question

The creation of offspring carrying genetic information from just a single parent is called ____

answer

A) asexual reproduction

question

Which one of the following is a a difference between sexual and asexual reproduction?

answer

D) sexual reproduction is more likely to increase genetic variation than is asexual reproduction

question

Strictly speaking, the phrase, " like begets like" refers to

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Asexual reproduction only

question

With the exception of identical twins , siblings who have the same 2 biological parents are likely to look similar but not identical to each other because they have _____

answer

A similar but not identical combination of genes

question

Virchow's simple and profound principle, stated formally in 1858, was that ____

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Every cell forms a cell

question

Which one of the following is false? Cell division _____

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Is common is eukaryotes but rare in prokaryotes

question

Which one of he following is false?

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Prokaryotic chromosomes are more complex than those of eukaryotes

question

Sister chromatids are___

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Tightly linked together at a centromere

question

Compared to prokaryotic chromosomes, eukaryotic chromosomes _____

answer

Are housed in a membrane-enclosed nucleus

question

Prior to mitosis, each chromosome of a eukaryotic cell consists of a pair of identical structures called ____

answer

Sister chromatids

question

Which of the following help maintain the structure of chromosomes and control the activity of genes?

answer

Proteins

question

Eukaryotic cells spend most of their cell cycle in which phase?

answer

Interphase

question

The process by which the cytoplasm of a eukaryotic cell divides to produce 2 cells is called

answer

Cytokinesis

question

If the S phase was eliminated from the cell cycle, the daughter cells would _____

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Have half the genetic material found in the parental cell

question

Which of the following occurs during interphase?

answer

Cell growth and duplication of the chromosomes

question

Looking into your microscope, you spot an unusual cell. Instead of the typical rounded cell shape, the cell has a bee narrow middle separating 2 bulging ends. It sort of looks like the number 8! Then you realize this is a cell

answer

Undergoing cytokinesis

question

The phase of mitosis during which the nuclear envelope fragments and the nucleoli disappear is called

answer

Prophase

question

During which phase of mitosis do the chromosomes line up on a plane located equidistant from the 2 spindle poles?

answer

Metaphase

question

Which of the following does NOT occur during mitotic anaphase ?

answer

The chromatid DNA replicates

question

During which phase of mitosis does the nuclear envelope re-form and the nucleoli reappear?

answer

Telophase

question

Which of the following is a feature of plant cell division that distinguishes it from animal cell division?

answer

A cell plate forms

question

Which of the following is likely to account for the difference between plant and animal cell cytokinesis?

answer

Plant cell division must maintain the integrity of the cell wall.

question

Which of the following must occur for a plant or animal to grow and develop normally?

answer

It just be able to control the timing and rate of cell Division in different parts of its body

question

When animal cells are grown in a Petri dish, they typically stop dividing once they have formed a single, unbroken layer on the bottom of the dish. This arrest of division of an example of

answer

Density-dependent inhibition

question

Which of the following is probably the main factor responsible for the phenomenon of density-dependent inhibition?

answer

A shortage of growth factors

question

As a patch of scraped skin heals, the cells fill in the injured area but do not grow beyond that. This is an example of ____

answer

Density-dependent inhibition

question

Mature human nerve cells and muscle cells are____

answer

Permanently in a state on non division

question

The cell cycle control system ____

answer

All of the choices are correct

question

Which of the following is most like the cell cycle control system?

answer

The control device of an automatic washing machine

question

You are asked to culture an unidentifed sample of animal tissue. You notice that the cells seem not to exhibit density-dependent inhibition. Which of the following choices would be the most likely source for this tissue example?

answer

A cancer

question

A benign tumor differs from a malignant tumor in that a benign tumor _____

answer

Does not metasize

question

You are the director of research for a drug company. A list of candidate drugs is brought to you. Which of the following shows the greatest promise as a cancer chemotherapy agent? A drug that _______

answer

Prevents sister chromatids from separating at anaphase

question

Which of the following is NOT a function of mitosis? Mitosis helps organisms____

answer

All choices are correct

question

2 chromosomes in a nucleus that carry loci for the same traits in the same positions on the chromosomes but specify different versions of some traits constitute a pair of _______

answer

Homologous chromosomes

question

Which of the following is most like a pair of male human sex chromosomes?

