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Ivanshal [37]
3 years ago
5

Before DNA was discovered, in which materials did scientists think the genetic material was stored?

Biology
1 answer:
natima [27]3 years ago
5 0

Answer: We all know that DNA act as repository of genetic information in most organism. But before the discovery of DNA it was thought that proteins act as a genetic material because protein is the final product of the cell dogma of cellular system and proteins helps in the formation of tissues and organs.

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What instrument do we normally use in our labs at school to observe microscopic things?
Musya8 [376]

Answer:

A microscope!

Explanation:

A microscope is used to magnify objects that are too small to be seen by the human eye. I hope this helps! :)

6 0
3 years ago
Which process can transport substances against the concentration gradient?
anzhelika [568]

Answer:

The answer to your question is: Active transportation

Explanation:

Cell can move molecules in or out of it by two processes: Active or Passive transport.

Active transport:  is the movement of molecules against a concentration gradient. Use proteins or enzymes to happen.

Passive transport: is the movement of molecules or ions from a higher concentration to a lower concentration.

7 0
3 years ago
PLEASE ANSWER ASAP (BRAINLEST!!!!)
lesya [120]

Answer:

1. Cell Wall

2. Amount of Vacuoles

3. Plastids

4. Size

5.  Plasmodesmata

Explanation:

1. Animal Cells dont have cell wall, while Plant Cells do.

2. Animal Cells contain many/ multiple vacuoles, while Plant Cells only contain one.

3. Animal Cells dont have plastids, Plant Cells do have (eg. Chloroplasts)

4. Animal Cells are larger in comparison to Plant Cells

5. Animal Cells dont have plasmodesmata while Plant Cells do have.

7 0
2 years ago
Level of body organization occupied by a bone
marusya05 [52]
A bone is tissue. It forms a part of the skeletal system which is made up bones, joints, ligaments and cartilage. Cells work together in groups known as tissues. A tissue is defined as a group of similar cells working together to carry out a certain task. Examples are skin, bone, blood. Tissues in turn are grouped together to form organs. An organ is defined as a group of tissues that work together to carry out a certain task . Examples are heart, lungs, liver.
8 0
3 years ago
Carbon in the ocean originates from the atmosphere.<br> True <br> Or <br> False?
icang [17]

Answer:

True

Explanation:

In fact, there is a Oceanic Carbon cycle! Carbon dioxide get absorbed by the ocean's surface from the atmosphere and then get converted into a dissolved inorganic compound and so on.

3 0
3 years ago
Read 2 more answers
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