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Lyrx [107]
3 years ago
15

What type of symmetry do sponges have? A. Radial B. Bilateral C. None

Biology
1 answer:
lubasha [3.4K]3 years ago
5 0

C is the correct answer they are asymmetrical.

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A plasmid 41 twists and 6 right handed writhes. What is the Lk for this plasmid?
OLEGan [10]

Answer: Lk for this plasmid = 47

Explanation:

The formula to compute Lk is given by :-

Topological Linking Number (Lk): Twist (Tw) + Writhe (Wr)

Given: A plasmid 41 twists and 6 right handed writhes.

i.e. Twist (Tw) = 41   , Writhe (Wr) = 6

Then, Topological Linking Number (Lk) for this plasmid :  = 41+6

= 47

Hence, the Lk for this plasmid = 47

3 0
3 years ago
What physical change occurs quite frequently in middle-aged men?
Oliga [24]

Answer: A) Balding

Explanation:

Balding is the most common pshysical change in middle-aged men.

Generally speaking, men between 35 and 40 years old develop a state of baldness that although it is not aggravated, it is notorious. Some men even begin to lose their hair at an earlier age, approximately 25 years old and older, although in those cases it is very likely that the cause is a genetic tendency.

Normally, after a certain age range (stated above) the hair fiber begins to lose strength and said follicles simply do not allow hair growth so fast as they did when the individual was younger.

6 0
3 years ago
Read 2 more answers
How many electrons are transferred in the ionic bond between sodium and chlorine in NaCl
Tpy6a [65]

One electron is transferred in the ionic bond because sodium needs to lose one electron and chlorine needs to gain one electron to have a full energy shell, which is the ultimate goal in any bond.

Brainliest please :)

4 0
3 years ago
Describe the passage of a meal containing bread through your digestive system
Alex777 [14]

Before your food passes from the mouth and down your esophagus, salivary amylase, an enzyme in saliva, begins to digest the starch in your bread. That is the start of chemical digestion. ... The passage of the bolus through the esophagus to the stomach occurs by peristalsis, a series of wave-like muscle contractions.

7 0
3 years ago
Someone pls help me!
dexar [7]

Answer:

Cell membranes are semi-permeable, which works like a sieve that determines what enters and leaves the cells.

Explanation:

It is semi-permeable and it allows molecules to diffuse inside.

<em>Feel free to mark it as brainliest :P</em>

4 0
2 years ago
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