AnswersLincoln Biology A-CRCumulative Exam

Cumulative Exam — Cumulative exam Answers

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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?

Question illustration
A
red
B
yellow
C
green
D
blue
2
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Look at the picture below.What macromolecules make up most of the structure that is shown?

Question illustration
A
carbohydrates
B
lipids
C
nucleic acids
D
proteins
3

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

A
A+
B
O–
C
O+
D
B–
4

Which factor can decrease the rate of a chemical reaction?

A
low activation energy
B
high pressure
C
low temperature
D
high concentration of enzyme
5

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
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.
Option A
B
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.
Option B
C
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.
Option C
D
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.
Option D
6

Mitosis is important because it allows

A
new cells to replace old damaged cells.
B
new cells to repair old damaged cells.
C
old cells to self-repair when they become damaged.
D
existing cells to take over the function of damaged cells.
7

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?

A
carbohydrates
B
lipids
C
nucleic acids
D
proteins
8

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

A
one
B
two
C
three
D
four
9

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

A
Both produce proteins.
B
Both contain mitochondria.
C
Both provide structure to cells.
D
Both perform photosynthesis.
10

Which of the following could be a nucleotide of DNA?

A
deoxyribose + phosphate group + thymine
B
deoxyribose + phosphate group + uracil
C
ribose + phosphate group + thymine
D
ribose + phosphate group + uracil
11

How does the cell wall protect a plant cell?

A
The cell wall protects the cell by providing support and maintaining the cell's shape.
B
The cell wall protects the cell by storing food so the plant doesn't run out.
C
The cell wall is thin and flexible, which allows the cell to be moved without harming the organelles.
D
The cell wall is on the inside of the cell and serves to contain the contents of the cell.
12

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

Question illustration
A
anaphase
B
metaphase
C
telophase
D
prophase
13

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

A
All organisms are made of cells.
B
All cells are similar in composition and metabolic activities.
C
All cells come from preexisting cells.
D
A cell is the basic unit of structure and function for all living things.
14

Which are produced as a result of meiosis?

A
zygotes
B
chromosomes
C
tetrads
D
gametes
15

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?

A
yellow and dominant
B
green and recessive
C
yellow and recessive
D
green and dominant
16

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

A
mitochondria, because they rely on the ER as an energy source
B
ribosomes, because they receive proteins made by the ER
C
Golgi apparatus, because it packages proteins received from the ER
D
cytoplasm, because it relies on the ER for structural support
17

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

A
oxygen
B
hydrogen
C
sulfur
D
phosphorus
18

The first strands of DNA were observed through which microscope?

A
tunneling microscope
B
simple microscope
C
compound light microscope
D
electron microscope
19

Which organisms are prokaryotes?

A
archaea
B
fungi
C
protists
D
plants
20

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

A
A plant that cannot self-pollinate.
B
A plant that has only recessive alleles.
C
A plant that has three alleles for a trait.
D
A plant that has only two alleles for a trait.

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