1. What function does the shape of the star­nosed mole’s nose serve? It helps the mole breathe under water.
It helps the mole eliminate excess heat.
It helps the mole find food.
It helps the mole dig out its burrow.
2. Which of the following do all animals not need to do in order to survive
capture prey.
obtain oxygen.
eliminate waste
avoid predators.
3. How would having a prehensile tail help a tree­dwelling chameleon?
Its tail would help it grasp branches.
Its tail would help it capture food.
Its tail would help it balance in the treetops.
Its tail would help it maintain homeostasis.
4. Which of the following is an animal waste product?
oxygen
carbon dioxide
water
energy
5. Which of the following must an animal do to survive?
Reproduce.
Breathe air.
Maintain homeostasis.
Dig a burrow

Answer:

The correct answer is "proteins in which isoleucine is inserted at some positions normally occupied by leucine".

Explanation:

The missing options of this question are:

A. proteins in which leucine is inserted at some positions normally occupied by isoleucine.

B. proteins in which isoleucine is inserted at some positions normally occupied by leucine.

C. no abnormal proteins, because the ribosomal translation machinery will recognize the inappropriately activated tRNAs and exclude them from the translation process.

D. no proteins, because the inappropriately activated tRNAs will block translation

The correct answer is option B. "proteins in which isoleucine is inserted at some positions normally occupied by leucine".

In normal conditions, the enzyme leucyl-tRNA synthetase attaches one leucine amino acid to leucyl-tRNA as part of synthesis of proteins that have one or more leucine residues in their sequences. Since the enzyme of this mutant strain of bacteria mistakenly attaches isoleucine to leucyl-tRNA 10% of the time, approximately 10% of all the proteins that normally have leucine residues will going to have isoleucine. Therefore, These bacteria will synthesize proteins in which isoleucine is inserted at some positions normally occupied by leucine.

Answer: If it wasn't for Sexual reproduction , the passing of mutations from on...

Explanation:

There are several types of reproduction that living things present, but they can all be grouped into two broad categories: asexual and sexual reproduction. Sexual reproduction considered to be more complex is characterized by the presence of meiotic gametes and, consequently, by recombination of genes, resulting in genetic variability, genetically different from their progenitors. It can occur by conjugation (present in bacteria, protozoa, and algae), autogamy (present in protozoa) and syngamy (present in most living things).

I'd say it's (A)/ Calcitonin since it actually decreases blood calcium levels by inhibiting stimulating osteoblasts, osteoclasts, and stimulating calcium excertion by the kidneys. I hope this response will help you.

If you are working as a forensic scientist and are given an unknown powder from a crime scene, what would you hope to find out about the powder?

If I am working as a forensic scientist and I am given  an unknown powder, I would analyze this and hope to find out where did this belong.

You find that the unknown powder contains the illegal drug cocaine. If someone where to ask you to determine the purity of the substance, what would they mean? Why is purity important in crime investigations?

The purity of the substance would mean that how much of the main component of cocaine is present in this powder. Purity is important in crime investigations because it will help you determine how much of the main component is present in that substance, the main component is the active ingredient of that substance.
Of the controlled substances, which schedule of drugs is the average person most likely to have in their homes? How are the controlled substances in this group different from those in the other schedule levels?

The schedule of drugs that is mostly present at home is antibiotics.

1.If I am working as a forensic scientist and I am given  an unknown powder, I would analyze this and hope to find out where did this belong.

2.The purity of the substance would mean that how much of the main component of cocaine is present in this powder. Purity is important in crime investigations because it will help you determine how much of the main component is present in that substance, the main component is the active ingredient of that substance.

3.The schedule of drugs that is mostly present at home is antibiotics.

When an action potential reaches presynaptic terminal on a neuron, it will induce a release of neurotransmitters from the neuron. Neurotransmitters pass through the synaptic cleft and bind to the receptor on a postsynaptic neuron.