Sperm cells and egg cells are____

Biology

1 answer:

saw5 [17]2 years ago

8 0

Answer:

haploid and contain 23 chromosomes

Explanation:

The term haploid can also refer to the number of chromosomes in egg or sperm cells, which are also called gametes. In humans, gametes are haploid cells that contain 23 chromosomes, each of which a one of a chromosome pair that exists in diplod cells.

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Polysaccharide structure can be varied by differences in ________.

Scilla [17]

Answer:

monomers of MONOSACCHARIDES

Explanation:

Polysaccharides are large molecules formed from chains of POLYMERS linked together by glyosidic bonds. <u>MONOMERS are small sub units that formed polymers, they are therefore the building block of a polysaccharides. The monomers of polysaccharides are called monosaccharid</u>es (1 sugar molecule.) when two of these are joined together they formed disaccharides (two sugars.)

Polysaccharides are fromed by joining together condensation, (loss of water molecules,) of mutiple monosaccharides units and the reversal of this to add water molecules to sepate them to monosaccharies is sugar Hydrolysis.

Example of polysaccharides are starch, glycogen cellulose

Example of monosaccharides are glucose, galactose.

Disaccharides are common table sugar, sucrose, maltose, lactose

7 0

3 years ago

Is this single cell or multicellular

Verdich [7]

Answer:

single celled

Explanation:

because i asked a teacher

5 0

3 years ago

What causes formation of the fertilization envelope?

Sonja [21]

Answer:

Sperm-egg interaction

Explanation:

The formation of fertilization envelope is well-studied on the model system- sea urchin. It has been shown that, the fertilization envelope is formed after the initial sperm-egg interaction from the egg surface vitelline envelope and the paracrystalline protein fraction which is derived from cortical granules. Secretion from cortical granules, prevents polyspermy.

4 0

3 years ago

Fdsci 101 what general trend do you observe relative to the masses of these species? question 3 options: all species basically h

Alexandra [31]

The third and last option is correct.

Species in the past (referring to dinosaurs) were more massive.

$\bf~CO_{2}$ levels where higher in the past, which meant that plants prospered during that time since they had a easy access to food. That contributes to the fact that herbivores could grow bigger because there was more food. Which in turn, increases the size of early carnivores which eat bigger herbivores.