Advanced Definitions for ACT Biology
Monocot = flowering plant whose seeds have one embryonic leaf (cotyledon) Dicot = plant with seed with two embryonic leaves (cotyledons)
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Scientific Terms to Know for Standardized Tests
– Peduncle: the stalk of a flower – Receptacle: the part of a flower stalk where the parts of the flower are attached – Sepal: the outer parts of the flower (often green and leaf-like) that enclose a developing bud – Stamen: the pollen producing part of a flower, usually with a slender filament supporting[…]
Know the Parts of the Cell
– Cell wall: surrounds/protects cell (only in plant cells) – Cell membrane: controls movement of materials into and out of the cell (active/passive transport) – Cytoplasm: watery area of movement – Mitochondria: produces/supplies energy – Chloroplasts: contain chlorophyll (capture sunlight) [only in plants] – Vacuoles: store food/water/chemicals – Nucleus: regulars.controls cell activities – Nuclear membrane:[…]
Facts About the Cell – ACT Science
What is mitosis? Mitosis is the process of cell division. One cell becomes two cells with full chromosomal identity. Stages of mitosis: 1. Prophase 2. Metaphase 3. Anaphase 4. Telephase Cytokinesis begins in anaphase or telephase. Cytokinesis is the division of the cytoplasm into 2 new cells.
The Structure of a Molecule – ACT Prep
The center of an atom is a nucleus. In the nucleus, there are 2 subatomic particles: protons (positive charge) and neutrons (neutral charge). Outside of the nucleus are electrons. The energy of an electron is in shells. An atom is a single nucleus with a positive charge surrounded by a cloud of negatively charged electrons.[…]
What is a Circuit? ACT / SAT
A circuit is a complete path that electricity flows through. There is a source of electricity (battery). Conductors are the materials that allow electric current to pass through them easily. Conductors like the positive and negative ends of a battery. In a closed circuit, the electricity flows without any interruptions. Ohm’s Law: Voltage (V); Current[…]
Practice Math for the SAT & ACT!
x² + y² = 167 y = −3x Solve for x and y.
Math Practice
y > 4x − 2 6x > 15 Find the y-coordinates of all the points that satisfy this system of inequalities.
Try Sample SAT/ACT Math
234 people went on a camping trip, taking 68 tents with them. Some of the tents held 2 people, and the rest held 4 people. If all the tents were filled to capacity and every person slept in a tent, how many of the tents were 4-person tents?
Example Math Problem
z(x) = 5x − 2 h(x) = 2 − 3z(x) What is the value of h(1)?