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Eva8 [605]
2 years ago
7

10. Which organelle directs all the functlons in

Biology
1 answer:
Norma-Jean [14]2 years ago
3 0

Answer:

a. Nucleus

Explanation:

just looked it up

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Equal masses of steel wool are placed in four beakers. Equal amounts hydrochloric acid (HCI) are added to three beakers in the f
Oksi-84 [34.3K]

Answer: the steel wool in the 3.0 M HCl reacts fastest.

Explanation:

3 0
3 years ago
Investigator Benton uses several methods to analyze hair samples found at the crime scene. He examines the physical features of
Diano4ka-milaya [45]

Answer:

Medulla.

By analyzing the DNA extracted from the hair follicle, the medullary index and the pattern of medulla in the hair samples obtained from a crime scene, an investigator can identify the owner.

Explanation:

The hair consists of follicle and shaft. The follicle is the part of the skin, where the hair grows and the hair shaft has three layers: an inner medulla,  a cortex, and an outer cuticle.

The morphology (physical characteristics) of hair provides a broad detail on the racial background of  an individual and an investigator can identify a  group of people who share similar  traits. But the hair without follicle cells attached to it, cannot  be used to identify a specific individual. If the follicle of a hair is present, then it can lead to individual identification by DNA analysis. Also the medulla of animals is larger than that in the humans. By comparing the medullary index (the ratio of the diameter of the medulla to the diameter of the entire  hair), it can be determined if the hair obtained from crime scene belongs to animals or humans. The macroscopic (length, color, and curliness) and  microscopic characteristics ( pattern of the medulla, pigmentation of  the cortex, and types of scales on the cuticle) of the hair samples are studied during a crime investigation. If the entire hair follicle (follicular tag) is present in the hair samples found at the crime scene, the blood and tissue attached to  the follicle is extracted and analyzed using DNA profiling. DNA analysis of the hair follicle provides  an identification with greater accuracy than the hair shaft.

6 0
3 years ago
Lysosomrs can be compared to the recycling and garbage centers of a city. How can this comparison be justified
IgorLugansk [536]
Lysosomes use a degenerative enzyme to eliminate un necessary materials from the cell and recycle parts that can be re used, much like a recycling centers eliminate waste from cities and find ways to reuse it.
4 0
3 years ago
What type of deafness is present if the bone-conducted sound is heard longer than the air-conducted sound?
NNADVOKAT [17]
The type of deafness that is present if the bone conducted sound is heard longer than the air conducted sound is CONDUCTIVE HEARING LOSS.
Conductive hearing loss refers to the situation where there is a problem conducting sound waves anywhere along the route through the outer ear to the ear drum and the tiny bones of the middle ear.
4 0
3 years ago
Question 6 Which statement BEST describes the relationship between photosynthesis and cellular respiration? A Both processes rel
mixer [17]

Answer:

c. The products of one process are the reactants of the other process

Explanation:

CARBOHYDRATE and oxygen  is the product of photosynthesis while it is reactant in respiration.

Similarly, Carbon dioxide is the reactant of photosynthesis while it is product of respiration.

3 0
3 years ago
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