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3 years ago

Why would cells need to move things in and out?

Biology

2 answers:

Phoenix [80]3 years ago

4 0

Answer:

Cells do not generally allow such materials to go in because they are having a cell membrane outside. The cell membrane only allows the materials which are required for the growth of the cell such as water and minerals.

OlgaM077 [116]3 years ago

3 0

So they can reproduce more cells

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Tanzania [10]

Answer:

Photosynthesis produces: glucose and $O_{2}$

...from $CO_{2}$ , energy (light) and $H_{2} O$

Respiration produces: energy (ATP), $CO_{2}, H_{2} O$

....from glucose and $O_{2}$

Explanation:

These end products, namely $O_{2}$ and glucose are then used in respiration...

Using energy in the form of solar energy, plants, phytoplankton, algae, and other microorganisms produce chemical energy via photosynthesis. This complex mechanism is central to these species.

They combine light energy from the sun, water, and carbon dioxide.

6 $CO_{2}$ + 6 $H_{2} O$ + (energy) → $C_{6} H_{12} O_{6}$ + 6 $O_{2}$

In the mechanism of cellular respiration, organisms extract energy from food. Sugars in the form of glucose are broken down into carbon dioxide and water during aerobic respiration in mitochondria to produce energy in the form of ATP (adenosine triphosphate).

<h3> $C_{6} H_{12} O_{6} + 6 O_{2} _{\to \$ $6CO_{2} + H_{2} O + energy (ATP)$ </h3>

The waste products, $CO_{2}$ and $H_{2} O$ , result from respiration, these are used as reactants in the photosynthetic process. In turn, its products are the reactants $O_{2}$ and $C_{6} H_{12} O_{6}$ in respiration.

4 0

2 years ago

Few seeds can be dispersed by more than one method of seed dispersal.’ Explain with suitable examples.

MrMuchimi

Answer:

There are five main modes of seed dispersal: gravity, wind, ballistic, water, and by animals. Some plants are serotinous and only disperse their seeds in response to an environmental stimulus.

Gravity: A good example of gravity dispersal is the marigold flower. When they are ready, these seeds drop to the ground.

Wind: There are two types of wind dispersal adaptations, the floaters, and the fliers:

(wind) Floaters: The common dandelion is a good example of this type of seed dispersal.

(wind) Fliers: Maple seeds grow in pairs, but when they are mature, they separate, and a strong wind can pull them from the stem

Ballistic: Some common examples of this type of dispersal are garden peas. When the cells grow older, the result is that the pods break open and twist. This twisting actions pops the seeds lose and pushes them away from the pod.

Water: Coconuts have a husk that surrounds the seed. This husk is very buoyant and a coconut seed can float across hundreds of miles of ocean before washing ashore on a new island to germinate and grow into a tree.

Animals: there are also two types of these, hitchhikers and edibles. Seeds that stick to the outside of animals, or are spread when they go out the other end after being eaten:

Hitchhikers: Some examples are cockleburs and foxtail.

Edibles: These seeds are surrounded by good tasting fruit, like apples and peaches.

7 0

2 years ago

Approximately 1 week after conception, the developing organism is called a(n):

VMariaS [17]

The developing organism is a fetus.

3 0

2 years ago

In a nucleotide, which would change based on the genetic code of the organism?

Setler79 [48]

Answer:

The correct answer is nitrogen base

Explanation:

The nucleotide sequence of one codon differ from that of another codon by the presence or absence of specific nitrogen base.The nucleotide sequence of different codons contain different nitrogen bases.

As a result change in genetic code result from the change in the nitrogen bases of the codons present in the genetic code.

In simple words change in single nitrogen base of a codon will change the entire codon.

6 0

2 years ago

What are the two main functions of mitosis?

Nikolay [14]

Mitosis helps in the growth by means of hyperplasia. It also helps in reproduction in single celled organisms.

Neuron and Red Blood Cells doesn't undergo cell division once formed.

Osteoblasts help in forming new bones and joining old ones after there's a fracture in bone.

<h3>Explanation:</h3>

Mitosis is the process by which a cell divides into two daughter cells. It helps in growth of multicellular organisms as well as reproduction in single celled organisms.

The Red blood cells are formed from the bone marrow megakaryocytes and never undergo mitosis. Same are the neurons which are formed from stem cells and never undergo cell division.

The osteoblasts come into action as the bone breaks. They diposit new calcium compounds between the broken part of bones. This leads to irregular growth of bones between them which is then remoulded and brought back to shape by osteoclasts and osteocytes.

4 0

3 years ago