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ozzi
3 years ago
10

What structure is found in some but not all plant cells

Chemistry
2 answers:
lilavasa [31]3 years ago
7 0

Answer: central vacuole, cell wall, chloroplasts.

Explanation:

Many animals and plants don’t have these structures.

AlekseyPX3 years ago
5 0
The chloroplasts i believe is the answer
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What is the general trend in electro negativity as you move from left to right across the periodic table
viva [34]

Answer:

On the periodic table, electronegativity generally increases as you move from left to right across a period and decreases as you go down a group. As a result, the most electronegative elements are found on the top right of the periodic table, while the least electronegative elements are found on the bottom left.

Explanation:

6 0
3 years ago
Select the correct answer.
garik1379 [7]

Answer:

the answer to ur question is B

Explanation:

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8 0
3 years ago
Reaction of HBr with 3-methylcyclohexene yields a mixture of four products cis-and trans-1-bromo-3-methylcyclohexane and cis-and
Umnica [9.8K]

Answer:

See explanation

Explanation:

The mechanism of this reaction including intermediates are shown in the image attached to this answer.

The reaction of  HBr with 3-bromocyclohexene yields trans-1,2-dibromocyclohexane as the sole product because; the proton first attacks the  3-bromocyclohexene  and a brominium ion is formed. This brominium ion is a cyclic intermediate as shown in the image attached.

Attack of a bromine ion afterwards must lead to the formation of trans-1,2-dibromocyclohexane as shown.

4 0
3 years ago
What fraction of the space within the atom is occupied by the nucleus?
Svet_ta [14]
<h2>Answer: <u><em>4.1 x 10 14 g/cm 3</em></u></h2>

Explanation:

3 0
3 years ago
Why is cellulose so difficult for most animals to digest?
NNADVOKAT [17]
The answer is C .Cellulose is a long chain of glucose and to be able to use any of the energy stored in them an organism must break it down into single glucose molecules, and this is why most animals go for a different diet. The chain is very difficult to break down and must be treated with concentrated acids at high temperature. This is a hard task to do and often time needs many stomachs.

3 0
3 years ago
Read 2 more answers
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