enzyme secretion
Absorption surface area
Bile production
Stomach acid
Liver role:
Stores urine
Makes bile, detoxifies
Produces all enzymes
Produces CO2
Pancreas releases:
Bile only
Enzymes + bicarbonate
Only bicarbonate
Only enzymes
Large intestine:
Absorbs most nutrients
Absorbs water
Makes bile
Digests proteins
Innate immunity includes:
Antibodies
Memory cells
Skin barrier
Vaccination
Plasma cells:
Kill viruses
Produce antibodies
Produce histamine
Filter blood
Helper T cells:
Kill infected cells
Activate B and T cells
Make antibodies
Digest pathogens
Cytotoxic T cells kill using:
Antibodies
Perforin
Mucus
Enzymes
Vaccines work by:
Killing pathogens
Producing memory cells
Removing toxins
Increasing RBCs
HIV destroys:
B cells
Helper T cells
RBCs
Platelets
Inflammatory response includes:
Lowered temperature
Redness, swelling, heat, pain
High blood sugar
Increased urine output
Autoimmune disease occurs when:
Pathogens multiply
Immune system attacks body cells
Memory cells fail
Antibodies decrease
Endocrine glands:
Use ducts
Release hormones into blood
Store urine
Produce mucus
ADH function:
Raises blood sugar
Increases water reabsorption
Reduces metabolism
Increases urine volume
Low thyroid hormone causes:
High metabolic rate
Low metabolic rate
Increased calcium
Decreased water reabsorption
The pituitary is the master gland because it:
Controls breathing
Directly controls all organs
Regulates other endocrine glands
Filters toxins
Fight-or-flight is triggered by:
Thyroid gland
Adrenal medulla
Pancreas
Parathyroid
Hormone released when blood glucose is HIGH:
Insulin
Glucagon
Cortisol
ADH
Steroid hormones:
Bind cell surface receptors
Cannot enter cells
Enter nucleus and affect gene expression
Function like antibodies
Type 1 diabetes is caused by:
Insulin resistance
Autoimmune destruction of beta cells
High insulin production
Excess glucagon
Sperm are made in the:
Epididymis
Seminiferous tubules
Vas deferens
Urethra
LH surge triggers:
Menstruation
Sperm production
Ovulation
Fertilization
Fertilization occurs in the:
Ovary
Uterus
Cervix
Oviduct
Implantation occurs in the:
Cervix
Endometrium
Ovary
Oviduct
Progesterone:
Causes ovulation
Maintains uterine lining
Raises blood sugar
Produces milk
hCG is produced by the:
Ovary
Embryo (trophoblast)
Placenta only at birth
Pituitary
The scrotum:
Warms the testes
Keeps testes cool
Produces testosterone
Stores sperm
