BIOLOGY MIDDLE SCHOOL

What is a trait that is ancestral to all chordates? A. a jaw bone B. a notochord C. an amniotic egg D. a vertebral column

Answers

Answer 1
Answer: B. a notochord 

Chordates are a phylum in the animal kingdom which have the following characteristics

Pharyngeal gill slit
dorsal nerve
notochord
post anal tail

These organisms possess these ancestral traits which have evolved to a more complex and sophisticated features that most animals have today.
Answer 2
Answer:

B is the correct answer

Related Questions

HELP MEE!The following table describes five molecules that belong to the same class.Molecule FunctionHemoglobin transports oxygen in the bloodAmylase an enzyme that breaks down starchImmunoglobulin an antibody produced in response to an invading particleCollagen the main structural component of connective tissuesAquaporin transports water in and out of the cellWhich class of biomolecule do the molecules in the table belong to?A. carbohydratesB. lipidsC. proteinsD. nucleic acids
According to scientific evidence, earth’s earliest atmosphere lacked oxygen. Over time, oxygen was added to the atmosphere.Which statements explain how this change occurred and how it affected life on earth? Choose all answers that are correct. A. Adding oxygen to earth's atmosphere allowed for the development of prokaryotic organisms, which need oxygen to carry out many of their life processes. B. Adding oxygen to earth's atmosphere allowed for the development of eukaryotic organisms, which need oxygen to carry out many of their life processes. C. Oxygen is needed to carry out photosynthesis. When cyanobacteria evolved, they began to carry out photosynthesis. D. Oxygen is a product of photosynthesis. When cyanobacteria evolved, they began to carry out photosynthesis.
Which of the following describes cytoplasm? 1.)an organelle containing enzymes for storing energy 2.)the core of a cell where genetic material is stored and duplicated 3.)a thick liquid residing between the cell membrane holding all the cell's organelles, except for the nucleus. 4.)a membrane network involved in the synthesis and transport of cellular materials
SOMEONE HELP IM FAILING BIO What is the process that breaks down glucose? What is the product of the process?
Which of the following monomers would be used to make the double helix of a DNA molecule?

Which stage in the process of making a protein should be inserted into Step 4? 1. DNA in the nucleus contains information to code for a protein. 2.RNA stores an exact copy of the DNA sequence and then travels from the nucleus into the cytoplasm. 3. RNA reaches the ribosome. 4. __________________________ 5. The protein is then transported to its proper destination. A. A different kind of DNA decodes the information and disassembles the building blocks of the protein. B. A different kind of RNA decodes the information and assembles the building blocks of the protein. C. The same kind of DNA decodes the information and disassembles the building blocks of the protein. D. A different kind of DNA decodes the information and assembles the building blocks of the protein.

Answers

2 would be the answer for this

How does blood help maintain homeostasis in the body?

Answers

The blood is the means by which circulating several fundamental chemicals to the body balance. Consumptiom metabolism, control and structural depend on the exchange of various substances with the environment, like oxygen, carbon dioxide, glucose, amino acids and nucleic acids. Is the blood these exchanges are guaranteed. In addition, several defense cells of the organism (macrophages and lymphocytes) are present stop are essential and in the bloodstream for homeostasis. These and many other many defined do make blood a factor of great importance for the living.

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What type of mutation do Extra toed cats have? NEED HELP

Answers

Answer
polydactylism

These kitties are born with an abnormal, dominant genetic mutation called polydactylism. While the polydactyl cat's appearance is quite unique, the polydactyl gene is somewhat common. Normally kittens are born with five toes on their front paws and four in the back.

Answer:

Polydactyly

Explanation:

It is a genetic mutation that these certain cats have

Which statement comparing examples of renewable and nonrenewable resources is true? A. Solar energy is a renewable resource because it can't be used up, but oil is a nonrenewable resource because it will eventually run out. B. Both solar energy and oil are renewable resources because they will never run out. C. Solar energy is a nonrenewable resource because it can't be used up, but oil is a renewable resource because it will eventually run out. D. Both solar energy and oil are nonrenewable resources because they will eventually run out.

Answers

The answer is A. Solar energy is a renewable resource because it can't be used up, but oil is a nonrenewable resource because it will eventually run out.

What is genetic code?

Answers

The genetic code is the set of rules by which information encoded within genetic material (DNA or mRNA sequences) is translated into protines  by living cells

Answer: it is D

Explanation:

What process do producers use to make their own food using energy from sunlight ​

Answers

Photosynthesis is the process that producers use.
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