IB Biology Multiple Choice Final

Humans can respire aerobically and anaerobically. Which are products of both cell respiration and anaerobic cell respiration in humans? A. Pyruvate and ATP B. Pyruvate and Lactate C. ATP and Carbon Dioxide D. Lactate and Carbon Dioxide

Pyruvate and ATP (A)

what happens during the G2 phase of interphase

Synthesis of proteins

A red blood cell is *um in diameter. If drawn 100 times larger it would be how many mm?

0.8mm

In the mitochondrial electron transport chain, what is the last electron acceptor? A. CO2 B. H20 C. 02 D. NAD

02 (C)

What is the net production of ATP, per molecule of glucose during the fermentation of glucose to lactate? A. 36 molecules B. 4 molecules C. 2 molecules D. None

2 Molecules (C)

How many molecules of water are required to completely hydrolyse a polypeptide made of 23 amino acids? A. 11 B. 22 C. 23 D. 44

22 (B)

How many autosomes are there in human sperm? A. 1 B. 22 C. 23 D. 46

23 (C)

If a heterozygous fruit fly is mated with a black bodied fruit fly, what proportion of the offspring would be black? A. 0% B. 25% C. 50% D. 100%

50% (C)

If an organism that is homogynous recessive for a trait is crossed with a heterozygote, what is the chance of getting a homozygous recessive phenotype in the first generation? A. 0% B. 25% C. 50% D. 100%

50% (C)

what do prokaryotic cells have that eukaryotic cells do not?

70s Ribosomes

How many combinations are possible for these chromosomes in the haploid cells formed by meiosis? A. 2 B. 6 C. 8 D. 9

8 (C)

What is the differnce between a cell in the G1 phase and a cell in the G2 phase of the cell cycle? A. A cell in the G2 phase would be smaller than the cell in the G1 phase B. A cell in the G2 phase would have more mitochondria than a cell in the G1 phase C. A cell in the G1 phase would have more DNA in its chromosomes than a cell in the G2 phase D. DNA replication occurs in the G1 phase but not in the G2 phase

A cell in the G2 phase would have more mitochondria than a cell in the G1 phase (B)

What is polygenic inheritance? A. A character that is controlled by two or more genes B. A character that is controlled by more than two copies of a gene C. Inheriting more than two alleles of a gene D. Inheriting a linked group of genes

A character that is controlled by two or more genes (A)

Red green colorblindness is a sex linked condition. which of the following always shows normal vision? A. A homozygous male B. A homozygous female C. A heterozygous male D. A heterozygous female

A heterozygous female (D)

What is a codon? A. A sequence of nucleotides on rRNA that corresponds too an amino acid B. A sequence of nucleotides on mRNA that corresponds too an amino acid C. A sequence of nucleotides on tRNA that corresponds too an amino acid D. A sequence of nucleotides on DNA that corresponds too an amino acid

A sequence of nucleotides on mRNA that corresponds to an amino acid (B)

What is denaturation? A. A structural change of protein that results in the loss of its biological properties B. A change in the genetic code of an organism C. A change in the amino acid sequence D. The process by which amino acids are broken down and ammonia is released

A structural change of a protein which results in the loss of its biological properties (A)

Which of the following colors of light is the most absorbed by chlorophyll? A. Blue B. Green C. Yellow D. Orange

Blue (A)

Which of the following genotypes are possible in men? A. c only B. C or c only C. CC or cc only D. CC, Cc, or cc only

C or c only (B)

Oxygen is produced during photosynthesis.What is the source of oxygen inside the plant? A. Air spaces in the leaf B. Carbon dioxide C. Glucose D. Water

Carbon Dioxide (B)

What feature do plant cells have but not animal cells? A. Plasma membranes B. Mitochondria C. Cell walls D. 80S ribosomes

Cell Walls (C)

Which enzyme removes the RNA primer during replication? A. RNA primase B. DNA polymerase 1 C. DNA ligase D. Helicase

DNA Polymerase 1 (B)

What does a nucleosome consist of? A. DNA and Histones B. DNA and Chromatin C. Chromatin and Nucleotides D. Mature RNA and Histones

DNA and Histones (A)

When do chiamata form in meiosis? A. During prophase I B. During metaphase I C. During anaphase I D. During prophase II

During prophase I (A)

Cells in the adrenal gland produce the hormone epinephrine and store int in vesicles. To release epinephrine these vesicles are carried to the plasma membrane and fuse with it. What process is occurring? A. Expulsion B. Exchange C. Excretion D. Exocytosis

Exocytosis (D)

If mRNA has a codon CAU, what is the corresponding anticodon on the tRNA molecule? A. CAT B. GUA C. CAU D. GTA

GUA (B)

Which of the following conclusions did Mendel make from his experiments? A. Dominant genes are more frequent than recessive genes B. Genes are composed of DNA C. Genes for two different characteristics are inherited separately D. Segregation occurs through meiosis

Genes for two different characteristics are inherited separately (C)

What is the first identifiable product of carbon dioxide fixation in photosynthesis? A. Ribose biphosphate (RuBP) B. Glycerate 3-phosphate (GP) C. Triose phosphate (TP) D. Acetyl CoA

Glycerate 3-phosphate (B)

Where are complex carbohydrates made in the chloroplast? A. In the inter-membrane space B. In the stoma C. On the inner membrane D. In the thyroid space

In the stoma (B)

What is the function of the tRNA activating enzyme? A. It links tRNA to ribosomes B. It links tRNA to mRNA C. It links tRNA to a specific amino acid D. It links an amino acid on one tRNA to an amino acid on another tRNA

It links tRNA to a specific amino acid (C)

Whats the difference between galactose and lactose? A. Lactose is a disaccharide and galactose is a monosaccharide B. Lactose is the product of anaerobic respiration in humans and galactose is the product of aerobic respiration C. Lactose is an enzyme and galactose is a hormone D. Galactose is a sugar found in milk but lactose is not found in milk

Lactose is a disaccharide and galactose is a monosaccharide (A)

Which process results in a recombination?

