What are the genetics chromosomes for male and female? Female Male XY XX

1. In eukaryotic flagella, the fibers that slide past one another due to the activity of dynein proteins are microtubules. 2. Ma

yulyashka [42]

Answer:

1) In eukaryotic flagella, the fibers that slide past one another due to the activity of dynein proteins are microtubules.

2) Many cell organelles, most notably the nucleus, are anchored by intermediate filaments which are assembled from a diverse class of proteins.

3) Centrosomes are sites where protein dimers assemble into microtubules.

4) The extension of pseudopodia in amoeba is due to the regulated assembly and destruction of microfilaments.

5) The only cytoskeletal fibers not associated with intracellular movement or whole cell locomotion are the intermediate filaments.

6) During muscle contractions, myosin motor proteins move across tracks of microfilaments.

Explanation:

The cytoskeleton is a very important element of the cell, and is composed of three different structures: microtubules, intermediate filaments, and microfilaments.

Microtubules are structures in the shape of hollow tubes that give shape to the cell. Microtubules also participate in cell motility by providing a route for the organelles to move through.

Intermediate filaments are the only ones that do not participate in cell motility: their main function is to provide mechanical support for the plasma membrane.

Microfilaments are a key component in cell motility, and also associate with myosin (a protein) to produce muscle contraction. Microfilaments also give the cell the ability to grow pseudopods.

4 0

3 years ago

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Some geologists hypothesize that the mass extinction of dinosaurs was caused by a large meteorite impact. These geologists think

ANTONII [103]

The meteorite was probably 10 to 15 km (6.2 to 9.3 mi) wide and affected the entire planet through a proces called "impact winter". As the name suggests, an impact winter is a period of low temperature produced by a huge cloud of ash and dust that blocks sunlight. Since sunlight is essential for plants to survive, if the sun rays are blocked by this cloud, all animals that depend on those plants (including dinosaurs) will die. The meteorite could have created such a cloud upon hitting the earth.

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3 years ago

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Meiosis differs from mitosis in the __________.

Lesechka [4]

Meiosis produces haploid gametes, where as mitosis produces somatic cells. meiosis involves two divisions, mitosis involves only one division. mitosis produces genetically identical daughter cells, meiosis produces genetically unique daughter cells.

hope this helped, God bless!

7 0

3 years ago

Explain how the water cycle works and describe how changes to the water cycle can impact the production of hydropower brainliest

maw [93]

Answer:

There are four main stages in the water cycle. They are evaporation, condensation, precipitation and collection. Let's look at each of these stages. Evaporation: This is when warmth from the sun causes water from oceans, lakes, streams, ice and soils to rise into the air and turn into water vapour (gas).

Explanation:

5 0

2 years ago

If the DNA content of a diploid cell in prophase I is x, what would it be for the same cell at prophase II?

pentagon [3]

A is the correct answer. Diploid cells all contain two sets of chromosomes. Prophase 1 occurs during the first phase of meiosis, a type of cell division, and prophase 2 is the same process, but this time occurring without chromosome reduplication. As a result, there is the original and duplicated cells, which makes two.

8 0

3 years ago