answer

A bride and groom

question

Which of the following statements is false?

answer

Gametes are made by mitosis

question

Which of the following statements is FALSE?

answer

Mitosis produces daughter cells with half the number of chromosomes as the parent cell

question

Which of the following does NOT enhance genetic diversity?

answer

Mitosis of somatic cells

question

Independent orientation of chromosomes at metaphase I results in an increase in the number or____

answer

Possible combinations of characteristics

question

Independent orientation or chromosomes at metaphase 1 and random fertilization are most like

answer

Shuffling cards and dealing our hands of poker

question

Cancer is not usually inherited because _____

answer

The chromosomal changes in cancer are usually confined to somatic cells

question

The genetic material is duplicated in _____

answer

The S phase

question

Asexual reproduction requires _____ individual(s)

answer

1

question

Which of the following people conducted experiments that demonstrated that DNA is the genetic material is bacteriophages

answer

Hershey and chase

question

The sex chromosome complements of both normal human and normal mendalien males is ____

answer

XY

question

When a T2 bacteriophage infects ah E.coli cell, what part of the phage enters the bacterial cytoplasm?

answer

Only the DNA

question

The way that genetic material of a bacteriophage enters a bacterium is most like the way that ___

answer

A drug is injected with a hypodermic needle

question

The monomers of DNA and RNA are______

answer

Nucleotides

question

Which one of the following is FALSE?

answer

RNA uses the sugar dextrose

question

Which one of the following is FALSE?

answer

DNA uses the nitrogenous base uracil

question

Which of the following is false?

answer

The sequence of nucleotides along the length of a DNA strand is restricted by the base-pairing rules

question

How would the shape of a DNA molecule change if adenine paired with guanine and cytosine paired with thymine? The DNA molecule would look _______

answer

Have irregular widths along its length

question

The shape of a DNA molecule is most like ______

answer

A twisted rope ladder

question

DNA replication ______

answer

Uses each strand of DNA molecule as a template for the creation of a new strand

question

If one strand of DNA is CGGTAC, the corresponding strand would be _______

answer

GCCATG

question

The copying mechanism of DNA is most like ______

answer

Using a photographic negative to make a positive image

question

When one DNA molecule is copied to make 2 DNA molecules, the New DNA contains

answer

50% of the parent DNA

question

Multiple origins of replication on the DNA molecules of eukaryotic cells serve to _______

answer

Shorten the time necessary for DNA replication

question

Why does a DNA strand grow only in the 5' to 3' direction?

answer

Because DNA polymerase can only add nucleotides to the 3' end of the molecule

question

Which of the following enzymes catalyzes the linking together of RNA nucleotides to form RNA?

answer

RNA polymerase

question

Which of the following occurs when RNA polymerase attaches to the promoter DNA?

answer

Initiation of a new RNA molecule

question

Which of the following statements above ribosomes is false?

answer

The ribosomes of prokaryotes and eukaryotes are the same in structure and function

question

Any change in the nucleotide sequence of DNA is called ______

answer

A mutation

question

A physical or chemical agent that changes the nucleotide sequence of DNA is called ______

answer

A mutagen

question

Consider the following sequence: "The dog did not eat" which of the following variations of this sentence is most like a reading frame mutation

answer

The dod idn ote at.

question

Which of the following is always true with regard to a DNA double helix?

answer

Amount of adenine equals the amount of thymine and the amount of guanine is equal to the amount of cytosine

question

What enzyme catalyzes the elongation of a new DNA strand?

answer

DNA polymerase

question

What enzyme catalyzes the unwinding of DNA double helix?

answer

Helicase

Biology Chapters 8 and some of 10 – Flashcards

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