Mastering bio chap 9

Centromere is divide and sister chromatids become full fledge chromosomes during

anaphase

Since 1991 deaths from breast and colorectal cancer in the United States are down 35%. What is the main reason for this?

better screening

Spindle fibers attach to kinetochores during

prometaphase

Chromosomes become visible during

prophase

Can you match these prefixes, suffixes, and word roots with their definitions?

single: haplo both, double: diplo- same: homo- (or homeo-) without, lack of, not: a- (or an-) small: micro- to produce: -gen- body: -some (or soma-) chromosomes: ploid color: chrom- self: auto- many: multi- end: telo- before: pro- two: bi- one: uni- between: inter- segment, body section: -mere thread: mito- cell: -cyte (or cyto-) moving: kin- (or kinet-)

DNA replication produces two identical DNA molecules called

sister chromatids

Cytokinesis often but not always accompanies

telophase

When did the United States declared war on cancer by passing the national Cancer act

1971

Which of the following is closest to the current average annual death rate from cancer in the United States

580 thousand

Based on the information in the video which of the following correctly answer to these three questions • what was the leading cause of death in the United States in the early 1970s? • What is the leading cause of death in the United States today? • What is predicted to be the leading cause of death in the United States 10 years from now?

Cancer, cardiovascular disease, cancer

Nucleoli are present during

Interphase

Why is the personal care plan described in the video in which treatments or tailored for each individual, much more promising than previous treatment plans?

The genetic mutations that cause cancer vary from patient to patient

Which of these is not a carcinogen

cigarette smoke, fat, UV light, testosterone, all of the above are carcinogens -all of these substances can cause cancer

what is a carcinogen that promotes colon cancer.

fat