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balandron [24]
3 years ago
5

Whats the cellular structure of a sperm

Biology
1 answer:
rjkz [21]3 years ago
4 0
The mammalian sperm cell consists of a head, a midpiece and a tail. The head contains the nucleus with densely coiled chromatin fibres, surrounded anteriorly by an acrosome, which contains enzymes used for penetrating the female egg.

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What element differentiate the amino acids of protein from the sugar of carbohydrate
ValentinkaMS [17]

Answer:

proteins

Explanation:

carbohydrates and fats are made from three basic molecules: Carbon, hydrogen and oxygen. All proteins contain an element not found in carbohydrates and fats, nitrogen and some proteins also contain sulfur. The main unit that builds all carbohydrates is monosaccharide, or sugar while triglycerides make fats and proteins consist of amino acids.

4 0
3 years ago
Quiz which condition could lead to drawdown below the level of existing wells?
irinina [24]

<u>Answer:</u>

Continuous pumping of water causes drawdown. The water table lowers rapidly.

<u>Explanation:</u>

  • Water table is the level below which the ground is saturated with water.
  • During rainfall the runoff water percolates into the ground through the gap in the soil particles and the water table is recharged.
  • But when gallons of water are pumped continuously it leads to a drastic reduction in the water table because, water from the surrounding aquifers move towards the place where the vacuum is created by pumping.
  • To prevent this, the groundwater should be recharged and over drawing should be avoided.
5 0
3 years ago
In a diploid individual, one chromosome carries A and B genes, and the homologous chromosome carries different forms (alleles) o
Helen [10]

Answer:

D

Explanation:

This involves a dihybrid inheritance I.e. two genes are being passed on. During meiosis, specifically, the Prophase stage, homologous chromosomes (similar but non-identical chromosomes received from each parent) line side by side. According to the question, one chromosome contains A and B alleles and its homologue, received by the other parent carries a and b alleles. This means that the diploid individual has a genotype AaBb for that gene.

According to Mendel's law of independent assortment, the alleles separate independently of one another into gametes. I.e. allele A and a separates into the gametes without affecting alleles B and b of the other gene.

Crossing-over, which is the exchange of chromosomal segment occurs between the two homologues. Hence, the exchange of chromosomal segments containing alleles in the individual will possibly produce four gametes with the genotypes: AB, Ab, aB, ab.

4 0
4 years ago
Why don't the spontaneous deleterious mutations that occur in an individual
Neko [114]

Answer:

Please see below  

Explanation:

The reason behind this is the phenomenon of natural selection. The deleterious mutations do not provide a survival advantage so they are selected against, which results in these type of mutations to not be passed on - rather, they eventually get eliminated from the population.  

           

6 0
3 years ago
When the temperature on Earth drops abruptly, the land cools down faster than the sea.
alex41 [277]

Answer: density

Explanation:

Water's high heat capacity is a property caused by hydrogen bonding among water molecules.

8 0
3 years ago
Read 2 more answers
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