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Mkey [24]
2 years ago
9

Which organelles are called endosymbionts and why

Biology
1 answer:
Ganezh [65]2 years ago
6 0
Two major types of organelle in eukaryotic cells, mitochondriaand plastids such aschloroplasts, originated as bacterial endosymbionts.
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4.Antagonistic muscles are muscles that have opposite effects to one another,As one relaxes, the other contracts.

5, This is to move bones in tandem to cause locomotion.As as one contracts, and the other relaxes, the bone is pulled and this shifts the position of the bone to cause locomotion.Note, a muscle cell usually pull in one direction.,

6. it lacks nucleus to have enough space for oxygen carrying molecules(haemoglobin)it has bi-concave shape to squeeze through tinny capillaries to reach tissues and have large surface area for oxygen carriage.They contain Oxygen carrying pigment Haemoglobin.

1.This is a stimulant that increases the rate of excitability by increasing the synaptic connection through increase in amount neurotransmitters, at synaptic junctions

2,This accelerate the rate of ageing.Leading to premature aging.it ,may affect the heart efficiency and the entire cardiovascular system at the long run.

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7. A state of matter can only be compressed at  the gaseous state.it can not be compressed at solid because the inter molecular forces are very strong and the molecules of solids are well compact. Molecules of liquids are not free neither, although their molecular force are weak, But the molecules can not be compressed, since they lack random motion.

8. This is due to the lattice arrangement of water molecules in ice, resulting in lesser density of ice compare to that of water. The lower density of ice makes ice to float when it freezes, however, it is the higher lattice arrangement in ice which makes it expand, compare to other liquids which makes it less dense and therefore floats.

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5 0
2 years ago
The glenoid cavity is where the Select one: a. clavicle articulates with the scapula. b. clavicle articulates with the sternum.
kati45 [8]

Answer:

The glenoid cavity is where the d. humerus articulates with the scapula.

Explanation:

The scapula is the bone that contains the glenoid cavity. The glenoid cavity is a part of the shoulder. This cavity forms the glenohumeral joint along with the humerus. The Humerus is a long bone of the upper arm, and the scapula articulates with this bone to form a ball and socket joint at the shoulder. These are all bones forming the shoulder girdle and upper extremities.

4 0
3 years ago
Which has the most control of traits and inherent
Oksanka [162]

Answer:

Nucleic acids have the most control of traits and inheritance.

4 0
3 years ago
Producing atp without oxygen in minimal amounts<br> is what?<br> helpppp plzzzzzzz
jarptica [38.1K]

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6 0
2 years ago
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An individual with the genotype AaBb produces four different gametes in equal proportions. This is a demonstration of:_____.a. t
juin [17]

Answer: b. Mendel's law of independent assortment.

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