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Gelneren [198K]
3 years ago
6

(problem 8, part 2) describe what happens at the initiation stage of transcription.

Biology
1 answer:
Arte-miy333 [17]3 years ago
3 0
Transcription<span> proteins assemble at a hairpin loop formed by inverted repeats in the DNA template. RNA polymerase creates a nick in one of the DNA strands and begins to separate the nontemplate from the template.</span>
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The anterior and posterior lobes of the pituitary differ in that _____.
sleet_krkn [62]

Answer:

many anterior pituitary hormones regulate other endocrine glands whereas posterior pituitary hormones regulate nonendocrine tissues

Explanation:

Anterior pituitary or adenohypophysis is the anterior lobe of the pituitary gland. Secretion of endocrine cells of the anterior pituitary is controlled by regulatory hormones released by hypothalamus. The hypothalamic releasing hormones bind to anterior pituitary endocrine cells, upregulating or downregulating their release of hormones. Anterior pituitary hormones stimulate endocrine glands: FSH and LH (ovaries and testes), TSH (thyroid), and ACTH (adrenal cortex).

Posterior pituitary or neurohypophysis is the posterior lobe of the pituitary gland. It  is not glandular it is just a collection of axonal projections from the hypothalamus. Posterior pituitary hormones regulate nonendocrine tissues: ADH-vasopressin (kidney tubules) and oxytocin (mammary glands, uterine tissues, brain).

7 0
3 years ago
Why are nutrients and gases most evenly distributed in a lake in the winter?
kvv77 [185]

When the temperature reaches 0˚C (32˚F), the top layer of the lake freezes and turns into ice. In solid form, water molecules are less dense and thus ice floats on the top of the lake.

This solid barrier prevents any wind-induced mixing as well as protects the relatively warm water underneath. Furthermore, light is also blocked so that photosynthesis is inhibited during this period. As the lake water is separated from the atmosphere, no direct oxygen diffusion occurs.

All these factors together causes a more even distribution of nutrients and gases in a lake in winter.

3 0
4 years ago
Plants whose leaves fall off at the end of the growing season are
Temka [501]
 I think they are deciduous trees
5 0
3 years ago
An acidic solution has a pH greater than 7. True or false?
IrinaK [193]

Answer: false

Explanation: If a solution has a pH greater than 7 it is more based, acidity is on the lower end

3 0
3 years ago
Read 2 more answers
What would happen if global warming were to continue
natita [175]
Many things can occur such as an increase in temperature.Which would then result in greater/destructive natural disasters. Temperature would cause either droughts or floods in certain places as well.
6 0
4 years ago
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