Answers Lincoln Biology A-CRCumulative Exam

Cumulative Exam Answers

0 verified answers

The graph below shows the light absorbance of two kinds of chlorophyll.Which color of light does chlorophyll b absorb more of than any other color?

red

yellow

green

blue

Free Preview

Look at the picture below.What macromolecules make up most of the structure that is shown?

carbohydrates

lipids

nucleic acids

proteins

Suzanne has type A– blood. Which blood type could she receive in a blood transfusion?

A+

O–

O+

B–

Which factor can decrease the rate of a chemical reaction?

low activation energy

high pressure

low temperature

high concentration of enzyme

Drosophila eye color is an X-linked trait. Red eye color is dominant, and white eye color is recessive. Which Punnett square shows a cross in which the probability that offspring will be red-eyed males is 25 percent?

A Punnett square is shown. The columns are labeled Upper X r and Upper Y. The rows are labeled x Upper R and x Upper R. Clockwise, from top-left, the boxes include: X Upper R X r, X Upper R Y, X Upper R Y, X Upper R X r.

A Punnett square is shown. The columns are labeled Upper X r and Upper Y. The rows are labeled x Upper R and x r. Clockwise, from top-left, the boxes include: Upper X r Upper X r, Upper X r Upper Y, Upper X r Upper Y, Upper X r Upper X r.

A Punnett square is shown. The columns are labeled Upper X r and Upper Y. The rows are labeled x r and x r. Clockwise, from top-left, the boxes include: Upper X r Upper X r, Upper X r Upper Y, X r Upper Y, Upper X r Upper X r.

A Punnett square is shown. The columns are labeled Upper X Upper R and UpperY. The rows are labeled x r and x r. Clockwise, from top-left, the boxes include: Upper X r Upper X Upper R, Upper X r Upper Y, X r Upper X Upper R, Upper X r Upper X Upper R.

Mitosis is important because it allows

new cells to replace old damaged cells.

new cells to repair old damaged cells.

old cells to self-repair when they become damaged.

existing cells to take over the function of damaged cells.

Katie wants to make ball-and-stick models of the four macromolecules. She has colored balls for each of the elements in these molecules, including the following. red: hydrogen black: carbon purple: oxygen green: nitrogenIn which macromolecule will she use the black, red, and purple balls in a ratio of 1:2:1?

carbohydrates

lipids

nucleic acids

proteins

How many homologous chromosome alignments are possible for independent assortment during meiosis?

one

two

three

four

What observation led researchers to propose that chloroplasts evolved from cyanobacteria?

Both produce proteins.

Both contain mitochondria.

Both provide structure to cells.

Both perform photosynthesis.

Which of the following could be a nucleotide of DNA?

deoxyribose + phosphate group + thymine

deoxyribose + phosphate group + uracil

ribose + phosphate group + thymine

ribose + phosphate group + uracil

How does the cell wall protect a plant cell?

The cell wall protects the cell by providing support and maintaining the cell's shape.

The cell wall protects the cell by storing food so the plant doesn't run out.

The cell wall is thin and flexible, which allows the cell to be moved without harming the organelles.

The cell wall is on the inside of the cell and serves to contain the contents of the cell.

Mitosis is divided into phases.Which phase of mitosis is shown in the diagram?

anaphase

metaphase

telophase

prophase

Which is a component of the modern cell theory that was not part of the original cell theory?

All organisms are made of cells.

All cells are similar in composition and metabolic activities.

All cells come from preexisting cells.

A cell is the basic unit of structure and function for all living things.

Which are produced as a result of meiosis?

zygotes

chromosomes

tetrads

gametes

Pea plants can have yellow seeds or green seeds. Which conclusion about the meaning of Y is correct if the allele combination Yy is for yellow seeds?

yellow and dominant

green and recessive

yellow and recessive

green and dominant

If the endoplasmic reticulum were removed from the cell, which organelle would not be able to function properly, and why?

mitochondria, because they rely on the ER as an energy source

ribosomes, because they receive proteins made by the ER

Golgi apparatus, because it packages proteins received from the ER

cytoplasm, because it relies on the ER for structural support

Which element is most important for adding strength to hair, feathers, and outer skin?

oxygen

hydrogen

sulfur

phosphorus

The first strands of DNA were observed through which microscope?

tunneling microscope

simple microscope

compound light microscope

electron microscope

Which organisms are prokaryotes?

archaea

fungi

protists

plants

If a scientist wanted to follow Mendel’s experiment with a different kind of plant, which type of plant would she examine?

A plant that cannot self-pollinate.

A plant that has only recessive alleles.

A plant that has three alleles for a trait.

A plant that has only two alleles for a trait.

Unattached earlobes is a dominant trait, E. A parent who is homozygous for unattached earlobes is crossed with a parent who is homozygous for attached earlobes. Which describes the genotypes of their offspring?

100 percent Ee

100 percent unattached earlobes

100 percent ee

100 percent attached earlobes

Red-green color blindness is an X-linked recessive disorder that is passed through generations and can be traced by using a pedigree. Which individuals in the pedigree are identified and labeled carriers for red-green color blindness?

Lisa and Monica

Sam, Tim, Bella, and Joshua

Ben, Jenny, Mike, Carol, Katie, and Chris

Ben and Lisa

Which best describes the relationship between DNA, genes, and chromosomes?

