Which of these statements about DNA is true?
(1 point)
All animals have DNA.
DNA is too similar to use for grouping organisms.
DNA is a protein.
Proteins signal the cells to make DNA.
Which characteristic is common among vertebrates? (1 point)
eat with teeth
breathe with lungs or gills
supported by an exoskeleton
make own food
Which characteristic is common to a starfish and snail? (1 point)
both are invertebrates
both are mollusks
both are echinoderms
both are the same size
1. All animals have DNA
2. Breathe with lungs or gills
3.Both are invertebrates
4. Animals consume other organisms
1. all animals have DNA
2. breathe with lungs or gills
3. both are invertebrates
4. animals consume other organisms
5. sponges do not make their own food
drphilswaitlist is right!
- have a nice day 💗
drphilswaitlist is 100% correct
"have a nice day 💗" is correct.
also i am having a nice day. fsa scared me though
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To answer the first question about DNA, we need to evaluate each statement.
Statement 1: "All animals have DNA." This statement is true. DNA is the genetic material present in all living organisms, including animals.
Statement 2: "DNA is too similar to use for grouping organisms." This statement is false. DNA is commonly used for grouping organisms and determining their evolutionary relationships. DNA sequences can provide valuable information about the relatedness of different species.
Statement 3: "DNA is a protein." This statement is false. DNA is a nucleic acid, not a protein. Proteins are composed of amino acids, while DNA consists of nucleotides.
Statement 4: "Proteins signal the cells to make DNA." This statement is false. Proteins do not directly signal cells to make DNA. DNA acts as the template for the synthesis of proteins through a process called transcription and translation.
Therefore, the correct statement about DNA is: "All animals have DNA."
Moving to the second question about shared characteristics among vertebrates.
Statement 1: "Eat with teeth." This characteristic is common among vertebrates. Vertebrates have specialized structures like teeth for acquiring and consuming food.
Statement 2: "Breathe with lungs or gills." This characteristic is common among vertebrates. Vertebrates have respiratory organs such as lungs or gills for obtaining oxygen from the environment.
Statement 3: "Supported by an exoskeleton." This characteristic is not common among vertebrates. Vertebrates have an internal skeleton composed of bone or cartilage.
Statement 4: "Make own food." This characteristic is not common among vertebrates. Vertebrates are heterotrophs, meaning they obtain their food from external sources rather than producing it themselves.
Therefore, the correct characteristic common among vertebrates is: "Eat with teeth."
Lastly, the question about shared characteristics between a starfish and snail.
Statement 1: "Both are invertebrates." This statement is true. Both starfish and snails are invertebrates, meaning they do not possess a backbone.
Statement 2: "Both are mollusks." This statement is false. Starfish belong to the phylum Echinodermata, while snails belong to the phylum Mollusca. They are not classified under the same group.
Statement 3: "Both are echinoderms." This statement is false. Only starfish (also known as sea stars) belong to the phylum Echinodermata. Snails belong to the phylum Mollusca.
Statement 4: "Both are the same size." This statement is not relevant to determining common characteristics between starfish and snails.
Therefore, the correct characteristic shared by starfish and snail is: "Both are invertebrates."
1. All animals have DNA
2. IDK
3. IDK
A
B
C
C