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SVETLANKA909090 [29]
3 years ago
11

As a final exam question in your biology course, you are asked to identify an animal that you immediately recognize as a chordat

e. Your instructor applauds you for your quick recognition of the phylum, but then he asks you to be more specific. You reply that the animal that you are observing is a craniate. To get an A, you must also tell your instructor how you came up with your answer. What features would you use to formulate your answer?
A) Most craniates lack a functional jaw.
B) The anterior end of the nerve cord is elaborated to form a brain in craniates.
C) The brain is encased in a protective bony or cartilaginous housing in craniates.
D) Adult craniates lose most of their chordate characteristics.
E) A group of embryonic cells called the neural crest form on either side of the neural tube in craniates.
Biology
2 answers:
julia-pushkina [17]3 years ago
8 0

Answer: c) and b) are correct.

The brain is encased in a protective bony or cartilaginous housing in craniates.

The anterior end of the nerve cord is elaborated to form a brain in craniates.

Explanation: The craniates include the chordata with well-defined heads. This includes mammals, reptiles and fishes. So we can discard the other answers. Because most craniates have functional jaws, and the adults do not lose their chordate characteristics. The last one does not apply as a specific feature because the tunicate have neural crest but are not recognized as craniata.

Kay [80]3 years ago
7 0

Answer:

BCE

The anterior end of the nerve cord is elaborated to form a brain in craniates.

The brain is encased in a protective bony or cartilaginous housing in craniates.

A group of embryonic cells called the neural crest form on either side of the neural tube in craniates

Craniates are members of the craniate monophyletic group of chordinates. <u>They have   a distinct head , protected by the skull made of hard bone. Some are with cartilages.</u> The skull protects the brain, paired eyes, ears and other the sensory organs.

They have high metabolic demands, their cardiovascular systems is made up of heart with one to two chambers. Its pumps blood saturated with oxygen, carried by hemoglobin. They have kidney which maintain homeostasis

Explanation:

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n200080 [17]

Answer:

Structurally, proteins are different from carbohydrates because all proteins contain nitrogen (option C).

Explanation:

The basis of the chemical composition of proteins is carbon, hydrogen, oxygen and nitrogen, so all proteins have nitrogen in their structure. Some proteins also possess phosphorus and sulfur atoms, among others.

Proteins are biomolecules formed by the union of multiple amino acids through carboxyl-amino bonds, called petidic bonds. Their content of nitrogen and other atoms in their structure is what makes them different from carbohydrates.

The other options are not possible because:

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  • <u><em>Potassium and helium</em></u><em> are not part of the protein structure. </em>

5 0
3 years ago
What tool can we use to predict the outcome of a genetic cross?
kirill115 [55]
Answer: Punnett Square

-----

A punnett square is used to display the possible outcomes of a genetic cross. The parents' alleles are written across the top and the side, and the possible genotypes are written in the boxes (see image).

4 0
3 years ago
Which part of my brain is probably damaged if I am unable to recognize basic objects arond my house?
Ket [755]

Answer:

The correct answer is - the hippocampus.

Explanation:

Hippocampus is the part of the brain located deep in the temporal lobe that is related to memory and learning abilities. The hippocampus is present in humans and other mammals, two in numbers.

Injuries to the hippocampus will be lead to problems that are associated with a memory like recognition and identifying people or things or the ability to learn things. Direction, locations type of memories would be affected if damaged.

8 0
2 years ago
2. Which macromolecules were present in your saliva and food choices? Explain why you think you got the results you did.
JulijaS [17]
Starch is present in saliva. 

I don't know which food choice you made so I can't explain why you got the results you did.
4 0
3 years ago
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photoshop1234 [79]

Answer:

Most fossils are found in sedimentary rocks, those rocks produced by the accumulation of sediment such as sand or mud. Wind and other weathering conditions wash away sediment on land, depositing it in bodies of water. For this reason, fossils of sea creatures are more common than those of land creatures.

Explanation:

6 0
3 years ago
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