this is the serious of test I have from alters sci and bio lab 130 i need weeks 4-8 test, labs, final, please help asap,,, i can help anyone who needs other info i must get this done within a week, all four weeks worth... i cant thank everyone enough for helping so far, but it is all the wrong serious of stuff,,, can anyone help hope quiz one helps someone in my shoes right now,,, based on these resaults you all can tell im hurting and so is my grade thanks please shoot me an email
Part 1 of 4 - 20.0/ 25.0 Points
Question 1 of 20 5.0/ 5.0 Points
The phylum that contains animals with a backbone is:
A. Mammalia
B. Chordata
C. Brassica
D. Tamiasciurus
Answer Key: B
Feedback: Great job!
Question 2 of 20 5.0/ 5.0 Points
A forest may contain populations of bacteria, fungi, deer, frogs and salamanders. These all combine to form a(n):
A. biosphere
B. community
C. species
D. ecosystem
Answer Key: B
Feedback: Great job!
Question 3 of 20 0.0/ 5.0 Points
Which is an example of the level of organization composed of organs?
A. the heart
B. muscle tissue
C. nerve cells
D. the digestive system
Answer Key: D
Feedback: Please review Chapter 1.
Question 4 of 20 5.0/ 5.0 Points
Mycorrhizae living in association with plant roots are what type of organism?
A. fungi
B. algae
C. bacteria
D. lichens
Answer Key: A
Feedback: Excellent!
Question 5 of 20 5.0/ 5.0 Points
In biological classification, each kingdom is divided into:
A. domains
B. classes
C. phyla
D. species
Answer Key: C
Feedback: Good job!
Part 2 of 4 - 10.0/ 25.0 Points
Question 6 of 20 5.0/ 5.0 Points
Which scientist published a book in the 1500s giving evidence the Earth orbits the sun?
A. Copernicus
B. Lyell
C. Darwin
D. Galileo
Answer Key: A
Feedback: Excellent!
Question 7 of 20 0.0/ 5.0 Points
The hypothesis in a seed germination experiment is: Light is necessary for lettuce seed germination . Groups of lettuce seeds are placed in light with warm temperatures and adequate moisture. Another set of identical seeds is placed in the dark under the same conditions. What is the control?
A. seeds in the light
B. adequate moisture
C. seeds in the dark
D. warm temperatures
Answer Key: C
Feedback: Please review Chapter 2.
Question 8 of 20 0.0/ 5.0 Points
If a scientist finds that her experimental data do not support her hypothesis or a particular scientific theory, she should:
A. modify the hypothesis and perform another experiment
B. give up on that hypothesis and find another area of science to research
C. work to show that the scientific theory is incorrect
D. both b and c
Answer Key: A
Feedback: Please review Chapter 2.
Question 9 of 20 5.0/ 5.0 Points
Who proposed the theory of evolution by natural selection in 1859?
A. Darwin
B. Copernicus
C. Galileo
D. Mendel
Answer Key: A
Feedback: Good job!
Question 10 of 20 0.0/ 5.0 Points
The hypothesis in a seed germination experiment is: Light is necessary for lettuce seed germination . Groups of lettuce seeds are placed in light with warm temperatures and adequate moisture. Another set of identical seeds is placed in the dark under the same conditions.What is the dependent variable?
A. presence of light
B. presence of darkness
C. warm temperatures
D. germination rate
Answer Key: D
Feedback: Please review Chapter 2.
Part 3 of 4 - 15.0/ 25.0 Points
Question 11 of 20 5.0/ 5.0 Points
The sodium-potassium pump is important in what cell function?
A. muscle cell contraction
B. mitosis
C. photosynthesis
D. replication of DNA
Answer Key: A
Feedback: Great!
Question 12 of 20 5.0/ 5.0 Points
The lipid bilayer in the plasma membrane allows which of these to pass through?
A. oxygen
B. amino acids
C. potassium ions
D. sugars
Answer Key: A
Feedback: Excellent!
Question 13 of 20 5.0/ 5.0 Points
Transport proteins that facilitate the movement of water molecules across the cell membrane are:
A. carrier proteins
B. enzymes
C. receptor proteins
D. aquaporins
Answer Key: D
Feedback: Great job!
Question 14 of 20 0.0/ 5.0 Points
From which organelle do vesicles originate?
A. cytoskeleton
B. endoplasmic reticulum
C. lysosomes
D. ribosomes
Answer Key: B
Feedback: Please review Chapter 5.
Question 15 of 20 0.0/ 5.0 Points
Which of these is a trait of a prokaryotic cell?
A. membrane bound organelles
B. chloroplasts for photosynthesis
C. organized nucleus containing DNA
D. nucleoid region with DNA
Answer Key: D
Feedback: Please review Chapter 5.
Part 4 of 4 - 20.0/ 25.0 Points
Question 16 of 20 5.0/ 5.0 Points
The portion of a gene that will be expressed is the:
A. intron
B. exon
C. promoter
D. telomere
Answer Key: B
Feedback: Very good!
Question 17 of 20 5.0/ 5.0 Points
Which of these is an example of ionizing radiation?
A. ultraviolet radiation
B. nuclear radiation
C. All of the above
D. X-rays
Answer Key: C
Feedback: Very good!
Question 18 of 20 5.0/ 5.0 Points
All the genetic information in one complete set of hereditary material is the:
A. genome
B. chromatin
C. chromatids
D. genotype
Answer Key: A
Feedback: Very good!
Question 19 of 20 5.0/ 5.0 Points
A polypeptide is:
A. a storage form of glucose
B. a carbohydrate made of repeating units
C. composed of glycerol and fatty acids
D. a portion of a protein made of amino acids
Answer Key: D
Feedback: Great job!
Question 20 of 20 0.0/ 5.0 Points
Which statement is not true about a karyotype?
A. All eukaryotic karyotypes contain 46 chromosomes.
B. Karyotypes can be used to screen for chromosome abnormalities.
C. Chromosomes are linear in appearance.
D. Chromosomes are arranged in matched pairs.
Answer Key: A
Feedback: Please review Chapter 9.
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