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3 years ago

Before the invention of money which system of tradewas used? *

Biology

1 answer:

Sonbull [250]3 years ago

8 0

Answer:

A barter system is an old method of exchange. Th is system has been used for centuries and long before money was invented. People exchanged services and goods for other services and goods in return.

Explanation:

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This diagram shows how seed plants are grouped. Which is the missing label? Bryophytes Angiosperms Pteridophytes Monocots

aleksandrvk [35]

your answer is angiosperms

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3 years ago

Read 2 more answers

Merle is a marking pattern in canine coats that appears as a marbling of color in a solid coat. The merle gene displays incomple

Over [174]

Answer:

1. double merle with short coat: 1/4 (e).

2. double merle with long coat: 0 (a).

3. merle with short coat: 1/2 (g).

4. merle with long coat: 0 (a).

5. solid with short coat: 1/4 (e).

6. solid with long coat: 0 (a).

1. double merle with short coat: 3/16 (d).

2. double merle with long coat: 1/16 (b)

3. merle with short coat: 3/8 (f).

4. merle with long coat: 1/8 (c).

5. solid with short coat: 3/16 (d).

6. solid with long coat:1/16 (b)

Explanation:

Available data:

CSCS individuals display a solid coat
CMCS individuals are merle and show patches of fur with a lighter, mottled effect
CMCM individuals are "double merle" and show patches of fur with much more pronounced lightening
short coats, L-, being dominant to long coats, ll.
Cross: merle long-coated dog x merle short-coated dog

Parentals) CMCS ll x CMCS LL

Gametes) CMl, CSl, CMl, CSl

CML, CSL, CML, CSL

Punnett square) CMl CMl CSl CSl

CML CMCM Ll CMCM Ll CMCS Ll CMCS Ll

CML CMCM Ll CMCMLl CMCS Ll CMCS Ll

CSL CMCS Ll CMCS Ll CSCS Ll CSCS Ll

F1) 4/16 = 1/4 = 25% CMCM Ll, double merle short-coated individuals

4/16 = 1/4 = 25% CSCS Ll, solid short-coated individuals

8/16 = 1/2 = 50% CMCS Ll, merle chort-coated

Cross: merle short-coated dog x merle short-coated dog

Parentals) CMCS Ll x CMCS Ll

Gametes) CML, CMl, CSL, CSl, CML, CMl, CSL, CSl

Punnett square) CML CMl CSL CSl

CML CMCM LL CMCM Ll CMCS LL CMCS Ll

CMl CMCM Ll CMCM ll CMCS Ll CMCS ll

CSL CMCS LL CMCS Ll CSCS LL CSCS Ll

CSl CMCS Ll CMCS ll CSCS Ll CSCS ll

F1) 1/16 CMCM LL, double merle short-coated individual

2/16 CMCM Ll, double merle short-coated individual

1/16 CMCM ll, double merle long-coated individual

2/16 = 1/8 CMCS LL, merle short-coated individual

4/16 = 2/8 CMCS Ll, merle short-coated individual

2/16 = 1/8 CMCS ll, merle long-coated individual

1/16 CSCS LL, solid short-coated individual

2/16 = 1/8 CSCS Ll, solid short-coated individual

1/16 CSCS ll, solid long-coated individual

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3 years ago

Identify two cell structures involved in modifying and transporting proteins out of the cell. Structure:

Ede4ka [16]

6 & 7

Structure 6 is the Rough Endoplasmic Reticulum ( RER) while structure 7 is the Golgi apparatus.

Explanation:

The RER has ribosomes aligning its outer membrane (reason why it's referred to as called rough ER). The ribosomes manufacture polypeptide chains that enter the lumen of the RER. The polypeptide chains are properly folded using chaperones in the lumen of the RER and undergo post-translation modifications, These proteins then undergo Quality Control checks and the proper ones are allowed to proceed to the Golgi apparatus.

Proteins from the RER reach the Golgi apparatus through vesicles that bud off of the trans side of the RER then fuse with the cis side of the Golgi apparatus. The Golgi perform a few more modifications to the proteins including tagging them for delivery , then packages them. Vesicles carrying the proteins bud off of the trans side of the Golgi and get transported to their destination inside or outside the cell.

Learn More:

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3 years ago

What is reactants bla bla bla

vazorg [7]

Answer:

a substance that takes part in and undergoes change during a reaction.

Explanation:

blalalalalalalaalalalalalalalalallaalanbalanslkandkljewndnhsliearJCBGj hcuhsaknm

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3 years ago

A researcher is evaluating the expression of p53 in cells she is culturing in the laboratory. She notices that in a small group

spin [16.1K]

Answer:

p53 gene is an important gene that regulates the proper functioning of the cell. This gene plays an important role in the cell cycle progression and acts as genome guardian.

Any mutation in p53 leads to the formation of the different types of cancer cells. The p53 gene is activated by teh phosphorylation at the particular sites. High levels of phosphorylated p53 in the cell indicates that the cells DNA is highly damaged and mutated.

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3 years ago

Before the invention of money which system of tradewas used? *​

Before the invention of money which system of tradewas used? *