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Sever21 [200]
3 years ago
7

Density-dependent inhibition is explained by which of the following? As cells become more numerous, the protein kinases they pro

duce begin to compete with each other, such that the proteins produced by one cell essentially cancel those produced by its neighbor. As cells become more numerous, the cell surface proteins of one cell contact the adjoining cells and they stop dividing. As cells become more numerous, they begin to squeeze against each other, restricting their size and ability to produce control factors. As cells become more numerous, the level of waste products increases, eventually slowing down metabolism.
Biology
1 answer:
Damm [24]3 years ago
6 0

Ans.

Regulation of cell division includes various controlling processes that inhibit uncontrolled cell division, to prevent development of tumors. Density-dependent inhibition involves reduction in cell division, when a population of cells acquires certain density.  It leads to contact between cell surface proteins of adjoining cells that gives negative signals for cell division and thus, prevent cell division.

Thus, the correct answer is 'as cells become more numerous, the cell surface proteins of one cell contact the adjoining cells and they stop dividing.'

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An underwater volcano erupts. A fisherman on a boat at the surface is 10 km from the volcano. An underwater diver is also 10 km
ryzh [129]
<h2>Answer:</h2>

Option B, the diver will hear the sound first.

<h2>Explanation:</h2>

Sound need a medium to travel from one place to another, the medium where atoms are more closely packed together, the better will be speed of sound. That is why sound won’t travel in a vacuum because there are no particles to bump together to transmit the vibration.

  1. In air, the particles are generally far from each other so they travel further before they bump into one another.
  2. In water, the particles are much closer together, and they can quickly transmit vibration energy from one particle to the next. This means that the sound wave travels over four times faster than it would in air.
4 0
3 years ago
16 POINTS
katen-ka-za [31]

Answer: The correct answer is-

C.They replaced carbon dioxide with oxygen in the atmosphere.

Cyanobacteria ( also known as blue green algae) is a large phylum of bacteria that is capable of synthesizing its own food using carbon dioxide and water in the presence of sunlight ( photosynthesis).

They contain a green pigment called chlorophyll that absorbs energy from sunlight and helps in the formation of food ( glucose). They release oxygen as a byproduct in the atmosphere.

As these organisms utilize carbon dioxide ( that is present in the atmosphere) to give oxygen in return, therefore, they affected early atmosphere of Earth by replacing carbon dioxide with oxygen.

Thus, option C) is the right answer.

8 0
3 years ago
Read 2 more answers
The main difference between the four nucleotides that make up DNA is that they have differentRequired to answer. Single choice.
pickupchik [31]

Answer:

bases.

Explanation:

Nucleotides are the basic building blocks that make up DNA, consisting of a deoxyribose sugar, phosphate group, and nitrogenous base. The main difference between the four nucleotides is the nitrogenous base, Adenine, Thymine, Guanine, or Cytosine. Adenine pairs with Thymine, and Guanine pairs with Cytosine. The order in which these pairs come in code for proteins and hold genetic information.

3 0
3 years ago
One of your friends is originally from Ecuador. When he was a kid, he would sneak into the forest and watch howler monkeys. On o
Mademuasel [1]

Answer:

The foramen magnum was not located at the bottom of the skull

Explanation:

The foramen magnum is a large hole or opening found in the base of the skull  through which the spinal cord passes.

The position of the foramen magnum is important since it allows the skull to balance on the body hence essential for posture.

Humans are bipedal and Howler monkeys are quadrupedal hence the positioning of the foreman will be different.

That is how the skull found was realized it was not human

7 0
3 years ago
Which bases are found in a strand of DNA
Evgen [1.6K]
If i remember correctly they should be adenine (A), thymine (T), guanine (G) and cytosine (C). i hope this helps. sorry if they arent all correct.
7 0
3 years ago
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