ap bio midterm

The activation energy of the above reaction is indicated by

2

If Bill marries a woman who is neither colorblind or a carrier what is the chance that their son will be colorblind

25%

If DNA strand is 5' - GTACTACCTG-3' what is the complimentary DNA strand

3' - CATGATGGAC-5'

If I segment of DNA contains the sequence five prime GATTTAATG-3' the resulting RNA must be

3'- GATTTAATU-3'

These protein molecules are involved in cell transport

A

These run anti-parallel to one another

A and B

According to Mendel true breeding refers to which of the following

A homozygous organism

During osmosis, water will move from a hypotonic solution to

A hypertonic solution

A reaction is regulated by regulating its enzyme in competitive inhibition

A substance that mimics the substrate inhibits an enzyme by occupying the active site

Glycolysis occurs in the

A, b and c (cytoplasm grana and mitochondria)

During photosynthesis energized photosystems in embedded in the thylakoid membranes of chloroplasts produce which of the following

ATP and NADPH

The Chemiosmotic gradient in aerobic respiration drives the processes of

ATP synthesis

Chemiosmosis in photosynthesis occurs

Across the thylakoid membrane

The movement of solutes against a gradient that requires an expenditure of energy

Active transport

The operation of molecule B can be affected by

All of the above

In prokaryotic cells the transcription initiation complex binds to

An MRNA molecule

During translation the initiation complex is composed of

An mRNA a tRNA molecule, and two ribosomal subunits

Reaction in which synthetic chemical activity produces a more highly ordered chemical organization is called

Anabolism

A phosphate group is represented by letter

C

According to the first law of thermodynamics, energy can be transferred from ice cubes to boiling liquid in a container. However, the total energy of the closed system is always

Constant

Proteins made by free ribosomes are most likely function in which of the following location

Cytosol

Deoxyribose is represented by letter

D

Which of the following refers to the hydrophobic portion of the lipid molecules

D

OKaZaki fragments are formed on

DNA lagging strand

Which of the following best represents the expression of genes

DNA-RNA—Protein

Hydrogen bonds that join bases of the helix together are represented by letter

E

Which statement about the graph of enzyme activity is correct?

Enzyme D works best at the most alkaline pH

The interaction between genes that causes the suppression of one of the genes is called

Epistasis

The reaction labeled b is

Exergonic and catalyzed

Discovered that molecules from the dead a strain of the bacterium streptococcus pneumoniae had Genetically transformed some of the living R strain bacteria into S strain bacteria

FredRick Griffith

lysosomes operate within the cell by

Fusing with vacuoles to catalyze food and dead organelles

If a polypeptide chain has the amino acid sequence LEU - ARG - Lyswhat with the corresponding anti-codons found on the tRNA

GGUGCUUUU

In mammals carbohydrates are usually stored as

Glycogen

The Organelle which consists of flattened membrane sacs and can be considered the final packaging location for proteins and lipids is the

Golgi apparatus

How would phenylalanine differ from the molecule depicted above?

Group 4 differs

Which of the following sequences express is the correct order of the enzyme function in DNA replication

Helicase, primase, DNA polymerase, ligase

In humans, brown eyes are dominant over blue eyes. If a man who is homozygous for brown eyes has children with a woman who is heterozygous for blue eyes the phenotype of the children will be

Homozygous dominant and heterozygous

High energy phosphate bonds are only present in

II Only

If the following Cell has competed meiosis it must be

In the gonads

Identify the structure indicated by the letter C

MRNA

Which of the following does not participate in transcription or translation

MRNA

A cell lacking it's microtubules has problems

Maintaining its shape

Which of the following classifications best describes individual A

Male with down syndrome

In sexually reproducing organisms, this two stage method of cell division results in gametes with half the chromosome number as the original cell

Meiosis

Cyanobacteria may contain all of these except

Mitochondria

What is arrow C pointing to?

Mitochondria

What substance varies within a nucleotide of DNA?

