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liubo4ka [24]
3 years ago
13

PLEASE ANSWER BOTH QUESTIONS 3 TIME I POST NO ANSWER :(((((

Biology
2 answers:
Alexandra [31]3 years ago
8 0
D, A

Add extra characters here
Lorico [155]3 years ago
8 0
A makes sense so the answer is <span>A</span>
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14. Which is true about a dependent variable in an experiment?
Grace [21]

c. It never changes during the experiment.

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3 years ago
Cerebrospinal fluid circulates within the ventricles of the brain and in the subarachnoid space outside the brain. Cerebrospinal
irina1246 [14]

Answer:

true

Explanation:

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it plays a vital role in regulating  blood flow, through a process called cerebral auto regulation,This is needed to maintain efficient cerebral blood flow of oxygen and other metabolites, and withdraw of metabolic wastes from the brain.

in order to analyze it to diagnose some neurological diseases  its sample is usually taken out in a process called lumbar  puncture.

4 0
3 years ago
Compare the light and dark reactions that occur in plants.
sp2606 [1]

Answer:

The light reactions occur when light is absorbed by the chlorophyll in plants. ... Water splits, producing oxygen gas which is released through the stomata on plant leaves. The dark reactions occur in the stroma of the chloroplasts when carbon dioxide is converted to sugar using energy derived from ATP and NADPH.

Explanation:

6 0
3 years ago
Read 2 more answers
What general type of plant food is produced by photosynthesis?
Karolina [17]

B) carbohydrates

[: The chemical change that occurs in the leaves of green plants. It uses light energy to convert carbon dioxide and water into glucose. Oxygen is produced as a by-product of photosynthesis. ] [: A type of carbohydrate.


6 0
3 years ago
Read 2 more answers
In a certain plant, tall stems (t) are dominant to short stems (t). a farmer crosses a short-stemmed plant with a heterozygous l
melisa1 [442]

The answers would be:

Genotype                Phenotype

     Tt                      Tall stemmed

     tt                       Short stemmed

Genotypic ratio : 2:2 or 1:1

Phenotypic ratio: 2:2  or 1:1  

<u />

<u>You can read on to see how this was done:</u>

Tall stems (T) are dominant to short stems (t).

First figure out the genotypes of the parents. We have a short-stemmed plant and a heterozygous long-stemmed plant cross.

For short stem to occur, you need 2 pairs of short alleles. So the first parent would have a genotype of tt.

Heterozygous long-stemmed means that the parent has one of each allele. So the genotype of the second parent would be, Tt.

Now we can make our Punnett Square.

tt x Tt

<u>       t        t  </u>

<u>T |  Tt  |   Tt</u>

<u>t  |   tt  |   tt</u>

Let's list down the genotypes and phenotypic results.

Genotype        no.         Phenotype

     Tt                 2           Tall stemmed

     tt                  2           Short stemmed

So from that we can answer the other questions:

Genotypic ratio : 2:2 or 1:1

Phenotypic ratio: 2:2  or 1:1  

8 0
3 years ago
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