exercise 7 anatomy and physiology

a karyotype is used to count centrioles and spindle fibers

false

What is the main purpose of mitosis?

for cellular division to enable growth and repair of cells

What is the main reason for interphase?

for the metabolic processes that occur in the nucleus and cytoplasm

In animal cells, the indentation were the cells are pinching apart during telophase is called the

nuclear envelope

telophase

nuclear envelopes begin to reassemble around two daughter nuclei, chromosomes decondense, spindle fiber disappears, contractile ring tightens to form the cleavage furrow as the cytoplasm divides into two cells

Which is the correct sequence of the mitotic stage?

prophase, metaphase, anaphase, telophase

daughter cells are formed from cell cycles

true

anaphase

Spindle fibers pull sister chromatids to opposite poles of cell, each pole has an identical set of genes

sister chromatids separate to opposite poles during

anaphase

A cell in stage G-zero

ceases cell division

metaphase

chromosomes align along metaphase plate of cell, some spindle fibers attach, to kinetochores, fibers of aster extend from centrosome to plasma membrane

which of the following occurs in prophase?

chromosomes condense

what happens prophase?

chromosomes condense and become visible, nuclear envelope and nucleolus disperse, single apparatus forms, centrioles migrate to opposite poles of cells

Which of the following is not a part of interphase?

cytokinesis

the cell cycle

(G1, S, G2)- interphase, (mitosis, cytokinesis) - mitotic phase

what happens in the G1 phase?

(first gap phase) cell will grow and synthesize materials needed for the S phase

What happens in the G2 phase

(second gap phase) cell completes growth and production of enzymes

what happens in the S phase?

(synthesis phase) replicates its DNA and centrioles

a human diploid cell has how many chromosomes

46

What is meiosis?

A special type of cell division that occurs in the reproductive system to produce haploid gametes with 23 chromosomes

cytokinesis

divides parent cell into two daughter cells

Which of the following events occur in telophase?

sister chromatids separate

What is a karyotype?

the arrangement go homologous chromosome pairs together in a chart it can aide the diagnosis of genetic conditions