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Worksheets

Midterm Biology l

Total questions: 26

Worksheet time: 13mins

Name
Class
Date
1.

1. --------------- accounts for more than half of the total membrane in many eukaryotic cells

a)

Plasma membrane

b)

Endoplasmic reticulum

c)

Golgi apparatus '

d)

Nuclear envelope

2.

Flattened membranous sacs inside the chloroplast

a)

grana

b)

Chromoplasts

c)

Stroma

d)

Thylakoid

3.

Example of prokaryotic cells

a)

Protists

b)

fungi

c)

animals

d)

Bacteria

4.

Which of the following contains hydrolytic enzymes

a)

vacuole

b)

lysosome

c)

mitochondrion

d)

Golgi apparatus

5.

The nuclear lamina stabilizes cell shape

a)

T

b)

F

6.

Phagocytosis is a process by which some types of cell can engulf another cell

a)

T

b)

F

7.

All of the following serve an important role in determining or maintaining the structure of plant cells. Which of the following are distinct from the others in their composition?

a)

microtubules

b)

microfilaments

c)

plant cell walls

d)

intermediate filaments

8.

The kind of vacuoles that is found in many mature plant cells, hold organic compounds and water

a)

Central vacuoles

b)

food vacuoles

c)

Cytosol vacuoles

d)

nuclear vacuoles

9.

Are not parts of the endomembrane system

a)

Smooth ER

b)

Golgi Apparatus

c)

Rough ER

d)

Mitochondria

10.

Hollow rods that support cells and help in guiding the movement of organelles

a)

Microtubules

b)

Microfilaments

c)

actin filaments

d)

Intermediate filaments

11.

Ions can travel directly from the cytoplasm of one animal cell to the cytoplasm of an adjacent cell through

a)

plasmodesmata

b)

intermediate filaments

c)

tight junctions

d)

gap junctions

12.

Sperm cells move by means of _____.

a)

cilia

b)

flagella

c)

mitochondria

d)

microtubules

13.

The ______ helps to maintain the cell's shape, anchors the organelles, and allows the cell and its organelles to move.

a)

nucleus

b)

rough endoplasmic reticulum

c)

cytoskeleton

d)

nucleolus

14.

Different atomic forms of an element that contain the same number of protons but a different number of neutron are called

a)

Neutronics atoms

b)

Isotopes

c)

Neutronics atoms

d)

Isozymes

15.

Which of the following bond or interaction would require more energy and would be difficult to disrupt

a)

covalent bond

b)

Hydrogen bond

c)

Van der Waals interaction

d)

Ionic bond

16.

What does the nucleus of an atom contain

a)

protons and neutrons

b)

electrons

c)

protons

d)

protons and electrons

17.

Which type of organic macromolecule is used primarily for energy and structure?

a)

NaCl

b)

nucleic acids

c)

carbohydrates

d)

proteins

18.

When nucleotide monomers join together, the ______ polymer is formed.

a)

carbohydrate

b)

protein

c)

nucleic acid

d)

cholesterol

19.

If a protein is exposed to physical/chemical agents, it may lose its native conformation. This change is called….

a)

Maturation

b)

Denaturation

c)

Replication

d)

Transcription

20.

Molecular that assist the folding of other proteins are called

a)

Hemoglobin

b)

Chaperonin

c)

collagen

d)

Silk protein

21.

What is the number of neutrons of an atom with an atomic mass of 32 and 15 protons

a)

15

b)

3/

c)

17

d)

31

22.

The following types of bonds/interactions can be found in the tertiary structure of proteins

a)

S-S bridges

b)

Van der Waals interaction

c)

Hydrogen bonds

d)

All above

23.

Which type of lipid has four fused carbon rings?

a)

cholesterol

b)

triglyceride

c)

maltose

d)

DNA

24.

Which of the following is true of cellulose?

a)

It is a polymer composed of sucrose monomers.

b)

It is a storage polysaccharide for energy in plant cells

c)

It is a storage polysaccharide for energy in animal cells

d)

It is a major structural component of plant cell walls

25.

The α helix and the β pleated sheet are both common polypeptide forms found in which level of protein structure?

a)

primary

b)

secondary

c)

tertiary

d)

all of protein structure

26.

The bonding of two amino acid molecules to form a larger molecule requires

a)

the release of a carbon dioxide molecule

b)

the addition of a nitrogen atom.

c)

the addition of a water molecule

d)

the release of a water molecule