For a molecule to be considered organic what elements must be present? A. Carbon only B. Oxygen and hydrogen C. Carbon and hydrogen D. Carbon and oxygen
For a molecule to be considered organic elements must be present in Carbon and hydrogen. The answer to your question would be letter C. These are use in order to create an element which is further used all living organisms in living.
for a molecule to be organic, it has to contain a backbone of carbon and some hydrogen so the answer would be C.
What do I already know about chemical and physical properties and changes? Identifying Pure Substances Which of the following is a pure substance? Select all that apply. A. air B. distilled water C. iron sulfide D. oxygen gas E. seawater F. sodium chloride
Answer: db a
Which tool is generally used to compare the masses of objects? *1 point A meter stick A two-pan balance A hot plate A graduated cylinder
A two pane balancer that one
The answer is a two- pan balance
What is enzyme, a substrate and competitive enzyme inhibition?
Enzyme: A biomolecule that speed up the rate of chemical reactions without being used up.
Substrate: A substance or chemical that enter the chemical reaction and is being converted into a new substance (product).
Competitive enzyme inhibition: Inhibition of enzyme's activity by binding of inhibitor to substrate binding site of the enzyme.
Enzymes are the biomolecules that serve to increase the rate of reactions by lowering down the required activation energy. The enzyme is never used up during reactions.
Substrates are the chemicals that undergo a chemical change and produce products.
For example, Glucose is the substrate for hexokinase enzyme and is converted into glucose 6 phosphate (the product).
When the inhibitor competes with the substrate for the binding site on the enzyme and does not allow the substrate to bind to the enzyme, the process is called competitive enzyme inhibition. It can be overcome by increasing the concentration of substrate in the system.
Anything written about about an issue/person after the fact is a ________ sourcea.primary b.secondary
A secondary source is anything written after the fact
Anything written about an issue/person after the fact is a SECONDARY source. A primary source would be the person them self sharing with you,or you witnessing the action or event.
In the 18th century, a young boy suffered from a skin condition that included thickening of the skin and the formation of loose spines that were periodically sloughed off. This "porcupine man" married and had six sons, all of whom had the same condition. He also had several daughters, all of whom were unaffected. What might you theorize about the location of the abnormal gene?
The abnormal gene must have been located on the Y chromosome which is responsible for baby boys hence all his sons had the abnormal condition while none of his daughters had the condition.
Genes are the units of inheritance located on the chromosomes. Since the genes are located on the chromosomes, the chromosome involves determines what traits are transmitted.
For the porcupine man, the abnormal gene must have been located on the Y chromosome which is responsible for baby boys hence all his sons had the abnormal condition while none of his daughters had the condition.
THE DOMINANT GENE CAME FROM THE FATHER TO ONLY THE SONS THE RECCESIVE GENE WENT TO HIS DAUGHTERS
In which of the following circumstances may animal work begin before receipt of IACUC approval? A. It is a continuing study awaiting three year renewal and for which the renewal protocol has been submitted to the IACUC. B. It is a small pilot study on non-AWAR species. C. It is a teaching activity that uses students' personally owned dogs and cats. D. There are no circumstances in which animal work may begin before IACUC approval.
Answer: the correct option is D (There are no circumstances in which animal work may begin before IACUC approval)
The IACUC known as Institutional Animal Care and Use Committees is a local working group that research facilities must appoint in accordance with the Animal Welfare Act , Policy on Human Care and Use of Laboratory Animals. It was introduced to research system by the U.S. government in 1986. The policy protects all warm-blooded animals except rats, mice, and birds bred for research. For an institution to use a specie that is covered by the policy, it must obtain their approval before work begins. I hope this helps. Thanks.