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21-22 CS2A - PMA 5 Flashcards | StudBud
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21-22 CS2A - PMA 5
21-22 CS2A - PMA 5
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1
Segments of DNA that contain the code for a specific protein are known as?
chromosomes
DNA
genes
protein
2
Which field of science would be most dependent upon observation and collection of evidence?
Chemistry
Physics
Genetics
Robotics
3
if the genetic conditin being tracked is caused by a recessive allele, which represents the genotypes of the parents?
Male (MM), Female (mm)
Male (Mm ), Female (Mm)
Male (MM), Female (MM)
Male(mm), Female( mm )
4
Tissue samples were taken from Watercress plants, which samples will contain identical DNA?
Samples from petals of Plants 1 and 2, the roots of 2 and 3 and leaves 3,4.
samples from the petal of Plant 1 and petal of Plant 2
samples from all parts of all four plants
samples from the root of Plant 3 and the leaf of Plant 3,
5
The large structure that contains the genetic information and instructions for protein synthesis.
ribosomes
DNA
gene
chromosomes
6
Which sequence orders the structures of heredity from the smallest unit of orgaization to largest unit of organization?
gene, DNA, chromosome
gene, chromosome, DNA
DNA, gene, chromosome
DNA, chromsome, gene
7
Based on teh Punnett square, what can you conclude about the genotypes of the parents?
One parent must be dd and the other DD
One parent must be dd and the other Dd
One parent must be Dd and the other DD
Both parents must be Dd
8
Large fruit =L, small fruit=l; if Marcus crosses a (Ll) with a (ll) what probability of offspring will have large fruit.
50
100
25
75
9
Cattle have 60 chromosomes in each body cell. How many sperm cells will the cattle have?
60
30
90
120-
10
Which statement correctly describes the mechanisms of cell division?
meiosis produces genetically identical cells; mitosis does not.
meiosis is a form of asexual repoduction; mitosis is a form of sexual.
mitosis produces sex cell; meiosis produces body cells.
mitosis produces genetically identical cells; meiosis does not.
11
The Daphnia is often used in research. Which reason best explains why the ability to reproduce asecually is desirable?
All offspring of an individual will be genetically identical.
There will be fewer generations than it would be for sexual reproduction.
Organisms that reproduce asexually have less DNA than sexually
Researchers will not have to find mating pairs.
12
What is the definition of a DNA mutation
the strand in a double helix
change in the DNA strand
the strand with four pairs
the original DNA strand
13
Which branch of science is concerned with the study of genes, genetic variation and heredity in organisms?
genetics
physics
chemistry
biology
14
What type of model did these scientists contruct?
a physical model
a computer model
a mathematical model
a conceptufal model
15
The threadlike structures that are located inside the nucleus of the cell that hold the DNA.
gene
chromosomes
DNA
ribosomes
16
What is the relationship between DNA, chromosomes, genes, and the traits passed from parent to offspring?
Genes are made of pieces of chromosomes called DNA that control the traits.
Chromosomes are made of pieces of DNA called genes that control the traits.
Chromosomes ae made of pieces of genes called DNA that control the traits
DNA is made of pieces of chromosomes called genes that control the traits.
17
This reason expains why a student observing 2 cells to determine where the DNA is located is not experiment.
It involves only looking at part of the organism and not the whole.
There are no controls or variables to test.
An analysis of her observations would be visual instead of mathematical.
it requires the use of an expensive piece of equipment.
18
Chromosomes in the sex cells of organisms are always?
23
as many as in the body cells.
half as many as in the body cells.
twice as many as in the body cells.
19
The branch of science that studies matter, its motion and behavior through space and time, as well as, energy and force.
biology
genetics
physics
chemistry
20
Why do biologist use mice in their pursuit of scientific explanations of human?
mice eat a lot and do not move very much.
mice are smarter than humans.
mice and humans look alike.
mice and humans are genetically similar.
21
This branch of science is study of living things.
biology
chemistry
genetics
physics
22
What is the relationship between genes and chromosomes?
Genes correspond to the pheotype, chromosomes correspond to the genotype.
Genes are made up of thousands of chromosomes.
genes are pieces of DNA that are located on the chromosomes of each cell.
Chromosomes correspond to phenotype, genes correspond to the genotype.
23
This is the branch of science that deals with the identification of the substances of which matter is composed.
biology
chemistry
genetics
physics
