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Vladimir79 [104]
3 years ago
8

Please help me with biology assignment!

Biology
2 answers:
nekit [7.7K]3 years ago
5 0

Explanation:

If I read this correctly; The question that is check marked is regarding the scalp region.

The hair follicle that resides in the dermal layer of the skin & scalp.

The follicle interacts with hormones, neuropeptites & immune cells. There are 20 different cell types each with different functions...

lana [24]3 years ago
3 0

Answer:

okay so just act out the character when you write it down what exactly are they asking you to do the directions aren't even clear. I do not like what these teachers give out these

Explanation:

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A population of white moths lives in a forest near a factory. this factory burns coal and pollutes the air with black dust. over
marissa [1.9K]
The answer to your question is option b

This is because if the trees are black, and covered with soot due to the pollution, caused by industrialisation, the white moths will be easily seen and constantly hunted by the predator, compared with the black moth population as they camouflage easily. Ultimately, the white moths would be hunted to such an extent that their population would dramatically decrease
8 0
3 years ago
The scientists mapping the SNPs in the human genome noticed that groups of SNPs tended to be inherited together, in blocks known
Over [174]

Answer:

SNPs have shown that only 0.1 % of DNA sequences are different in the human genome between different individuals, thereby all the inherited phenotypic variation observed in our species is associated with only 0.1 % of differences at the genome level  

Explanation:

Haplotypes are block-like sequences of DNA that are inherited together due to low recombination rates. Moreover, single-nucleotide polymorphism (SNP) mapping is a very useful methodology used to map the site of SNP mutations (i.e., SNP variants). In this regard, it has been observed that there are approximately 10 million common SNPs in the human genome. These SNPs contribute to the wide range of phenotypic variation observed in human populations for different traits (e.g., eye color, hair, weight, height, etc). Moreover, researchers have determined that SNPs can be clustered into haplotypes, thereby haplotypes can be accurately sampled by as few as approx. 300,000 selected SNPs, which are sufficient to represent all of the genetic variation across different human genomes.

5 0
3 years ago
Why dose the amount of water in a river change during the year
Marizza181 [45]
Hello! 
The amount of water in a river varies for each particular area. Whether the area has been receiving rainfall or a drought. 
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Although that was not very much information, I thought I'd provide a small bit of information. Hope it helps. :)
8 0
3 years ago
Read 2 more answers
Describe what is happening during the female monthly cycle related to:
kakasveta [241]

Answer:

All women have to go through what is known as the menstrual cycle. This process allows a woman to be able to prepare for, and conceive, a baby, and carry him/her to full term. As such, there are a series of steps that the female body takes, both physically and physiologically, spurred by the rise and fall of hormones, to ensure the smoothness of the process and the possibility of conception.

The cycle is divided into 4 stages: the menstrual, the follicular, the ovulating, and the luteal stage. Each of them has a play of hormones that will play their part in helping the process be successful. These hormones are: FSH (Follicle Stimulating Hormone released by the Pituitary gland), LH (Luteinizing Hormone, also released by the Pituitary), estrogens, progesterone, and in the case of a pregnancy, hCG (Human Chorionic Gonadotropin, or the pregnancy hormone).

So, as to the question, the play of hormones, and how the cycle develops, would be like this:

1. Menstruation phase: After the late released egg is not fertilized during its timeframe of 24 hours, estrogen and progesterone levels drop, producing reactions in the body: the egg is sheded, the uterine wall lining is shedded, and blood, tissue and mucus comes out.

2. Follicular phase: Almost overlapping, the hypothalamus orders the Pituitary gland to start releasing FSH. This hormone will stimulate the ovaries to begin producing follicles, where the immature eggs are. Around 5 to 20 of them will begin getting matured for release. Only one, in rare ocassions 2, will end the process; the rest, will be reabsorbed by the ovaries. The follicle starts to release estrogens and progesterones that will signal the uterus to begin building up the walls with a lining rich in nutrients, in case of pregnancy.

3. Ovulating, or ovulation phase: As the maturation of the egg continues, the follicles get ready to release it into the fallopian tubes. As this happens, the Pituitary, stimulated by the rising levels of estrogens and progesterones, and by the work of the hypothalamus, releases LH, which will play a part not only in the final maturation of the egg, and the lining, but also in maintaining the levels of estrogen and progesterone so that a pregnancy is successful. At this point, the egg is released by the follicle and the process down the tube begins towards the uterus. It is here that pregnancy can take place.

4. Luteal phase: The follicle that releases the egg, becomes later on the corpus luteum, which will further produce estrogen and especially progesterone, to maintain the lining once the fertilized egg has implanted. If not, it will be reabsorbed and the declining levels of hormones will signal the body to initiate the menstrual phase.

6 0
3 years ago
Which statement does not describe cell cycle checkpoints.
masya89 [10]

Answer:

Explanation:

Defective checkpoints results in dealth of the cell.

5 0
3 years ago
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