UPCAT Reviewer: Science

solvent

In a solution the substance that does the dissolving is called?

waters polarity and small molecular size

Water is a good solvent due to

a saturated solution

A solution that cannot hold any more solute at room temperature would be?

a solution between two miscible liquids

Ethanol dissolved in water would be an example of?

reducing the amount of solute

To form a supersaturated solution requires

sugar dissolving in water

Which one is an example of a physical change

boiling an egg

Which one is not an example of physical change

different to the chemicals before the change

The chemical after a chemical change have properties

definite proportions

Heptane is always composed of 84.0% carbon and 16.0% hydrogen. This illustrates the law of

21

Given the mass number for an atom that has 10 protons, 10 electrons and 11 neutrons

faster

compared to a glass of ice water with ice in it, a glass of plain ice-cold water without ice on a warm day will warm up

increased temperature and increased concentrations of reactants

which conditions will increase the rate of chemical reaction?

when ions are present they are attracted to electrodes having a opposite electrical change

one can conclude that..

Inertia

Unless an object at rest is acted upon by a force, it stays rest due to?

22.5

Marlon rode on his bile from 9:00 am to 10:30am. If he drove at an average speed of 15kph, what was the total distance he covered?

unbalanced forces

acceleration in the body is due to

A ball rolls along a frictionless plane at a uniform speed

Which is/are NOT an accelerated motion?

200 J

A 200 N box is pushed up an incline that is 5.00 m long and rises 1.00 m. If the incline is friction less then the work done by pushing force is?

most wavelength of the visible spectrum except red

A gem or mineral that is red absorbs?

4000 W

A 2000kg car accelerated from rest to velocity of 20m/s in 10 seconds. The power of engine during the acceleration is?

water displacement

a student wishes to find the density of an irregular piece of rock, how will she use to find the volume?

cooler and less luminous

as a star exhaust hydrogen in its core, it becomes..

Gnomon

an upright stick that is allowed to cast a shadow in sunlight?

when the sun is near the line of nodes of the moon and the moon is new or full

when does solar or lunar eclipse occur?

wheelbarrow

which is not considered as a simple machine?

Pulley

A simple machine that consists of a rope that fits into a groove in a wheel

Equinox

Each of the two times of the year when days and nights are of equal length

length x width x height

Used to calculate the volume of a regular object

electrostatic force

The force between electrically charged objects (like charges repel and opposite charges attract each other).

saturated solution

a solution that cannot dissolve any more solute under the given conditions

soluble

capable of being dissolved

alkene

A hydrocarbon that contains one or more double bond.

alkyne

hydrocarbon that contains triple bond

cells

in biological levels, which one is considered as the smalles or lowest level?

tissues

Groups of cells with a common structure and function.

regulating materials that enter or leave the system

which one is not a property of life?

capsule

A slippery outer covering in some bacteria that protects them from phagocytosis by host cell

prokaryotic cell have more complex cell walls

which is not a difference between prokaryotic and eukaryotic cells?

eukaryotic cell have cilia and flagella with complex structure

the difference between a prokaryotic and eukaryotic cells is

grows with the shortest generation time

the optimum temperature for an organism

leaves, roots, seeds

In plants, what part stores sugars as starch

Leaves and roots

What parts of a plant are damaged by acidic rain?

Flagellum

A long, hairlike structure that grows out of a cell and enables the cell to move.

cell wall

A rigid structure that surrounds the cell membrane and provides support to the cell

all energy requiring processes in cells

ADP energy is used for?

synthetic reaction

a reaction in which two or more substances combine to form a new compound

active transport

Energy-requiring process that moves material across a cell membrane against a concentration difference

anchor organelles, give the cell shape, allow organelles to move.

give a function of a cytoskeleton of the cell

just allow organelles to move.

give a function of a cytoskeleton of the cell

20

a red blood cell plasma membrane contains over ___ different types of protein

metaphase

during _____, the chromosomes are being attached to the spindle

Prometaphase

The second stage of mitosis, in which the nuclear envelope fragments and the spindle microtubules attach to the kinetochores of the chromosomes.

Anaphase

Phase of mitosis in which the chromosomes separate and move to opposite ends of the cell

wall

Protoplasts are cells without ___

Cytoplasms

region of the cell with in the membranes which includes all organelles excpet the nucleus

nucleus

A part of the cell containing DNA and RNA and responsible for growth and reproduction

membrane

thin layer of tissue that covers a surface, lines a cavity, or divides a space or organ

Sporozoa

protozoa with no means of locomotion

Ciliates

A group of protozoans that move by waving tiny, hair-like organelles called cilia.

amoeboid

type of protozoa, such as Amoeba, that moves with pseudopods

Zooflagellates

animal-like protists that have one or more flagella at some point in their life cycle

Dihybrid

A cross in which true-breeding plants differ in two traits is known as _____ cross

Hybrid

An organism that has two different alleles for a trait, anything of mixed origin