Answers
Answer:
d) Organic molecules make up most nonliving things.
Explanation:
Nonliving things are not organic so they would not have organic molecules.
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Which of the folowing epithelia and/or cell surface modifications are present in large bronchi? (Check all that apply) a. clia b. goblet cells c. microvillid. pseudostratified ciliated columnar epithelium e. stratified squamous epithelium
Elijah notices a flower and sees that its color is yellow. Which of the following describes why Elijah sees this color of the flower? (SC.7.P.10.2) A. The flower absorbs and reflects light.B. The flower absorbs and refracts light.C. The flower reflects and refracts light. D. The flower refracts and blocks light.
What is the term that refers to the range of animal and plant species and the genetic variability among those species?
Answers
Answer:
Sample A: 21.3%A, 28.7% G and 28.7% C
Sample B: 27.7% A, 22.3% G and 22.3% C
Explanation:
According to Chargaff's rules of base pairing, the amount of adenine in a DNA molecule equals the amount of thymine, and the amount of G=C.
Sample A
Contains 21.3% T, so it also contains 21.3% A. Therefore A+T= 42.6%
100% - (A+T) = (G+C)
100% - 42.6% = 57.4%
G+C add up to 57.4% of the DNA in sample A. And because G=C, there's 28.7% G and 28.7% C.
Sample B
Contains 27.7% T, so it also contains 27.7% A. Therefore A+T= 55.4%
100% - 55.4% = 44.6%
G+C add up to 44.6% of the DNA in sample B.
And G=C, so there's 22.3% G and 22.3% C.
A
Carbon can form compounds of many sizes and shapes.
B
Animals need carbon in order to breathe.
C
Plants use carbon to absorb water into their roots.
D
Carbon is the most abundant element on Earth.
Answers
The correct answer A
This is in part due to carbon's ability to readily form bonds with other atoms, giving flexibility to the form and function that biomolecules can take, such as DNA and RNA, which are essential for the defining characteristics of life
Answer:
D
Explanation:
Our DNA, RNA, proteins, and something else I forget are all made of carbon. As a result, carbon is essentially one of the reasons we exist. Carbon can form connections with other atoms as well. Carbon makes up the majority of organisms.
I'm sorry if this is wrong
3' AGCTAAGGCCTTTCGAATCAAAGGGCCCTGCATAACGGTTGGATCCATTCGCGGCATTATAGGTACCCGTGG 5'
a. 5- AGCTAAGGCCTTTCGA and 5'-CCACGGGTACCTATAA
b. 5'- TCGATTCCGGAAAGCT and 5'-ACGTCCCGGGAAACTA
c. 5- TCGATTCCGGAAAGCT and 5'-CCACGGGTACCTATAA
d. 5'- TCGATTCCGGAAAGCT and 5'- GGTGCCCATGGATATT
e. 5' - GGTGCCCATGGATATT and 5' ACCTAGGTAAGCGCCG
Answers
Answer:
a. 5- AGCTAAGGCCTTTCGA and 5'-CCACGGGTACCTATAA
Explanation:
The Polymerase Chain Reaction (PCR) primers are short nucleotide sequences (composed of approximately 20 nucleotides in size) flanking a target sequence that is amplified during PCR reaction. These primers bind to the DNA template by means of complementary base pairing in order to make billions of copies of a target DNA region, which is then visualized as a band by electrophoresis. In this case, PCR primers from the item a- (i.e., AGCTAAGGCCTTTCGA and CCACGGGTACCTATAA) will bind to the DNA template of lines 1 and 2 in order to amplify a continuous region:
Schematically:
The Foward primer AGCTAAGGCCTTTCGA binds by complementary base pairing:
5'_(TCGATTCCGGAAAGCT)TAGTTTCCCGGGACGTATTGCCAACCTAGGTAAGCGCCGAATATCCATGGGCACC_3'
The Reverse primer CCACGGGTACCTATAA binds by reverse complementary base pairing:
3'_AGCTAAGGCCTTTCGAATCAAAGGGCCCTGCATAACGGTTGGATCCATTCGCGGCA(TTATAGGTACCCGTGG)_5'
B. IPCC
C. EPA
D. NOAA
Answers
the answer is A) SERI/NREL i think
A) The sperm cell donates most of the material in the cytoplasm to the zygote, including mitochondrial DNA.
B) The egg and sperm cells contribute equal amounts of mitochondrial DNA to the zygote.
C) The egg cell donates most of the material in the cytoplasm to the zygote, including mitochondrial DNA.
D) The sperm cell donates most of the DNA in the nucleus to the zygote, including mitochondrial DNA.
Answers
Answer:
The answer should be C
Explanation:
The egg contributes all the cytoplasm and organelles to the zygote. The sperm only contributes one set of chromosomes.
The typical sperm midpiece contains approximately 50-75 mitochondria with one copy of mtDNA in each. This represents an 8- to 10-fold decline in copy number during spermiogenesis.
Answers
The statement that correctly describes the presence of freckles is there are two alleles for freckles, hence option B is correct.
What is alleles?
An allele is a variation of the same sequence of nucleotides at the same place on a long DNA molecule, as described in leading textbooks on genetics and evolution.
Small, brownish to reddish dots on your skin are known as freckles. They frequently appear on your face, neck, back, upper chest, hands, and arms, as well as other sun-exposed places. Even though freckles are typically not harmful, it is always a good idea to keep an eye out for any changes.
Therefore, the statement that correctly describes the presence of freckles is there are two alleles for freckles, hence option B is correct.
Learn more about alleles, here:
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Answer:
b
Explanation:
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