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Grace [21]
3 years ago
10

Which cell process occurs only in organisms that reproduce sexually

Biology
1 answer:
Levart [38]3 years ago
7 0

Answer:

MEIOSIS is that cell process that only occurs in organisms that reproduce sexually.

Explanation:

Eukaryotic organisms are the type of organisms that have have  nucleus and other membrane bound organelles. In complex eukaryotic organisms, sexual reproduction takes place. Through the process of meiosis, the production of gamete or reproductive cells i.e the sperm or egg takes place.

Meiosis produces four daughter cell from a single parent cell. each of the daughter cell is haploid. haploid means containing half the number of the chromosomes as the original parent cell.

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List and describe the most important erosional and depositional features of a river and how these features form.
Mkey [24]

Answer:

Meanders

As the river makes its way to the middle course, it gains more water and therefore more energy, so material can be carried in suspension and is used to erode the river banks. Lateral erosion starts to widen the river. When a river flows over flatter land it develops large bends called meanders.

As a river goes around a bend, most of the water is pushed towards the outside. This causes increased speed due to less friction and therefore increased erosion (through hydraulic action and abrasion).

The lateral erosion on the outside bend causes undercutting of the river bank to form a river cliff.

There is less water on the inside bend of a meander so friction causes the water to slow down, lose energy and deposit the material the river is carrying, creating a gentle slope.

The build-up of deposited sediment is known as a slip-off slope (or sometimes river beach).

The fast current on the outside bank causes lateral erosion, creating a river cliff. The slow current on the inside bank causes deposition, creaitng a slip-off slope.

Oxbow lakes

Due to erosion on the outside of a bend and deposition on the inside, the shape of a meander will change over a period of time. Erosion narrows the neck of the land within the meander and as the process continues, the meanders move closer together. When there is a very high discharge (usually during a flood), the river cuts across the neck, taking a new, straighter and shorter route. Deposition will occur to cut off the original meander, leaving a horseshoe-shaped oxbow lake.

Erosion makes the neck narrow. During floods, the river takes the shortest course through the neck. The river has a new straighter course and the abandoned meander is called an oxbow lake.

Explanation:

3 0
2 years ago
Match the gastric phase on the left (1-3) with the correct description on the right (4-6):
dem82 [27]

Answer:

1 and 5,

2 and 6,

3 and 4

Explanation:

Intestinal phase: stomach empties and decreases secretions

The intestinal phase is the phase where stomach empties its contents(chyme) and decreases secretion. In this stage the duodenum responds to arriving chyme and moderates gastric activity through hormones and nervous reflexes.

The Chyme is the semi-fluid mass of partly digested food that is expelled by the stomach, through the pyloric valve, into the duodenum.

Gastric phase: stomach secretes juice and mixes food into chyme

The gastric phase is a period in which swallowed food and semi-digested protein ( peptides and amino acids ) activate gastric activity  which secretes juice and mixes food into chyme. About two-thirds of gastric secretion occurs during this phase.

Cephalic phase: prepares stomach for arrival of food

The cephalic phase of digestion is the gastric secretion that occurs prior to when food enters the oral cavity. Cephalic phase result from the ignition of  visual, olfactory, and auditory inputs to the brain and also induce anticipatory responses i.e  prepare the gastrointestinal tract for the meal.

4 0
3 years ago
If flying squirrels were brought to Australia, what would their relationship be with sugar gliders
krek1111 [17]
No.. & what is sugar gliders?
8 0
3 years ago
The point below ground from which an earthquake's energy is released is called the focus. An earthquake's epicenter is located
Crazy boy [7]
<span>The correct option is C. On Earth's surface directly above the earthquake's focus.
</span>
<span>The hypocenter, or focus is the point where the earthquake really starts. It's located under the surface in the tectonic plate boundary.  </span><span> <span> <span> </span> </span> </span>
The epicenter is the point on the surface of the earth that's directly above the hypocenter.
3 0
2 years ago
Read 2 more answers
Cell division by meiosis occurs in
BabaBlast [244]

germ cells

it occours in the germ cells

3 0
1 year ago
Read 2 more answers
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