Review. ______ and ______ cells are sex cells

Chapter 4

Review

______ and ______ cells are sex cells.

egg, sperm

____ produces two identical cells.

Mitosis

A(n) _____ is the code for a protein.

gene

A(n) _____ sperm is formed during meiosis.

haploid

Budding is a type of _____.

asexual reproduction

A(n) _____ is a structure in the nucleus that contains hereditary material.

chromosome

_____ produces four sex cells.

Meiosis

An error made during the copying of DNA is called a(n) _____.

mutation

As different as a lizard, a great white shark, and an eggplant are, they are all made of _____.

cells

The series of events that take place from one cell division to the next is called the _____.

cell cycle

After interphase, _____

begins. a. cell death b. cell division c. cell consumption d. cell erosion

B

Cells in your body that no longer divide are always in _____.

interphase

The process in which the nucleus divides to form two identical nuclei is known as _____.

mitosis

In asexual reproduction, the new organism will have hereditary material that is ____ the parent organism.

identical to

All of the following are true of

animal and plant cells during mitosis EXCEPT _____.

a. only animals have spindle fibers only plants have rigid cell walls only plants form cell plates only animals have centrioles

A

All of the following are composed

of body cells EXCEPT ____. a. bone b. kidney c. liver d. sperm

D

Each human skin cell has ____ pairs of chromosomes.

23

Human sex cells have ____ individual chromosomes.

23

In sexual reproduction, a new

organism is produced when ___. a. cell divide by mitosis b. sex cells combine c. an organism divides into two equal

parts d. a new organism grows from the

body of its parent

B

In ____, a new organism grows from the body of the parent organism.

budding

The number of chromosomes in a sex cell of an organism is its ___ chromosome number.

haploid

At the end of meiosis, ___ cells have been produced from one cell.

4

Proteins are made of units called ___, which are linked together in a specific order.

amino acids

The code for making proteins is cared to the ribosomes by ___.

mRNA

In DNA, adenine always pairs with ___.

thymine

For most cells, after the nucleus has divided, ___ separates and two new cells are formed.

cytoplasm

During prophase, the pairs of ____ are fully visible when viewed under a microscope.

chromatids

Organisms with eukaryotic cells asexually reproduce by ____.

cell division

The cell that forms as a result of fertilization is known as a _____.

zygote

Because sex cells do not have pairs of chromosomes, they are said to be ____.

haploid

Before mitosis begins, each ____ is duplicated.

chromosome

Regeneration is the process that uses cell division to regrow body parts.

True/False

True

During asexual reproduction two sex cells, sometimes called an egg and a sperm, come together.

False

sexual reproduction

Sex cells have half the number of chromosomes as body cells.

True

Haploid sex cells are produced by a process called meiosis.

True

Organisms with three, four, or more sets of chromosomes are known as haploid organisms.

False

polypoid

Every cell that has ever been formed in your body, or in any other organism’s body, contains DNA.

True

DNA stands for deoxyribonucleic acid.

True

RNA is made in the nucleus on a DNA pattern.

True

Sex cells have half the number of chromosomes that body cells have.

True

Haploid sex cells are produced by meiosis.

True

Organisms with three sets of chromosomes are known as haploid organisms.

False

triploid

Lists the phased of Mitosis in order.

Multiple Answers

prophase, metaphase, anaphase, telephase

List the types of RNA. (you may not use the abbreviations)

List the nitrogen bases.

adeninethyminecytosineguanine