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2 years ago

True or false: Meiosis is a method of reproduction for some single-celled organisms

Biology

2 answers:

Rainbow [258]2 years ago

5 0

Answer: false

Explanation: Meiosis:

Meiosis is a special kind of cell division that occurs in germ cells in order to produce gametes

dexar [7]2 years ago

4 0

Answer: Some bacteria that do NOT have a nucleus and cannot undergo MITOSIS use which reproductive method. binary fission.

Explanation:

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It is sometimes observed that offspring do not resemble their parents for a particular character, even though the character vari

Yuki888 [10]

Answer:

Explained below

Explanation:

Sometimes offspring do not resembles their parents because of variation, so these character varies in population. When Darwin went to Galapagos Islands, he observed an amazing diversity of characters. He realized that there were many varieties of finches in the same island. He collected two sets of parent offspring data in two different years. Most of the parents who captured before their beak depth were known then he captured offspring with fledged and measured their beak depth. He calculated average beak depth of two parents and then compared with offspring beak depth.

8 0

3 years ago

Legumes, a type of plant, require Rhizobia, a type of soil bacteria, to survive since these organisms fix nitrogen during photos

Romashka-Z-Leto [24]

The answer is: the legumes will extinct, too.

It is known that plants cannot directly use atmospheric nitrogen. But, some legumes have a symbiotic relationship with bacteria that live in their root system. These bacteria are called Rhizobia and have the ability of nitrogen-fixation. In the root nodules, they use atmospheric nitrogen to convert it into ammonia, and later to ammonium, which can be used by plants. When legumes die, nitrogen from their remaining is released back to the soil where it is available to the other plants.

So, if <span>Rhizobia suddenly became extinct, the symbiotic relationship between will be interrupted. The legumes will not be able to use atmospheric nitrogen without the help of Rhizobia, and eventually, they will extinct, too.</span>

8 0

3 years ago

Read 2 more answers

Help please with one or two

FrozenT [24]

Answer:

typical magnification of an ocular lens is 10x. there are other settings used less frequently such as, 4x, 40x, and 100x.

Explanation:

4 0

2 years ago

Some organisms obtain energy and nutrients from plants in an ecosystem. These organisms have energy stored in their bodies. What

Afina-wow [57]

The answer to this question would be <span>Some is used by decomposers, and some is released into the environment as heat.
</span>
When an organism died, decomposer can degrade some of its remaining corpses and use the produced energy. Some of the parts can't be degraded like bones.
The total energy should not be decreased as it was opposing the law of conservation of energy.

8 0

3 years ago

Read 2 more answers

What are the precautions that should be token when using a photometer? please help me

Maksim231197 [3]

Answer:

PRECAUTIONS FOR USING A SPECTROPHOTOMETER :

1 . By allowing the lamps and electronics to warm up

2.By cleaning up any spills inside the cuvette compartment

3.By carrying out the set-up procedure in the correct order

4.By ensuring that %T or transmission is used as appropriate

5.By closing the door to the cuvette compartment before reading the result

6.By performing calibration checks after set up

7.By wiping fingerprints and spilt sample off the outside of the cuvette before measuring

8.By using the correct wavelength

PRECAUTIONS FOR USING A FRAME PHOTOMETER:

1. Do not move or Carry the unit when in use or connected to the mains electricity supply

2. There should be sufficient time for the chimney to cool before handling

3. Do not use acetylene with the flame photometer

4. Over adjustment of the fuel valve will cause excess flame

Do not position the product so that it is difficult to disconnect from the mains supply

5. Do not cover the chimney whilst in use.

6. Do not block or obstruct ventilation slots /airways

7. Do not operate or handle any part of the product with wet hands

I HOPE THIS WILL HELP AND IF NOT LET ME KNOW

8 0

2 years ago