Disease-causing agents, called ________, are found throughout the world.

1 answer:

4 0

Disease-causing agents are called pathogens. It is the broadest term that can be used which refers to any bacterium, viruses or any microorganism that causes disease. It is also known as infectious agent. It can also be defined as an agent that disrupts the normal function of a multicellular animal or plant.

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What biomes receive less then 100 Cm of rain each year? Check all that apply

jeyben [28]

Answer:- Option 3 (desert), Option 4 (tundra) and Option 5 (grassland).

Explanation:-

The amount of rainfall varies in different biomes:-

1. Tropical rain forests - The annual rainfall in these forests falls in the range of 125 to 660 cm which varies according to the seasons.

2. Temperate rain forest - The annual rainfall in these forests can range from 200 cm to 350 cm depending on the region where they are found. The annual rainfall is higher in warmer regions .

3. Desert - As the name suggests, the desert areas do not get enough rainfall. The annual rainfall in a desert is less than 25 cm.

4. Tundra - It is a biome which is found in relatively cooler climates and the amount of rainfall is very less these regions. The annual rainfall in tundra biomes is less than 20 cm.

5. Grassland - in these biomes, the rainfall is higher than the tundra and desert but is not as high as the rain forests and thus, grass is the dominant vegetation. The annual rainfall ranges from 60-90 cm.

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3 years ago

Does increasing pressure, decrease or increase water potential?

LUCKY_DIMON [66]

Answer:

the addition of solutes lowers the potential, while an increase in pressure increases the potential.

Explanation:

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3 years ago

During replication, nucleotide bases are added to DNA strands in a ___ direction(s).

Alborosie

Nucleotide bases are added to DNA strands in a 5' to 3' direction.

What is DNA replication?

When a cell divides, DNA copies itself through a process called replication.

Generally speaking, DNA replication involves uncoiling the helix, strand separation by rupturing the hydrogen bonds between the complementary strands, and synthesis of two new strands through complimentary base pairing.
The origin of replication, which is a precise location in the DNA, is where replication starts.
From the point of origin, DNA replication is bidirectional.
The two parent DNA strands unwind and split apart at the origin of replication to generate two "Y-shaped" replication forks in order to start DNA replication.
These unwinding enzymes are known as DNA helicases.
The real location of DNA copying is at these replication forks.
Proteins that destabilize helices bind to the single-stranded areas to prevent the two strands from rejoining.
To reduce stress on the helical molecule during replication, enzymes known as topoisomerases cause breaks in the DNA and then reunite them.
The hydrogen bonding of free DNA nucleotides with those on each parent strand results in the formation of new complementary strands as the strands continue to unwind and split in both directions around the entire DNA molecule.
The new nucleotides are joined by DNA polymerases using phosphodiester bonds as they align themselves opposite each parent strand using hydrogen bonds.
Deoxynucleotide triphosphates, which are made up of a nitrogenous base called deoxyribose and three phosphates, are the actual nucleotides that are aligning through complementary base pairing.
Two of the phosphates are withdrawn to provide energy for bonding as the phosphodiester bond forms between the 3' OH of the previous nucleotide in the DNA strand and the 5' phosphate group of the next nucleotide.
In the end, two identical DNA molecules are created when each parent strand acts as a template for the synthesis of a complementary copy of itself.

Hence, nucleotide bases are added to DNA strands in a 5' to 3' direction.

To learn more about DNA replication click on the link

brainly.com/question/21265857

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3 0

1 year ago

Water molecules are polar with the oxygen side being

dezoksy [38]

Water molecules are polar with the oxygen side being, slightly negative and the hydrogen side being slightly positive.

4 0

3 years ago

Patches of fibrocartilage formed in the healing of a fracture are called __________, whereas the bony collar formed around the f

SashulF [63]

Answer:

Patches of fibrocartilage formed in the healing of a fracture are called soft callus, whereas the bony collar formed around the fracture is called hard callus.

Explanation:

In the fibrocartilage or soft bone callus phase, the necrotic bone is removed by osteoclastia and dead soft tissues are being removed by macrophages. The fibroblasts are activated and a granulation tissue is generated that supposes the appearance of new vessels and, with them, the arrival of more connective tissue cells. A tissue called fibrous callus or fibrocartilage begins to form, composed of a poorly structured amalgam of fibrous tissue, cartilage, and amorphous bone.In hard callus, bone and later cartilage are deposited in the growing historical mass. The two collars of callus, fixed to the bone at some distance from the fracture, they grow upwards and towards each other, forming an arc on focus.

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3 years ago