preAP Spring 2019 Final Exam (2)

Question 1

A bird beak & a giant squid beak evolved independently & serve the same function. The beaks are

Accepted Answer

analogous structures.

Question 2

According to Darwin, evolution occurs

Accepted Answer

because of natural selection.

Question 3

Which of the following represents the genotype of a pea plant that's heterozygous for tallness?

Accepted Answer

Tt

Question 4

Each nucleotide triplet in mRNA that specifies a particular amino acid is called a(n)

Accepted Answer

codon

Question 5

The process by which a population becomes better suited to its environment is known as

Accepted Answer

adaptation.

Question 6

What preserves the genetic code from one generation to the next?

Accepted Answer

DNA replication

Question 7

The finches Darwin observed differed in shape of beaks. He said all of these species probably

Accepted Answer

had a common ancestor.

Question 8

A strand of DNA contains bases TACGAT replicates. Which sequence is in the new strand produced?

Accepted Answer

ATGCTA

Question 9

The two chains of the DNA molecule are held together by _________.

Accepted Answer

hydrogen bonds

Question 10

Which is best explanation for the presence of both chloroplasts & mitochondria in plant cells?

Accepted Answer

Sugars are produced in chloroplasts

Question 11

You notice chromosomes appear to be lined up in the middle of the cell, what stage of mitosis?

Accepted Answer

metaphase

Question 12

Which of the following is representative of a gamete?

Accepted Answer

an egg cell (Ova)

Question 13

Which series is arranged in order from largest to smallest in size?

Accepted Answer

cell, nucleus, chromosome, DNA, nucleotide

Question 14

Which of the following types of RNA carries instructions for making proteins?

Accepted Answer

mRNA

Question 15

In RNA, the base thymine is replaced by a structurally similar base called

Accepted Answer

uracil

Question 16

Darwin drew ideas for his theory from observations of organisms on

Accepted Answer

the Galápagos Islands.

Question 17

What is the purpose of mitosis?

Accepted Answer

To produce 2 cells each with 1 complete set of chromosomes

Question 18

The base-pairing rules state that the following are base pairs in DNA:

Accepted Answer

adenine—thymine; guanine—cytosine

Question 19

In what type of cells does meiosis occur?

Accepted Answer

reproductive cells (sex cells)

Question 20

As a result of base pairing in DNA, there is the same number of which two bases?

Accepted Answer

guanine & cytosine

Question 21

RNA is unlike DNA in that it only has one strand. Why is RNA still very important?

Accepted Answer

It carries genetic info from genes of nucleus into cytoplasm

Question 22

Evidence that evolution occurs includes all of the following except

Accepted Answer

acquired characteristics.

Question 23

Which process requires meiosis?

Accepted Answer

sperm production

Question 24

Chlorophyll is green because

Accepted Answer

it reflects green wavelengths of light.

Question 25

In rabbits, black fur (B) is dominant over brown fur (b). Both of the parents in the cross are

Accepted Answer

black

preAP Spring 2019 Final Exam (2)

Questions 25

preAP Spring 2019 Final Exam (2)

Questions 25