BIOLOGY MIDDLE SCHOOL

Exocytosis and endocytosis are ways that cells ________take in and release materials.A. actively
B. passively

Answers

Answer 1
Answer:

Answer:

The answer to this question is Letter A
Answer 2
Answer: I would say it’s actively A.

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Contrast one major difference between selective breeding and genetic engineering

Answers

Selective breeding is where humans choose individual of the same species that have a trait that favors economic growth or any other benefits, then breeding these favorable species until most of the population are the species with the favorable genes. Meanwhile, genetic engineering is where human alters, changes, inserts DNA to modify organisms.

Therefore, one major difference is that selective breeding does not include altering the DNA, while genetic engineering is the altering of DNA.

Your cell takes in oxygen, water and food. What is one waste products that leaves your cells?

Answers

One thing I looked up and saw was urine and carbon dioxide.
Lactic acid and carbon dioxide

During a chemical reaction, increasing the temperature often A. increases the rate of chemical change. B. prevents a chemical change from occurring. C. decreases the rate of chemical change. D. reverses the direction of chemical change.

Answers

Answer:

it is A

Explanation:

because if you want to increase the temperature often then you have to increase the rate of the chemical change . I hope that is okay thank you

Nitrogen gas is more abundant...

Answers

Answer:

Nitrogen like other elements is cycling between air and soil in different forms.

Explanation:

When Nitrogen is in the air, there are some specialized bacteria (Nitrogen fixing bacteria) which are capable of transform  gas Nitrogen in "solid" Nitrogen that can be asimilated by plants, these bacteria are asociated with plants and live in symbiosis in their roots. Nitrifying bacteria can also transform the Nitrogen in the air and fix it into the soil and denitrifying bacteria can transform  soil Nitrogen ,in atmospheric Nitrogen which is present in the air to keep the Nitrogen cycle.

Climate characterized by mild temperatures is ______. Question 4 options: tropical humid dense temperate

Answers

The correct answer is - temperate.

The temperate climates can simply be described as climates with milder temperatures. These climates have changes of seasons, four of them, spring, summer, autumn, and winter. The springs and autumns tend to have mild temperatures, the summers are warm, and the winters are cold, but the highest and lowest temperatures do not come close to the extremely high temperatures in the tropical zone, or extremely low temperatures in the high latitude zones. So these climates have temperatures that are in between the extremes of the low and high altitudes, thus they are milder climates.

1: Why are siblings not genetically identical even if they have the same parents?2: Why are offspring not genetically identical to either the parent in sexuall reproduction?

Answers

each sperm and egg cell combine differently, so even if the parents are the same, the genetic material in their reproductive cells is different and can combine in different ways. the children are not clones of their parents, rather combinations of their traits
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