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7th TCAP science review

Total questions: 54

Worksheet time: 43mins

Name
Class
Date
1.

Which organelle allows cells to maintain a stable internal environment?

a)

cell membrane by separating the cell from the outside environment

b)

ribosomes by making protein

c)

chloroplasts by absorbing sunlight

d)

nucleus by controlling cell activities

2.

when WATER is moved across a cell membrane.

a)

osmosis

b)

diffusion

c)

photosynthesis

d)

cell reespiration

3.

PRODUCTS are glucose and oxygen

a)

osmosis

b)

diffusion

c)

photosynthesis

d)

cell reespiration

4.

REACTANTS (what you start with) are glucose and oxygen

a)

osmosis

b)

diffusion

c)

photosynthesis

d)

cell reespiration

5.

A cell is placed in a saltwater solution with the same concentration as inside the cell. What will happen?

a)

it will stay the same size

b)

it will shrink

c)

it will burst

d)

all of these

6.

Which of these terms describe a cell membrane?

a)

semi-permeable

b)

non-permeable

7.

Why is Christmas moss classified in the plant kingdom?

a)

it grows in tropical environments

b)

it has a cell wall and chloroplasts

c)

it grows on rocks and trees

d)

it is green

8.

B = brown fur b = white fur

In the punnett square, what is the probability for white fur?

a)

0%

b)

25%

c)

50%

d)

75%

9.

Which of the following genotypes is homozygous dominant?

a)

aa

b)

Aa

c)

AA

10.

Which of the following genotypes is heterozygous?

a)

Bb

b)

BB

c)

bb

11.

What is the likelihood that the offspring will be yellow?

a)

0%

b)

25%

c)

50%

d)

75%

12.

What is the likelihood that the offspring will be yellow (g)?

a)

25%

b)

50%

c)

75%

d)

100%

13.

What is the likelihood that the offspring will have brown eyes (B)?

a)

0%

b)

100%

14.

What is the probability that the offspring will have blue eyes?

a)

25%

b)

50%

c)

75%

d)

100%

15.

The tendency of a substance to move from an area of higher concentration to an area of lower concentration.

a)

diffusion

b)

osmosis

c)

active transport

d)

sodium-potassium pump

16.

The movement of water through a membrane from an area of higher concentration to an area of lower concentration.

a)

diffusion

b)

osmosis

c)

active transport

d)

sodium-potassium pump

17.

The process of using energy to move materials through a membrane.

a)

diffusion

b)

osmosis

c)

active transport

d)

passive transport

18.

Organelles that release energy by using oxygen to breakdown sugars

a)

cell membrane

b)

nucleus

c)

mitochondria

d)

chloroplast

19.

An organelle in a plant cell that contains chlorophyll, a chemical that uses the energy from sunlight to make sugar.

a)

cell membrane

b)

nucleus

c)

mitochondria

d)

chloroplast

20.

The variable that is being measured

a)

independent variable

b)

dependent variable

c)

constants

d)

control group

21.

The variable that is manipulated or changed. (What I change)

a)

independent variable

b)

dependent variable

c)

constants

d)

control group

22.

What gas makes up the majority of Earth's atmosphere?

a)

Nitrogen

b)

Oxygen

c)

Argon

d)

Helium

23.
What percentage of our atmosphere is made up of other gases such as argon, water vapor, and carbon dioxide?
a)
1%
b)
21%
c)
78%
d)
90%
24.
What is the percentage of oxygen in Earth's atmosphere?
a)
1%
b)
21%
c)
78%
d)
90%
25.
What is the percentage of nitrogen in Earth's atmosphere?
a)
1%
b)
21%
c)
78%
d)
90%
26.
The graph below shows CO2 emissions and temperatures from 1909 to 1949.  What conclusion is best supported by the graph?
a)
There is no relationship between carbon dioxide concentrations and temperatures
b)
As carbon dioxide concentrations increase, temperatures increase
c)
As carbon dioxide concentrations increase, temperatures decrease
d)
As carbon dioxide concentrations decrease, temperatures increase
27.
The main human activity that releases greenhouse gases is
a)
using bottled water
b)
burning fossil fuels
c)
texting on cellphones
d)
eating meat
28.

