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Serggg [28]
3 years ago
14

Robert hooks Discovery help scientists learn more about

Biology
1 answer:
Zolol [24]3 years ago
8 0

Answer:

Cell

Explanation:

Robert Hook is considered to be a pioneers in the field of Micro and cell biology. He was the person who discovered miscroscope that was a source of helping in discovery of several future breakthrough researches in the field of cell biology. During his experiment that lead to the invention of microscope, Hook carefully controlled the height and angle of the microscope by giving it the right illumination sources. He first of all examined the bark of trees where he could see small structures which he named as cell. In subsequent years after the discovery of microscope, scientists were able to learn more about cell and even subcellular organelles with their functions.

Hope it helps!

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Childbirth in mammals is an example of endocrine-controlled negative feedback, because the production of oxytocin during childbi
Rashid [163]

Answer:

B. False

Explanation:

Child-birth in mammals is not an example of endocrine-controlled negative feedback, because the production of oxytocin during childbirth doesn't result in additional oxytocin being synthesized by the posterior pituitary gland.

Oxytocin is the enzyme which is necessary at the time of birth in order to contract the walls of the uterus and expel the baby out of the body. Oxytocin levels rise at the onset of labour,causing regular contractions of womb and abdominal muscles. Oxytocin induced contractions become stronger and more frequent without the influence of progesterone and estrogen, which at high levels prevent labour.

5 0
3 years ago
Read 2 more answers
Hi i was wondering what a strong CER would be for the following scientific question:
Darina [25.2K]

Answer:

hey im working on the same thing, i'm also very confused, but the genes preform different functions

6 0
3 years ago
In wheat plants, the feature of having colored kernels is dominant to having white kernels that lack pigment. A true-breeding pl
Lynna [10]

Answer: It occurred a dihybrid cross and epistasis.

Explanation: In dihybrid cross, two different genes controlled two different traits. When they interact with each other is called Epistasis. However, in wheat plants, the genes related to color kernels don't act opposedly to each other. In other words, the genes have the same role in producing protein, so they can substitute for each other.

In the color determination mechanism, a biochemical reaction is necessary to convert a precursor substance into a pigment and that reaction happens with the product of either genes. That's why having a dominant allele makes the wheat colorful. So, crossing colored kernels with white ones will produce a heterozygous F1 generation. Crossing this generation will produce a F2 generation with modified ratio of 15 colored: 1 non colored because, every individual who has  dominant alleles will produce the substance and thus the biochemical reaction will happen. Only recessive homozygous ones won't have the substance and so won't have color.

6 0
3 years ago
Which segment of the small intestine receives chyme from the stomach?
Serga [27]
The duodenum.

The duodenum is the shortest segment of the small intestine. It receives chyme (partially digested food) from the stomach.
5 0
3 years ago
1. which of the following is a function of the nucleus?
777dan777 [17]

Answer:

1. Stores DNA

2. The nucleus is NOT the site of protein Assembly

3. Lysosome

4. Helps a cell keep its shape

5. Lysosomes store materials

Explanation:

3 0
3 years ago
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