DNA are segments of genes; the genes form tight coils called chromosomes.

Genes are segments of DNA; the DNA forms tight coils called chromosomes.

Chromosomes are segments of DNA; the DNA forms tight coils called genes.

Genes are segments of chromosomes; the chromosomes form tight coils called DNA.

Which characteristic of life best describes the life cycle of a frog?

having cells

using energy

responding to the environment

growing and developing

The chemical equation of photosynthesis includes 6O2. Which best describes this substance?

a solid used during photosynthesis

a gas used during photosynthesis

a liquid produced during photosynthesis

a gas produced during photosynthesis

Which term refers to a solution with a higher solute concentration outside the cell than inside the cell?

hypertonic

hypotonic

equitonic

isotonic

Drinking too much water during exercise can cause a condition in which the concentration of sodium in the blood is lower than normal. What immediate response would the blood cells have in this condition?

Cells swell as water moves into them.

Cells swell as water moves out of them.

Cells shrivel as water moves out of them.

Cells shrivel as water moves into them.

How were Redi’s and Pasteur’s experiments different?

Redi studied broth, but Pasteur tested meat.

Pasteur studied flies, but Redi tested meat.

Pasteur tested for microorganisms, but Redi studied larger organisms.

Redi tested for microorganisms, but Pasteur studied larger organisms.

Which substance is a compound?

salt

phosphorus

sulfur

oxygen

During transcription, what happens to the RNA polymerase if a repressor protein attaches to the operator?

It begins transcription.

It begins translation.

It cannot attach to enzyme 1.

It cannot attach to the promoter.

What is the next step in the process after a substrate enters the active site of an enzyme?

The chemical reaction occurs.

New substances called products are formed.

The enzyme and the substrate bind to form the enzyme-substrate complex.

The enzyme and the products bind to form the enzyme-products complex.

Under certain external conditions, a person will perspire a great deal. For which internal condition does this response primarily provide homeostasis?

water balance

electrolyte balance

temperature balance

energy balance

Which statement describes the F1 generation of a Mendelian monohybrid cross between two true-breeding parents?

Only the dominant trait is visible in the F1 generation.

Only the recessive trait is visible in the F1 generation.

Neither the dominant nor recessive trait is visible in the F1 generation.

Both the dominant and recessive traits are visible in the F1 generation.

Punnett squares are used to show possible combinations of alleles or to predict the probability of a trait occurring in offspring. A parakeet that is heterozygous for blue feathers (dominant) is crossed with a parakeet that is homozygous for white feathers (recessive). According to the Punnett square for this cross, what percentage of offspring is predicted to have blue feathers?

25 percent

50 percent

75 percent

100 percent

Punnett squares are used to show possible combinations of alleles or to predict the probability of a trait occurring in offspring. A pansy that is homozygous for purple flowers (PP) is crossed with a pansy that is homozygous for pink flowers (pp). Which genotypes will be included for the offspring in the Punnett square for this cross?

PP, Pp, and pp

PP and pp

PP and Pp

Pp only

Error

Answer not available

A zygote consists of how many cells?

one

two

four or five

eight or ten

Mutations within an organism can occur in body cells or reproductive cells. Which type of mutation is seen in a sperm cell but not in a skin cell?

somatic mutation

missense mutation

nonsense mutation

germline mutation

Error

Answer not available

During which process is mRNA synthesized from a DNA template with the aid of RNA polymerase?

transcription

translation

translocation

transportation

During which stage of cellular respiration is glucose broken down into two molecules of pyruvic acid?

electron transport chain

glycolysis

Krebs cycle

acetyl CoA formation

Which statement best describes how Watson and Crick's model used other scientists' work to create a model of DNA?

They used Chargaff's rule to determine that it contains ribose sugar.

They used Franklin's photo to determine that DNA was a double helix.

They used Levene's work to determine the number of base pairs in each strand.

They used Nirenberg and Matthei's studies to determine that DNA is made of nucleotides.

During which process is ethanol produced?

lactic acid fermentation

alcohol fermentation

citric acid cycle

electron transport chain

Which statement best describes an understanding of genetics that would be missing without the work of Mendel?

The DNA codes for traits would not be known.

The protein codes for traits would not be known.

Some alleles are dominant, and some alleles are recessive.

Offspring receive two copies of each allele from each parent.

Which term describes a pure substance that is made up of only one type of atom?

matter

rock

compound

element

The picture shows a carafe of olive oil.What is one of the primary functions of this food in the body?

building proteins

storing energy

providing structure to cell walls

carrying genetic information

Which was not a result of the 1898 discovery of the four blood types and advances made during the two World Wars?

improved blood transfusion safety

effective blood preservation solutions developed

ability to separate different parts of blood for different uses

all blood types were made universally compatible

A pea plant that has round seeds has the genotype Rr. It is crossed with a pea plant that has wrinkled seeds and the genotype rr. What is the probability that the offspring will have wrinkled seeds?

0 percent

25 percent

50 percent

75 percent

Consider the stage of cellular respiration that is shown in the diagram.What is the net ATP gain at this stage of cellular respiration?

Miles wants to write the equation for photosynthesis. The diagram below represents one of the molecules in the equation.Which chemical formula reflects the diagram?

6O12H6C

6C12H6O

O6H12C6

C6H12O6

Did you find these answers helpful?

Cumulative Exam Answers

More from this Course

TRY EDGENUITY HACKS