Evidence for Common Characteristics Quick Check
1 of 41 of 4 Items
Question
Which of these statements about DNA is true?
(1 point)
Responses
Proteins signal the cells to make DNA.
All animals have DNA.
DNA is a protein.
DNA is too similar to use for grouping organisms.
Which characteristic is common among vertebrates?(1 point)
Responses
supported by an exoskeleton
eat with teeth
breathe with lungs or gills
make own food
Which characteristic is common to a starfish and snail?(1 point)
Responses
both are invertebrates
both are mollusks
both are the same size
both are echinoderms
Which characteristic distinguishes animals from plants?(1 point)
Responses
Plants evolve through natural selection.
Plants are made of cells.
Animals consume other organisms.
Animals reproduce.
If someone could help me with this, I'd really appreciate it, thank you!
The correct answers are:
- All animals have DNA. (first question)
- breathe with lungs or gills. (second question)
- both are invertebrates. (third question)
- Animals consume other organisms. (fourth question)
THANK YOU SO MUCH!!!!
I just took the quick check, and I promise these are 100% correct!!
For the first question, the correct statement about DNA is: "All animals have DNA."
For the second question, the characteristic common among vertebrates is: "breathe with lungs or gills."
For the third question, the characteristic common to a starfish and snail is: "both are invertebrates."
For the fourth question, the characteristic that distinguishes animals from plants is: "Animals consume other organisms."
To find the answer to the first question, "Which of these statements about DNA is true?", you need to evaluate each statement and determine which one is correct.
Statement 1: Proteins signal the cells to make DNA. This statement is incorrect because proteins do not signal cells to make DNA. Proteins are involved in various cellular processes, but they do not specifically signal the production of DNA.
Statement 2: All animals have DNA. This statement is true. DNA is the genetic material that carries the instructions for the development, functioning, and reproduction of all living organisms, including animals.
Statement 3: DNA is a protein. This statement is incorrect. DNA is a nucleic acid, not a protein. Proteins are molecules made up of chains of amino acids, while DNA is made up of nucleotides.
Statement 4: DNA is too similar to use for grouping organisms. This statement is incorrect. DNA is actually a highly effective tool for grouping organisms and determining their relationships. DNA sequencing and analysis techniques are widely used in the field of taxonomy to classify and categorize different species.
Based on the evaluation, the correct answer is: All animals have DNA.
Moving on to the second question, "Which characteristic is common among vertebrates?" you need to evaluate each option to find the common characteristic.
Option 1: Supported by an exoskeleton. This option is incorrect because vertebrates have an endoskeleton, not an exoskeleton.
Option 2: Eat with teeth. This option is incorrect because not all vertebrates have teeth. Some vertebrates, like baleen whales, do not have teeth and instead filter feed.
Option 3: Breathe with lungs or gills. This option is correct. Vertebrates can breathe using either lungs or gills, depending on their aquatic or terrestrial nature.
Option 4: Make own food. This option is incorrect because vertebrates cannot make their own food. They are heterotrophs and obtain their energy by consuming other organisms.
Based on the evaluation, the correct answer is: Breathe with lungs or gills.
Moving on to the third question, "Which characteristic is common to a starfish and snail?", you need to evaluate each option.
Option 1: Both are invertebrates. This option is incorrect because starfish are echinoderms, which are considered invertebrates, but snails are mollusks and are also considered invertebrates. However, being invertebrates is not a characteristic common to both starfish and snails since they belong to different phyla.
Option 2: Both are mollusks. This option is incorrect because starfish are not mollusks. They belong to the phylum Echinodermata.
Option 3: Both are the same size. This option is incorrect because starfish and snails can vary in size depending on the species.
Option 4: Both are echinoderms. This option is correct. Both starfish and snails belong to different phyla, but starfish are members of the phylum Echinodermata, which also includes other organisms like sea urchins and sea cucumbers. Therefore, the correct answer is: Both are echinoderms.
Finally, for the last question, "Which characteristic distinguishes animals from plants?", you need to evaluate each option.
Option 1: Plants evolve through natural selection. This option is incorrect because both plants and animals can evolve through natural selection. Natural selection is a mechanism of evolution that applies to all living organisms.
Option 2: Plants are made of cells. This option is incorrect because both plants and animals are made up of cells. Cells are the basic structural and functional units of all living organisms.
Option 3: Animals consume other organisms. This option is correct. One of the defining characteristics of animals is that they obtain their nutrition by consuming other organisms. Animals are heterotrophs, while plants are autotrophs and can produce their own food through photosynthesis.
Option 4: Animals reproduce. This option is incorrect because both animals and plants reproduce. Reproduction is a fundamental characteristic of living organisms, and both animals and plants have different mechanisms for reproduction.
Based on the evaluation, the correct answer is: Animals consume other organisms.
I hope this helps you understand how to find the answers to these questions and the reasoning behind each choice!