How does the Earth keep itself warm?

a)

Sunlight keeps the Earth warm.

b)

There are heat lamps orbitting above the Earth's atmosphere.

c)

The greenhouse gases trap the warm air and send it back to the Earth's surface.

29.
1.  Certain gases in the atmosphere – water vapor, carbon dioxide, methane and nitrous oxide – help maintain the Earth’s temperatures and climate. These are called: __________ . 
a)
A.  ozone gases
b)
A.  solar gases
c)
A.  greenhouse gases 
d)
A.  stomach gases
30.

A subatomic particle that has a negative charge

a)

nobles gases

b)

protons

c)

electrons

d)

neutrons

31.
Most of the elements on the periodic table are classified as _____.
a)
Metals
b)
Nonmetals
c)
Metalloids
d)
Periods
32.
This class of elements are sometimes called "semiconductors."
a)
Metals
b)
Nonmetals
c)
Metalloids
d)
Groups
33.

Metals are found on the ______________ side of the periodic table.

a)

nonmetals

b)

left

c)

right

d)

metals

34.

This group of elements sit along a stair step line on the periodic table and have properties of both metals and nonmetals. _________________________

a)

luster

b)

metals

c)

nonmetals

d)

metalloids

35.
Which of the following is a good conductor of heat?
a)
Metal
b)
Nonmetal
c)
Metalloid
36.

a subatomic particle, contained in the nucleus of an atom, having the same mass as a proton but no electrical charge

a)

proton

b)

neutron

c)

electron

d)

matter

37.
Which is an electron?
a)
A
b)
B
c)
C
38.

Which color on the image of the periodic table corresponds with the metalloids.

a)

bright yellow

b)

gold

c)

teal

d)

light blue

39.

Which elements are colored red?

a)

nonmetals

b)

metals

c)

metalloids

40.
Silicon is a semiconductor and has properties of both metals and nonmetals. What type of element is Silicon? 
a)
Metal
b)
Nonmetal
c)
Metalloid
d)
Pretty
41.
All of these properties describe metals except...
a)
malleable
b)
conductors
c)
brittle 
d)
shiny
42.
NaHCO3 is an example of —
a)
an abbreviation
b)
a compound
c)
a mixture
d)
an element
43.

Brass is a metal that is bright red and gold. It is formed by combining, not chemically, two elements, zinc and copper. Based on the information, how would brass be classified?

a)

an element

b)

compound

c)

mixture

d)

suspension

44.
Classify the picture with the correct label.
a)
Element
b)
Compound
c)
Mixture of Elements
d)
Mixture of Compounds
45.

This picture represents which of the following?

a)

A single element

b)

Mixture of molecules

c)

mixture of atoms

d)

mixture of compounds

46.

This diagram represents a _____.

a)

Element

b)

Compound

c)

Mixture of compound and element

d)

Mixture of two elements

47.

O2 is a compound molecule.

a)

TRUE

b)

FALSE

48.

What is the picture displayed?

a)

atom

b)

element molecule

c)

compound molecule

49.
In the equation,          2Mg + O2 ---> 2MgO, which are the reactants?
a)
Mg and O
b)
MgO
c)
Mg and MgO
d)
O and MgO
50.

Determined whether the following equation is balanced or unbalanced. Ag + O2 ---> 2Ag2O

a)

Balanced

b)

Unbalanced

51.

Determine whether the following equation is balanced or unbalanced. H2 + Br2 ---> 2HBr

a)

Balanced

b)

Unbalanced

52.

In order for an equation to be balanced, there must be ...

a)

an equal amount of atoms on both sides

b)

a greater mass on the product side

c)

a greater mass on the reactant side

d)

elements with the same atomic # on both sides

53.
In this image, what are the information in red is called the_______.
a)
Product
b)
Reactant
c)
Chemical Subscript
d)
Coefficient
54.
The law of conservation of mass states that....
a)
Matter can be made
b)
Matter can be destroyed
c)
Matter can neither be made or destroyed
d)
Matter can evaporate

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