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3 years ago

What is carrying capacity?

1 answer:

7 0

1. Air quality – The higher the population in a city the higher the chances of reduced air quality due to increase per capita emissions.

2. Water usage – The higher the population density in a city, the harder it is to supply adequate clean water to everybody and the water quality may begin to drop

3. Waste management- Pollution begins to become a problem when the population in a city goes beyond its carrying capacity.

4. Land use – Urban sprawl becomes a problem when a high proportion of the city’s population is squeezed in a small portions of land

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How you think reproduction differs among these four animals.

KIM [24]

Answer:

Explanation:

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3 years ago

How can nuclei accommodateall of our genetic material<br> (3,000,000,000 base pairs)?

mr_godi [17]

Answer:

By forming chromatin and in the condensed form of chromosomes

Explanation:

The human genome contains around 3 billion base pairs which are located in the nucleus of all cells. In order to accomodate such large genomic information, DNA is maximally supercoiled during mitosis and meiosis processes to form condensed structures called chromosomes. Humans have 23 pairs of chromosomes per somatic cell. The supercoiling process is assisted by a family of proteins called histones, which interact with DNA and regulate its conformation. The complex between DNA and histones within the nucleus is called chromatin. When chromatin is supercoiled it form chromosomes (in eukaryotic cells).

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4 years ago

Why do some birds have bright colors whole others look more camouflaged?

Nuetrik [128]

Evolution, allowed birds to survive in various climates

4 0

3 years ago

Explain how a change in thermal energy causes matter to change from one state to another. Give two examples

Bingel [31]

Thermal energy causes matter to change state beacuse evrything has heat which is thermal energy hore heat is more thermal energy.
Ex.Ice changes into water
Ex.Water changes into water vapor

6 0

3 years ago

Drag and drop the terms at the left to match the appropriate descriptions at the right. ResetHelp Composed of phospholipid bilay

quester [9]

Answer: The appropriate description is matched against the components of the cell below.

1) Cilia: Short, hairlike cellular extensions

2) Ribosome: Site for protein synthesis

3) Chromatid: Copy of a chromosome

4) Cristae: Folds of the inner mitochondrial membrane

5) Lysosomes: Vesicles with powerful digestive enzymes.

6) Smooth ER: Stores calcium ions in muscle cells

7) Plasma membrane: Composed of phospholipid bilayer

8) Cytosol: Intracellular fluid

9) Cytoplasm: Intracellular fluid and organelles

10) Centriole: Involved in mitosis.

Explanation:

A cell is simply defined as the structural and functional unit of an organism. It is made up of highly organized physical structures called intracellular organelles. These organelles includes:

• Ribosome

• Lysosomes

• Smooth Endoplasmic reticulum

• Plasma membrane

A type of cellular motion called ciliary movement, is a whip-like movement of CILIA on the surface of cells takes place in the respiratory airways of human.

The cytoplasm is filled with both intracellular fluid and organelles while the cytosol contains mainly dissolved proteins, electrolyte and glucose ( intracellular fluid).

7 0

3 years ago