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Lena [83]
3 years ago
12

Which enzymes do bacteria produce naturally as a defense against foreign dna injected into the bacteria by a virus?

Biology
1 answer:
castortr0y [4]3 years ago
6 0
Bacteria produce restriction endonucleases, or restriction enzymes, that recognize and cut up foreign DNA, including certain phage DNA.
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A green pea plant (Gg) reproduces with a yellow pea plant (gg). What is the dominant phenotype?
julia-pushkina [17]

Genotype is your complete heritable genetic energy Phentype is a discription of your actual physical characteristics.

answer - green pea plant is phenotype yellow is genotype

4 0
3 years ago
Which is true about water molecules?
rodikova [14]

Answer: C

Explanation: Water is a polar molecule because the electrons of the hydrogen atoms get "pulled" towards the electrons of the oxygen atom. Which is both positive and negative on opposite ends.

It could be B as well but, I believe it's C

3 0
3 years ago
Think about the lab procedure you just read. Label each factor below V if it was variable during the procedure or C if it was co
Crazy boy [7]

Answer:

The factors which remained constant are as follows -

  1. material used as the membrane
  2. amount of substances used
  3. number of trials

The factors which have shown variation are as follows -

  1. molecule size (large starch molecules vs. small glucose molecules)
  2. whether the molecules diffused through the membrane (tubing)

Explanation

Some factors with in the experiments remained constant from the point of starting of the experiment to its end. While some factors were varied to study its impact on the experiment rate of progression or on the final product formed. Thus , out of the following given factors, the ones that remained constant are -

  1. material used as the membrane
  2. amount of substances used
  3. number of trials

The factors which have shown variation are as follows -

  1. molecule size (large starch molecules vs. small glucose molecules)
  2. whether the molecules diffused through the membrane (tubing)
8 0
3 years ago
Read 2 more answers
1pt Salts dissociate into component ions when placed in
dexar [7]

Answer:

D. Water

Explanation:

the covalent bonds of water are stronger than the ionic bonds in the salt molecules so they dissolve.

8 0
3 years ago
Which statement best explains why a plant cell has chloroplasts but most animal <br> cells do not?
irinina [24]

Answer:

Both animal and plant cells have mitochondria, but only plant cells have chloroplasts. Plants don't get their sugar from eating food, so they need to make sugar from sunlight. Because animals get sugar from the food they eat, they do not need chloroplasts: just mitochondria.

Explanation:

5 0
3 years ago
Read 2 more answers
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