BIO Cumulative Exam

Chromatin consists of A. DNA and protein B. RNA and protein C. protein only D. DNA only

A

Cytokinesis(division of cytoplasm) typically begins during which stage of mitosis? A. telophase B. prophase C. metaphase D. anaphase

A

One difference between mitosis and meiosis is A. mitosis produces cells genetically identical to the parent cell, but meiosis does not B. mitosis produces more daughter cells for each division than meiosis C. mitosis produces haploid cells, but meiosis produces diploid cells D. mitosis requires only one parent cell, but meiosis requires two parent cells

A

Sexual reproduction in humans A. allows a haploid sperm cell to fertilize a haploid egg cell B. allows a haploid sperm cell to fertilize a diploid egg cell C. produces an individual with 23 chromosomes D. combines two diploid gametes, producing a zygote

A

Transcription is the A. manufacture of a strand of RNA complementary to a strand of DNA B. manufacture of two new DNA double helices that are identical to an old DNA double helix C. modification of a strand of RNA prior to the manufacture of a protein D. manufacture of a protein based on information carried by RNA

A

What kind of site describes the region of an enzyme to which a substrate binds? A. active B. substrate C.enzymatic D. inactive

A

What name is given to the following reaction? sucrose + water → glucose + fructose A. hydrolysis B. glucogenesis C. denaturation D. dehydration reaction

A

When two solutions that differ in solute concentration are placed on either side of a selectively permeable membrane, and osmosis is allowed to take place, the water will: A. exhibit a net movement to the side with lower water concentration B. exhibit a net movement to the side with higher water concentration C. exhibit a net movement to the side with lower solute concentration D. exhibit an equal movement in both directions across the membrane

A

Which of these events occurs during anaphase? A. sister chromatids become separate chromosomes B. chromosomes line up in the middle of the cell C. the nuclear envelope reappears D. the nuclear envelope breaks up

A

What is the CORRECT sequence of the stages of mitosis? A. prophase, metaphase, anaphase, telophase B. telophase, prohase, anaphase, metaphase C. anaphase,interphase, prohase, metaphase,telophase D. interphase,prophase,metaphase,anaphase,telophase

A.

Energy is best defined as A. the capacity to cause movement B. the capacity to cause change C. a measure of calories D. a measure of disorder

B

What name is given to the following reaction? galactose +glucose→lactose+ water A. glycolysis B. dehydration reaction C. hydrogenation D. hydrolysis

B

What stores the information necessary to produce proteins? A. Lysosomes B. genes C. ribosomes D. carbohydrates

B

What would you examine to determine whether a trait is sex-linked? A. karyotype B. pedigree C. DNA sequence D. blood test

B

Which of these could lead to the mistake evident in the karyotype? A. failure of cytokinesis after meiosis I in gamete formation B. a nondisjunction in meiosis II in gamete formation C. crossing over in meiosis I in gamete formation D. fertilization by two sperm in zygote formation

B

After Meiosis I is completed, what is the number of chromosomes found in human cells? A. 46 autosomes B. 43 autosomes and 2 sex chromosomes C. 22 autosomes and a sex chromosomes D. 44 autosomes and 2 sex chromosomes

C

Animals store carbohydrates in their muscles as A. cellulose B. starch C. glycogen D. maltose

C

By definition, what type of fatty acids has double bonds? A. steriod B. triglyceride C. unsaturated D. saturated

C

Ordinary cell division produces two daughter cells that are genetically identical. This type of cell division is important for all of the following functions EXCEPT A. growth of a multicellular organism B. cell replacement C. production of sperm and eggs D. asexual reproduction

C

The mitotic cell cycle results in the production of A. four cells, each with the same amount of genetic material and the same genetic information B. two cells, each with same amount of genetic material but different genetic information C. two cells, each with the same amount of genetic material and the same genetic information D. four cells, each with the same amount of genetic material but with different genetic information

C

What chromosomes belong to a normal human male? A. 22 autosomes and two Y chromosomes B. 44 autosomes and two Y chromosomes C. 44 autosomes, one X chromosomes, and one Y chromosomes D. 46 autosomes, one X chromomes, and one Y chromosomes

C

When a person has lactic acid build up in their muscles, this is a sign that A. aerobic respiration capacity has not been reached B. respiration is operating effectively C. insufficient oxygen is reaching the muscles D. the muscles will be able to operate continuously for a long time

C

Which of the following occurs during interphase of the cell cycle? A.Chromatin becomes tightly coiled B. chromosome duplication C. sister chromatids separate D. the miotic spindle forms

Chromosome duplication

A duplicated chromosome is made up of two A. centromeres B. centrosomes C. genomes D. sister chromatids

D

An animal has a diploid chromosome number of 12. An egg cell of that animal has 5 chromosomes. The most probable explanation is A. normal mitosis B. normal meiosis C. Nondisjunction in mitosis D. Nondisjunction in meiosis

D

Crossing over during prophase I results in chromosomes acquiring new genes from each other. This is why brothers and sisters from the same parents can have different genetic characteristics. This process is called A. nondisjunction B. reciprocal translocation C. duplication D. genetic recombination

D

During Metaphase A. the nuclear envelope breaks up B. sister chromatids separate C. centromeres divide D. chromosomes line up in the middle of the cell

D

Lactic acid fermentation in human cells A. produces more ATP than is possible through complete aerobic respiration B. produces ATP using the electron transport chain C. regenerates NADH D. produces ATP without O2

D

Which of the following occurs during prophase A. chromosomes line up on the midline of the cell B. the nuclear envelope forms C. sister chromatids separate D.the mitotic spindle begins to form

D

Which of the following organelles connect(s) to the nuclear envelope? A. the Golgi apparatus B. lysosomes C. mitochondria D. the endoplasmic reticulum

D