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Wittaler [7]
3 years ago
7

Which of the following is true about contact forces?

Biology
1 answer:
NARA [144]3 years ago
6 0

Contact forces require the physical contact between objects.

Explanation:

Force is an interaction which can cause a body to move, can bring a moving body to rest. change the shape of an object or change the direction of motion of an object.

Forces that can act between objects which are not in true physical contact are called non-contact forces. Example- Gravitational force, Magnetic force etc.

Forces that act only when the interacting objects are in true physical contact are called contact forces. Example- Frictional force.

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New cells come from old cells through cells
zimovet [89]

Answer:

New cells are created from a process called cell division. The new cells are produced when a cell, called the mother cell, divides into new cells called daughter cells. When two daughter cells have the same number of chromosomes as the original cell, the process is called mitosis.

6 0
3 years ago
C4 plants occur more commonly in desert conditions because _____.
hjlf

Answer:

The correct answer is option E.

Explanation:

C4 plants are the plants that utilize the Hatch-Slack pathway or C4 carbon fixation type of photosynthesis process in which carbon dioxide into 4 carbon sugar to move to the Calvin cycle.

These plants are present more commonly in dry and hot climates such as deserts due to their ability to the fixed carbon at a low concentration of carbon dioxide and produce more energy when stomata are closed. Corn, pineapple sugarcane and many more are examples of the C4 plants.

Thus, the correct answer is option - E.

8 0
3 years ago
After telophase I of meiosis, the chromosomal makeup of each daughter cell is a. tetraploid, and the chromosomes are each compos
murzikaleks [220]

Answer:

The correct answer will be option-B.

Explanation:

Meiosis is a type of cell division which proceeds in two stages: meiosis I and meiosis II and result in the formation of four daughter cells.

The meiosis I is known as the reductional division as two daughter cells are formed with reduced ploidy level that is haploid cells from diploid cells.  The cells formed contains chromosomes with two chromatids as the DNA amount gets doubled after the DNA synthesis.

Thus, Option-B is the correct answer.

3 0
3 years ago
How do different restrictive enzymes produce different DNA fragments from the same DNA molecule?
iogann1982 [59]

Answer:

Each restriction enzyme cuts DNA at a different restriction site

Explanation:

7 0
2 years ago
why is DNA a good molecule (compared to liquid or carbohydrate) to have the instructions for protein synthesis?
alex41 [277]
A DNA or good molecule needs protein synthesis because without it it would not be able to function properly!
4 0
2 years ago
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