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atroni [7]
3 years ago
5

What is used to move fluid across the cell’s surface, or move the cell itself if it does not have flagella. A. Cilia B. Sodium-p

otassium pump C. Microtubules D. Flagella
Biology
1 answer:
sertanlavr [38]3 years ago
7 0

Answer:

A. cilia

Explanation:

like flagella but smaller and around

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ITS REALLY IMPORTANT, PLZZ BE CORRECT. THANKS!
Alex787 [66]

Answer:

B

Explanation:

8 0
3 years ago
What is the ozonosphere
riadik2000 [5.3K]
The ozonosphere is another term for the ozone layer, which is within the Earth's stratosphere. The ozone layer is responsible for absorbing most of the sun's ultraviolet (UV) radiation, thanks to its high concentration of ozone that is exclusive to this layer.
3 0
3 years ago
Read 2 more answers
Why would it be advantageous to have more or fewer bones in the pectoral girdle?
True [87]

<u>Answer:</u>

<em>It is advantageous to have  lesser number of bones in the pectoral girdle.</em>

<u>Explanation:</u>

Pectoral girdle is made up by the bones that connect the upper limbs to the appendicular skeleton  which includes all the limb bones. Pectoral girdle in humans is made up of two bones. They are clavicle (collar bone) and scapula. The pectoral girdle allows the free movement of upper limbs.

The bones of pectoral girdle are not as massive as the bones of pelvic girdle since it doesn’t have the function of support. Lesser number of bones in pectoral girdle makes  movement of upper limbs more free.

6 0
3 years ago
Assume that a cross is made between AaBb and aabb plants and that the offspring occur in the following numbers: 106 AaBb, 48 Aab
Elenna [48]

Answer:

linkage with approximately 33 map units between the two gene loci

Explanation:

If two genes are not linked, number of recombinants and parental offspring will be equal. Here it is clearly visible that recombinants are less than parental offspring hence the genes are linked. Given, the offspring are in following numbers:

AaBb = 106 = Parental

aabb = 94 = Parental

Aabb = 48 = Recombinant

aaBb = 52 = Recombinant

Recombination frequency = (Number of recombinants/ Total progeny) * 100 = (100/300) * 100 = 33.33 %

1% recombination frequency= 1 map unit of distance between the two gene loci. So here the distance between the two gene loci is approximately 33 map units.

Hence, these results are consistent with linkage with approximately 33 map units between the two gene loci

3 0
3 years ago
Why is 2 the correct answer to number 16 ? Explain why please and answer this !!
marta [7]

an egg cell has a haploid nucleus so it has half the number of dna because it fuses with a sperm cell to have the full amount of dna.

an egg cell has 23 chromosomes and a sperm cell has 23 chromosomes.

they both have half the amount of dna to form a zygote

5 0
3 years ago
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