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olga2289 [7]
3 years ago
7

The spectrum of a distant star contains sodium lines that are offset from their normal position, as shown. What is the most like

ly explanation?
A. The star is relatively hot.
B. The star is relatively cool.
C. The star is moving rapidly toward us.
D. The star is moving rapidly away from us.

Biology
1 answer:
monitta3 years ago
6 0

Answer:

C.The star is moving rapidly toward us

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Chapter 1: Introduction: Evolution and the Foundations of Biology 1. _______ DNA is composed of building blocks called _____. a.
irina [24]

Answer:

C. Nucleotides

Explanation:

Nucleic acids are macromolecules which are polymers of nucleotides. There are two types of nucleic acids namely: deoxyribonucleic acid (DNA) and ribonucleic acid (RNA). Nucleotides are the building blocks of nucleic acids.

A nucleotide is made up of three components:

- A phosphate group

- A five carbon sugar called pentose sugar. In RNA the sugar is ribose sugar and in DNA the sugar is deoxyribose sugar.

- Nitrogenous bases: There are four different types of bases in DNA: adenine, guanine, cytosine and thymine. In RNA thymine is replaced by uracil. Adenine and guanine are purines whereas cytosine, thymine and uracil are pyrimidines.

Nitrogenous base and sugar together are called nucleoside and when phosphate is also attached then it is called nucleotide.

6 0
3 years ago
Which of the following is NOT true of the plasma membrane?
siniylev [52]

Answer:

Option C. It is found only in a eukaryotic cell.

Explanation:

Plasma membrane is also called cell membrane. It is found in all cells of living organisms both unicellular and multicellular. It controls the amount of nutrients and wastes entering or leaving a cell. Due to permeability, the substances are easily pass through. Plasma membrane also act as boundary of animal cell.

6 0
3 years ago
Why don't epidermal ridges form in thin skin?
xxTIMURxx [149]
Thin Skin. The epidermis differs from that of thick skin in having thinner stratum spinosum, granulosum, and corneum, and lacks the stratum lucidum (Thin Skin 1). The dermis is not arranged in ridges, but does project into the epidermis as true papillae. However, no epidermal ridges are produced
7 0
3 years ago
where might we see changes in concentration in nature and how could these changes affect living organisms?​
tekilochka [14]

Answer:

Explanation:

Any change in the climate of an area can affect the plants and animals living there, as well as the makeup of the entire ecosystem. Some species are already responding to a warmer climate by moving to cooler locations. ... Climate change also alters the life cycles of plants and animals

7 0
2 years ago
What are the principles of medication administration
Natali [406]

Answer:

This tool is divided into three sections representing the principles in the Medication practice standard: authority, competence, and safety.

Explanation:

Rights of Medication Administration

1. Right patient

  • Check the name of the order and the patient.
  • Use 2 identifiers.
  • Ask patient to identify himself/herself.

2. Right medication

  • Check the medication label.
  • Check the order.

3. Right dose

  • Check the order.
  • Confirm the appropriateness of the dose using a current drug reference.

4. Right route

  • Again, check the order and appropriateness of the route ordered.
  • Confirm that the patient can take or receive the medication by the ordered route.

5. Right time

  • Check the frequency of the ordered medication.
  • Double-check that you are giving the ordered dose at the correct time.
  • Confirm when the last dose was given.

6. Right documentation

  • Document administration AFTER giving the ordered medication.
  • Chart the time, route, and any other specific information as necessary.

7. Right reason

  • Confirm the rationale for the ordered medication.  What is the patient’s history? Why is he/she taking this medication?

8. Right response

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3 years ago
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