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Margaret [11]
3 years ago
7

Answer number one please! I’ll mark you as brainliest

Biology
1 answer:
vovangra [49]3 years ago
8 0

Answer:

A. black fur and white fur

b. 50%

c. 50%

Explanation:

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When Jacob starts running, his legs move faster and his heart rate increases. Which types of muscles are involved in these chang
Alex

Answer:

skeletal muscles control his leg movement and cardiac muscles control his heart rate

4 0
2 years ago
Passive transport is also called blank and it doesn't require blank
Anarel [89]
I believe passive transport is a form of diffusion. And it doesn't require any energy unlike active transport.
8 0
3 years ago
Explain how a crime lab could use paper chromatography to determine if lipstick found at a crime scene matched the lipstick of a
FromTheMoon [43]

Explanation:

The lipstick from the crime would be crushed and dissolved in an appropriate liquid solvent. The lipstick would then be placed in one of the ink spots on the starting / base line of the paper. Another spot would be created for the lipstick with which it is being compared with.

The paper chromatogram would then be placed vertically on a solvent that acts as the mobile phase. After some time, when the solvent reaches the solvent front  of the paper chromatography, by capillary action, the chromatogram can be removed and left to dry.

Bands will have appeared on the chromatography paper formed from the different components of the lipstick. The bands of the lipstick from the crime scene and that with which it is being compared to are observed. If the bands are all aligned, horizontally, then this means it is a complete match. The lipstick must have been the same used at the crime scene.

Learn More:

For more on paper chromatography check out;

brainly.com/question/13232854

brainly.com/question/364792

#LearnWithBrainly

7 0
3 years ago
The adult spinal cord ends between the level l1 and l2 of the vertebral column. True or False
viktelen [127]

this is true...........

6 0
3 years ago
Suppose that an arginine residue in the active site of an enzyme was mutated to alanine. As expected, the alanine mutant was ina
Makovka662 [10]

Answer:

Alanine to lysine.

Explanation:

Mutation may be defined as the sudden, heritable change in the genome sequence of an organism. Two main types of mutation are chromosomal mutation and point mutation.

The mutation has occurred in which the arginine is replaced by alanine. The mutation that can restore to wild type is the conversion of alanine with lysine.    Since both arginine and lysine are basic amino acids. They both shows almost similar function and the replacement of lysine with alanine shows the wild type activity.

Thus, the answer is alanine to lysine.

5 0
3 years ago
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