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Bezzdna [24]
3 years ago
5

Select all statements which describe the role of calcium in the soil/plant environment.

Biology
1 answer:
Inessa [10]3 years ago
3 0

Answer: the statements are not given, so I will state the role of calcium in plants.

Calcium pectate, is responsible for holding together the cell walls of plants, it is also used in activating certain enzymes and to send signals that coordinate certain cellular activities in plants. Calcium helps to maintain chemical balance in the soil, it reduces soil salinity, and improves water penetration within soil.

When there is calcium deficiency, it leads to localized tissue necrosis causing stunted plant growth, dead leaf margins or curling on the leaves, and eventual death of terminal buds and root tips of the soil/plant.

Excess levels calcium in the soil can reduce a plant's uptake of other important nutrients such as phosphorus, magnesium, boron, potassium, copper, zinc or iron, leading to deficiencies of these nutrients.

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Describe characteristics of a biological concept process or model represented visually.
vesna_86 [32]

Structure of Water and Hydrogen Bonding

  • living systems depend on water and its polarity as well as hydrogen bonds
  • hydrogen bonds result in the cohesion: ability for water molecules to stick together through hydrogen bonds, adhesion: ability for polar part of water to stick to other polar surfaces and surface tension: water's attraction to each other in bonds rather than air so have tension on surface
  • cohesion of water is the Attraction between molecules of the same substance.
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To know more about  Hydrogen Bonding   visit : brainly.com/question/10904296

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7 0
1 year ago
An individual with (naturally) curly hair and an individual with (naturally) straight hair mate; all of their offspring have (na
Reptile [31]

Answer: Incomplete dominance

Explanation: Incomplete dominance is an aspect of go-between inheritance whereby one allele for an outstanding characteristic is not totally represented over its allele appearing in pairs. This brings about about a third set of noticeable characteristics of an individual occurring from the interaction of its genotype with the environment in which the represented physical characteristics like hair type, in this case, is a mixture of the phenotypes of the two alleles.

5 0
3 years ago
After people have been drinking: ✗
mario62 [17]

For the first Question: The right answer is only A.

After people have drunk, it will be harder for them to make quick decisions, as is the case in driving, since motor coordination and judgment are impaired,

It can take up to two hours or more to get rid of the alcohol (it depends on the ethnicity of the person and whether it is a regular drinker or not), so it would take a lot more than an hour to get rid of alcohol in the body.


For the second question: the right answer is All above

According to the National Institute on Alcohol Abuse and Alcoholism in the USA, one standard drink contains approximately 14 grams of pure alcohol, which represents the measures mentioned in the MCQ.


For the third question: 

When the victim has just absorbed too much toxic, he initially has troubles of consciousness and a ventilatory stop that can change, in the absence of first aid, to death.

As soon as you discover this toxic abuse, call the SAMU (15) and do the first aid:

In case of disturbances of consciousness, carefully tilt your head backward.

Check for the presence of breathing movements, and place the casualty in the lateral safety position.

In the presence of respiratory arrest, after having checked the presence of a carotid pulse, practice mouth-to-mouth.

In all cases, surveillance of the victim is mandatory until the arrival of medical aid.

6 0
3 years ago
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Oxygen gas (O2) is produced by plants and algae. What is the source
Andrei [34K]
The answer is C. Carbon Dioxide and also A) water

Plants and algae use carbon dioxide and water in presence of sunlight to perfrom photosynthesis. Oxygen is a by-product of this process and is used later by the plant for respiration.
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3 years ago
Each hereditary trait corresponds to what
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Sequence of nitrogen bases
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