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What is the mass of the object being measured in the figure?A 47.52 g B 147.52 g C 407.52 gD 527.40 g A


The surface of liquids in a glass cylinder is always curved. This curved surface is called a meniscus. When reading a volume of a liquid, read the bottom of the meniscus. What is the most precise volume of the liquid shown in the figure?

19.4 ml


The graph shows the amount of aluminum collected during one week for recycling. Which of the following statements best describes the data shown?

A More aluminum was collected on Wednesday than Friday.B Twice as much aluminum was collected on Monday than Friday.C Less aluminum was collected on Monday than Wednesday.D The most aluminum was collected on Friday.

B


According to the data, what are the best conditions for growing mold?A cold temperature and low humidity B warm temperature and high humidity C cold temperature and high humidity D warm temperature and low humidity B


What inference is supported by the information in the graph?

A Only 10.7 percent of all landfills have a permit to burn tires.B About one-third of all scrap tires are either exported or recycled.C Most scrap tires are illegally dumped to avoid tire disposal fees.D The supply of scrap tires is greater than the reuse of scrap tires.

D


Which statement is a hypothesis that could be tested experimentally to answer this question?A A container of cider without yeast should serve as a comparison.B Set up an apparatus to collect and test the gas.C Cellular respiration is being carried out by the yeast. D The rate of gas produced must be determined.

C

Apple cider containing yeast was placed in a sterile container and kept at room temperature. When small bubbles of gas formed in the cider 2 days later, a student asked, “What is producing the gas bubbles?”


The illustration shows volume levels of a liquid in a graduated cylinder before and after a sample was removed. According to this information, what was the volume of the sample to the nearest milliliter?

9 ml


T

The table shows four mass readings of one object as measured by four different balances. Which balance produced the most-consistent measurements?


A

The dependent variable in this investigation is –A the gas releasedB constant lightC the green plant D water


C

A student observes a garden plot. A student observes a garden plot. Several plants shaded by a tree are not Several plants shaded by a tree are not as large as those of ht same species as large as those of ht same species growing in the full sun. the student asks, growing in the full sun. the student asks, “Why are the plants growing in the shade “Why are the plants growing in the shade smaller than the plants growing in the smaller than the plants growing in the sun?”sun?”

Which is the most reasonable hypothesis to explain the student’s observations?A The tree removes water from the soil. The drier soil limits the growth of those plants growing near the tree.B The tree removes minerals from the soil. The mineral-reduced soil limits the growth of those plants growing near the tree.C The tree blocks sunlight, lowering the light level in the shaded area. This limits the growth of this plants species which grows best in direct sunlight. D The tree blocks sunlight, lowering the air temperature of the shaded area. This limits the growth of this plants species which grows best at warmer temperatures.


Which of these best completes this concept map?

A an animal cell

B a prokaryotic cell

C a plant cell

D a virus

C; a plant cell


Based on the summary equation for photosynthesis shown below, which of the following is produced by the reaction?

A CO2

B H2O

C light

D C6H12O6

D C6H12O6

6CO2 + 6H2O + light → C6H12O6 + 6O2


A Nucleus B chloroplast C Golgi D mitochondrion apparatus

B

Which organelle pictured is responsible for transforming solar energy into stored chemical energy in the form of carbohydrates?


If placed in a hypertonic solution, a plant cell will -

A swell due to osmosis

B burst due to diffusion

C shrink in size due to osmosis

D remain constant in size

CWhich of the pictures shows a plant cell in a hypertonic solution? A


What is the difference between plant and animal cells?A Plant cells contain a cytoskeleton and animal cells do not.B None, they contain the same features.C Plant cells have a cell wall and chloroplasts, animal cells do not. Plant cells usually are larger and contain one large vacuole. Animal cells contain centrioles.D Animal cells contain a nucleus. Plant cells do not contain a nucleus.

C


In all plant and animal cells, the nucleus contains long molecules of DNA. Which of the following best describes the function of DNA?

A DNA provides the shape and structure of the nucleus.B DNA packages materials for transport through the nucleus.C DNA carries materials into and out of the nucleus.D DNA contains the blueprint for producing the whole organism.

D


The process by which the order of bases

in messenger RNA (mRNA) codes for the

order of amino acids in a protein is called -

A translation

B transcription

C replication

D nondisjunction

A


What would be the sequence of nitrogen bases in the DNA segment from which the above section of mRNA was transcribed?

AGCTAA


Mutations in DNA molecules can occur when -A replication of DNA is exact

B a DNA enzyme attaches to an RNA

codon

C RNA codons are replaced by DNA

nucleotides

D a change occurs in DNA nucleotide

bases D


Given the following mRNA sequence, determine the sequence of amino acids assemled during translation..

5’ CAGUCAGCGUUG 3’5’ CAGUCAGCGUUG 3’

Glutamine – Serine – Alanine - Leucine


Pea plants have seeds that are either round or wrinkled. In this cross, what will be the phenotypic ratio of the offspring?

A 50% RR and 50% Rr

B 25% RR, 50% Rr, and 25% rr

C 50% round seeds and 50%

wrinkled seeds

D 100% round seeds

R = Round Seedsr = Wrinkled Seeds

D


If a corn plant has a genotype of Ttyy, what are the possible genetic combinations that could be present in a single grain of pollen from this plant?

A Ty, ty

B TY, ty

C TY, Ty, ty

D Ty, ty, tY, TY A


If a poppy flower plant has a genotype of RrYy, what are the possible genetic combinations that could be present in a single egg cell from this plant?

A RY, Ry

B Rr, Yy

C RY, rY, Ry

D RY, Ry, rY, ry D


The following genotypes were found in a male cat and a female cat.

BbSs (male) x bbSS (female) Which one of the following choices is true of the phenotype of offspring from these parents?

A All offspring will have white fur.B All offspring will have black fur.C All offspring will have short-haired fur. D All offspring will have long-haired fur. C


If a fruit fly that is homozygous If a fruit fly that is homozygous ebony-bodied and curly-winged is ebony-bodied and curly-winged is crossed with a fruit fly that has both crossed with a fruit fly that has both white-bodied and a curly-winged, white-bodied and a curly-winged, which percentage of genotypes which percentage of genotypes would most likely be found in the would most likely be found in the first-generation offspring?first-generation offspring?

AA 100% EeNn 100% EeNn B B 100% Eenn 100% Eenn C C 50% EEnn, 50% eeNN50% EEnn, 50% eeNNDD 50% EeNN, 50% eeNN 50% EeNN, 50% eeNN

Fruit Fly Traits

Gene Trait

E Ebony body

e White body

N Normal wings

n Curly wings

B

A C C D D

19.4 mL 9 mL D A A

B T B AGCTAA C

B A C

A

D C

D C C Glutamine – Serine – Alanine –

Leucine

B

Nature Nature of of

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Nature Nature of of

Science Science IIII

Cellular Cellular ProcessProcess

eses

DNA & DNA & Protein Protein

SynthesisSynthesis

MendeliMendelian an

GeneticGeneticss

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