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raketka [301]
3 years ago
5

*HELP*

Biology
1 answer:
Alekssandra [29.7K]3 years ago
3 0

Answer: A prokaryotic cell is a simple, single-celled (unicellular) organism that lacks a nucleus, or any other membrane-bound organelle. We will shortly come to see that this is significantly different in eukaryotes. Prokaryotic DNA is found in the central part of the cell: a darkened region called the nucleoid Unlike Archaea and eukaryotes, bacteria have a cell wall made of peptidoglycan, comprised of sugars and amino acids, and many have a polysaccharide capsule (Figure 1).

Explanation:

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PLEASE HELP! WILL GIVE BRAINLIEST AND POINTS!
natulia [17]

Answer:

A. Lancelet

B. All chordates

Explanation:

A. Dorsal nerve chord is the only <u>unique feature</u> among all members of <u>phylum chordata</u> (mainly found in subphylum Vertebrata). In the given list, only lacelet is the Chordate whereas <u>snail belongs to phylum Mollusca</u>, <u>grasshopper belongs to Arthropda</u>, and <u>jellyfish belongs to Cnidaria</u>. Dorsal nerve cord runs along the length of organism's body.

B. <u>Gill slits</u> are <u>opening structures</u> to gills through which water passes from pharynx/throat to exterior. Their main purpose is to help filter the food particles available in surrounding water. Although they are typical for amphibians and fishes, chordates also possess gill slits at embryonic stages.

7 0
3 years ago
Human and sperm whale myoglobin have very similar primary structures. Which of the following statements are correct? a. The two
Mandarinka [93]

Question is incomplete ,complete question is as follows :

Human and sperm whale myoglobin have very similar primary structures. Which of the following statements are correct?

1) The two proteins are very likely related evolutionarily.

2) The differences in the sequences in many instances represent a conservative change (such L for I).

3) The differences in the sequences in many instances represent a nonconservative change (such as D for A).

4) There is no correlation between the two proteins since they originate from very different species.

Human and sperm whale myoglobin have very similar primary structures. Which of the following statements are correct?

A) Statements 1 and 2 are correct.

B) Statements 1, 2, and 4 are correct.

C) Statements 1, 2, and 3 are correct.

D) All of the listed statements are correct.

Answer:

A) Statements 1 and 2 are correct.

Explanation:

As the Human and sperm whale myoglobin  are very likely related evolutionarily hence option a is correct.

The differences in the sequences in many instances represent a conservative change (such as L for I) hence option b is also correct.

While all the other options are not correct.

5 0
3 years ago
Which of the parents can pass the allele for hemophilia to a son? Explain.
lilavasa [31]
The father determines if its male or female. So the father is the carrier and the allele is on the Y chromosome.
6 0
3 years ago
How is neuron like and different from a blood cell
jok3333 [9.3K]

Answer:

Neurons are similar to other cells because neurons have a cell membrane, a nucleus, cytoplasm, mitochondria, organelles, and carry out processes such as energy production.

Neurons differ from other cells because neurons have extensions called axons and dendrites, they communicate with each other through an electrochemical process which we just talked about, and neurons have specialized structures such as synapses and chemicals such as neurotransmitters.

Explanation:

there you go

5 0
3 years ago
What are the similarities between cartilage and bone?<br><br> (It is a short answer question)
aleksley [76]

Answer: Cartilage and Bone are specialised forms of connective tissue. They are both made up of cells embedded in an extracellular matrix.

hope this helps :D

love your pfp btw :3

8 0
3 years ago
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