Nitrogenous base

The large and small subunit of a eukaryote ribosomes are made in the

Nucleolus

During the creation of a secretory protein, a vacuole will travel which of the following pathways?

Nucleus-RER-Golgi apparatus-plasma membrane

The five prime end of a DNA Nucleotide can we identified as the location of

Phosphate group

During Photosynthesis X Marks the Spot for which of the following processes

Photosystem two electron transport chain and photosystem one

Occurs when dissolved substances enter the cell and the plasma membrane folds inward to form a channel allowing the liquid to enter

Pinocytosis

Identify the structure indicated by letter B

Polypeptide chain

In humans the rate of glycolysis is regulated by

Positive feedback by excess phosphofructokinase

What values are used to calculate water potential

Pressure potential and solute potential

A sample of double stranded DNA has equal numbers of

Purines and pyrimidines

A single strand containing phosphate,ribose and the bases adenine guanine uracil and cytosine is called

RNA

The structure of ATP most closely resembles

RNA

The molecule depicted above is:

RNA adenosine nucleotide

Which of the following statements about translations is incorrect

RNAS carry the amino acids to the mRNA strand

The diagram depicts the ability of molecule B to be

Reused

Prokaryotes and eukaryotes tend to have which of the following features in common?

Ribosomes

After mapping a chromosome, a scientist Find that jeans QNRR 20 units apart and jeans are an ass are 10 units apart and jeans QNSR 30 units apart the sequence on the chromosome would be

SRQ

What is the main difference between saturated and unsaturated fats?

Saturated fats do not have double bonds.

The reaction depicted above

Shows peptide bond formation

Alcohol is detoxified and lipid synthesis occurs in

Smooth er

What occurs In cam plants during the day and night

Stoma opening is not generally a function of time of day

All of the following are true of an allosteric enzymes EXCEPT

The allosteric site serves as the active site in the presence of competitive inhibitor's

A cellphone bag with 2M of sucrose that is only permeable to water is placed in a beaker with distilled water. After 1 minute one would observe

The bag expanding

Which of the following statements best describes metastasis

The spread of cancer cells from their original site

DNA replication is a semi conservative process because in the double helix

There are two strands one from the template and new complementary strand

Anti-codons are part of which of the following molecules

Trna

The DNA monomer that would be transcribed to produce the above molecule in an mRNA chain could have the nitrogenous base

Uracil

1. Which of the following ean be atributed to the fact that the bottom of the lake doesn't freeze solid?

Water expands as it solidifies making ice water less dense than liquid water

Enzymes Alter reaction rate by affecting

activation energy

The cell depicted by areas in which phase of mitosis

anaphase

A eukaryotic cell lacking helicase during DNA replication would

be incapable of unwinding the DNA helix

The formation of a peptide bond requires the reaction between

carboxyl and amino groups

during non growth periods of the cell cycle, DNA exists as

chromatin

The triplet of nucleotides of mRNA that corresponds to another unit of nucleotides in the tRNA is the

codon

During prophase I crossing over is responsible for

contributing to genetic diversity

Isomers of glucose have

different structural formulas but the same molecular formula

Before molecule of MRNA can leave the nucleus it must

excise the introns and splice the exons together

Describes the process of vesicles fusing with the plasma membrane and releasing their contents to the outside of the cell

exocytosis

Triglycerides are composed of

glycerol and 3 fatty acids

3. The attraction between the hydrogen of one H:O molecule and an oxygen of another H:0 molecule is an example of

hydrogen bond

All amphipathic molecules have which of the following?

hydrophobic and hydrophilic region

In water, lipids naturally form droplets or a film because of

hydrophobic interactions

2. Each of the following are properties of water EXCEPT

it has a low heat of vaporization

If a plant cell is immersed in a solution having higher water potential than the cell, Which of the following will occur

osmotic uptake of the water will cause the cell to swell

All of the following are carbohydrates except

polypeptide

Net movement of substances from an area of higher concentration to an area of lower concentration

simple diffusion

Oxygen given off by plants is derived from

water

Without oxygen the electron transport chain

will not function, and the cell will undergo fermentation