Honors Biology Exam Pt. 2

1.

1 point

The reactivity of an atom is determined by

The electrons in the highest energy level

The protons in the lowest energy level

The neutrons in the highest energy level

The electrons in the lowest energy level

2.

1 point

Which is not one of the four abundant elements?

Carbon

Oxygen

Hydrogen

Sodium

3.

1 point

the plasma membrane has the phospholipids'

hydrophilic tails on the interior and hydrophobic heads pointing outwards

hydrophilic heads on the interior and hydrophobic tails pointing outwards

hydrophobic tails on the interior and hydrophilic heads pointing outwards

hydrophobic heads on the interior and hydrophilic tails pointing outwards

4.

1 point

___________ are cellular junctions found between neighboring plant cells where they are essentially open channels through which material may easily pass.

Adhering Junctions

Gap Junctions

Tight Junctions

Plasma Junctions

5.

1 point

Unlike the plasma membrane, the cell wall is ____________.

composed of a lipid bilayer

usually made of tough fibers

a flexible barrier

found in all organisms

6.

1 point

Which of the following is NOT found in the nucleus?

Chromatin

DNA

Cytoplasm

nucleolus

7.

1 point

In a plant cell, DNA can be found in ___________.

mitochondria

the nucleus

chloroplasts

all of the above

mitochondria and the nucleus

8.

1 point

Nucleotide consists of a base a sugar and a

Polypeptide Group

Glycerol group

Phoshphate group

Sulfhydryl group

9.

1 point

What type of bond results from sharing of electrons

All of the Above

Ionic

Hydrogen

Covalent

10.

1 point

Surface-to-volume ratio is the most important factor for why cells are microscopically small. Which of these surface-to-volume ratios for 4 hypothetical cells would enable the cell to exchange materials most effectively via its membrane in a given amount of time?

10:1

1:1

1:10

5:1

11.

1 point

Electronegativity refers to the _____

Ratio of positive to negative atoms

Negative pole of a battery

Power of atoms to attract electrons

Flow of electricity in a circuit

12.

1 point

The plasma membrane of a cell consists of two layers of ___________.

Nucleic Acids

Lysosomes

Carbohydrates

Amino Acids

Phospholipids

13.

1 point

What type of bond results from the transfer of an electron from one atom to another?

Hydrogen

Non-Polar

Covalent

Ionic

14.

1 point

Nucleotide chains of DNA are held by

Ionic Bonds

Hydrogen Bonds

Interactions with RNA

Non-polar interactions

15.

1 point

Prokaryotic DNA

is contained within the prokaryote's cytoplasm

is contained within the prokaryote's nucleus

is embedded in the capsule

is embedded in the cell wall

16.

1 point

Isotope has same number of _____ but different number of _____

Electrons, protons

Neutrons, protons

Neutrons, electrons

Protons, neutrons

17.

1 point

All cells have the following:

plasma membrane, cytoplasm, and nucleus.

plasma membrane, cytoplasm, and ribosomes.

plasma membrane, nucleus, and DNA.

DNA, ribosomes, and cell wall.