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Salsk061 [2.6K]
4 years ago
8

What must occur before replication can begin?

Biology
1 answer:
Contact [7]4 years ago
6 0

Answer:

The two DNA strands must separate

Explanation:

This separation is mediated by DNA helicases enzymes. Using ATP energy, they breakdown the hydrogen bonds between the two strands of the double helices giving access of DNA polymerase to single-stranded DNA required for replication. The DNA polymerase can only bind to single-stranded DNA.

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kolbaska11 [484]
C, 45% I'm pretty sure










8 0
4 years ago
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What is the fate of the products produced from photosynthesis​
otez555 [7]
Photosynthesis produces oxygen and water. Photosynthesis is the result of a cycle. Humans use oxygen for respiration, the product produced from human respiration is carbon dioxide. Then plants absorb carbon dioxide from the air and turn it into oxygen with photosynthesis, this goes on and on as a cycle.
3 0
4 years ago
As you completed this assignment and reviewed the lectures (see the socioecological model lecture and diagram provided), you rea
Jlenok [28]

Answer:

factors that influenced daily food choices:

  • biological determinants
  • economical determinants
  • physiological determinants
  • physical determinants
  • social determinants
  • behavioral determinants

Explanation:

Social -ecological system is the set of different factors which influence our living styles, our dietary habits, our dress choice etc. on a daily basis. In today's world, everything act is done by people are only based on its popularity or followed by trends. Similarly, our daily food choices are also influenced by the trends and our surroundings in which we live. There is the impact of multiple factors on our daily food choices.

  1. Behavioral factors: behavioral factor is the most important factor which have a huge impact on our daily food choice. An individual health condition, behavior, attitude, work routine majorly influence the food choices. An individual personal preferences, likes and dislikes also influenced his food choices.
  2. Biological factors: these factors can influence individually as well as globally. Hunger, nutrient requirements, condition of safe food, health conditions are the major biological factors which play major role, when it comes to choose daily food. These factors can affect the global food preferences, for example in the pandemic of convid-19 food choice were similar of every individual globally.
  3. Economic factors: availability of food, cost of food, balancing of needs and demands also impacts our daily food choices. If cost are too high of basic food and the  availability is only limited to certain people, it automatically impacts on the food choice of an individual.
  4. Social Factor: when we talk about social factors these are the group of different small factors like culture, work environment, school, colleges, religious preferences, friends circles, demographic conditions etc. our daily food choices are mostly based on the social factors because our likes and dislikes, meal patterns, our preference of food (cooked, raw, packages, cooking style etc.)  Everything based on the impact of the surroundings. In schools and colleges, students are bound to eat what is available or what their friends prefer to eat. Religious backgrounds always choose as per their rulings. Traditional foods, cultural heritages also an impactful factor for our daily food choices.
  5. Physiological factors: mental health condition are also one of the important factor which can not be neglected when we choose our food to eat. A healthy individuals preferences will always be different from a sick person.

Social-ecological model can help us with our daily food choices by giving us the  knowledge of the factors and its healthy impact on our food choices which can lead us to a healthy life and prosperous environment. Smart choice not only make us health but also make the environment healthy for our lives.

7 0
3 years ago
How do bacteria regulate transcription of these operons?
Semmy [17]
Kindly see answers below:

1. operon is not transcribe• b.) lac operon: lactose absent• e.) trp operon: tryptophan present2. operon is transcribed, but not sped up by the positive control• a.) trp operon: tryphophan absent• d.) lac operon: lactose present, glucose present3. operon is transcribed quicklu through positive control• c.) lac operon: lactose present, glocuse absent
7 0
4 years ago
Which could be the measures of the three angles of an acute triangle?
pochemuha
It is b . Because three of them are less than 90.
7 0
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