Levels of Biological Organization
It is the scientific study of life and living organisms
BIOLOGY
What plant organ is primarily responsible for absorbing water and minerals from the soil?
Roots
What body system in humans and mammals acts as the control center, receiving information and sending signals to direct responses?
What organelle is widely referred to as the "powerhouse of the cell" because it converts nutrients into usable energy?
MITOCHONDRIA
What type of organisms are plants considered because they can produce their own food through photosynthesis?
Autotrophs
What is the broadest level of biological organization that includes all of Earth where life exists?
A) Ecosystem
B) Community
C) Population
D) Biosphere
D) Biosphere
Which plant structure functions as the transport pathway to move water, nutrients, and food across the plant?
A) Flower
B) Stem
C) Root hair
D) Thylakoid
B) Stem
What specific endocrine disorder begins when the body cannot properly produce or use insulin, leading to high blood sugar?
DIABETES
What is the primary chemical energy currency molecule produced in cells during cellular respiration?
A) DNA
B) ATP
C) NADP+
D) Cellulose
B) ATP
Why must animals obtain nutrients by consuming other organisms, classifying them as heterotrophs?
A) They lack mitochondria completely
B) They cannot produce their own food internally
C) They rely exclusively on anaerobic fermentation
D) They do not require ATP for muscle movement
B) They cannot produce their own food internally
Which level of biological organization consists of all the individuals of the same species living in a specific area?
A) Ecosystem
B) Community
C) Population
D) Organism
C) Population
What specific plant organs serve as the main sites of photosynthesis, capturing sunlight to produce glucose?
Leaves
What system in animals is responsible for breaking down food and absorbing nutrients?
DIGESTIVE SYSTEM
Which cell structures found only in plant cells capture light energy to drive photosynthesis?
During photosynthesis, in which specific part of the chloroplast do the light reactions take place?
Thylakoid membranes
Which level of biological organization consists of two or more atoms bonded together?
A) Organelle
B) Molecule
C) Cell
D) Tissue
B) Molecule
In flowering plants, what is the primary role of flowers after fertilization occurs?
A) Absorb mineral ions from the soil
B) Transport synthesized sugars downward
C) Develop into a fruit that protects seeds and supports dispersal
D) Conduct the initial light reactions of photosynthesis
C) Develop into a fruit that protects seeds and supports dispersal
Which body system works directly with the skeletal system to support movement, posture, and stability? A) Muscular system
B) Endocrine system
C) Digestive system
D) Excretory system
A) Muscular system
What cell part regulates the entry of nutrients and oxygen into the cell?
Cell membrane
What green pigment gives leaves their color and absorbs sunlight during photosynthesis?
Chlorophyll
What is a single living individual, such as a single rice plant or animal, called?
ORGANISM
What specific sugar is produced by leaves during photosynthesis to serve as the plant's primary energy source?
GLUCOSE (C6H12O6)
What body system includes the kidneys and bladder to filter metabolic waste from the blood?
EXCRETORY SYSTEM
Which organelle stores water, nutrients, and substances that help maintain cell stability?
VACOULE
What gas is released into the environment when water molecules are split during the light reactions of photosynthesis?
OXYGEN