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Ludmilka [50]
3 years ago
15

Why do a male's body contain more blood than females?

Biology
1 answer:
lubasha [3.4K]3 years ago
6 0
This is because they lost nearly 30 to 50 ml of blood every month during menstruation and some even 80 ml.
And also the metabolism of females is lower than males due to low rbc count in hormones.
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Read each of the sentences that describe a phase of meiosis. Place each sentence into the correct box.
Allushta [10]

Answer:

prophase 1(Homologous chromosomes pair to form a tetrad.

prophase 1(Crossing-over may occur between the non-sister chromatids).

Metaphase 1 (Homologous chromosomes line up at the center of the cell.)

Anaphase 1 (Homologous pairs separate and move towards opposite ends of the cell)

Telophase 1 (A nuclear membrane forms and cytokinesis follows).

Metaphase 2 ( The haploid number of duplicated chromosomes line up at the metaphase plate.

Anaphase 2 (Sister chromatids separate and become daughter chromosomes that move to the poles)

Meiosis 2: Four haploid daughter cells are formed that are not genetically identical.

Explanation:

Meiosis is a type of cell division that gives rise to gametes ( offsprings). This type of cell division occurs only in the reproductive organs. A diploid cell has two sets of chromosomes: one from the female parent and the other one from the male parent. When the diploid cell undergoes meiosis, the chromosome replicate once and the nucleus and cell duplicate twice giving rise to four haploid gamete cells.

The phases of meiosis occurs in two step divisions. Homologous pairs separate during the first round cell division which occurs in MEIOSIS 1 while the sister chromatids separate in the second nuclear division called MEIOSIS 2.

In each round of division, cells go through four stages: PROPHASE, METAPHASE, ANAPHASE, and TELOPHASE. The specific events that occur in these stages are already listed in the above answer.

Generally, at the start of meiosis, each member of a homologous pair of chromosomes, which are made up of two chromatids, moves to lie side by side. While they are thus paired, genetic material is exchanged between the chromatids. This is known as CROSSING OVER.

When the nucleus divides for the first time, the chromosomes in a given pair( not the chromatids) separate and move to opposite ends of the cell. This results in only half the number of chromosomes going to each daughter cell.

During the second nuclear division, the chromatids separate and move to opposite ends of each daughter cell giving rise to four gamete cells, each with a haploid number of chromosomes.

7 0
3 years ago
Read 2 more answers
Which of the following pathways does NOT directly deliver materials to lysosomes? A. Exocytosis B. Phagocytosis C. Autophagy D.
Lelu [443]

Answer: Option A) Exocytosis

Explanation:

Unlike the other pathways mentioned, exocytosis involves the outward movement of outside the cells. This is vital in the removal of waste products generated within the cell.

Thus, exocytosis is the answer because it expels materials out of the cell, rather than deliver materials to lysosomes

4 0
3 years ago
How much do pupils dilate when you are attracted to or in love with someone?
sveta [45]
<span>he eyes and love are connected. ... The darkened environment also allows our pupils to dilate which can be a subconscious signal of stimulation, attraction and readiness for love. Studies have shown that our pupils dilate wider than normal when we are excited about something and even someone.</span>
5 0
3 years ago
How many different blood types are there?
oee [108]
Their is AB, O, B, and A. Which is four. If your were to include whether the blood type was a Negative blood type and positive blood type they're would be . AB+, O+, B+, A+, AB-, O-, B-, A-. Which is eight.
3 0
3 years ago
Chloroplasts and mitochondria are both involved in energy conversion in cells. Select the other similarity they share. Question
Afina-wow [57]

Chloroplasts and mitochondria are similar in the sense that they both contain DNA.

MITOCHONDRIA AND CHLOROPLAST:

  • Mitochondria is a membrane bound organelle found in eukaryotic cells. Mitochondria is the energy production site of cells because it is where cellular respiration takes place.

  • Chloroplast is another membrane-bound organelle in eukaryotic cells. They are the site of photosynthesis in plants.

  • Mitochondria and chloroplast are both involved in energy conversion in cells because electron transport chain occurs in both organelles.

  • However, another similarity between these two organelles is that they contain extra-chromosomal DNA.

Learn more about organelles: brainly.com/question/21759042?referrer=searchResults

3 0
2 years ago
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