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Lyrx [107]
3 years ago
10

Can someone please answer question 30 and 31 :)

Biology
1 answer:
aalyn [17]3 years ago
8 0
The students hypothesis would be something like: 
"I believe that some seeds must be exposed to cold before they germinate."

But what the student is missing is some samples from seeds that are not exposed to cold, since they are trying to figure out whether the seeds should be exposed to cold or not.
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Cytosine makes up 24% of the nucleotides in a sample of DNA from an organism.
Alchen [17]

Answer:

26%

Explanation:

if cytosine makes up 24%, then guanine also makes up 24%.

add these to get 48%.

subtract that from 100% to get a remaining 52%

then split the 52% between adenine and thymine to tell you that 26% is thymine

7 0
3 years ago
Answer the following questions:
Naddik [55]

Answer:

1. The respiratory system allows us to breathe . They bring oxygen into our body and remove carbon dioxide from the body .

2. Tiny hairs called cilia protect the nasal passageways and other parts of the respiratory tract, filtering out dust and other particles that enter the nose through the breathed air.

3. The throat (pharynx and larynx) is a ring-like muscular tube that acts as the passageway for air, food and liquid. It is located behind the nose and mouth and connects the mouth (oral cavity) and nose to the breathing passages (trachea [windpipe] and lungs) and the esophagus (eating tube).

4. The main function of the epiglottis is to seal off the windpipe during eating, so that food is not accidentally inhaled.

5. The heart pumps blood to the lungs for oxygenation and the lungs then give the heart back oxygen rich blood to be transmitted to the whole body

Explanation:

plss mark brainliest

4 0
3 years ago
Why does a pea plant with the genotype Rr produce some gametes that have the allele for round seeds?
Amiraneli [1.4K]

Answer:

The correct answer is - due to the law of segregation.

Explanation:

In the given case the genotype of Rr and as we know R is a dominant characteristic for round seeds and r represents the recessive allele for wrinkled seeds in a pea plant. So if a plant has Rr in its genotype it means it is a phenotypically round pea plant due to dominance in this heterozygous case.

The law of segregation states that two alleles of a gene of a specific trait will be distributed randomly and there is an equal chance of each allele to end up in the gametes, similarly in this case both alleles can be segregated to gametes and it is a random process.

3 0
3 years ago
Which statements describe asexual reproduction? Check all that apply results in offspring with different DNA than parent results
nlexa [21]

Summary. Asexual reproduction involves one parent and produces offspring that are genetically identical to each other and to the parent. Sexual reproduction involves two parents and produces offspring that are genetically unique.


7 0
3 years ago
Read 2 more answers
Would the co2 molecules be able to leave faster if the cell had a smaller volume or larger volume
JulijaS [17]

Answer: smaller volume

Explanation:

Small distance the co2 has to travel

3 0
2 years ago
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