All categories

3 years ago

Please answer Question no. 2 .. I will mark you brainliest

Biology

2 answers:

Tcecarenko [31]3 years ago

7 0

Answer:

ask to goggle . it will be always right

icang [17]3 years ago

4 0

Answer:

ears?????

Explanation:

because i try that too i hope it helps

You might be interested in

What does carrying capacity mean?

STALIN [3.7K]

Explanation:

d. when the growth rate is at its highest

6 0

3 years ago

Question 1 of 10

Sati [7]

Answer: Option A) Parathyroid glands

Explanation:

The Parathyroid gland located in the neck region helps in the secretion of an hormone called Parathormone.

This hormone helps to raise the levels of calcium ions in the body, by preventing the loss of calcium ions through urine, and also preventing excess deposit of calcium ions in the bone, thus regulating bone density.

6 0

4 years ago

What are the three functions of a cell membrane? I will give Brainliest to the best answer!

____ [38]

(1) they keep toxic substances out of the cell;
(2) they contain receptors and channels that allow specific molecules, such as ions, nutrients, wastes, and metabolic products, that mediate cellular and extracellular activities to pass between organelles and between the cell and the outside environment;
(3) they separate vital but incompatible metabolic processes conducted within organelles.

3 0

3 years ago

1. How did dark matter affect the development of structures in the early universe?

-Dominant- [34]

Answer:

1. It seeded the development of galaxies

2. The percentage of dark matter has shrunk in scientists' estimates since the 1980s

The percentage of unknown material has grown in scientists' estimates since the 1970%

3. Supernovae that are moving away at an accelerating rate.

Explanation:

1. How did dark matter affect the development of structures in the early universe?

It seeded the development of galaxies.

It seeded the development of quasars.

It cooled pockets of gas to form nebulae.

it became part of black holes

2. How has scientific understanding about the composition of the universe changed over time? Select the two correct answers.

The percentage of dark matter has shrunk in scientists' estimates since the 1980s

The percentage of unknown material has grown in scientists' estimates since the 1970%

The percentage of ordinary matter has grown in scientists' estimates.

The percentage of dark energy has shrunk in scientists estimates

3. Which is evidence for the existence of dark energy?

Pulsars that seem to be moving closer at an accelerating rate.

Supernovae that are moving away at an accelerating rate.

Black holes that are expanding at a constant rate.

Galaxies that are rotating at a constant rate.

<u><em>Please don't use these answer's to cheat they are to help only.</em></u>

6 0

3 years ago

The purple spots on colorless background of corn kernels observed by barbara mcclintock were the result of _______.

vitfil [10]

The purple spots on the colorless background of corn kernels observed by Barbara McClintock were the result of the transposition of the Ds elements out of the color gene.

<h3>What are the genetic elements found in corn?</h3>

A transposable element is removed from one spot in the DNA and inserted into a different site in the DNA during the process of genetic transposition, which allows genes to shift their location on chromosomes.
The first recognized genetic instability was caused by genetic transposition.
The size of the tissue patch displaying the reversion phenotype increases as a reversion event happens earlier in the kernel development.
Barbara McClintock saw purple dots on maize kernels with an otherwise colorless background.
These spots were caused by the Ds components of the color gene being transposed.
The wild-type (purple) phenotype manifests itself in cells where Ds from the color gene "C" sequence has been lost.

Hence, Barbara McClintock discovered purple patches on the colorless backdrop of maize kernels due to the transposition of the Ds elements out of the color gene.

To learn more about Transposition refer to:

brainly.com/question/13447171

#SPJ4

8 0

2 years ago