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asambeis [7]
3 years ago
13

What has led scientists to believe that echinoderms are more closely related to humans and other vertebrates than to cnidarians?

Biology
1 answer:
hram777 [196]3 years ago
7 0
Research study show that sea urchins displayed similarity with humans like having an immune system and genetic material (DNA). Both belong to the deuterostomes. These animals are similar based on their early stage of development specifically during the embryos form.
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A recent study reported by de meyer and others revealed that _____, which is a protein fragment that forms plaques in the brain,
FinnZ [79.3K]
The answer is amyloid beta. They clump together and form plaques. The formed plaque can block signals transmitted from one cell to another cell. In addition, the plaque can cause swelling, especially in the area where it is formed. It can also digest the disabled cells. This type of plaque is very common among patients with Alzheimer's Disease.




5 0
4 years ago
"which list contains only vitamins that do not function as coenzymes in energy metabolism?"
galben [10]
The right answer is: vitamin C and choline
Choline (vitamin B4) is the precursor on the one hand acetylcholine (important neurotransmitter and neuromodulator) and on the other hand, the cascade initiated by betaine (intermediate in the biological methylation and precursor of membrane lipids). In this, it is considered, by extension, as an integral part of the family of B vitamins,
Vitamin C protects against cellular aging, is essential for the immune defenses and increases the assimilation of iron of plant origin. It also contributes to the formation of collagen. Its deficiency leads to a disease called scurvy (hence the ascorbic acid name of vitamin C).
7 0
3 years ago
2. Most mutations are "silent." What does this mean?​
Zielflug [23.3K]

Explanation:

Silent mutations occur when the change of a single DNA nucleotide within a protein-coding portion of a gene does not affect the sequence of amino acids that make up the gene's protein.

8 0
3 years ago
Explain how and when the rule of multiplication and the rule of addition can be used to determine the probability of an event. E
AysviL [449]

Answer:

Addition used for 'either or' events , Multiplication used for 'and' events

Explanation:

Addition is used when Probability is of 'one event <u>or</u> other event'

Multiplication is used when Probability is of 'one event & other event'

Ex : Probability of A winning = 0.4

Probability of B winning = 0.3

Probability (A or B winning) = 0.4 + 0.3 = 0.7

Probability (A & B winning) = 0.4 x 0.3 = 0.12

5 0
4 years ago
Which statements describe sedimentary rock? Check all that apply
love history [14]

Answer:

all of them

Explanation:

i got u bro this corona stuff sucks

3 1
4 years ago
Read 2 more answers
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