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vagabundo [1.1K]
3 years ago
13

Why do plant cells need a cell wall but animal cells do not

Biology
1 answer:
morpeh [17]3 years ago
6 0
Cell walls are rigid which gives plants their shape. Animals have only cell membranes which allows animals to be flexible as animals are moving organisms. Plants, on the other hand, are sturdy and upright and are sessile organisms. Cell walls allow plants to grow upright as high as their maximum height and to be sturdy enough to survive harsh environments.
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Los aminoácidos tienen una parte variable denominada
vladimir1956 [14]

Answer: The building blocks of proteins are amino acids, which are small organic molecules that consist of carbon atoms linked to an amino group, a carboxyl group, a hydrogen atom, and a variable component called a side chain.

Translation:

Los componentes básicos de las proteínas son los aminoácidos, que son pequeñas moléculas orgánicas que consisten en átomos de carbono unidos a un grupo amino, un grupo carboxilo, un átomo de hidrógeno y un componente variable llamado cadena lateral.

7 0
3 years ago
Choose all the answers that apply.
nekit [7.7K]

Answer:

carry thousands of genes

Explanation:

Genes are contained in chromosomes, which are in the cell nucleus. A chromosome contains hundreds to thousands of genes. Every normal human cell contains 23 pairs of chromosomes, for a total of 46 chromosomes. Some traits are caused by mutated genes that are inherited or that are the result of a new gene mutation.

7 0
3 years ago
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Which method of heat transfer can occur in empty space?.
nordsb [41]
Heat radiation.

This is the form of heat transfer that doesn’t need a medium to transfer through.

That’s how heat from the sun gets to earth, even though empty space is very cold.
3 0
3 years ago
Read 2 more answers
Choose the term that best matches the description given.
harina [27]

\huge\color{pink}{\underline{\underline {Question}}}

<h3>Choose the term that best matches the description given.</h3>

Cells that engulf and destroy bacteria _____.

\huge\color{pink}{\underline{\underline {Answer}}}

Cells that engulf and destroy bacteria <u>phagocytes</u><u>.</u>

5 0
3 years ago
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Suppose an experimenter becomes proficient with a technique that allows her to move DNA sequences within a prokaryotic genome.
Vladimir [108]

Answer:

D) The structural genes will be transcribed continuously.

Explanation:

Suppose an experimenter becomes proficient with a technique that allows her to move DNA sequences within a prokaryotic genome.  If she moves the operator to the far end of the operon, past the transacetylase (lacA) gene, the structural genes will be transcribed continuously.

A structural gene is a gene that codes for any RNA or protein product other than a regulatory factor (i.e. regulatory protein).

7 0
4 years ago
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