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maxonik [38]
3 years ago
6

Elements in the first group of the periodic table are ( ) ?

Biology
2 answers:
Ostrovityanka [42]3 years ago
7 0
The first row of the f-block elements are called lanthanoids
elena-14-01-66 [18.8K]3 years ago
4 0
H, Li, Na, K, Rb, Cs, Fr
You might be interested in
30points Help me
Solnce55 [7]

Answer:

A) Adenosine triphosphate, or ATP, is an organic compound that provides energy for many different metabolic processes. In the chloroplasts, ATP is a product of the first stage of photosynthesis, and it provides energy for the second stage. NADPH is an energy-carrying molecule created during the first part of photosynthesis when chloroplasts convert light energy into chemical energy. NADPH provides the energy needed for plants make sugar from carbon dioxide in the second stage of photosynthesis.

B) In photosynthesis in presence of sunlight plant utilizes carbon dioxide and water to produce carbohydrates and oxygen.   And the Oxygen is released out by the plant during day time.  The released Oxygen is utilized by the living organism and undergo the process of respiration.

C) There is no one “most important” enzyme, but Rubisco is the catalyst that plants use to fix atmospheric carbon into biomolecules as part of photosynthesis. It is hyperabundant, representing a significant proportion of soluble protein in leaves, and is thought to be the most abundant protein on Earth.

Explanation: sorry its so long

8 0
3 years ago
If a cell has a diploid number of 8 (2n = 8) before meiosis, how many chromosomes will be in each of the four daughter cells aft
Naddik [55]

Answer:

The final product is four gametes, two of them with 5 chromosomes, and the other two with 3 chromosomes each.

Explanation:

If nondisjunction occurs during meiosis 1, a pair of homologous chromosomes fail to separate, and one of the daughter cells will have the two chromosomes while the other cell will not get any chromosome from the pair.

If meiosis 1 occurs normally, but nondisjunction occurs in meiosis 2, sister chromatids fail to separate.  

The usual process of meiosis produces four daughter haploid cells (n) from a diploid germ cell (2n). Each daughter cell is haploid because they have half the number of chromosomes of the original one.  

If the diploid number of the original cell is 8 (2n=8), then under normal conditions, each haploid daughter cell should have 4 chromosomes (n = 4).  

But in the exposed example, one pair of homologous chromosomes experiences nondisjunction during meiosis I (in the attached file, you will recognize this pair as the red one). The other chromosomes separate as usual. So one of the daughter cells will have one extra chromosome than expected (five instead of four), and the other daughter cell will lack one chromosome (three instead of four). Meiosis II occurs normally. The final result is the formation of four gametes, two of them with 5 chromosomes, and the other two with 3 chromosomes each.

6 0
2 years ago
1. How have humans evolved in regards to their brain size, jaw
ale4655 [162]

Endocasts of Homo erectus (left) and Homo sapiens (right) illustrate rapid increase in brain size. As early humans faced new environmental challenges and evolved bigger bodies, they evolved larger and more complex brains. Large, complex brains can process and store a lot of information.

6 0
3 years ago
A population of rodents settles on the shore of an island close to the Arctic Circle. The landscape consists mainly of rocks. If
rjkz [21]

Answer:

most likely disruptive selection

Explanation:

pretty sure they will reproduce to make slightly bigger offspring that can hide in rocks and stay warm

6 0
3 years ago
How do temperature and salinity affect deep water currents?
cupoosta [38]

Differences in the density of water can also cause currents to form and move. Density is affected by temperature and salinity. Cold water or water with dissolved salts (higher salinity) is denser than warm water or water without dissolved salts (low or no salinity).

please mark brainliest answer by hitting that small brain at the top right corner

4 0
3 years ago
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