Meiosis: yes Crossing over: yes Independent Assortment: yes Mutation: no

What is the difference between cohesion and adhesion? A. Only adhesion is involved in transpiration B. Only cohesion is involved in the movement of water in the soil C. Only cohesion involves the interaction of water with soil mineral particles D. Only adhesion involves the interaction of water with xylem

Only adhesion involves the interaction of water with the xylem (D)

Which molecule is found both in DNA and RNA? A. Ribose B. Uracil C. Phosphate D. Amino Acid

Phosphate (C)

What happens during translation? A. Copying of DNA to produce DNA B. Copying of DNA to produce mRNA C. Copying of DNA to produce tRNA D. Polypeptide synthesis

Polypeptide Synthesis (D)

Which two colors of light does chlorophyll absorb the most? A. Red an yellow B. Green and blue C. Red and green D. Red and blue

Red and Blue (D)

Which process is used in polymerase chain reaction? A. Transcription B. Translation C. Replication D. Mutation

Replication (C)

Which of the following structures are found in all cells? A. Mitochondria B. Cell Walls C. Chloroplasts D. Ribosomes

Ribosomes (D)

Which of the following is a feature of exocytosis but not endocytosis? A. Shape change of a membrane B. Vesicle formation C. Use of ATP D. Secretion

Secretion (D)

What is a polysome? A. A ribosome that is synthesizing proteins from several mRNA molecules at the same time B. A ribosome that is synthesizing different proteins for secretion C. Several ribosomes using a mRNA molecule to synthesize protein at the same time D. Several ribosomes that are synthesizing different proteins for use in the cytoplasm

Several ribosomes using a mRNA molecule to synthesize protein at the same time (C)

What are Okazaki fragments? A. Short lengths of RNA primase attached to the DNA during replication B. Short sections of DNA formed during DNA replication C. Nucleotides added by DNA polymerase I in the same direction as the replication fork D. Sections of RNA removed by DNA polymerase III and replaced with DNA

Short sections of DNA formed during DNA Replication (B)

Where does the RNA polymerase bind during the process of transcription? A. The polysome B. The operator C. The promoter D. The initiator

The Promoter (C)

What causes stomata to close? A. Increase in the turgor of the guard cells B. A high level of CO2 in the leaf tissues C. The presence of abscisic acid D. Movement of K^+ into the guard cells

The presence of abscisic acid (C)

What is the role of NADH+H in aerobic cell respiration? A. To transfer hydrogen to the electron transport chain B. To reduce intermediates in the Krebs Cycle C. To accept electrons from the electron transport chain' D. To combine with oxygen to produce wear

To reduce intermediates in the Krebs Cycle (B)

The DNA of a particular cell is damaged, so that cell continues to divide uncontrollably. What is the possible result? A. Coronary heart disease B. AIDS C. Tumor formation D. Down syndrome

Tumor formation (C)

The antisense strand on the DNA Molecule coding for three codons of a gene is TATCGCCACG. What are the anti-codons of the three tRNA molecules that correspond to this sequence? A. UAU, CGC, and ACG B. ATA, GCG, and TGC C. AUA, GCG, and UGC D. TAT, CGC, and ACG

UAU, CGC, and ACG (A)

Which statement about water is correct? A. The atoms within a molecule if water are held together by hydrogen bonds B. Water has a low heat capacity allowing enzymatic reactions to happen at a wide range of temperatures C. Water molecules are polar, therefore fatty acids do not dissolve D. Ice has a higher density than liquid water, therefore some organisms can live under the ice

Water molecules are poler therefore fatty acids do not dissolve (C)

What reaction involving gylcerate-3 is part of the light independent reactions of photosynthesis? A. Glycerate 3-phosphate is carboxylated using carbon dioxide B. Two glycerate 3-phosphates are linked together to form on hexose phosphate C. Glycerate 3-phospate is reduced to triose phosphate D. Five glycertate 3-phosphates are converted to three ribulose 5-phospahtes

glycerate 3-phosphate is reduced to trios phosphate (C)

Which phase of cell division is photographed in order to make a karyotype? A. Anaphase of mitosis B. Anaphase I of mitosis C. Metaphase of mitosis D. Metaphase I of mitosis

metaphase of mitosis (C)

What are the structures and stage of mitosis?

metaphase, chromatid and nuclear membrane

Which enzymes are needed to incorporate genes into plasmids? A. DNA polymerase and ligase B. DNA polymerase and restriction enzymes C. Restriction enzymes and ligase D. Helicase and restriction enzymes

restriction enzymes and ligase (C)

If a Sequoia Sempervirens tree is 100m tall and a drawing of it is 100 mm tall, what is the magnification of the drawing? A. x0.001 B. x0.1 C. x1.0 D. x1000

x0.001 (A)

If a mitochondrion has a length of 5um and a students drawing is 10mm what is the magnification of the drawing?

x2000

During reproduction in flowering plants an embryo sac is produced, containing one haploid nucleus. This haploid nucleus divides by mitosis three times. What is produced? A. One diploid nucleus B. Four diploid nuclei C. Four haploid nuclei D. Eight haploid nuclei

Eight haploid nuclei (D)

What could be achieved by DNA profiling using gel electrophoresis? A. The chromosome number of an organism could be counted B. It could be shown that human tissue found at the site of a crime did not come from a person suspected of having committed a crime C. A karyotype could be provided D. Extinct species of living organisms could be brought back to life

It could be shown that human tissue at the crime scene did not come from a person suspected of having committed the crime (B)